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1969 Rutgers University Blvd, Suite 102 Lakewood NJ 08701 Phone: 732.962.9720
Stormwater Management Report
South Hope Chapel Rd. Subdivision Jackson Township Ocean County, New Jersey Block 20701, Lots 12, 13 and 14 August 4, 2025 Revised December 19, 2025
Project #23184
Prepared by: Yosef Portnoy, P.E., P.P., C.M.E., C.F.M.
Digitally signed by Yosef Portnoy Date: 2026.03.02 15:51:42-05'00'
Prepared by: Yosef Portnoy, P.E., P.P., C.M.E., C.F.M. N.J.P.E. License # GE53583
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Stormwater Management Report South Hope Chapel Rd. Subdivision Project #23184
Table of Contents
Introduction.....1 โ—‹ Existing Conditions .....1 โ—‹ Proposed Development .....1 โ—‹ Soils .....1 Stormwater Analysis .....2 โ—‹ Existing Hydrology .....2 โ—‹ Proposed Hydrology .....5 โ—‹ Storm Sewer Design .....9 Compliance.....9 โ—‹ Water Quality .....9 โ—‹ Water Quantity .....10 โ—‹ Groundwater Recharge .....11 โ—‹ Green Infrastructure .....11 โ—‹ Groundwater Mounding Analysis .....13 โ—‹ Soil Erosion and Sediment Control .....14 โ—‹ New Jersey Pineland Commission Specific Requirements .....15 County ROW Improvements .....20 Conclusion .....20 Appendix A โ€“ Maps .....1 Appendix B โ€“ Existing Conditions Analysis .....2 Appendix C โ€“ Proposed Conditions Analysis .....3 Appendix D โ€“ Failure Analysis .....4 Appendix E โ€“ Water Quality Analysis .....5 Appendix F โ€“ County ROW Improvements .....6 Appendix G โ€“ Groundwater Mounding Analysis .....7 Appendix H โ€“ Pipe System Calculations .....8 Appendix I โ€“ Conduit Outlet Protection .....9 Appendix J โ€“ Drainage Area Maps .....10
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Stormwater Management Report South Hope Chapel Rd. Subdivision Project #23184
Introduction
This report has been prepared in support of a proposed residential subdivision in Jackson Township, Ocean County, New Jersey. The report has been prepared in accordance with the requirements of the Stormwater Management Rules at N.J.A.C. 7:8, local ordinances, and current industry standards.
Project Location
Street:South Hope Chapel Rd.
Municipality:Jackson Township
County:Ocean
Block/Lot:Block 20701, Lots 12, 13 & 14
Existing Conditions
The site fronts South Hope Chapel Rd. The front half of the site contains 3 single family houses, driveways and accessory structures. The remainder of the site is wooded. The east portion of the site drains towards South Hope Chapel Rd. A portion of the South drains towards the neighboring property along the South property line. A small portion of the site drains towards the neighboring property along the East property line. The remainder of the site drains West to the wetlands located in the rear of the site.
Proposed Development
The applicant proposes to develop the site with a cul-de-sac and 11 lot subdivision. For details of the proposed design refer to the Preliminary and Final Major Subdivision plan.
Soils
Per the NRCS Web Soil Survey the project site and tributary drainage areas consist of the following soils:
Map UnitNameHSG Rating
AtsAOAtsion sand, 0 to 2 percent slopes, Northern Tidewater AreaA/D
DocBODowner loamy sand, 0 to 5 percent slopes, Northern Tidewater AreaA
GamBGalloway loamy sand, 0 to 5 percent slopesA/D
A geotechnical investigation was performed by Colliers Engineering & Design. The results of the investigation can be found in the following reports
Preliminary Infiltration Evaluation Report, Major Subdivision South Hope Chapel Road, Block 20701, Lots 12, 13 & 14, Jackson Township, Ocean County, New Jersey, dated December 21, 2023.
Supplemental Infiltration Evaluation Report, Major Subdivision South Hope Chapel Road, Block 20701, Lots 12, 13 & 14, Jackson Township, Ocean County, New Jersey, dated February 14, 2025.
A deep soil boring was performed by S & F PC to find the thickness of the saturated zone. The results of the investigation can be found in the following report
Deep Boring Report, Proposed Development, 198-210 S Hope Chapel Road (Block 20701; Lots 12, 13, & 14), Jackson, New Jersey 08527, dated September 24, 2025
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Stormwater Management Report South Hope Chapel Rd. Subdivision Project #23184
Stormwater Analysis
In support of the proposed development, the existing and proposed hydrology was modeled using HydroCAD software. The drainage areas were delineated based on their hydrological and hydraulic characteristics. The maximum sheet flow time of concentrations are based on McCuen-Spiess criteria.
MODELING CRITERIA
Method: TR-55
Unit Hydrograph: Delmarva
Storm Distribution: D
Rainfall Source: NOAA Atlas 14
2-year Rainfall: 3.42 in.
10-year Rainfall: 5.33 in.
25-year Rainfall: 6.68 in.
100-year Rainfall: 9.20 in.
The rainfall has been adjusted to account for current and future precipitation adjustment factors as required by NJAC 7:8-5.7(c)/(d)
Current AdjustedFuture Adjusted
RainfallAdj. FactorAdj. RainfallAdj. FactorAdj. Rainfall
2 Year3.421.003.421.184.04
10 Year5.331.015.381.196.34
100 Year9.201.039.481.2411.41
Existing Hydrology
The existing site runs off untreated and unretained to the adjoining properties and road. The existing points of analysis, drainage areas, and results are summarized in the tables below.
Existing Network Diagram
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Stormwater Management Report South Hope Chapel Rd. Subdivision Project #23184
EXISTING POINTS OF ANALYSIS (POA)
POADescription
POA 1South Hope Chapel Road
POA 2Lot 11
POA 3Wetlands
POA 4Lot 15
EXISTING DRAINAGE AREAS
Drainage AreaPoint of AnalysisDescription
DA โ€“ E1POA 1The area contains single family houses with driveways and associated accessory structures. The remainder of the area contains dirt and grass areas. The runoff from the area is untreated and drains towards POA 1.
DA โ€“ E2POA 2The area contains single family houses with driveways and associated accessory structures. A small portion of the area contains dirt and grass areas. The remainder of the area is wooded. The runoff from the area is untreated and drains towards POA 2.
DA - E3POA 3The entire area is wooded. The runoff from the area is untreated and drains towards POA 3.
DA โ€“ E4POA 4The area contains single family houses with driveways and associated accessory structures. A small portion of the area contains dirt and grass areas. The remainder of the area is wooded. The runoff from the area is untreated and drains towards POA 4.
The results of the existing conditions analysis are contained in the Appendix and summarized below: POA-1
Storm Event (year)Existing Onsite Peak Runoff (CFS)Required Reduction (%)Allowable Peak Runoff (cfs)
2 (current)0.77500.39
2 (future)1.01500.51
10 (current)1.56251.17
10 (future)1.98251.49
100 (current)3.44202.75
100 (future)4.36203.49
E Civil Core
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Stormwater Management Report South Hope Chapel Rd. Subdivision Project #23184
POA-2
Storm Event (year)Existing Onsite Peak Runoff (CFS)Required Reduction (%)Allowable Peak Runoff (cfs)
2 (current)0.12500.06
2 (future)0.15500.08
10 (current)0.31250.23
10 (future)0.51250.38
100 (current)1.36201.09
100 (future)1.98201.58
POA-3
Storm Event (year)Existing Onsite Peak Runoff (CFS)Required Reduction (%)Allowable Peak Runoff (cfs)
2 (current)0.0500.0
2 (future)0.0500.0
10 (current)0.0250.0
10 (future)0.01250.008
100 (current)0.18200.14
100 (future)0.48200.38
POA-4
Storm Event (year)Existing Onsite Peak Runoff (CFS)Required Reduction (%)Allowable Peak Runoff (cfs)
2 (current)0.2500.1
2 (future)0.23500.12
10 (current)0.39250.29
10 (future)0.62250.47
100 (current)1.76201.41
100 (future)2.64202.11
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Stormwater Management Report South Hope Chapel Rd. Subdivision Project #23184
Proposed Hydrology
The site is proposed to contain a 11 lot subdivision. 9 of the lots will contain single family houses and associated driveways. One of the lots will contain a multifamily house with associated parking lot. The final lot will contain a stormwater basin. The stormwater runoff generated by the developed area will be collected and treated through proposed porous pavement, bioretention basins and infiltration basins. The front half of the site includes 4 single family lots, one multifamily lot and the front portion of the road. This portion will be treated first through bioretention basin 1 and then routed to subsurface infiltration basin 1. The back north portion of the site, which contains 2 single family lots, a basin lot and half of the back portion of the road, will be treated first through bioretention basin 2 and porous pavement 2, and then routed to infiltration basin 2. The back south portion of the site, which contains 3 single family lots and half of the back portion of the road, will be treated first through bioretention basin 3 and porous pavement 3, and then routed to infiltration basin 3.
The proposed points of analysis and drainage areas are summarized in the tables below.
Proposed Network Diagram
Proposed Conditions
E Civil Core
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Stormwater Management Report South Hope Chapel Rd. Subdivision Project #23184
The proposed drainage areas are summarized in the tables below.
PROPOSED POINTS OF ANALYSIS (POA)
POADescription
POA 1South Hope Chapel Road
POA 2Lot 11
POA 3Wetlands
PROPOSED DRAINAGE AREAS
Drainage AreaPoint of AnalysisDescription
DA-P1POA 1The area contains the front half of the site. The area contains 4 single family lots, 1 multifamily lot and the front portion of the road. The runoff from this area will first be treated through bioretention basin 1 and then routed via an underdrain to subsurface infiltration basin 1. The overflow from the infiltration basin will be piped to POA 1.
DA-P2POA 2The area contains the back north portion of the site. The area contains 2 single family lots, a basin lot and half of the back portion of the road. The runoff from the area will first be treated through bioretention basin 2 or porous pavement 2 and then routed via underdrains to infiltration basin 2. The overflow from the infiltration basin will be piped to POA 2.
DA-P3POA 3The area contains the back south portion of the site. The area contains 3 single family lots and half of the back portion of the road. The runoff from the area will first be treated through bioretention basin 3 or porous pavement 3 and then routed via underdrains to infiltration basin 3. The overflow from the infiltration basin will be piped to POA 3.
Lots 1-4 & 6-10 RoofsVariesThe runoff from the roofs will be treated through subsurface infiltration basins. The overflow from the infiltration basins in failure conditions will go to varying POA.
Proposed Stormwater Management Design
The site will contain 11 residential lots with a cul-de-sac going through the site. 9 single family lots, 1 multifamily lot and 1 basin lot. The site is split into three drainage areas with associated basins. Each area will first be treated through a bioretention basin or porous pavement with an underdrain, and then an infiltration basin.
All the proposed porous pavement areas and bioretention basin areas have been designed to provide water quality treatment and to attenuate the rate of stormwater runoff. The porous pavement areas have been sized to comply with the 3:1 ratio of drainage area to porous pavement area.
Small- scale bioretention basin 1 has been proposed for the front half of the site to provide water quality treatment. Small-scale infiltration basin 1 has been proposed to provide water quantity control and groundwater recharge for the front half of the site. The proposed basins have been modeled in HydroCAD. The table below summarizes the results of the analysis.
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Stormwater Management Report South Hope Chapel Rd. Subdivision Project #23184
BIORETENTION BASIN 1A
Storm EventCURRENT ADJUSTEDFUTURE ADJUSTED
Outflow (cfs)Proposed Peak Basin WSE (ft)Outflow (cfs)Proposed Peak Basin WSE (ft)
20.1491.880.1792.21
100.2392.990.2793.74
1001.8995.104.1295.17
SUBSURFACE INFILTRATION BASIN 1
Storm EventCURRENT ADJUSTEDFUTURE ADJUSTED
Outflow (cfs)Proposed Peak Basin WSE (ft)Outflow (cfs)Proposed Peak Basin WSE (ft)
20.087.010.087.01
100.087.010.087.03
1000.089.070.2592.62
Small- scale bioretention basin 2 and porous pavement 2 has been proposed for the back north portion of the site to provide water quality treatment. The road area will be treated through the proposed porous pavement 2. The lawn area will be treated through bioretention basin 2. The runoff will then be routed via underdrains to small-scale infiltration basin 2, which has been proposed to provide water quantity control and groundwater recharge for the back north portion of the site. The proposed basins have been modeled in HydroCAD. The table below summarizes the results of the analysis.
BIORETENTION BASIN 2A
Storm EventCURRENT ADJUSTEDFUTURE ADJUSTED
Outflow (cfs)Proposed Peak Basin WSE (ft)Outflow (cfs)Proposed Peak Basin WSE (ft)
20.094.420.094.83
100.0294.910.0695.03
1000.4995.540.8695.56
Storm EventCURRENT ADJUSTEDFUTURE ADJUSTED
Outflow (cfs)Proposed Peak Basin WSE (ft)Outflow (cfs)Proposed Peak Basin WSE (ft)
20.1494.590.1994.81
100.5694.840.8394.85
1001.4494.881.7694.90
POROUS PAVEMENT 2B
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Stormwater Management Report South Hope Chapel Rd. Subdivision Project #23184
INFILTRATION BASIN 2
Storm EventCURRENT ADJUSTEDFUTURE ADJUSTED
Outflow (cfs)Proposed Peak Basin WSE (ft)Outflow (cfs)Proposed Peak Basin WSE (ft)
20.092.120.092.28
100.092.720.093.12
1000.1094.120.2594.71
Small-scale bioretention basin 3 and porous pavement 3 has been proposed for the back south portion of the site to provide water quality treatment. The road area will be treated through proposed porous pavement 3. The lawn area will be treated through bioretention basin 3. The runoff will then be routed via underdrains to small-scale infiltration basin 3, which has been proposed to provide water quantity control and groundwater recharge for the back south portion of the site. The proposed basins have been modeled in HydroCAD. The table below summarizes the results of the analysis.
BIORETENTION BASIN 3A
Storm EventCURRENT ADJUSTEDFUTURE ADJUSTED
Outflow (cfs)Proposed Peak Basin WSE (ft)Outflow (cfs)Proposed Peak Basin WSE (ft)
20.093.420.093.84
100.0293.920.0794.07
1000.6094.541.1794.57
POROUS PAVEMENT 3B
Storm EventCURRENT ADJUSTEDFUTURE ADJUSTED
Outflow (cfs)Proposed Peak Basin WSE (ft)Outflow (cfs)Proposed Peak Basin WSE (ft)
20.1594.710.2794.82
100.6794.850.9494.86
1001.5394.891.8694.90
Storm EventCURRENT ADJUSTEDFUTURE ADJUSTED
Outflow (cfs)Proposed Peak Basin WSE (ft)Outflow (cfs)Proposed Peak Basin WSE (ft)
20.090.760.090.76
100.091.010.091.23
1000.0793.060.2094.40
E Civil Core
INFILTRATION BASIN 3
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Stormwater Management Report South Hope Chapel Rd. Subdivision Project #23184
The peak runoff from the site is summarized below.
POA 2-Year 10-Year 100-Year 2-Year 10-Year 100-Year
1 0.0 0.0 0.0 0.0 0.0 0.25
2 0.0 0.0 0.10 0.0 0.0 0.25
3 0.0 0.0 0.07 0.0 0.0 0.20
PROPOSED PEAK RUNOFF (CFS)
CURRENT ADJUSTED FUTURE ADJUSTED
Storm Sewer Design
The proposed storm sewers have been designed in accordance with relevant requirements. The storm sewer was designed using the Rational method, the NJ Intensity-Duration-Frequency table, and a time of concentration minimum of 10 minutes. The storm sewers were sized to convey a 25-year storm event.
Storm sewer calculations are included in the Appendix.
Compliance
Water Quality
In accordance with N.J.A.C. 7:8-5.5(b) stormwater management measures shall be designed to reduce the post-construction load of total suspended solids (TSS) in stormwater runoff generated from the water quality design storm by eighty percent TSS removal of the anticipated load, expressed as an annual average for the stormwater runoff from the net increase of motor vehicle surface.
Currently, the site contains 0.26 acres of motor vehicle surface which does not receive water quality treatment.
The proposed site will contain 0.79 acres of motor vehicle surface for a net increase of 0.53 acres. As the existing motor vehicle surface does not receive water quality treatment, the equivalent redevelopment area would only require 50% TSS removal. This credit can be used to offset the portions of the proposed driveways that will run off untreated. However, the entire proposed motor vehicle surface will be treated for 80% TSS removal and so the proposed stormwater management will exceed the required TSS removal for the site.
REGULATED MOTOR VEHICLE SURFACE (ACRE)
ExistingProposedNet Change
0.260.790.53
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Stormwater Management Report South Hope Chapel Rd. Subdivision Project #23184
REQUIRED TSS REMOVALPROPOSED TSS REMOVAL
ACRE%ACRE-%ACRE%ACRE-%
0.26500.130.79800.63
0.53800.4200
Total0.55Total0.63
As demonstrated above, the proposed stormwater management will exceed the required TSS removal for the site.
Water Quantity
N.J.A.C. 7:8-5.6 outlines the requirements to demonstrate that the proposed development will not result in stormwater runoff quantity impacts.
The proposed development has been designed to reduce peak rates of runoff in compliance with N.J.A.C. 7:8-5.6(b)3.:
Design stormwater management measures so that the post-construction peak runoff rates for the current and projected two-, 10-, and 100-year storm events, as defined and determined pursuant to N.J.A.C. 7:8-5.7(c) and (d), respectively, are 50, 75, and 80 percent, respectively, of the preconstruction peak runoff rates. The percentages apply only to the post-construction stormwater runoff that is attributable to the portion of the site on which the proposed development or project is to be constructed.
Water quantity attenuation will be provided by infiltration through infiltration basins. The site runoff will be first treated through either bioretention basins or porous pavement. The runoff will then be routed to the infiltration basins.
PEAK RUNOFF COMPARISON โ€“ CURRENT ADJUSTED (CFS)
2-Year10-Year100-Year
POAExistingAllowable (50%)ProposedExistingAllowable (75%)ProposedExistingAllowable (80%)Proposed
10.770.390.01.560.170.03.442.750.0
20.120.060.00.310.230.01.361.090.10
30.00.00.00.00.00.00.180.140.07
PEAK RUNOFF COMPARISON โ€“ FUTURE ADJUSTED (CFS)
2-Year10-Year100-Year
POAExistingAllowable (50%)ProposedExistingAllowable (75%)ProposedExistingAllowable (80%)Proposed
11.010.510.01.981.490.04.363.490.25
20.150.080.00.510.380.01.981.580.25
30.00.00.00.010.0080.00.480.380.20
E Civil Core
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Stormwater Management Report South Hope Chapel Rd. Subdivision Project #23184
Groundwater Recharge
In accordance with N.J.A.C. 7:8-5.4(b), groundwater recharge can be met by infiltrating the increase in runoff from the 2-year storm event. The proposed GI infiltration basins will fully infiltrate the increased runoff from a 2-year storm event. Therefore, the requirement is met.
Green Infrastructure
In accordance with N.J.A.C. 7:8-5.3 groundwater recharge, stormwater runoff quality, and stormwater runoff quantity standards must be met using green infrastructure (GI). Green infrastructure is defined as a stormwater management measure that manages stormwater close to its source by either treating stormwater runoff through infiltration into subsoil, treating stormwater runoff through filtration by vegetation or soil; or storing stormwater runoff for reuse. The proposed stormwater management design complies with the NJDEP criteria for Small Scale Green Infrastructure as demonstrated below
INFILTRATION BASIN GREEN INFRASTRUCTURE REQUIREMENTS
GITotal Tributary Drainage Area (Max 2.5 Ac)Basin Bottom Elev. (ft)Lowest Orifice Elev. (ft)SHWT Elev. (ft)Separation from SHWT (Min. 2 ft)Tested Permeability (Min. 1 in/hr)Test Pits
20.6291.6593.6586.794.869.922 & 6A
30.8890.7592.7585.575.1820 (Soil Replacement)7 & 8
E Civil Core
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Stormwater Management Report South Hope Chapel Rd. Subdivision Project #23184
SUBSURFACE INFILTRATION BASIN GREEN INFRASTRUCTURE REQUIREMENTS
GITributary Drainage Area (Max 2.5 Ac)Basin Bottom Elev. (ft)SHWT Elev. (ft)Separation from SHWT (Min. 2 ft)Tested Permeability (Min. 1 in/hr)Basin Storage Vol. (af) (Min. WQS)Test Pits
11.68987.081.355.65200.17313 & 14
Lot 10.04291.088.03.04.90.0143 & 18
Lot 20.04293.090.03.015.70.00919 & 20
Lot 30.04293.088.54.58.10.01220 & 24
Lot 40.04293.088.54.58.10.01221 & 24
Lot 60.04293.085.577.4316.90.0098 & 9
Lot 70.04294.089.374.6320.00.00910 & 5
Lot 80.04294.089.374.6320.00.00910 & 11
Lot 90.04293.083.849.1616.00.0092 & 16
Lot 100.04292.085.516.4920.00.00916 & 17
UNDERDRAINED BIORETENTION BASIN GREEN INFRASTRUCTURE REQUIREMENTS
GITotal Tributary Drainage Area (Max 2.5 Ac)Basin Bottom Elev. (ft)Lowest Outlet Elev. (ft)WQS Elev. (ft)SHWT Elev. (ft)Separation from SHWT (min. 3.75')Test Pits
1A1.6290.091.0091.0085.514.4917 & 13A
2A0.4394.3094.8094.3086.797.5121 & 22
3A0.6893.3092.3091.885.577.738 & 9
UNDERDRAINED POROUS PAVEMENT GREEN INFRASTRUCTURE REQUIREMENTS
GIPorous Pvmt Area (SF)Tributary Drainage Area (ac)Ratio (Max 3:1)Stone Bed Bottom Elev. (ft)Pavmt. Min. Top ElevationSHWT Elev. (ft)Separation from SHWT (Min. 1.25 ft)Stone Bed Vol (Min. WQS vol.) (ft3)Test Pits
2B3,0750.192.69:193.8094.8087.287.521,538.0023 & 6A
3B2,9630.202.94:193.8094.8087.287.521,482.0023 & 9
E Civil Core
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Stormwater Management Report South Hope Chapel Rd. Subdivision Project #23184
GIBasin BottomStorage Volume Retained up to the Lowest Outfall ElevationImpervious Area (AC)
Bioretention Basin 1A90.001,500 cu-ft0.40
Bioretention Basin 2A94.3047 cu-ft0.0
Bioretention Basin 3A93.3099 cu-ft0.0
Subsurface Infiltration Basin 187.00980 cu-ft0.40
Surface Infiltration Basin 291.651,902 cu-ft0.19
Surface Infiltration Basin 390.752,300 cu-ft0.20
Groundwater Mounding Analysis
In accordance with N.J.A.C. 7:8-5.2(h) whenever the stormwater management design includes one or more BMPs that will infiltrate stormwater into subsoil, the design engineer shall assess the hydraulic impact on the groundwater table and design the site, to avoid adverse hydraulic impacts.
A groundwater mounding analysis has been prepared for the proposed green infrastructures (GI) using the USGS Hantush spreadsheet in accordance with NJDEP BMP Manual Chapter 13. The proposed GI's have been modeled using infiltration for all storm events. Therefore, the groundwater mounding analysis has been performed for the infiltration volume generated by the future 100-year storm event as calculated by HydroCAD.
GROUNDWATER MOUNDING MODELING CRITERIA
CriteriaValueNotes
R-Recharge RateSee belowPer Geotech
Sy-Specific Yield0.15Default
Kh-Horizontal conductivity5xRCoastal Plains
hi-Initial Thickness of saturated zone34 feetPer Deep Boring Report
E Civil Core
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Stormwater Management Report South Hope Chapel Rd. Subdivision Project #23184
GROUNDWATER MOUNDING MODELING RESULTS
GI100 Yr Storm Exfiltration Volume (cf)Infiltration Area (sf)Recharge Rate (in/hr)Duration of Infiltration Period (hr)Depth to SHWTGW Mound Height
Infiltration Basin 129,8742,4751014.485.654.71
Infiltration Basin 298375204.9545.864.86 (4.36 for 6" sand)2.96
Infiltration Basin 312,5831,1501013.135.18 (4.68 for 6" sand)2.60
Lot 11,722566.282.4514.893.01.07
Lot 21,722392.047.856.713.00.82
Lot 31,722479.164.0510.654.50.80
Lot 41,722479.164.0510.654.50.92
Lot 61,722348.488.457.027.430.82
Lot 71,722348.48105.934.630.80
Lot 81,722348.48105.934.630.80
Lot 91,722348.4887.419.160.83
Lot 101,722348.48105.936.490.80
Soil Erosion and Sediment Control
Soil erosion and sediment control measures have been designed in accordance with the Standards for Soil Erosion and Sediment Control in New Jersey and are shown on the plan. These include stormwater management, silt fence, inlet protection, stabilized construction access, and temporary and permanent stabilization
Point Discharge Stability
Point Discharge stability can be met by either maintaining existing peak rates of runoff for a โ€œfailure analysisโ€ which ignores infiltration and storage below the lowest basin outlet or by demonstrating stable conditions under the proposed design. Ocean County Soil Conservation district has adopted current precipitation adjustment factors at N.J.A.C. 7:8-5.7(c), the values of which are reflected in the tables below.
E Civil Core
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Stormwater Management Report South Hope Chapel Rd. Subdivision Project #23184
The results of the analysis are summarized below:
2-Year - Current Adjusted (CFS)10-Year - Current Adjusted (CFS)
POAExistingProposedExistingProposed
10.770.421.560.62
20.120.100.310.15
30.00.140.00.19
FAILURE ANALYSIS
Downstream Stability Analysis
Downstream stability can be satisfied by reducing the post development peak flow rates to 50% of the predevelopment peak for a 2-year storm and 75% of the predevelopment peak for a 10-year storm. The designed stormwater management system will reduce the peak flows by the required amount as summarized below:
DOWNSTREAM STABILITY ANALYSIS
2-Year - Current Adjusted (CFS)10-Year - Current Adjusted (CFS)
POAExistingProposedExistingProposed
10.770.01.560.0
20.120.00.310.0
30.00.00.00.0
New Jersey Pineland Commission Specific Requirements
The proposed stormwater management has been designed in accordance with the Pinelands Comprehensive Management Plan as outlined below:
7:50-6.84(a)6 Surface water runoff, in accordance with N.J.A.C. 7:8-4.6, 5 and 6, as amended, except as modified and supplemented, as follows:
Runoff Rates and Volumes, runoff quality, and groundwater recharge methodologies:
Stormwater runoff rate and volumes shall be calculated in accordance with N.J.A.C. 7:8-5.7, except that the Rational Method for peak flow and the Modified Rational Method for hydrograph computations shall not be used; and
The stormwater runoff rate and volumes have been calculated in accordance with N.J.A.C. 7:8-5.7. The NRCS methodology using a Type D storm distribution and the Delmarva unit hydrograph has been utilized in computing stormwater runoff. All significant land features and structures, such as an on-site depression have been accounted for. The pervious and impervious surfaces have been calculated separately to compute the rates and volume of runoff from the site. County specific data has been utilized to determine the precipitation depths. The current and future precipitation depths have been calculated and utilized.
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Stormwater Management Report South Hope Chapel Rd. Subdivision Project #23184
In calculating stormwater runoff using the NRCS methodology, the appropriate 24-hour rainfall depths as developed for the parcel by the National Oceanic and Atmospheric Administration shall be utilized.
The Ocean County 24-hour rainfall depths provided in the NJDEP BMP Manual Chapter 5 have been utilized which have been developed from NOAA Atlas 14.
Runoff shall meet the requirements at N.J.A.C. 7:8-5.6 and (a) 6iii(1) and (2) below: Runoff will meet the stormwater runoff quantity standards of N.J.A.C. 7:8-5.6 by meeting peak rate reductions per of N.J.A.C. 7:8-5.6(b)3. for each point of analysis as outlined below:
Design stormwater management measures so that the post-construction peak runoff rates for the current and projected two-, 10-, and 100-year storm events, as defined and determined pursuant to N.J.A.C. 7:8-5.7(c) and (d), respectively, are 50, 75, and 80 percent, respectively, of the pre-construction peak runoff rates. The percentages apply only to the post-construction stormwater runoff that is attributable to the portion of the site on which the proposed development or project is to be constructed.
PEAK RUNOFF COMPARISON โ€“ CURRENT ADJUSTED (CFS)
POAAllowableProposed
2-Year
10.390.0
20.060.0
30.00.0
10-Year
11.170.0
20.230.0
30.00.0
100-Year
12.750.0
21.090.10
30.140.07
PEAK RUNOFF COMPARISON โ€“ FUTURE ADJUSTED (CFS)
POAAllowableProposed
2-Year
10.510.0
20.080.0
30.00.0
10-Year
11.490.0
20.380.0
E Civil Core
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Stormwater Management Report South Hope Chapel Rd. Subdivision Project #23184
3 0.008 0.0
100-Year
1 3.49 0.25
2 1.58 0.25
3 0.38 0.20
There shall be no direct discharge of stormwater runoff from any point or nonpoint source to any wetland, wetlands transition area, or surface waterbody. In addition, stormwater runoff shall not be directed in such a way as to increase the volume and rate of discharge into any wetland, wetlands transition area, or surface waterbody from that which existed prior to development of the parcel; and.
There will be no direct discharge of stormwater runoff onto any wetlands, wetlands transition area, or surface waterbody.
To the maximum extent practical, there shall be no direct discharge of stormwater runoff onto farm fields to protect farm crops from damage due to flooding, erosion, and long-term saturation of cultivated crops and cropland.
There will be no direct discharge of stormwater runoff onto farm fields.
Recharge standards:
For all major development, as defined at N.J.A.C. 7:50-2.11, the total runoff volume generated from the net increase in impervious surfaces by a 10-year, 24-hour storm shall be retained and infiltrated onsite;
The total runoff volume generated from the net increase in impervious surfaces by a 10-year, 24-hour storm is designed to be retained and infiltrated onsite. All the proposed impervious surfaces are designed to be routed to the proposed infiltration basins. The lowest outlet for all the basins is proposed above the 10-year water surface elevation, to ensure the 10-year storm is fully infiltrated. The lowest outlet and 10-year water surface for each basin is summarized below.
BasinProposed 10-Year Storm Basin WSE (ft)Lowest Outlet Elevation (ft)
187.0188.00
292.7293.65
391.0192.75
In high pollutant loading areas (HPLA) and areas where stormwater runoff is exposed to source material, as defined at N.J.A.C. 7:8-5.4(b)3i and ii, the following additional water quality standards shall apply:
There will not be any HPLC or exposure to source materials onsite.
For all major development, as defined at N.J.A.C. 7:50-2.11, stormwater management measures shall be designed to achieve a minimum of 65 percent reduction of the post-construction total nitrogen load from the developed site, including those permanent lawn or turf areas that are specifically intended for active human use as described at N.J.A.C. 7:50-6.24(c)3, in stormwater runoff generated from the water quality design storm. In achieving a minimum 65
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Stormwater Management Report South Hope Chapel Rd. Subdivision Project #23184
percent reduction of total nitrogen, the design of the site shall include green infrastructure in accordance with the BMP Manual and shall optimize nutrient removal. The minimum 65 percent total nitrogen reduction may be achieved by using a singular stormwater management measure or multiple stormwater management measures in series.
The runoff from the site will be treated to a minimum of 65 percent reduction of the post-construction total nitrogen load. The runoff from the area is designed to be routed through bioretention basins or porous pavement and then to infiltration basins. The bioretention basins will reduce the nitrogen load by 30%, and the infiltration basins will reduce the remaining nitrogen load by 50%, for a total reduction of 65%, which meets the required reduction. The porous pavement will reduce the nitrogen load by 50%, and the infiltration basins will reduce the remaining nitrogen load by 50%, for a total reduction of 75%, which meets the required reduction. Runoff from roof areas will be piped directly into subsurface infiltration basins.
In accordance with N.J.A.C. 7:8-5.5(b) stormwater management measures shall be designed to reduce the post-construction load of total suspended solids (TSS) in stormwater runoff generated from the water quality design storm by eighty percent TSS removal of the anticipated load, expressed as an annual average for the stormwater runoff from the net increase of motor vehicle surface.
The site has a total proposed motor vehicle surface of 0.79 acres. The roads, driveways, and lawn area drain into bioretention basins or porous pavement (80% TSS removal) and then subsurface infiltration basins (80% TSS removal), which will act in series and provide a combined 96% TSS removal.
Stormwater management measure design, siting and construction standards:
Stormwater management measures designed to infiltrate stormwater shall be designed, constructed, and maintained to provide a minimum separation of at least two feet between the elevation of the lowest point of infiltration and the seasonal high water table;
The stormwater management measures will provide a minimum separation of at least two feet between the elevation of the lowest point of infiltration and the seasonal high-water table. All the proposed stormwater management infiltration basins have been designed by setting the basin bottom at a minimum of two feet above the seasonal high-water table. The basin bottom and seasonal high-water table elevations for each basin or porous pavement area are included in the Green Infrastructure section below.
Stormwater management measures shall be sited in suitable soils verified by testing to have permeability rates between one and 20 inches per hour. A factor of safety of two shall be applied to the soil's permeability rate in determining the measure's design permeability rate. If such soils do not exist on the parcel proposed for development or if it is demonstrated that it is not practical for engineering, environmental, or safety reasons to site the stormwater infiltration measure(s) in such soils, the stormwater infiltration measure(s) may be sited in soils verified by testing to have permeability rates in excess of 20 inches per hour, provided that stormwater is routed through a bioretention system prior to infiltration. Said bioretention system shall be designed, installed and maintained in accordance with the New Jersey Stormwater Best Management Practices Manual;
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Stormwater Management Report South Hope Chapel Rd. Subdivision Project #23184
A factor of safety of two has been applied to the soil's permeability rate. The majority of the site has soils with permeability which exceeds 20 in/hr. Therefore, it is not possible to site the proposed stormwater measures in areas with tested permeability of between 1-20 in/hr. Per the CMP, infiltration measure(s) may be sited in soils verified by testing to have permeability rates in excess of 20 inches per hour, provided that stormwater is routed through a bioretention system prior to infiltration. The majority of the site runoff to the basins will be pretreated using bioretention basins prior to infiltration. The bioretention basins have been designed in accordance with the New Jersey Stormwater Best Management Practices Manual. In areas where it is not practical to route through bioretention, and instead is routed through porous pavement, it is proposed to replace 36" of soil below the basin with K4 soils with a permeability rate of up to 20 in/hr (for Subsurface Infiltration Basin 3), in accordance with guidance received from the Commission. The replacement soil will extend up the sides of the basin to the elevation of the lowest outlet.
For all major development, as defined at N.J.A.C. 7:50-2.11, groundwater mounding analysis shall be required for purposes of assessing the hydraulic impacts of mounding of the water table resulting from infiltration of stormwater runoff from the maximum storm designed for infiltration. The mounding analysis shall provide details and supporting documentation on the methodology used. Groundwater mounds shall not cause stormwater or groundwater to breakout to the land surface or cause adverse impacts to adjacent water bodies, wetlands, or subsurface structures, including, but not limited to basements and septic systems. Where the mounding analysis identifies adverse impacts, the stormwater management measure shall be redesigned or relocated, as appropriate;
Groundwater mounding analysis has been conducted for all proposed infiltration basins on site using the USGS Hantush spreadsheet in accordance with NJDEP BMP Manual Chapter 13.
The proposed GI has been modeled using infiltration for all storm events. Therefore, the groundwater mounding analysis has been performed for the future 100-year infiltration volume as calculated by HydroCAD. The results of the analysis confirm that the groundwater mounds will not impact the function of the basin or have any impact to subsurface structures. As the groundwater mounding for the 100-year infiltration volume will not cause any adverse effects, mounding for the smaller storms will also not cause any adverse effects.
GROUNDWATER MOUNDING MODELING CRITERIA
CriteriaValueNotes
R-Recharge RateSee belowPer Geotech
Sy-Specific Yield0.15Default
Kh-Horizontal conductivity5xRCoastal Plains
hi-Initial Thickness of saturated zone34 FTPer Deep Boring results
Detailed analysis, supporting documentation, and methodology is included in the appendix.
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Stormwater Management Report South Hope Chapel Rd. Subdivision Project #23184
The use of stormwater management measures that are smaller in size and distributed spatially throughout a parcel, rather than the use of a single, larger stormwater management measure, shall be required;
The project proposes multiple small scale stormwater management measures which are distributed throughout the site which each drain less than 2.5 acres.
Methods of treating stormwater prior to entering any stormwater management measure shall be incorporated into the design of the stormwater management measure to the maximum extent practical;
The stormwater runoff will be pretreated. All of the site runoff to the small-scale infiltration basins will be pretreated using bioretention basins or porous pavement. All the roof runoff to the small-scale infiltration basins will be pretreated with leaf screens.
County ROW Improvements
South Hope Chapel Road is proposed to be widened along the project frontage. The proposed widening will add 6,402.44 sf of additional asphalt pavement and 1,861.45 sf of additional sidewalk on South Hope Chapel Road. An underground basin consisting of 60 linear feet of 24" perforated HDPE in South Hope Chapel Road is proposed to manage the increase in runoff. These basins are designed to fully infiltrate the increased runoff occurring during a 2-year storm, as per the County requirements.
Conclusion
The proposed development and stormwater management measures have been designed in compliance with the applicable Pinelands Commission regulations with regard to stormwater quantity, quality, and groundwater recharge requirements.
E Civil Core
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Stormwater Management Report South Hope Chapel Rd. Subdivision Project #23184
Appendix A โ€“ Maps
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40ยฐ4'13"N
Natural Resources Conservation Service
Web Soil Survey National Cooperative Soil Survey
7/9/2024 Page 1 of 4
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Hydrologic Soil Groupโ€”Ocean County, New Jersey (prop bndry)
MAP LEGEND
MAP INFORMATION
The soil surveys that comprise your AOI were mapped at 1:24,000.
Warning: Soil Map may not be valid at this scale.
Enlargement of maps beyond the scale of mapping can cause misunderstanding of the detail of mapping and accuracy of soil line placement. The maps do not show the small areas of contrasting soils that could have been shown at a more detailed scale.
Please rely on the bar scale on each map sheet for map measurements.
Source of Map: Natural Resources Conservation Service Web Soil Survey URL: Coordinate System: Web Mercator (EPSG:3857)
Maps from the Web Soil Survey are based on the Web Mercator projection, which preserves direction and shape but distorts distance and area. A projection that preserves area, such as the Albers equal-area conic projection, should be used if more accurate calculations of distance or area are required.
This product is generated from the USDA-NRCS certified data as of the version date(s) listed below.
Soil Survey Area: Ocean County, New Jersey Survey Area Data: Version 21, Aug 29, 2023
Soil map units are labeled (as space allows) for map scales 1:50,000 or larger.
Date(s) aerial images were photographed: Jun 4, 2022โ€”Jul 22, 2022
The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background imagery displayed on these maps. As a result, some minor shifting of map unit boundaries may be evident.
Natural Resources Conservation Service
Web Soil Survey National Cooperative Soil Survey
7/9/2024 Page 2 of 4
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Hydrologic Soil Groupโ€”Ocean County, New Jersey
prop bndry
Hydrologic Soil Group
Map unit symbolMap unit nameRatingAcres in AOIPercent of AOI
AtsAOAtsion sand, 0 to 2 percent slopes, Northern Tidewater AreaA/D0.11.5%
DocBODowner loamy sand, 0 to 5 percent slopes, Northern Tidewater AreaA4.596.8%
GamBGalloway loamy sand, 0 to 5 percent slopesA/D0.11.7%
Totals for Area of Interest4.7100.0%
Natural Resources Conservation Service
Web Soil Survey National Cooperative Soil Survey
7/9/2024
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Hydrologic Soil Groupโ€”Ocean County, New Jersey
prop bndry
Description
Hydrologic soil groups are based on estimates of runoff potential. Soils are assigned to one of four groups according to the rate of water infiltration when the soils are not protected by vegetation, are thoroughly wet, and receive precipitation from long-duration storms.
The soils in the United States are assigned to four groups (A, B, C, and D) and three dual classes (A/D, B/D, and C/D). The groups are defined as follows:
Group A. Soils having a high infiltration rate (low runoff potential) when thoroughly wet. These consist mainly of deep, well drained to excessively drained sands or gravelly sands. These soils have a high rate of water transmission.
Group B. Soils having a moderate infiltration rate when thoroughly wet. These consist chiefly of moderately deep or deep, moderately well drained or well drained soils that have moderately fine texture to moderately coarse texture. These soils have a moderate rate of water transmission.
Group C. Soils having a slow infiltration rate when thoroughly wet. These consist chiefly of soils having a layer that impedes the downward movement of water or soils of moderately fine texture or fine texture. These soils have a slow rate of water transmission.
Group D. Soils having a very slow infiltration rate (high runoff potential) when thoroughly wet. These consist chiefly of clays that have a high shrink-swell potential, soils that have a high water table, soils that have a claypan or clay layer at or near the surface, and soils that are shallow over nearly impervious material. These soils have a very slow rate of water transmission.
If a soil is assigned to a dual hydrologic group (A/D, B/D, or C/D), the first letter is for drained areas and the second is for undrained areas. Only the soils that in their natural condition are in group D are assigned to dual classes.
Rating Options
Aggregation Method: Dominant Condition Component Percent Cutoff: None Specified Tie-break Rule: Higher
Natural Resources Conservation Service
Web Soil Survey National Cooperative Soil Survey
7/9/2024
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Stormwater Management Report South Hope Chapel Rd. Subdivision Project #23184
Appendix B โ€“ Existing Conditions Analysis
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Analysis-Existing Conditions
Printed 8/29/2025 Page 2
Rainfall Events Listing (selected events)
Event#Event NameStorm TypeCurveModeDuration (hours)B/BDepth (inches)AMC
12 YR-CNOAA 24-hrDDefault24.0013.412
22 YR-FNOAA 24-hrDDefault24.0013.912
310 YR-CNOAA 24-hrDDefault24.0015.262
410 YR-FNOAA 24-hrDDefault24.0016.172
5100 YR-CNOAA 24-hrDDefault24.0018.952
6100 YR-FNOAA 24-hrDDefault24.00111.842
1 2 YR-C NOAA 24-hr D Default 24.00 1 3.41
2 2 YR-F NOAA 24-hr D Default 24.00 1 3.91
3 10 YR-C NOAA 24-hr D Default 24.00 1 5.26
4 10 YR-F NOAA 24-hr D Default 24.00 1 6.17
5 100 YR-C NOAA 24-hr D Default 24.00 1 8.95
6 100 YR-F NOAA 24-hr D Default 24.00 1 11.84
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Area Listing (selected nodes)
Area (acres)CNDescription (subcatchment-numbers)
0.83061>75% Grass cover, Good, HSG B (5S, 12S, 14S, 17S)
0.11096Gravel surface, HSG B (12S)
0.14098Paved parking, HSG B (5S, 6S)
0.06098Roofs, HSG A (5S)
0.05098Roofs, HSG B (12S, 14S, 17S)
12.61078Row crops, straight row, Good, HSG B (1S, 3S, 6S, 19S)
7.40055Woods, Good, HSG B (1S, 3S, 5S, 6S, 12S, 14S, 17S, 19S)
Printed 8/29/2025 Page 3
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-C Rainfall=3.41" Printed 8/29/2025
R-C Rainfall=3.41" Printed 8/29/2025 Page 4
Summary for Subcatchment 1S: DA-E1
Runoff = 4.60 cfs @ 12.38 hrs, Volume= 0.848 af, Depth= 1.24" Routed to Link 6L : POA-1
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-C Rainfall=3.41"
Area (ac) CN Description
1.050 55 Woods, Good, HSG B
7.170 78 Row crops, straight row, Good, HSG B
8.220 75 Weighted Average
8.220 75 100.00% Pervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
9.0 35 0.0200 0.07 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 3.42" Using McCuen-Spiess flow length
12.0 646 0.0100 0.90 Shallow Concentrated Flow, Cultivated Straight Rows Kv= 9.0 fps
2.6 50 0.0040 0.32 Shallow Concentrated Flow, Woodland Kv= 5.0 fps
23.6 731 Total
Subcatchment 1S: DA-E1
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-C Rainfall=3.41" Printed 8/29/2025
Page 5
Summary for Subcatchment 3S: DA-E4
Runoff = 1.93 cfs @ 12.36 hrs, Volume= 0.377 af, Depth= 0.75" Routed to Link 16L : Reduction
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-C Rainfall=3.41"
Area (ac) CN Description
3.030 55 Woods, Good, HSG B
2.980 78 Row crops, straight row, Good, HSG B
6.010 66 Weighted Average
6.010 66 100.00% Pervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
7.5 100 0.0040 0.22 Sheet Flow, Fallow n= 0.050 P2= 3.42" Shallow Concentrated Flow, Cultivated Straight Rows Kv= 9.0 fps
5.3 360 0.0160 1.14
2.1 62 0.0030 0.49 Shallow Concentrated Flow, Cultivated Straight Rows Kv= 9.0 fps
4.4 231 0.0300 0.87 Shallow Concentrated Flow, Woodland Kv= 5.0 fps
19.3 753 Total
Subcatchment 3S: DA-E4
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-C Rainfall=3.41" Printed 8/29/2025 Page 6
Page 6
Summary for Subcatchment 5S: DA-E3
Runoff = 0.57 cfs @ 12.27 hrs, Volume= 0.122 af, Depth= 0.55" Routed to Link 13L : Reduction
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-C Rainfall=3.41"
Area (ac) CN Description
2.080 55 Woods, Good, HSG B
0.130 98 Paved parking, HSG B
0.380 61 >75% Grass cover, Good, HSG B
0.060 98 Roofs, HSG A
2.650 59 Weighted Average
2.460 56 92.83% Pervious Area
0.190 98 7.17% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
9.1 17 0.0180 0.03 Sheet Flow, Woods: Dense underbrush n= 0.800 P2= 3.42" Using McCuen-Spiess flow length
3.7 222 0.0400 1.00 Shallow Concentrated Flow, Woodland Kv= 5.0 fps
12.8 230 Total
Subcatchment 5S: DA-E3
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-C Rainfall=3.41" Printed 8/29/2025
R-C Rainfall=3.41" Printed 8/29/2025 Page 7
Summary for Subcatchment 6S: DA-E2
Runoff = 1.28 cfs @ 12.48 hrs, Volume= 0.268 af, Depth= 1.07" Routed to Link 10L : Reduction
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-C Rainfall=3.41"
Area (ac) CN Description
0.800 55 Woods, Good, HSG B
0.010 98 Paved parking, HSG B
2.200 78 Row crops, straight row, Good, HSG B
3.010 72 Weighted Average
3.000 72 99.67% Pervious Area
0.010 98 0.33% Impervious Area
9.0 35 0.0200 0.07 Sheet Flow, Woods: Light underbrush n=0.400 P2=3.42" Using McCuen-Spiess flow length
12.5 604 0.0080 0.80 Shallow Concentrated Flow, Cultivated Straight Rows Kv=9.0 fps
1.6 48 0.0100 0.50 Shallow Concentrated Flow, Woodland Kv=5.0 fps
4.1 496 0.0100 2.03 Shallow Concentrated Flow, Paved Kv=20.3 fps
27.4 1193 Total
27.4 1,193 Total
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
0.2 10 0.0300 0.87 Shallow Concentrated Flow, Woodland Kv=5.0 fps
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-C Rainfall=3.41" Printed 8/29/2025 Page 8
Page 8
Subcatchment 6S: DA-E2
Runoff
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-C Rainfall=3.41" Printed 8/29/2025
Page 9
Summary for Subcatchment 12S: DA-E2A
Runoff = 0.61 cfs @ 12.11 hrs, Volume= Routed to Link 11L : Offsite 0.046 af, Depth= 0.97"
0.046 af, Depth= 0.97"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-C Rainfall=3.41"
Area (ac) CN Description
0.040 55 Woods, Good, HSG B
0.110 96 Gravel surface, HSG B
0.390 61 >75% Grass cover, Good, HSG B
0.030 98 Roofs, HSG B
0.570 69 Weighted Average
0.540 68 94.74% Pervious Area
0.030 98 5.26% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
2.2 376 0.0200 2.87 Shallow Concentrated Flow, Paved Kv= 20.3 fps
2.7 421 Total
0.5 45 0.0300 1.43 Sheet Flow, Smooth surfaces n= 0.011 P2= 3.42"
Subcatchment 12S: DA-E2A
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-C Rainfall=3.41" Printed 8/29/2025 Page 10
Page 10
Summary for Subcatchment 14S: DA-E3A
Runoff = 0.02 cfs @ 12.26 hrs, Volume= Routed to Link 15L : Offsite 0.005 af, Depth= 0.66"
0.005 af, Depth= 0.66"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-C Rainfall=3.41"
Area (ac) CN Description
0.070 55 Woods, Good, HSG B
0.010 61 >75% Grass cover, Good, HSG B
0.010 98 Roofs, HSG B
0.090 60 Weighted Average
0.080 56 88.89% Pervious Area
0.010 98 11.11% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
9.3 13 0.0100 0.02 Sheet Flow, Woods: Dense underbrush n=0.800 P2=3.42" Using McCuen-Spiess flow length
2.0 116 0.0190 0.96 Shallow Concentrated Flow, Short Grass Pasture Kv=7.0 fps
2.2 147 0.0500 1.12 Shallow Concentrated Flow, Woodland Kv=5.0 fps
14.0 294 Total
0.5 18 0.0160 0.63 Shallow Concentrated Flow, Woodland Kv=5.0 fps
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-C Rainfall=3.41" Printed 8/29/2025
Page 11
Subcatchment 14S: DA-E3A
Hydrograph
Runoff
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-C Rainfall=3.41" Printed 8/29/2025
YR-C Rainfall=3.41" Printed 8/29/2025 Page 12
Summary for Subcatchment 17S: DA-E4A
Runoff = 0.04 cfs @ 12.48 hrs, Volume= Routed to Link 18L : Offsite
0.011 af, Depth= 0.45"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-C Rainfall=3.41"
Area (ac) CN Description
0.230 55 Woods, Good, HSG B
0.050 61 >75% Grass cover, Good, HSG B
0.010 98 Roofs, HSG B
0.290 58 Weighted Average
0.280 56 96.55% Pervious Area
0.010 98 3.45% Impervious Area
9.2 18 0.0200 0.03 Sheet Flow, Woods: Dense underbrush n= 0.800 P2= 3.42" Using McCuen-Spiess flow length
2.1 158 0.0200 1.27 Shallow Concentrated Flow, Cultivated Straight Rows Kv= 9.0 fps
2.1 62 0.0030 0.49 Shallow Concentrated Flow, Cultivated Straight Rows Kv= 9.0 fps
4.4 231 0.0300 0.87 Shallow Concentrated Flow, Woodland Kv= 5.0 fps
19.5 555 Total
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
1.7 86 0.0300 0.87 Shallow Concentrated Flow, Woodland Kv= 5.0 fps
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NOAA 24-hr D 2 YR-C Rainfall=3.41" Printed 8/29/2025 Page 13
Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Subcatchment 17S: DA-E4A
Hydrograph
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 50 52 54 56 58 60 62 64 66 70 72
0 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
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62 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 <ecel>
Time (hours)
Runoff
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-C Rainfall=3.41" Printed 8/29/2025
R-C Rainfall=3.41" Printed 8/29/2025 Page 14
Summary for Subcatchment 19S: DA-E5
Runoff = 0.26 cfs @ 12.20 hrs, Volume= Routed to Link 20L : POA-5 0.032 af, Depth= 1.06"
0.032 af, Depth= 1.06"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-C Rainfall=3.41"
Area (ac) CN Description
0.100 55 Woods, Good, HSG B
0.260 78 Row crops, straight row, Good, HSG B
0.360 72 Weighted Average
0.360 72 100.00% Pervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
9.0 35 0.0200 0.07 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 3.42" Using McCuen-Spiess flow length
1.7 212 0.0100 2.03 Shallow Concentrated Flow, Paved Kv= 20.3 fps
10.7 247 Total
10.7 247 Total
Subcatchment 19S: DA-E5
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-C Rainfall=3.41" Printed 8/29/2025 Page 15
Page 15
Summary for Link 6L: POA-1
Inflow Area = 8.220 ac, 0.00% Impervious, Inflow Depth = 1.24" for 2 YR-C event Inflow = 4.60 cfs @ 12.38 hrs, Volume= 0.848 af Primary = 4.60 cfs @ 12.38 hrs, Volume= 0.848 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 6L: POA-1
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-C Rainfall=3.41" Printed 8/29/2025 Page 16
Page 16
Summary for Link 7L: POA-4
Inflow Area = 6.300 ac, 0.16% Impervious, Inflow Depth = 0.74" for 2 YR-C event Inflow = 1.96 cfs @ 12.36 hrs, Volume= 0.387 af Primary = 1.96 cfs @ 12.36 hrs, Volume= 0.387 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 7L: POA-4
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
YR-C Rainfall=3.41" Printed 8/29/2025 Page 17
NOAA 24-hr D 2 YR-C Rainfall=3.41" Printed 8/29/2025
Summary for Link 8L: POA-3
Inflow Area = 2.740 ac, 7.30% Impervious, Inflow Depth = 0.56" for 2 YR-C event Inflow = 0.59 cfs @ 12.27 hrs, Volume = 0.127 af Primary = 0.59 cfs @ 12.27 hrs, Volume = 0.127 af, Atten = 0%, Lag = 0.0 min
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 8L: POA-3
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-C Rainfall=3.41" Printed 8/29/2025 Page 18
Summary for Link 9L: POA-2
Inflow Area = 3.580 ac, 1.12% Impervious, Inflow Depth = 1.05" for 2 YR-C event Inflow = 1.44 cfs @ 12.43 hrs, Volume= 0.314 af Primary = 1.44 cfs @ 12.43 hrs, Volume= 0.314 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 9L: POA-2
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-C Rainfall=3.41" Printed 8/29/2025 Page 19
Page 19
Summary for Link 10L: Reduction
0.33% Impervious, Inflow Depth = 1.07" for 2 YR-C event 12.48 hrs, Volume= 0.268 af
Inflow Area = 3.010 ac,
0.33% Impervious, Inflow Depth = 1.07" for 2 YR-C event 12.48 hrs, Volume= 0.268 af 12.48 hrs, Volume= 0.268 af, Atten= 0%, Lag= 0.0 min
Inflow = 1.28 cfs @ 0.33% Impervious, Inflow Depth = 1.07" for 2 YR-C event 12.48 hrs, Volume= 0.268 af 12.48 hrs, Volume= 0.268 af, Atten= 0%, Lag= 0.0 min
0.268 af, Atten= 0%, Lag= 0.0 min
Primary = 1.28 cfs @
Routed to Link 9L : POA-2
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 10L: Reduction
0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours)
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-C Rainfall=3.41" Printed 8/29/2025
Page 20
Summary for Link 11L: Offsite
Inflow Area = 0.570 ac, 5.26% Impervious, Inflow Depth = 0.97" for 2 YR-C event Inflow = 0.61 cfs @ 12.11 hrs, Volume= 0.046 af Primary = 0.61 cfs @ 12.11 hrs, Volume= 0.046 af, Atten= 0%, Lag= 0.0 min
Routed to Link 9L : POA-2
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 11L: Offsite
Hydrograph
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours)
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
YR-C Rainfall=3.41" Printed 8/29/2025 Page 21
NOAA 24-hr D 2 YR-C Rainfall=3.41" Printed 8/29/2025
Summary for Link 13L: Reduction
7.17% Impervious, Inflow Depth = 0.55" for 2 YR-C event 12.27 hrs, Volume= 0.122 af
Inflow Area = 2.650 ac,
Inflow = 0.57 cfs @
Primary = 0.57 cfs @ 12.27 hrs, Volume= 0.122 af, Atten= 0%, Lag= 0.0 min
Routed to Link 8L : POA-3
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 13L: Reduction
Hydrograph
0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours)
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-C Rainfall=3.41" Printed 8/29/2025 Page 22
Summary for Link 15L: Offsite
Inflow Area = 0.090 ac, 11.11% Impervious, Inflow Depth = 0.66" for 2 YR-C event Inflow = 0.02 cfs @ 12.26 hrs, Volume= 0.005 af Primary = 0.02 cfs @ 12.26 hrs, Volume= 0.005 af, Atten= 0%, Lag= 0.0 min
Routed to Link 8L : POA-3
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 15L: Offsite
Hydrograph
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-C Rainfall=3.41" Printed 8/29/2025 Page 23
Summary for Link 16L: Reduction
Inflow Area = 6.010 ac, 0.00% Impervious, Inflow Depth = 0.75" for 2 YR-C event Inflow = 1.93 cfs @ 12.36 hrs, Volume= 0.377 af Primary = 1.93 cfs @ 12.36 hrs, Volume= 0.377 af, Atten= 0%, Lag= 0.0 min
Routed to Link 7L : POA-4
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 16L: Reduction
0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours)
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-C Rainfall=3.41" Printed 8/29/2025
Page 24
Summary for Link 18L: Offsite
Inflow Area = 0.290 ac, 3.45% Impervious, Inflow Depth = 0.45" for 2 YR-C event Inflow = 0.04 cfs @ 12.48 hrs, Volume= 0.011 af Primary = 0.04 cfs @ 12.48 hrs, Volume= 0.011 af, Atten= 0%, Lag= 0.0 min
Routed to Link 7L : POA-4
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 18L: Offsite
Hydrograph
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours)
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Analysis-Existing Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
D 2 YR-C Rainfall=3.41" Printed 8/29/2025 Page 25
NOAA 24-hr D 2 YR-C Rainfall=3.41" Printed 8/29/2025
Summary for Link 20L: POA-5
Inflow Area = 0.360 ac, 0.00% Impervious, Inflow Depth = 1.06" for 2 YR-C event Inflow = 0.26 cfs @ 12.20 hrs, Volume= 0.032 af Primary = 0.26 cfs @ 12.20 hrs, Volume= 0.032 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 20L: POA-5
Hydrograph
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-F Rainfall=3.91" Printed 8/29/2025 as LLC Page 26
Summary for Subcatchment 1S: DA-E1
Runoff = 6.09 cfs @ 12.38 hrs, Volume= Routed to Link 6L : POA-1 1.096 af, Depth= 1.60"
1.096 af, Depth= 1.60"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-F Rainfall=3.91"
Area (ac) CN Description
1.050 55 Woods, Good, HSG B
7.170 78 Row crops, straight row, Good, HSG B
8.220 75 Weighted Average
8.220 75 100.00% Pervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
9.0 35 0.0200 0.07 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 3.42" Using McCuen-Spiess flow length
12.0 646 0.0100 0.90 Shallow Concentrated Flow, Cultivated Straight Rows Kv= 9.0 fps
2.6 50 0.0040 0.32 Shallow Concentrated Flow, Woodland Kv= 5.0 fps
23.6 731 Total
Subcatchment 1S: DA-E1
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-F Rainfall=3.91" Printed 8/29/2025 as LLC Page 27
Summary for Subcatchment 3S: DA-E4
Runoff = 2.86 cfs @ 12.35 hrs, Volume= 0.517 af, Depth= 1.03" Routed to Link 16L : Reduction
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-F Rainfall=3.91"
Area (ac) CN Description
3.030 55 Woods, Good, HSG B
2.980 78 Row crops, straight row, Good, HSG B
6.010 66 Weighted Average
6.010 66 100.00% Pervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
5.3 360 0.0160 1.14 Shallow Concentrated Flow, Cultivated Straight Rows Kv= 9.0 fps
2.1 62 0.0030 0.49 Shallow Concentrated Flow, Cultivated Straight Rows Kv= 9.0 fps
4.4 231 0.0300 0.87 Shallow Concentrated Flow, Woodland Kv= 5.0 fps
19.3 753 Total
7.5 100 0.0040 0.22 Sheet Flow, Fallow n= 0.050 P2= 3.42" Shallow Concentrated Flow, Cultivated Straight Rows Kv= 9.0 fps
Subcatchment 3S: DA-E4
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-F Rainfall=3.91" Printed 8/29/2025 as LLC Page 28
Summary for Subcatchment 5S: DA-E3
Runoff = 0.90 cfs @ 12.26 hrs, Volume= 0.168 af, Depth= 0.76" Routed to Link 13L : Reduction
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-F Rainfall=3.91"
Area (ac) CN Description
2.080 55 Woods, Good, HSG B
0.130 98 Paved parking, HSG B
0.380 61 >75% Grass cover, Good, HSG B
0.060 98 Roofs, HSG A
2.650 59 Weighted Average
2.460 56 92.83% Pervious Area
0.190 98 7.17% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
9.1 17 0.0180 0.03 Sheet Flow, Woods: Dense underbrush n= 0.800 P2= 3.42" Using McCuen-Spiess flow length
3.7 222 0.0400 1.00 Shallow Concentrated Flow, Woodland Kv= 5.0 fps
12.8 239 Total
Subcatchment 5S: DA-E3
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-F Rainfall=3.91" Printed 8/29/2025
R-F Rainfall=3.91" Printed 8/29/2025 Page 29
Summary for Subcatchment 6S: DA-E2
Runoff = 1.74 cfs @ 12.43 hrs, Volume=0.352 af, Depth= 1.40"
Routed to Link 10L : Reduction
0.352 af, Depth= 1.40"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-F Rainfall=3.91"
Area (ac) CN Description
0.800 55 Woods, Good, HSG B
0.010 98 Paved parking, HSG B
2.200 78 Row crops, straight row, Good, HSG B
3.010 72 Weighted Average
3.000 72 99.67% Pervious Area
0.010 98 0.33% Impervious Area
9.0 35 0.0200 0.07 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 3.42" Using McCuen-Spiess flow length
12.5 604 0.0080 0.80 Shallow Concentrated Flow, Cultivated Straight Rows Kv= 9.0 fps
1.6 48 0.0100 0.50 Shallow Concentrated Flow, Woodland Kv= 5.0 fps
4.1 496 0.0100 2.03 Shallow Concentrated Flow, Paved Kv= 20.3 fps
27.4 1 193 Total
27.4 1,193 Total
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
0.2 10 0.0300 0.87 Shallow Concentrated Flow, Woodland Kv= 5.0 fps
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-F Rainfall=3.91" Printed 8/29/2025 as LLC Page 30
Subcatchment 6S: DA-E2
Runoff
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-F Rainfall=3.91" Printed 8/29/2025 as LLC Page 31
Summary for Subcatchment 12S: DA-E2A
Runoff = 0.83 cfs @ 12.11 hrs, Volume= Routed to Link 11L : Offsite 0.061 af, Depth= 1.28"
0.061 af, Depth= 1.28"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-F Rainfall=3.91"
Area (ac) CN Description
0.040 55 Woods, Good, HSG B
0.110 96 Gravel surface, HSG B
0.390 61 >75% Grass cover, Good, HSG B
0.030 98 Roofs, HSG B
0.570 69 Weighted Average
0.540 68 94.74% Pervious Area
0.030 98 5.26% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
2.2 376 0.0200 2.87 Shallow Concentrated Flow, Paved Kv= 20.3 fps
2.7 421 Total
0.5 45 0.0300 1.43 Sheet Flow, Smooth surfaces n= 0.011 P2= 3.42"
Subcatchment 12S: DA-E2A
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-F Rainfall=3.91" Printed 8/29/2025 Page 32
Summary for Subcatchment 14S: DA-E3A
Runoff = 0.04 cfs @ 12.26 hrs, Volume= Routed to Link 15L : Offsite
0.007 af, Depth= 0.89"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-F Rainfall=3.91"
Area (ac) CN Description
0.070 55 Woods, Good, HSG B
0.010 61 >75% Grass cover, Good, HSG B
0.010 98 Roofs, HSG B
0.090 60 Weighted Average
0.080 56 88.89% Pervious Area
0.010 98 11.11% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
9.3 13 0.0100 0.02 Sheet Flow, Woods: Dense underbrush n= 0.800 P2= 3.42" Using McCuen-Spiess flow length
2.0 116 0.0190 0.96 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps
2.2 147 0.0500 1.12 Shallow Concentrated Flow, Woodland Kv= 5.0 fps
14.0 294 Total
0.5 18 0.0160 0.63 Shallow Concentrated Flow, Woodland Kv= 5.0 fps
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-F Rainfall=3.91" Printed 8/29/2025 as LLC Page 33
Subcatchment 14S: DA-E3A
Hydrograph
Hydrograph
Time (hours)
NOAA 24-hr D
20.04cfs
YR-FRainfall3.91"
Runoff Area0.090ac
Runoff Volume0.007af
Runoff Depth0.89"
Flow Length294'
Tc14.0min
CN56/98
Runoff
Time (hours)
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-F Rainfall=3.91" Printed 8/29/2025 as LLC Page 34
Summary for Subcatchment 17S: DA-E4A
Runoff = 0.06 cfs @ 12.43 hrs, Volume= Routed to Link 18L : Offsite 0.016 af, Depth= 0.64"
0.016 af, Depth= 0.64"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-F Rainfall=3.91"
Area (ac) CN Description
0.230 55 Woods, Good, HSG B
0.050 61 >75% Grass cover, Good, HSG B
0.010 98 Roofs, HSG B
0.290 58 Weighted Average
0.280 56 96.55% Pervious Area
0.010 98 3.45% Impervious Area
9.2 18 0.0200 0.03 Sheet Flow, Woods: Dense underbrush n= 0.800 P2= 3.42" Using McCuen-Spiess flow length
2.1 158 0.0200 1.27 Shallow Concentrated Flow, Cultivated Straight Rows Kv= 9.0 fps
2.1 62 0.0030 0.49 Shallow Concentrated Flow, Cultivated Straight Rows Kv= 9.0 fps
4.4 231 0.0300 0.87 Shallow Concentrated Flow, Woodland Kv= 5.0 fps
19.5 555 Total
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
1.7 86 0.0300 0.87 Shallow Concentrated Flow, Woodland Kv= 5.0 fps
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-F Rainfall=3.91" Printed 8/29/2025 Page 35
Subcatchment 17S: DA-E4A
Runoff
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-F Rainfall=3.91" Printed 8/29/2025 as LLC Page 36
Summary for Subcatchment 19S: DA-E5
Runoff = 0.35 cfs @ 12.20 hrs, Volume= Routed to Link 20L : POA-5 0.042 af, Depth= 1.40"
0.042 af, Depth= 1.40"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-F Rainfall=3.91"
Area (ac) CN Description
0.100 55 Woods, Good, HSG B
0.260 78 Row crops, straight row, Good, HSG B
0.360 72 Weighted Average
0.360 72 100.00% Pervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
9.0 35 0.0200 0.07 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 3.42" Using McCuen-Spiess flow length
1.7 212 0.0100 2.03 Shallow Concentrated Flow, Paved Kv= 20.3 fps
10.7 247 Total
10.7 247 Total
Subcatchment 19S: DA-E5
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-F Rainfall=3.91" Printed 8/29/2025 as LLC Page 37
Summary for Link 6L: POA-1
Inflow Area = 8.220 ac, 0.00% Impervious, Inflow Depth = 1.60" for 2 YR-F event Inflow = 6.09 cfs @ 12.38 hrs, Volume= 1.096 af Primary = 6.09 cfs @ 12.38 hrs, Volume= 1.096 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 6L: POA-1
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-F Rainfall=3.91" Printed 8/29/2025 as LLC Page 38
Summary for Link 7L: POA-4
Inflow Area = 6.300 ac, 0.16% Impervious, Inflow Depth = 1.01" for 2 YR-F event Inflow = 2.93 cfs @ 12.35 hrs, Volume= 0.533 af Primary = 2.93 cfs @ 12.35 hrs, Volume= 0.533 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 7L: POA-4
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-F Rainfall=3.91" Printed 8/29/2025 as LLC Page 39
Summary for Link 8L: POA-3
Inflow Area = 2.740 ac, 7.30% Impervious, Inflow Depth = 0.77" for 2 YR-F event Inflow = 0.94 cfs @ 12.26 hrs, Volume= 0.175 af Primary = 0.94 cfs @ 12.26 hrs, Volume= 0.175 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 8L: POA-3
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-F Rainfall=3.91" Printed 8/29/2025 as LLC Page 40
Summary for Link 9L: POA-2
Inflow Area = 3.580 ac, 1.12% Impervious, Inflow Depth = 1.39" for 2 YR-F event Inflow = 1.95 cfs @ 12.42 hrs, Volume= 0.413 af Primary = 1.95 cfs @ 12.42 hrs, Volume= 0.413 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 9L: POA-2
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-F Rainfall=3.91" Printed 8/29/2025 Page 41
Summary for Link 10L: Reduction
Inflow Area = 3.010 ac, 0.33% Impervious, Inflow Depth = 1.40" for 2 YR-F event Inflow = 1.74 cfs @ 12.43 hrs, Volume= 0.352 af Primary = 1.74 cfs @ 12.43 hrs, Volume= 0.352 af, Atten= 0%, Lag= 0.0 min
Routed to Link 9L : POA-2
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 10L: Reduction
0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours)
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-F Rainfall=3.91" Printed 8/29/2025 as LLC Page 42
Summary for Link 11L: Offsite
Inflow Area = 0.570 ac, 5.26% Impervious, Inflow Depth = 1.28" for 2 YR-F event Inflow = 0.83 cfs @ 12.11 hrs, Volume = 0.061 af
Primary = 0.83 cfs @ 12.11 hrs, Volume=
0.061 af, Atten= 0%, Lag= 0.0 min
Routed to Link 9L : POA-2
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 11L: Offsite
Hydrograph
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours)
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-F Rainfall=3.91" Printed 8/29/2025 as LLC Page 43
Summary for Link 13L: Reduction
Inflow Area = 2.650 ac,
7.17% Impervious, Inflow Depth = 0.76" for 2 YR-F event 12.26 hrs, Volume= 0.168 af
Inflow = 0.90 cfs @ 7.17% Impervious, Inflow Depth = 0.76" for 2 YR-F event 12.26 hrs, Volume= 0.168 af
0.168 af, Atten= 0%, Lag= 0.0 min
Primary = 0.90 cfs @ 12.26 hrs, Volume=
Routed to Link 8L : POA-3
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 13L: Reduction
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours)
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-F Rainfall=3.91" Printed 8/29/2025 Page 44
Summary for Link 15L: Offsite
Inflow Area = 0.090 ac, 11.11% Impervious, Inflow Depth = 0.89" for 2 YR-F event Inflow = 0.04 cfs @ 12.26 hrs, Volume= 0.007 af Primary = 0.04 cfs @ 12.26 hrs, Volume= 0.007 af, Atten= 0%, Lag= 0.0 min
Routed to Link 8L : POA-3
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 15L: Offsite
Hydrograph
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours)
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-F Rainfall=3.91" Printed 8/29/2025 Page 45
Summary for Link 16L: Reduction
Inflow Area = 6.010 ac, 0.00% Impervious, Inflow Depth = 1.03" for 2 YR-F event Inflow = 2.86 cfs @ 12.35 hrs, Volume= 0.517 af Primary = 2.86 cfs @ 12.35 hrs, Volume= 0.517 af, Atten= 0%, Lag= 0.0 min
Routed to Link 7L : POA-4
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 16L: Reduction
0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours)
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-F Rainfall=3.91" Printed 8/29/2025 Page 46
Page 46
Summary for Link 18L: Offsite
Inflow Area = 0.290 ac, 3.45% Impervious, Inflow Depth = 0.64" for 2 YR-F event Inflow = 0.06 cfs @ 12.43 hrs, Volume= 0.016 af Primary = 0.06 cfs @ 12.43 hrs, Volume= 0.016 af, Atten= 0%, Lag= 0.0 min
Routed to Link 7L : POA-4
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 18L: Offsite
Hydrograph
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours)
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-F Rainfall=3.91" Printed 8/29/2025
Page 47
Summary for Link 20L: POA-5
Inflow Area = 0.360 ac, 0.00% Impervious, Inflow Depth = 1.40" for 2 YR-F event Inflow = 0.35 cfs @ 12.20 hrs, Volume = 0.042 af Primary = 0.35 cfs @ 12.20 hrs, Volume = 0.042 af, Atten = 0%, Lag = 0.0 min
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 20L: POA-5
Hydrograph
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-C Rainfall=5.26" Printed 8/29/2025
Page 48
Summary for Subcatchment 1S: DA-E1
Runoff = 10.45 cfs @ 12.38 hrs, Volume= 1.823 af, Depth= 2.66" Routed to Link 6L : POA-1
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-C Rainfall=5.26"
Area (ac) CN Description
1.050 55 Woods, Good, HSG B
7.170 78 Row crops, straight row, Good, HSG B
8.220 75 Weighted Average
8.220 75 100.00% Pervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
9.0 35 0.0200 0.07 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 3.42" Using McCuen-Spiess flow length
12.0 646 0.0100 0.90 Shallow Concentrated Flow, Cultivated Straight Rows Kv= 9.0 fps
2.6 50 0.0040 0.32 Shallow Concentrated Flow, Woodland Kv= 5.0 fps
22.6 731 Total
Subcatchment 1S: DA-E1
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-C Rainfall=5.26" Printed 8/29/2025
R-C Rainfall=5.26" Printed 8/29/2025 Page 49
Summary for Subcatchment 3S: DA-E4
Runoff = 5.80 cfs @ 12.32 hrs, Volume= 0.955 af, Depth= 1.91" Routed to Link 16L : Reduction
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-C Rainfall=5.26"
Area (ac) CN Description
3.030 55 Woods, Good, HSG B
2.980 78 Row crops, straight row, Good, HSG B
6.010 66 Weighted Average
6.010 66 100.00% Pervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
7.5 100 0.0040 0.22 Sheet Flow, Fallow n= 0.050 P2= 3.42" Shallow Concentrated Flow, Cultivated Straight Rows Kv= 9.0 fps
5.3 360 0.0160 1.14
2.1 62 0.0030 0.49 Shallow Concentrated Flow, Cultivated Straight Rows Kv= 9.0 fps
4.4 231 0.0300 0.87 Shallow Concentrated Flow, Woodland Kv= 5.0 fps
19.3 753 Total
Subcatchment 3S: DA-E4
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-C Rainfall=5.26" Printed 8/29/2025 ons LLC
Page 50
Summary for Subcatchment 5S: DA-E3
Runoff = 2.12 cfs @ 12.24 hrs, Volume= 0.321 af, Depth= 1.45" Routed to Link 13L : Reduction
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-C Rainfall=5.26"
Area (ac) CN Description
2.080 55 Woods, Good, HSG B
0.130 98 Paved parking, HSG B
0.380 61 >75% Grass cover, Good, HSG B
0.060 98 Roofs, HSG A
2.650 59 Weighted Average
2.460 56 92.83% Pervious Area
0.190 98 7.17% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
9.1 17 0.0180 0.03 Sheet Flow, Woods: Dense underbrush n= 0.800 P2= 3.42" Using McCuen-Spiess flow length
3.7 222 0.0400 1.00 Shallow Concentrated Flow, Woodland Kv= 5.0 fps
12.8 239 Total
Subcatchment 5S: DA-E3
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-C Rainfall=5.26" Printed 8/29/2025
R-C Rainfall=5.26" Printed 8/29/2025 Page 51
Summary for Subcatchment 6S: DA-E2
Runoff = 3.13 cfs @ 12.42 hrs, Volume=0.604 af, Depth= 2.41"
Routed to Link 10L : Reduction
0.604 af, Depth= 2.41"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-C Rainfall=5.26"
Area (ac) CN Description
0.800 55 Woods, Good, HSG B
0.010 98 Paved parking, HSG B
2.200 78 Row crops, straight row, Good, HSG B
3.010 72 Weighted Average
3.000 72 99.67% Pervious Area
0.010 98 0.33% Impervious Area
9.0 35 0.0200 0.07 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 3.42" Using McCuen-Spiess flow length
12.5 604 0.0080 0.80 Shallow Concentrated Flow, Cultivated Straight Rows Kv= 9.0 fps
1.6 48 0.0100 0.50 Shallow Concentrated Flow, Woodland Kv= 5.0 fps
4.1 496 0.0100 2.03 Shallow Concentrated Flow, Paved Kv= 20.3 fps
27.4 1 193 Total
27.4 1,193 Total
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
0.2 10 0.0300 0.87 Shallow Concentrated Flow, Woodland Kv= 5.0 fps
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-C Rainfall=5.26" Printed 8/29/2025 ons LLC Page 52
Subcatchment 6S: DA-E2
Runoff
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-C Rainfall=5.26" Printed 8/29/2025 ons LLC Page 53
Summary for Subcatchment 12S: DA-E2A
Runoff = 1.48 cfs @ 12.11 hrs, Volume= Routed to Link 11L : Offsite 0.106 af, Depth= 2.22"
0.106 af, Depth= 2.22"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-C Rainfall=5.26"
Area (ac) CN Description
0.040 55 Woods, Good, HSG B
0.110 96 Gravel surface, HSG B
0.390 61 >75% Grass cover, Good, HSG B
0.030 98 Roofs, HSG B
0.570 69 Weighted Average
0.540 68 94.74% Pervious Area
0.030 98 5.26% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
2.2 376 0.0200 2.87 Shallow Concentrated Flow, Paved Kv= 20.3 fps
2.7 421 Total
0.5 45 0.0300 1.43 Sheet Flow, Smooth surfaces n= 0.011 P2= 3.42"
Subcatchment 12S: DA-E2A
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-C Rainfall=5.26" Printed 8/29/2025 ons LLC Page 54
Summary for Subcatchment 14S: DA-E3A
Runoff = 0.08 cfs @ 12.26 hrs, Volume= Routed to Link 15L : Offsite 0.012 af, Depth= 1.61"
0.012 af, Depth= 1.61"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-C Rainfall=5.26"
Area (ac) CN Description
0.070 55 Woods, Good, HSG B
0.010 61 >75% Grass cover, Good, HSG B
0.010 98 Roofs, HSG B
0.090 60 Weighted Average
0.080 56 88.89% Pervious Area
0.010 98 11.11% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
9.3 13 0.0100 0.02 Sheet Flow, Woods: Dense underbrush n=0.800 P2=3.42" Using McCuen-Spiess flow length
2.0 116 0.0190 0.96 Shallow Concentrated Flow, Short Grass Pasture Kv=7.0 fps
2.2 147 0.0500 1.12 Shallow Concentrated Flow, Woodland Kv=5.0 fps
14.0 294 Total
0.5 18 0.0160 0.63 Shallow Concentrated Flow, Woodland Kv=5.0 fps
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-C Rainfall=5.26" Printed 8/29/2025 ons LLC
Page 55
Subcatchment 14S: DA-E3A
Hydrograph
Runoff
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-C Rainfall=5.26" Printed 8/29/2025 ons LLC Page 56
Summary for Subcatchment 17S: DA-E4A
Runoff = 0.16 cfs @ 12.35 hrs, Volume= Routed to Link 18L : Offsite
0.032 af, Depth= 1.31"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-C Rainfall=5.26"
Area (ac) CN Description
0.230 55 Woods, Good, HSG B
0.050 61 >75% Grass cover, Good, HSG B
0.010 98 Roofs, HSG B
0.290 58 Weighted Average
0.280 56 96.55% Pervious Area
0.010 98 3.45% Impervious Area
9.2 18 0.0200 0.03 Sheet Flow, Woods: Dense underbrush n= 0.800 P2= 3.42" Using McCuen-Spiess flow length
2.1 158 0.0200 1.27 Shallow Concentrated Flow, Cultivated Straight Rows Kv= 9.0 fps
2.1 62 0.0030 0.49 Shallow Concentrated Flow, Cultivated Straight Rows Kv= 9.0 fps
4.4 231 0.0300 0.87 Shallow Concentrated Flow, Woodland Kv= 5.0 fps
19.5 555 Total
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
1.7 86 0.0300 0.87 Shallow Concentrated Flow, Woodland Kv= 5.0 fps
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-C Rainfall=5.26" Printed 8/29/2025 ons LLC Page 57
Page 57
Subcatchment 17S: DA-E4A
Hydrograph
Runoff
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-C Rainfall=5.26" Printed 8/29/2025
Page 58
Summary for Subcatchment 19S: DA-E5
Runoff = 0.62 cfs @ 12.20 hrs, Volume= Routed to Link 20L : POA-5 0.072 af, Depth= 2.40"
0.072 af, Depth= 2.40"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-C Rainfall=5.26"
Area (ac) CN Description
0.100 55 Woods, Good, HSG B
0.260 78 Row crops, straight row, Good, HSG B
0.360 72 Weighted Average
0.360 72 100.00% Pervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
9.0 35 0.0200 0.07 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 3.42" Using McCuen-Spiess flow length
1.7 212 0.0100 2.03 Shallow Concentrated Flow, Paved Kv= 20.3 fps
10.7 247 Total
Subcatchment 19S: DA-E5
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-C Rainfall=5.26" Printed 8/29/2025 ons LLC Page 59
Page 59
Summary for Link 6L: POA-1
Inflow Area = 8.220 ac, 0.00% Impervious, Inflow Depth = 2.66" for 10 YR-C event Inflow = 10.45 cfs @ 12.38 hrs, Volume= 1.823 af Primary = 10.45 cfs @ 12.38 hrs, Volume= 1.823 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 6L: POA-1
Hydrograph
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Analysis-Existing Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-C Rainfall=5.26" Printed 8/29/2025 ons LLC Page 60
Summary for Link 7L: POA-4
Inflow Area = 6.300 ac, 0.16% Impervious, Inflow Depth = 1.88" for 10 YR-C event Inflow = 5.96 cfs @ 12.32 hrs, Volume= 0.987 af Primary = 5.96 cfs @ 12.32 hrs, Volume= 0.987 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 7L: POA-4
Hydrograph
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-C Rainfall=5.26" Printed 8/29/2025 ons LLC Page 61
Summary for Link 8L: POA-3
Inflow Area = 2.740 ac, 7.30% Impervious, Inflow Depth = 1.46" for 10 YR-C event Inflow = 2.20 cfs @ 12.24 hrs, Volume= 0.333 af Primary = 2.20 cfs @ 12.24 hrs, Volume= 0.333 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt= 0.01 hrs
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 8L: POA-3
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-C Rainfall=5.26" Printed 8/29/2025 ons LLC Page 62
Summary for Link 9L: POA-2
Inflow Area = 3.580 ac, 1.12% Impervious, Inflow Depth = 2.38" for 10 YR-C event Inflow = 3.49 cfs @ 12.42 hrs, Volume= 0.710 af Primary = 3.49 cfs @ 12.42 hrs, Volume= 0.710 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 9L: POA-2
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-C Rainfall=5.26" Printed 8/29/2025 ons LLC Page 63
Summary for Link 10L: Reduction
Inflow Area = 3.010 ac, 0.33% Impervious, Inflow Depth = 2.41" for 10 YR-C event Inflow = 3.13 cfs @ 12.42 hrs, Volume= 0.604 af Primary = 3.13 cfs @ 12.42 hrs, Volume= 0.604 af, Atten= 0%, Lag= 0.0 min
Routed to Link 9L : POA-2
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 10L: Reduction
0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours)
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-C Rainfall=5.26" Printed 8/29/2025 ons LLC Page 64
Summary for Link 11L: Offsite
Inflow Area = 0.570 ac, 5.26% Impervious, Inflow Depth = 2.22" for 10 YR-C event Inflow = 1.48 cfs @ 12.11 hrs, Volume = 0.106 af Primary = 1.48 cfs @ 12.11 hrs, Volume = 0.106 af, Atten = 0%, Lag = 0.0 min
Routed to Link 9L : POA-2
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 11L: Offsite
0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours)
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-C Rainfall=5.26" Printed 8/29/2025 ons LLC Page 65
Summary for Link 13L: Reduction
7.17% Impervious, Inflow Depth = 1.45" for 10 YR-C event 12.24 hrs, Volume= 0.321 af 12.24 hrs, Volume= 0.321 af, Atten= 0%, Lag= 0.0 min
Inflow Area = 2.650 ac,
Inflow = 2.12 cfs @
Primary = 2.12 cfs @
Routed to Link 8L : POA-3
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 13L: Reduction
0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours)
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-C Rainfall=5.26" Printed 8/29/2025 ons LLC Page 66
Summary for Link 15L: Offsite
Inflow Area = 0.090 ac, 11.11% Impervious, Inflow Depth = 1.61" for 10 YR-C event Inflow = 0.08 cfs @ 12.26 hrs, Volume = 0.012 af Primary = 0.08 cfs @ 12.26 hrs, Volume = 0.012 af, Atten= 0%, Lag= 0.0 min
Routed to Link 8L : POA-3
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 15L: Offsite
Hydrograph
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours)
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-C Rainfall=5.26" Printed 8/29/2025 ons LLC Page 67
Summary for Link 16L: Reduction
Inflow Area = 6.010 ac, 0.00% Impervious, Inflow Depth = 1.91" for 10 YR-C event Inflow = 5.80 cfs @ 12.32 hrs, Volume= 0.955 af Primary = 5.80 cfs @ 12.32 hrs, Volume= 0.955 af, Atten= 0%, Lag= 0.0 min
Routed to Link 7L : POA-4
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 16L: Reduction
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours)
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
nr D 10 YR-C Rainfall=5.26" Printed 8/29/2025 Page 68
Summary for Link 18L: Offsite
Inflow Area = 0.290 ac, 3.45% Impervious, Inflow Depth = 1.31" for 10 YR-C event Inflow = 0.16 cfs @ 12.35 hrs, Volume= 0.032 af Primary = 0.16 cfs @ 12.35 hrs, Volume= 0.032 af, Atten= 0%, Lag= 0.0 min
Routed to Link 7L : POA-4
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 18L: Offsite
Hydrograph
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours)
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-C Rainfall=5.26" Printed 8/29/2025 ons LLC
Page 69
Summary for Link 20L: POA-5
Inflow Area = 0.360 ac, 0.00% Impervious, Inflow Depth = 2.40" for 10 YR-C event Inflow = 0.62 cfs @ 12.20 hrs, Volume= 0.072 af Primary = 0.62 cfs @ 12.20 hrs, Volume= 0.072 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 20L: POA-5
Hydrograph
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-F Rainfall=6.17" Printed 8/29/2025
R-F Rainfall=6.17" Printed 8/29/2025 Page 70
Summary for Subcatchment 1S: DA-E1
Runoff = 13.55 cfs @ 12.38 hrs, Volume= 2.348 af, Depth= 3.43" Routed to Link 6L : POA-1
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-F Rainfall=6.17"
Area (ac) CN Description
1.050 55 Woods, Good, HSG B
7.170 78 Row crops, straight row, Good, HSG B
8.220 75 Weighted Average
8.220 75 100.00% Pervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
9.0 35 0.0200 0.07 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 3.42" Using McCuen-Spiess flow length
12.0 646 0.0100 0.90 Shallow Concentrated Flow, Cultivated Straight Rows Kv= 9.0 fps
2.6 50 0.0040 0.32 Shallow Concentrated Flow, Woodland Kv= 5.0 fps
22.6 731 Total
Subcatchment 1S: DA-E1
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-F Rainfall=6.17" Printed 8/29/2025
Page 71
Summary for Subcatchment 3S: DA-E4
Runoff = 8.03 cfs @ 12.31 hrs, Volume= 1.286 af, Depth= 2.57" Routed to Link 16L : Reduction
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-F Rainfall=6.17"
Area (ac) CN Description
3.030 55 Woods, Good, HSG B
2.980 78 Row crops, straight row, Good, HSG B
6.010 66 Weighted Average
6.010 66 100.00% Pervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
5.3 360 0.0160 1.14 Shallow Concentrated Flow, Cultivated Straight Rows Kv= 9.0 fps
2.1 62 0.0030 0.49 Shallow Concentrated Flow, Cultivated Straight Rows Kv= 9.0 fps
4.4 231 0.0300 0.87 Shallow Concentrated Flow, Woodland Kv= 5.0 fps
19.3 753 Total
7.5 100 0.0040 0.22 Sheet Flow, Fallow n= 0.050 P2= 3.42" Shallow Concentrated Flow, Cultivated Straight Rows Kv= 9.0 fps
Subcatchment 3S: DA-E4
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-F Rainfall=6.17" Printed 8/29/2025
R-F Rainfall=6.17" Printed 8/29/2025 Page 72
Summary for Subcatchment 5S: DA-E3
Runoff = 3.12 cfs @ 12.23 hrs, Volume= 0.442 af, Depth= 2.00" Routed to Link 13L : Reduction
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-F Rainfall=6.17"
Area (ac) CN Description
2.080 55 Woods, Good, HSG B
0.130 98 Paved parking, HSG B
0.380 61 >75% Grass cover, Good, HSG B
0.060 98 Roofs, HSG A
2.650 59 Weighted Average
2.460 56 92.83% Pervious Area
0.190 98 7.17% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
9.1 17 0.0180 0.03 Sheet Flow, Woods: Dense underbrush n= 0.800 P2= 3.42" Using McCuen-Spiess flow length
3.7 222 0.0400 1.00 Shallow Concentrated Flow, Woodland Kv= 5.0 fps
12.8 239 Total
Subcatchment 5S: DA-E3
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-F Rainfall=6.17" Printed 8/29/2025
Page 73
Summary for Subcatchment 6S: DA-E2
Runoff = 4.15 cfs @ 12.42 hrs, Volume=0.788 af, Depth= 3.14"
Routed to Link 10L : Reduction
0.788 af, Depth= 3.14"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-F Rainfall=6.17"
Area (ac) CN Description
0.800 55 Woods, Good, HSG B
0.010 98 Paved parking, HSG B
2.200 78 Row crops, straight row, Good, HSG B
3.010 72 Weighted Average
3.000 72 99.67% Pervious Area
0.010 98 0.33% Impervious Area
9.0 35 0.0200 0.07 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 3.42" Using McCuen-Spiess flow length
12.5 604 0.0080 0.80 Shallow Concentrated Flow, Cultivated Straight Rows Kv= 9.0 fps
1.6 48 0.0100 0.50 Shallow Concentrated Flow, Woodland Kv= 5.0 fps
4.1 496 0.0100 2.03 Shallow Concentrated Flow, Paved Kv= 20.3 fps
27.4 1 193 Total
27.4 1,193 Total
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
0.2 10 0.0300 0.87 Shallow Concentrated Flow, Woodland Kv= 5.0 fps
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-F Rainfall=6.17" Printed 8/29/2025
Page 74
Subcatchment 6S: DA-E2
Runoff
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-F Rainfall=6.17" Printed 8/29/2025
Page 75
Summary for Subcatchment 12S: DA-E2A
Runoff = 1.96 cfs @ 12.11 hrs, Volume= Routed to Link 11L : Offsite 0.139 af, Depth= 2.92"
0.139 af, Depth= 2.92"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-F Rainfall=6.17"
Area (ac) CN Description
0.040 55 Woods, Good, HSG B
0.110 96 Gravel surface, HSG B
0.390 61 >75% Grass cover, Good, HSG B
0.030 98 Roofs, HSG B
0.570 69 Weighted Average
0.540 68 94.74% Pervious Area
0.030 98 5.26% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
2.2 376 0.0200 2.87 Shallow Concentrated Flow, Paved Kv= 20.3 fps
2.7 421 Total
0.5 45 0.0300 1.43 Sheet Flow, Smooth surfaces n= 0.011 P2= 3.42"
Subcatchment 12S: DA-E2A
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-F Rainfall=6.17" Printed 8/29/2025
R-F Rainfall=6.17" Printed 8/29/2025 Page 76
Summary for Subcatchment 14S: DA-E3A
Runoff = 0.11 cfs @ 12.26 hrs, Volume=0.016 af, Depth= 2.17"
Routed to Link 15L : Offsite
0.016 af, Depth= 2.17"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-F Rainfall=6.17"
Area (ac) CN Description
0.070 55 Woods, Good, HSG B
0.010 61 >75% Grass cover, Good, HSG B
0.010 98 Roofs, HSG B
0.090 60 Weighted Average
0.080 56 88.89% Pervious Area
0.010 98 11.11% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
9.3 13 0.0100 0.02 Sheet Flow, Woods: Dense underbrush n= 0.800 P2= 3.42" Using McCuen-Spiess flow length
2.0 116 0.0190 0.96 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps
2.2 147 0.0500 1.12 Shallow Concentrated Flow, Woodland Kv= 5.0 fps
14.0 294 Total
0.5 18 0.0160 0.63 Shallow Concentrated Flow, Woodland Kv= 5.0 fps
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-F Rainfall=6.17" Printed 8/29/2025 ons LLC Page 77
Subcatchment 14S: DA-E3A
Hydrograph
Runoff
Page 106 Download HTML
Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-F Rainfall=6.17" Printed 8/29/2025
YR-F Rainfall=6.17" Printed 8/29/2025 Page 78
Summary for Subcatchment 17S: DA-E4A
Runoff = 0.25 cfs @ 12.35 hrs, Volume= Routed to Link 18L : Offsite
0.045 af, Depth= 1.84"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-F Rainfall=6.17"
Area (ac) CN Description
0.230 55 Woods, Good, HSG B
0.050 61 >75% Grass cover, Good, HSG B
0.010 98 Roofs, HSG B
0.290 58 Weighted Average
0.280 56 96.55% Pervious Area
0.010 98 3.45% Impervious Area
9.2 18 0.0200 0.03 Sheet Flow, Woods: Dense underbrush n= 0.800 P2= 3.42" Using McCuen-Spiess flow length
2.1 158 0.0200 1.27 Shallow Concentrated Flow, Cultivated Straight Rows Kv= 9.0 fps
2.1 62 0.0030 0.49 Shallow Concentrated Flow, Cultivated Straight Rows Kv= 9.0 fps
4.4 231 0.0300 0.87 Shallow Concentrated Flow, Woodland Kv= 5.0 fps
19.5 555 Total
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
1.7 86 0.0300 0.87 Shallow Concentrated Flow, Woodland Kv= 5.0 fps
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-F Rainfall=6.17" Printed 8/29/2025 ons LLC Page 79
Subcatchment 17S: DA-E4A
Runoff
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-F Rainfall=6.17" Printed 8/29/2025 ons LLC Page 80
Summary for Subcatchment 19S: DA-E5
Runoff = 0.82 cfs @ 12.20 hrs, Volume= Routed to Link 20L : POA-5 0.094 af, Depth= 3.13"
0.094 af, Depth= 3.13"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-F Rainfall=6.17"
Area (ac) CN Description
0.100 55 Woods, Good, HSG B
0.260 78 Row crops, straight row, Good, HSG B
0.360 72 Weighted Average
0.360 72 100.00% Pervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
9.0 35 0.0200 0.07 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 3.42" Using McCuen-Spiess flow length
1.7 212 0.0100 2.03 Shallow Concentrated Flow, Paved Kv= 20.3 fps
10.7 247 Total
10.7 247 Total
Subcatchment 19S: DA-E5
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-F Rainfall=6.17" Printed 8/29/2025 ons LLC Page 81
Summary for Link 6L: POA-1
Inflow Area = 8.220 ac, 0.00% Impervious, Inflow Depth = 3.43" for 10 YR-F event Inflow = 13.55 cfs @ 12.38 hrs, Volume= 2.348 af Primary = 13.55 cfs @ 12.38 hrs, Volume= 2.348 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 6L: POA-1
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-F Rainfall=6.17" Printed 8/29/2025 ons LLC Page 82
Summary for Link 7L: POA-4
Inflow Area = 6.300 ac, 0.16% Impervious, Inflow Depth = 2.53" for 10 YR-F event Inflow = 8.27 cfs @ 12.31 hrs, Volume = 1.330 af Primary = 8.27 cfs @ 12.31 hrs, Volume = 1.330 af, Atten = 0%, Lag = 0.0 min
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 7L: POA-4
Hydrograph
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-F Rainfall=6.17" Printed 8/29/2025 ons LLC Page 83
Summary for Link 8L: POA-3
Inflow Area = 2.740 ac, 7.30% Impervious, Inflow Depth = 2.01" for 10 YR-F event Inflow = 3.22 cfs @ 12.23 hrs, Volume= 0.458 af Primary = 3.22 cfs @ 12.23 hrs, Volume= 0.458 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 8L: POA-3
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-F Rainfall=6.17" Printed 8/29/2025 ons LLC Page 84
Summary for Link 9L: POA-2
Inflow Area = 3.580 ac, 1.12% Impervious, Inflow Depth = 3.11" for 10 YR-F event Inflow = 4.61 cfs @ 12.42 hrs, Volume= 0.927 af Primary = 4.61 cfs @ 12.42 hrs, Volume= 0.927 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 9L: POA-2
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-F Rainfall=6.17" Printed 8/29/2025 ons LLC Page 85
Summary for Link 10L: Reduction
0.33% Impervious, Inflow Depth = 3.14" for 10 YR-F event 12.42 hrs, Volume= 0.788 af
Inflow Area = 3.010 ac,
Inflow = 4.15 cfs @
0.788 af, Atten= 0%, Lag= 0.0 min
Primary = 4.15 cfs @ 12.42 hrs, Volume=
Routed to Link 9L : POA-2
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 10L: Reduction
0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours)
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-F Rainfall=6.17" Printed 8/29/2025 ons LLC Page 86
Summary for Link 11L: Offsite
Inflow Area = 0.570 ac, 5.26% Impervious, Inflow Depth = 2.92" for 10 YR-F event Inflow = 1.96 cfs @ 12.11 hrs, Volume= 0.139 af Primary = 1.96 cfs @ 12.11 hrs, Volume= 0.139 af, Atten= 0%, Lag= 0.0 min
Routed to Link 9L : POA-2
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 11L: Offsite
Hydrograph
0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours)
Page 115 Download HTML
Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-F Rainfall=6.17" Printed 8/29/2025 ons LLC Page 87
Summary for Link 13L: Reduction
7.17% Impervious, Inflow Depth = 2.00" for 10 YR-F event 12.23 hrs, Volume= 0.442 af 12.23 hrs, Volume= 0.442 af, Atten= 0%, Lag= 0.0 min
Inflow Area = 2.650 ac,
Inflow = 3.12 cfs @
Primary = 3.12 cfs @
Routed to Link 8L : POA-3
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 13L: Reduction
0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours)
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-F Rainfall=6.17" Printed 8/29/2025 ons LLC Page 88
Summary for Link 15L: Offsite
Inflow Area = 0.090 ac, 11.11% Impervious, Inflow Depth = 2.17" for 10 YR-F event Inflow = 0.11 cfs @ 12.26 hrs, Volume = 0.016 af Primary = 0.11 cfs @ 12.26 hrs, Volume = 0.016 af, Atten= 0%, Lag= 0.0 min
Routed to Link 8L : POA-3
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 15L: Offsite
Hydrograph
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours)
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-F Rainfall=6.17" Printed 8/29/2025 ons LLC Page 89
Summary for Link 16L: Reduction
Inflow Area = 6.010 ac, 0.00% Impervious, Inflow Depth = 2.57" for 10 YR-F event Inflow = 8.03 cfs @ 12.31 hrs, Volume = 1.286 af
0.00% Impervious, Inflow Depth = 2.57" for 10 YR-F event 12.31 hrs, Volume= 1.286 af 12.31 hrs, Volume= 1.286 af, Atten= 0%, Lag= 0.0 min
12.31 hrs, Volume= 1.286 af, Atten= 0%, Lag= 0.0 min
Primary = 8.03 cfs @
Routed to Link 7L : POA-4
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 16L: Reduction
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours)
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-F Rainfall=6.17" Printed 8/29/2025 ons LLC Page 90
Summary for Link 18L: Offsite
Inflow Area = 0.290 ac, 3.45% Impervious, Inflow Depth = 1.84" for 10 YR-F event Inflow = 0.25 cfs @ 12.35 hrs, Volume= 0.045 af Primary = 0.25 cfs @ 12.35 hrs, Volume= 0.045 af, Atten= 0%, Lag= 0.0 min
Routed to Link 7L : POA-4
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 18L: Offsite
Hydrograph
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours)
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-F Rainfall=6.17" Printed 8/29/2025
Page 91
Summary for Link 20L: POA-5
Inflow Area = 0.360 ac, 0.00% Impervious, Inflow Depth = 3.13" for 10 YR-F event Inflow = 0.82 cfs @ 12.20 hrs, Volume= 0.094 af Primary = 0.82 cfs @ 12.20 hrs, Volume= 0.094 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 20L: POA-5
Hydrograph
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 100 YR-C Rainfall=8.95" Printed 8/29/2025 tions LLC Page 92
Summary for Subcatchment 1S: DA-E1
Runoff = 23.39 cfs @ 12.38 hrs, Volume= 4.046 af, Depth= 5.91" Routed to Link 6L : POA-1
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 100 YR-C Rainfall=8.95"
Area (ac)CNDescription
1.05055Woods, Good, HSG B
7.17078Row crops, straight row, Good, HSG B
8.22075Weighted Average
8.22075100.00% Pervious Area
Tc (min)Length (feet)Slope (ft/ft)Velocity (ft/sec)Capacity (cfs)Description
9.0350.02000.07Sheet Flow, Woods: Light underbrush n= 0.400 P2= 3.42" Using McCuen-Spiess flow length
12.06460.01000.90Shallow Concentrated Flow, Cultivated Straight Rows Kv= 9.0 fps
2.6500.00400.32Shallow Concentrated Flow, Woodland Kv= 5.0 fps
22.6724Total
Subcatchment 1S: DA-E1
Runoff
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 100 YR-C Rainfall=8.95" Printed 8/29/2025 tions LLC Page 93
Summary for Subcatchment 3S: DA-E4
Runoff = 15.46 cfs @ 12.31 hrs, Volume= 2.403 af, Depth= 4.80" Routed to Link 16L : Reduction
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 100 YR-C Rainfall=8.95"
Area (ac) CN Description
3.030 55 Woods, Good, HSG B
2.980 78 Row crops, straight row, Good, HSG B
6.010 66 Weighted Average
6.010 66 100.00% Pervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
5.3 360 0.0160 1.14 Shallow Concentrated Flow, Cultivated Straight Rows Kv= 9.0 fps
2.1 62 0.0030 0.49 Shallow Concentrated Flow, Cultivated Straight Rows Kv= 9.0 fps
4.4 231 0.0300 0.87 Shallow Concentrated Flow, Woodland Kv= 5.0 fps
19.3 753 Total
7.5 100 0.0040 0.22 Sheet Flow, Fallow n= 0.050 P2= 3.42" Shallow Concentrated Flow, Cultivated Straight Rows Kv= 9.0 fps
Subcatchment 3S: DA-E4
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 100 YR-C Rainfall=8.95" Printed 8/29/2025 tions LLC Page 94
Summary for Subcatchment 5S: DA-E3
Runoff = 6.62 cfs @ 12.23 hrs, Volume= 0.870 af, Depth= 3.94" Routed to Link 13L : Reduction
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 100 YR-C Rainfall=8.95"
Area (ac) CN Description
2.080 55 Woods, Good, HSG B
0.130 98 Paved parking, HSG B
0.380 61 >75% Grass cover, Good, HSG B
0.060 98 Roofs, HSG A
2.650 59 Weighted Average
2.460 56 92.83% Pervious Area
0.190 98 7.17% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
9.1 17 0.0180 0.03 Sheet Flow, Woods: Dense underbrush n= 0.800 P2= 3.42" Using McCuen-Spiess flow length
3.7 222 0.0400 1.00 Shallow Concentrated Flow, Woodland Kv= 5.0 fps
12.8 239 Total
Subcatchment 5S: DA-E3
Hydrograph
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Analysis-Existing Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 100 YR-C Rainfall=8.95" Printed 8/29/2025
R-C Rainfall=8.95" Printed 8/29/2025 Page 95
Summary for Subcatchment 6S: DA-E2
Runoff = 7.41 cfs @ 12.42 hrs, Volume=1.392 af, Depth= 5.55"
Routed to Link 10L : Reduction
1.392 af, Depth= 5.55"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 100 YR-C Rainfall=8.95"
Area (ac) CN Description
0.800 55 Woods, Good, HSG B
0.010 98 Paved parking, HSG B
2.200 78 Row crops, straight row, Good, HSG B
3.010 72 Weighted Average
3.000 72 99.67% Pervious Area
0.010 98 0.33% Impervious Area
9.0 35 0.0200 0.07 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 3.42" Using McCuen-Spiess flow length
12.5 604 0.0080 0.80 Shallow Concentrated Flow, Cultivated Straight Rows Kv= 9.0 fps
1.6 48 0.0100 0.50 Shallow Concentrated Flow, Woodland Kv= 5.0 fps
4.1 496 0.0100 2.03 Shallow Concentrated Flow, Paved Kv= 20.3 fps
27.4 1 193 Total
27.4 1,193 Total
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
0.2 10 0.0300 0.87 Shallow Concentrated Flow, Woodland Kv= 5.0 fps
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Analysis-Existing Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 100 YR-C Rainfall=8.95" Printed 8/29/2025 tions LLC Page 96
Subcatchment 6S: DA-E2
Hydrograph
Runoff
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 100 YR-C Rainfall=8.95" Printed 8/29/2025 tions LLC Page 97
Summary for Subcatchment 12S: DA-E2A
Runoff = 3.51 cfs @ 12.11 hrs, Volume= Routed to Link 11L : Offsite 0.249 af, Depth= 5.24"
0.249 af, Depth= 5.24"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 100 YR-C Rainfall=8.95"
Area (ac) CN Description
0.040 55 Woods, Good, HSG B
0.110 96 Gravel surface, HSG B
0.390 61 >75% Grass cover, Good, HSG B
0.030 98 Roofs, HSG B
0.570 69 Weighted Average
0.540 68 94.74% Pervious Area
0.030 98 5.26% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
2.2 376 0.0200 2.87 Shallow Concentrated Flow, Paved Kv= 20.3 fps
2.7 421 Total
0.5 45 0.0300 1.43 Sheet Flow, Smooth surfaces n= 0.011 P2= 3.42"
Subcatchment 12S: DA-E2A
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 100 YR-C Rainfall=8.95" Printed 8/29/2025 tions LLC Page 98
Summary for Subcatchment 14S: DA-E3A
Runoff = 0.22 cfs @ 12.25 hrs, Volume= Routed to Link 15L : Offsite 0.031 af, Depth= 4.14"
0.031 af, Depth= 4.14"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 100 YR-C Rainfall=8.95"
Area (ac) CN Description
0.070 55 Woods, Good, HSG B
0.010 61 >75% Grass cover, Good, HSG B
0.010 98 Roofs, HSG B
0.090 60 Weighted Average
0.080 56 88.89% Pervious Area
0.010 98 11.11% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
9.3 13 0.0100 0.02 Sheet Flow, Woods: Dense underbrush n=0.800 P2=3.42" Using McCuen-Spiess flow length
2.0 116 0.0190 0.96 Shallow Concentrated Flow, Short Grass Pasture Kv=7.0 fps
2.2 147 0.0500 1.12 Shallow Concentrated Flow, Woodland Kv=5.0 fps
14.0 294 Total
0.5 18 0.0160 0.63 Shallow Concentrated Flow, Woodland Kv=5.0 fps
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 100 YR-C Rainfall=8.95" Printed 8/29/2025 tions LLC Page 99
Subcatchment 14S: DA-E3A
Hydrograph
Hydrograph
Runoff
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 100 YR-C Rainfall=8.95" Printed 8/29/2025 tions LLC Page 100
Summary for Subcatchment 17S: DA-E4A
Runoff = 0.55 cfs @ 12.31 hrs, Volume= Routed to Link 18L : Offsite 0.091 af, Depth= 3.75"
0.091 af, Depth= 3.75"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 100 YR-C Rainfall=8.95"
Area (ac) CN Description
0.230 55 Woods, Good, HSG B
0.050 61 >75% Grass cover, Good, HSG B
0.010 98 Roofs, HSG B
0.290 58 Weighted Average
0.280 56 96.55% Pervious Area
0.010 98 3.45% Impervious Area
9.2 18 0.0200 0.03 Sheet Flow, Woods: Dense underbrush n= 0.800 P2= 3.42" Using McCuen-Spiess flow length
2.1 158 0.0200 1.27 Shallow Concentrated Flow, Cultivated Straight Rows Kv= 9.0 fps
2.1 62 0.0030 0.49 Shallow Concentrated Flow, Cultivated Straight Rows Kv= 9.0 fps
4.4 231 0.0300 0.87 Shallow Concentrated Flow, Woodland Kv= 5.0 fps
19.5 555 Total
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
1.7 86 0.0300 0.87 Shallow Concentrated Flow, Woodland Kv= 5.0 fps
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
YR-C Rainfall=8.95" Printed 8/29/2025 Page 101
NOAA 24-hr D 100 YR-C Rainfall=8.95" Printed 8/29/2025
Subcatchment 17S: DA-E4A
Hydrograph
Runoff
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Analysis-Existing Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 100 YR-C Rainfall=8.95" Printed 8/29/2025 tions LLC Page 102
Summary for Subcatchment 19S: DA-E5
P , Volume= 0.166 af, Depth= 5.54"
Runoff = 1.45 cfs @ 12.20 hrs, Volume= Routed to Link 20L : POA-5
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dts NOAA 24-hr D 100 YR-C Rainfall=8.95"
Area (ac) CN Description
0.100 55 Woods, Good, HSG B
0.260 78 Row crops, straight row, Good, HSG B
0.360 72 Weighted Average
0.360 72 100.00% Pervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
9.0 35 0.0200 0.07 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 3.42" Using McCuen-Spiess flow length
1.7 212 0.0100 2.03 Shallow Concentrated Flow, Paved Kv= 20.3 fps
10.7 247 Total
Subcatchment 19S: DA-E5
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCAD\circledR 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
YR-C Rainfall=8.95" Printed 8/29/2025 Page 103
NOAA 24-hr D 100 YR-C Rainfall=8.95" Printed 8/29/2025
Summary for Link 6L: POA-1
Inflow Area = 8.220 ac, 0.00% Impervious, Inflow Depth = 5.91" for 100 YR-C event Inflow = 23.39 cfs @ 12.38 hrs, Volume= 4.046 af Primary = 23.39 cfs @ 12.38 hrs, Volume= 4.046 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 6L: POA-1
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 100 YR-C Rainfall=8.95" Printed 8/29/2025
YR-C Rainfall=8.95" Printed 8/29/2025 Page 104
Summary for Link 7L: POA-4
Inflow Area = 6.300 ac, 0.16% Impervious, Inflow Depth = 4.75" for 100 YR-C event Inflow = 16.02 cfs @ 12.31 hrs, Volume = 2.494 af Primary = 16.02 cfs @ 12.31 hrs, Volume = 2.494 af, Atten = 0%, Lag = 0.0 min
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 7L: POA-4
Hydrograph
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 100 YR-C Rainfall=8.95" Printed 8/29/2025
-C Rainfall=8.95" Printed 8/29/2025 Page 105
Summary for Link 8L: POA-3
Inflow Area = 2.740 ac, 7.30% Impervious, Inflow Depth = 3.95" for 100 YR-C event Inflow = 6.85 cfs @ 12.23 hrs, Volume= 0.902 af Primary = 6.85 cfs @ 12.23 hrs, Volume= 0.902 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 8L: POA-3
Hydrograph
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Analysis-Existing Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 100 YR-C Rainfall=8.95" Printed 8/29/2025
R-C Rainfall=8.95" Printed 8/29/2025 Page 106
Summary for Link 9L: POA-2
Inflow Area = 3.580 ac, 1.12% Impervious, Inflow Depth = 5.50" for 100 YR-C event Inflow = 8.21 cfs @ 12.42 hrs, Volume= 1.640 af Primary = 8.21 cfs @ 12.42 hrs, Volume= 1.640 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 9L: POA-2
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Analysis-Existing Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 100 YR-C Rainfall=8.95" Printed 8/29/2025 tions LLC Page 107
Summary for Link 10L: Reduction
Inflow Area = 3.010 ac, 0.33% Impervious, Inflow Depth = 5.55" for 100 YR-C event Inflow = 7.41 cfs @ 12.42 hrs, Volume= 1.392 af Primary = 7.41 cfs @ 12.42 hrs, Volume= 1.392 af, Atten= 0%, Lag= 0.0 min
Routed to Link 9L : POA-2
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 10L: Reduction
Hydrograph
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours)
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 100 YR-C Rainfall=8.95" Printed 8/29/2025
Page 108
Summary for Link 11L: Offsite
Inflow Area = 0.570 ac, 5.26% Impervious, Inflow Depth = 5.24" for 100 YR-C event Inflow = 3.51 cfs @ 12.11 hrs, Volume= 0.249 af Primary = 3.51 cfs @ 12.11 hrs, Volume= 0.249 af, Atten= 0%, Lag= 0.0 min
Routed to Link 9L : POA-2
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 11L: Offsite
Hydrograph
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours)
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Analysis-Existing Conditions NOAA 2 Prepared by Civil Core Consulting HydroCAD\circledR 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
YR-C Rainfall=8.95" Printed 8/29/2025 Page 109
NOAA 24-hr D 100 YR-C Rainfall=8.95" Printed 8/29/2025
Summary for Link 13L: Reduction
7.17% Impervious, Inflow Depth = 3.94" for 100 YR-C event 12.23 hrs, Volume= 0.870 af 12.23 hrs, Volume= 0.870 af, Atten= 0%, Lag= 0.0 min
Inflow Area = 2.650 ac,
Inflow = 6.62 cfs @
Primary = 6.62 cfs @
Routed to Link 8L : POA-3
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 13L: Reduction
Hydrograph
0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours)
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 100 YR-C Rainfall=8.95" Printed 8/29/2025
Page 110
Summary for Link 15L: Offsite
Inflow Area = 0.090 ac, 11.11% Impervious, Inflow Depth = 4.14" for 100 YR-C event Inflow = 0.22 cfs @ 12.25 hrs, Volume= 0.031 af Primary = 0.22 cfs @ 12.25 hrs, Volume= 0.031 af, Atten= 0%, Lag= 0.0 min
Routed to Link 8L : POA-3
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 15L: Offsite
Hydrograph
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours)
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
00 YR-C Rainfall=8.95" Printed 8/29/2025 Page 111
NOAA 24-hr D 100 YR-C Rainfall=8.95" Printed 8/29/2025
Summary for Link 16L: Reduction
Inflow Area = 6.010 ac, 0.00% Impervious, Inflow Depth = 4.80" for 100 YR-C event Inflow = 15.46 cfs @ 12.31 hrs, Volume = 2.403 af Primary = 15.46 cfs @ 12.31 hrs, Volume = 2.403 af, Atten = 0%, Lag = 0.0 min
Routed to Link 7L : POA-4
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 16L: Reduction
Hydrograph
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours)
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Analysis-Existing Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 100 YR-C Rainfall=8.95" Printed 8/29/2025
Page 112
Summary for Link 18L: Offsite
Inflow Area = 0.290 ac, 3.45% Impervious, Inflow Depth = 3.75" for 100 YR-C event Inflow = 0.55 cfs @ 12.31 hrs, Volume= 0.091 af Primary = 0.55 cfs @ 12.31 hrs, Volume= 0.091 af, Atten= 0%, Lag= 0.0 min
Routed to Link 7L : POA-4
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 18L: Offsite
Hydrograph
0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours)
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 100 YR-C Rainfall=8.95" Printed 8/29/2025
C Rainfall=8.95" Printed 8/29/2025 Page 113
Summary for Link 20L: POA-5
Inflow Area = 0.360 ac, 0.00% Impervious, Inflow Depth = 5.54" for 100 YR-C event Inflow = 1.45 cfs @ 12.20 hrs, Volume = 0.166 af
Primary = 1.45 cfs @ 12.20 hrs, Volume=
flow Depth = 5.54" for 100 YR-C event 0.166 af 0.166 af, Atten=0%, Lag=0.0 min
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 20L: POA-5
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 100 YR-F Rainfall=11.84" Printed 8/29/2025
F Rainfall=11.84" Printed 8/29/2025 Page 114
Summary for Subcatchment 1S: DA-E1
Runoff = 33.81 cfs @ 12.37 hrs, Volume= 5.895 af, Depth= 8.61" Routed to Link 6L : POA-1
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 100 YR-F Rainfall=11.84"
Area (ac) CN Description
1.050 55 Woods, Good, HSG B
7.170 78 Row crops, straight row, Good, HSG B
8.220 75 Weighted Average
8.220 75 100.00% Pervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
9.0 35 0.0200 0.07 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 3.42" Using McCuen-Spiess flow length
12.0 646 0.0100 0.90 Shallow Concentrated Flow, Cultivated Straight Rows Kv= 9.0 fps
2.6 50 0.0040 0.32 Shallow Concentrated Flow, Woodland Kv= 5.0 fps
23.6 731 Total
Subcatchment 1S: DA-E1
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 100 YR-F Rainfall=11.84" Printed 8/29/2025
F Rainfall=11.84" Printed 8/29/2025 Page 115
Summary for Subcatchment 3S: DA-E4
Runoff = 23.70 cfs @ 12.31 hrs, Volume= 3.667 af, Depth= 7.32" Routed to Link 16L : Reduction
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 100 YR-F Rainfall=11.84"
Area (ac) CN Description
3.030 55 Woods, Good, HSG B
2.980 78 Row crops, straight row, Good, HSG B
6.010 66 Weighted Average
6.010 66 100.00% Pervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
5.3 360 0.0160 1.14 Shallow Concentrated Flow, Cultivated Straight Rows Kv= 9.0 fps
2.1 62 0.0030 0.49 Shallow Concentrated Flow, Cultivated Straight Rows Kv= 9.0 fps
4.4 231 0.0300 0.87 Shallow Concentrated Flow, Woodland Kv= 5.0 fps
19.3 753 Total
7.5 100 0.0040 0.22 Sheet Flow, Fallow n= 0.050 P2= 3.42" Shallow Concentrated Flow, Cultivated Straight Rows Kv= 9.0 fps
Subcatchment 3S: DA-E4
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 100 YR-F Rainfall=11.84" Printed 8/29/2025 utions LLC Page 116
Summary for Subcatchment 5S: DA-E3
Runoff = 10.73 cfs @ 12.23 hrs, Volume= 1.376 af, Depth= 6.23" Routed to Link 13L : Reduction
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 100 YR-F Rainfall=11.84"
Area (ac) CN Description
2.080 55 Woods, Good, HSG B
0.130 98 Paved parking, HSG B
0.380 61 >75% Grass cover, Good, HSG B
0.060 98 Roofs, HSG A
2.650 59 Weighted Average
2.460 56 92.83% Pervious Area
0.190 98 7.17% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
9.1 17 0.0180 0.03 Sheet Flow, Woods: Dense underbrush n= 0.800 P2= 3.42" Using McCuen-Spiess flow length
3.7 222 0.0400 1.00 Shallow Concentrated Flow, Woodland Kv= 5.0 fps
12.8 239 Total
Subcatchment 5S: DA-E3
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Analysis-Existing Conditions NOAA 24 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 100 YR-F Rainfall=11.84" Printed 8/29/2025
-F Rainfall=11.84" Printed 8/29/2025 Page 117
Summary for Subcatchment 6S: DA-E2
Runoff = 10.91 cfs @ 12.42 hrs, Volume=2.056 af, Depth= 8.20"
Routed to Link 10L : Reduction
2.056 af, Depth= 8.20"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 100 YR-F Rainfall=11.84"
Area (ac) CN Description
0.800 55 Woods, Good, HSG B
0.010 98 Paved parking, HSG B
2.200 78 Row crops, straight row, Good, HSG B
3.010 72 Weighted Average
3.000 72 99.67% Pervious Area
0.010 98 0.33% Impervious Area
9.0 35 0.0200 0.07 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 3.42" Using McCuen-Spiess flow length
12.5 604 0.0080 0.80 Shallow Concentrated Flow, Cultivated Straight Rows Kv= 9.0 fps
1.6 48 0.0100 0.50 Shallow Concentrated Flow, Woodland Kv= 5.0 fps
4.1 496 0.0100 2.03 Shallow Concentrated Flow, Paved Kv= 20.3 fps
27.4 1 193 Total
27.4 1,193 Total
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
0.2 10 0.0300 0.87 Shallow Concentrated Flow, Woodland Kv= 5.0 fps
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Analysis-Existing Conditions NOAA 24 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 100 YR-F Rainfall=11.84" Printed 8/29/2025
R-F Rainfall=11.84" Printed 8/29/2025 Page 118
Subcatchment 6S: DA-E2
Hydrograph
Runoff
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 100 YR-F Rainfall=11.84" Printed 8/29/2025 utions LLC Page 119
Summary for Subcatchment 12S: DA-E2A
Runoff = 5.18 cfs @ 12.11 hrs, Volume= Routed to Link 11L : Offsite 0.372 af, Depth= 7.82"
0.372 af, Depth= 7.82"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 100 YR-F Rainfall=11.84"
Area (ac) CN Description
0.040 55 Woods, Good, HSG B
0.110 96 Gravel surface, HSG B
0.390 61 >75% Grass cover, Good, HSG B
0.030 98 Roofs, HSG B
0.570 69 Weighted Average
0.540 68 94.74% Pervious Area
0.030 98 5.26% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
2.2 376 0.0200 2.87 Shallow Concentrated Flow, Paved Kv= 20.3 fps
2.7 421 Total
0.5 45 0.0300 1.43 Sheet Flow, Smooth surfaces n= 0.011 P2= 3.42"
Subcatchment 12S: DA-E2A
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Analysis-Existing Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 100 YR-F Rainfall=11.84" Printed 8/29/2025
F Rainfall=11.84" Printed 8/29/2025 Page 120
Summary for Subcatchment 14S: DA-E3A
Runoff = 0.36 cfs @ 12.23 hrs, Volume= Routed to Link 15L : Offsite 0.048 af, Depth= 6.46"
0.048 af, Depth= 6.46"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 100 YR-F Rainfall=11.84"
Area (ac) CN Description
0.070 55 Woods, Good, HSG B
0.010 61 >75% Grass cover, Good, HSG B
0.010 98 Roofs, HSG B
0.090 60 Weighted Average
0.080 56 88.89% Pervious Area
0.010 98 11.11% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
9.3 13 0.0100 0.02 Sheet Flow, Woods: Dense underbrush n=0.800 P2=3.42" Using McCuen-Spiess flow length
2.0 116 0.0190 0.96 Shallow Concentrated Flow, Short Grass Pasture Kv=7.0 fps
2.2 147 0.0500 1.12 Shallow Concentrated Flow, Woodland Kv=5.0 fps
14.0 294 Total
0.5 18 0.0160 0.63 Shallow Concentrated Flow, Woodland Kv=5.0 fps
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 100 YR-F Rainfall=11.84" Printed 8/29/2025
YR-F Rainfall=11.84" Printed 8/29/2025 Page 121
Subcatchment 14S: DA-E3A
Hydrograph
Runoff
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 100 YR-F Rainfall=11.84" Printed 8/29/2025
F Rainfall=11.84" Printed 8/29/2025 Page 122
Summary for Subcatchment 17S: DA-E4A
Runoff = 0.92 cfs @ 12.31 hrs, Volume= Routed to Link 18L : Offsite
0.145 af, Depth= 6.02"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 100 YR-F Rainfall=11.84"
Area (ac) CN Description
0.230 55 Woods, Good, HSG B
0.050 61 >75% Grass cover, Good, HSG B
0.010 98 Roofs, HSG B
0.290 58 Weighted Average
0.280 56 96.55% Pervious Area
0.010 98 3.45% Impervious Area
9.2 18 0.0200 0.03 Sheet Flow, Woods: Dense underbrush n= 0.800 P2= 3.42" Using McCuen-Spiess flow length
2.1 158 0.0200 1.27 Shallow Concentrated Flow, Cultivated Straight Rows Kv= 9.0 fps
2.1 62 0.0030 0.49 Shallow Concentrated Flow, Cultivated Straight Rows Kv= 9.0 fps
4.4 231 0.0300 0.87 Shallow Concentrated Flow, Woodland Kv= 5.0 fps
19.5 555 Total
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
1.7 86 0.0300 0.87 Shallow Concentrated Flow, Woodland Kv= 5.0 fps
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 100 YR-F Rainfall=11.84" Printed 8/29/2025
R-F Rainfall=11.84" Printed 8/29/2025 Page 123
Subcatchment 17S: DA-E4A
Flow (cfs)
Runoff
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Analysis-Existing Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 100 YR-F Rainfall=11.84" Printed 8/29/2025
F Rainfall=11.84" Printed 8/29/2025 Page 124
Summary for Subcatchment 19S: DA-E5
Runoff = 2.12 cfs @ 12.20 hrs, Volume= 0.246 af, Depth= 8.18" Routed to Link 20L : POA-5
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 100 YR-F Rainfall=11.84"
Area (ac) CN Description
0.100 55 Woods, Good, HSG B
0.260 78 Row crops, straight row, Good, HSG B
0.360 72 Weighted Average
0.360 72 100.00% Pervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
9.0 35 0.0200 0.07 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 3.42" Using McCuen-Spiess flow length
1.7 212 0.0100 2.03 Shallow Concentrated Flow, Paved Kv= 20.3 fps
10.7 247 Total
10.7 247 Total
Subcatchment 19S: DA-E5
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCAD\circledR 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
100 YR-F Rainfall=11.84" Printed 8/29/2025 Page 125
NOAA 24-hr D 100 YR-F Rainfall=11.84" Printed 8/29/2025
Summary for Link 6L: POA-1
Inflow Area = 8.220 ac, 0.00% Impervious, Inflow Depth = 8.61" for 100 YR-F event Inflow = 33.81 cfs @ 12.37 hrs, Volume= 5.895 af Primary = 33.81 cfs @ 12.37 hrs, Volume= 5.895 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 6L: POA-1
Hydrograph
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 100 YR-F Rainfall=11.84" Printed 8/29/2025
Page 126
Summary for Link 7L: POA-4
Inflow Area = 6.300 ac, 0.16% Impervious, Inflow Depth = 7.26" for 100 YR-F event Inflow = 24.62 cfs @ 12.31 hrs, Volume = 3.812 af Primary = 24.62 cfs @ 12.31 hrs, Volume = 3.812 af, Atten = 0%, Lag = 0.0 min
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 7L: POA-4
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 100 YR-F Rainfall=11.84" Printed 8/29/2025
R-F Rainfall=11.84" Printed 8/29/2025 Page 127
Summary for Link 8L: POA-3
Inflow Area = 2.740 ac, 7.30% Impervious, Inflow Depth = 6.24" for 100 YR-F event Inflow = 11.08 cfs @ 12.23 hrs, Volume= 1.425 af Primary = 11.08 cfs @ 12.23 hrs, Volume= 1.425 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 8L: POA-3
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
YR-F Rainfall=11.84" Printed 8/29/2025 Page 128
NOAA 24-hr D 100 YR-F Rainfall=11.84" Printed 8/29/2025
Summary for Link 9L: POA-2
Inflow Area = 3.580 ac, 1.12% Impervious, Inflow Depth = 8.14" for 100 YR-F event Inflow = 12.07 cfs @ 12.42 hrs, Volume = 2.427 af Primary = 12.07 cfs @ 12.42 hrs, Volume = 2.427 af, Atten = 0%, Lag = 0.0 min
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 9L: POA-2
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Analysis-Existing Conditions NOAA 24 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
D 100 YR-F Rainfall=11.84" Printed 8/29/2025 Page 129
NOAA 24-hr D 100 YR-F Rainfall=11.84" Printed 8/29/2025
Summary for Link 10L: Reduction
0.33% Impervious, Inflow Depth = 8.20" for 100 YR-F event 12.42 hrs, Volume= 2.056 af 12.42 hrs, Volume= 2.056 af, Atten= 0%, Lag= 0.0 min
Inflow Area = 3.010 ac,
Inflow = 10.91 cfs @
Primary = 10.91 cfs @
Routed to Link 9L : POA-2
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 10L: Reduction
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours)
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 100 YR-F Rainfall=11.84" Printed 8/29/2025
Page 130
Summary for Link 11L: Offsite
Inflow Area = 0.570 ac, 5.26% Impervious, Inflow Depth = 7.82" for 100 YR-F event Inflow = 5.18 cfs @ 12.11 hrs, Volume= 0.372 af Primary = 5.18 cfs @ 12.11 hrs, Volume= 0.372 af, Atten= 0%, Lag= 0.0 min
Routed to Link 9L : POA-2
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 11L: Offsite
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 100 YR-F Rainfall=11.84" Printed 8/29/2025
Page 131
Summary for Link 13L: Reduction
7.17% Impervious, Inflow Depth = 6.23" for 100 YR-F event 12.23 hrs, Volume= 1.376 af 12.23 hrs, Volume= 1.376 af, Atten= 0%, Lag= 0.0 min
Inflow Area = 2.650 ac,
Inflow = 10.73 cfs @
Primary = 10.73 cfs @
Routed to Link 8L : POA-3
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 13L: Reduction
Hydrograph
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours)
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCAD\circledR 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 100 YR-F Rainfall=11.84" Printed 8/29/2025
/R-F Rainfall=11.84" Printed 8/29/2025 Page 132
Summary for Link 15L: Offsite
Inflow Area = 0.090 ac, 11.11% Impervious, Inflow Depth = 6.46" for 100 YR-F event Inflow = 0.36 cfs @ 12.23 hrs, Volume= 0.048 af Primary = 0.36 cfs @ 12.23 hrs, Volume= 0.048 af, Atten= 0%, Lag= 0.0 min
Routed to Link 8L : POA-3
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 15L: Offsite
Hydrograph
Inflow Area(cm)0.36 cfs0.36 cfs
0.000.000.00
0.020.000.02
0.040.000.04
0.060.000.06
0.080.000.08
0.100.000.10
0.120.000.12
0.140.000.14
0.160.000.16
0.180.000.18
0.200.000.20
0.220.000.22
0.240.000.24
0.260.000.26
0.280.000.28
0.300.000.30
0.320.000.32
0.340.000.34
0.360.000.36
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours)
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
00 YR-F Rainfall=11.84" Printed 8/29/2025 Page 133
NOAA 24-hr D 100 YR-F Rainfall=11.84" Printed 8/29/2025
Summary for Link 16L: Reduction
Inflow Area = 6.010 ac, 0.00% Impervious, Inflow Depth = 7.32" for 100 YR-F event Inflow = 23.70 cfs @ 12.31 hrs, Volume = 3.667 af Primary = 23.70 cfs @ 12.31 hrs, Volume = 3.667 af, Atten = 0%, Lag = 0.0 min
Routed to Link 7L : POA-4
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 16L: Reduction
Hydrograph
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours)
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCAD\circledR 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 100 YR-F Rainfall=11.84" Printed 8/29/2025
Page 134
Summary for Link 18L: Offsite
Inflow Area = 0.290 ac, 3.45% Impervious, Inflow Depth = 6.02" for 100 YR-F event Inflow = 0.92 cfs @ 12.31 hrs, Volume = 0.145 af Primary = 0.92 cfs @ 12.31 hrs, Volume = 0.145 af, Atten = 0%, Lag = 0.0 min
Routed to Link 7L : POA-4
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 18L: Offsite
0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours)
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 100 YR-F Rainfall=11.84" Printed 8/29/2025 utions LLC Page 135
Summary for Link 20L: POA-5
Inflow Area = 0.360 ac, 0.00% Impervious, Inflow Depth = 8.18" for 100 YR-F event Inflow = 2.12 cfs @ 12.20 hrs, Volume= 0.246 af Primary = 2.12 cfs @ 12.20 hrs, Volume= 0.246 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 20L: POA-5
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Table of Contents Printed 8/29/2025
TABLE OF CONTENTS
Project Reports
1 Routing Diagram 2 Rainfall Events Listing (selected events) 3 Area Listing (selected nodes)
2 YR-C Event
4 Subcat 1S: DA-E1 5 Subcat 3S: DA-E4 6 Subcat 5S: DA-E3 7 Subcat 6S: DA-E2 9 Subcat 12S: DA-E2A 10 Subcat 14S: DA-E3A 12 Subcat 17S: DA-E4A 14 Subcat 19S: DA-E5 15 Link 6L: POA-1 16 Link 7L: POA-4 17 Link 8L: POA-3 18 Link 9L: POA-2 19 Link 10L: Reduction 20 Link 11L: Offsite 21 Link 13L: Reduction 22 Link 15L: Offsite 23 Link 16L: Reduction 24 Link 18L: Offsite 25 Link 20L: POA-5
2 YR-F Event
26 Subcat 1S: DA-E1
27 Subcat 3S: DA-E4
28 Subcat 5S: DA-E3
29 Subcat 6S: DA-E2
31 Subcat 12S: DA-E2A
32 Subcat 14S: DA-E3A
34 Subcat 17S: DA-E4A
36 Subcat 19S: DA-E5
37 Link 6L: POA-1
38 Link 7L: POA-4
39 Link 8L: POA-3
40 Link 9L: POA-2
41 Link 10L: Reduction
42 Link 11L: Offsite
43 Link 13L: Reduction
44 Link 15L: Offsite
45 Link 16L: Reduction
46 Link 18L: Offsite
47 Link 20L: POA-5
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Table of Contents Printed 8/29/2025
10 YR-C Event
48 Subcat 1S: DA-E1
49 Subcat 3S: DA-E4
50 Subcat 5S: DA-E3
51 Subcat 6S: DA-E2
53 Subcat 12S: DA-E2A
54 Subcat 14S: DA-E3A
56 Subcat 17S: DA-E4A
58 Subcat 19S: DA-E5
59 Link 6L: POA-1
60 Link 7L: POA-4
61 Link 8L: POA-3
62 Link 9L: POA-2
63 Link 10L: Reduction
64 Link 11L: Offsite
65 Link 13L: Reduction
66 Link 15L: Offsite
67 Link 16L: Reduction
68 Link 18L: Offsite
69 Link 20L: POA-5
10 YR-F Event
70 Subcat 1S: DA-E1
71 Subcat 3S: DA-E4
72 Subcat 5S: DA-E3
73 Subcat 6S: DA-E2
75 Subcat 12S: DA-E2A
76 Subcat 14S: DA-E3A
78 Subcat 17S: DA-E4A
80 Subcat 19S: DA-E5
81 Link 6L: POA-1
82 Link 7L: POA-4
83 Link 8L: POA-3
84 Link 9L: POA-2
85 Link 10L: Reduction
86 Link 11L: Offsite
87 Link 13L: Reduction
88 Link 15L: Offsite
89 Link 16L: Reduction
90 Link 18L: Offsite
91 Link 20L: POA-5
100 YR-C Event
92 Subcat 1S: DA-E1
93 Subcat 3S: DA-E4
94 Subcat 5S: DA-E3
95 Subcat 6S: DA-E2
97 Subcat 12S: DA-E2A
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Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Table of Contents Printed 8/29/2025
98 Subcat 14S: DA-E3A
100 Subcat 17S: DA-E4A
102 Subcat 19S: DA-E5
103 Link 6L: POA-1
104 Link 7L: POA-4
105 Link 8L: POA-3
106 Link 9L: POA-2
107 Link 10L: Reduction
108 Link 11L: Offsite
109 Link 13L: Reduction
110 Link 15L: Offsite
111 Link 16L: Reduction
112 Link 18L: Offsite
113 Link 20L: POA-5
100 YR-F Event
114 Subcat 1S: DA-E1
115 Subcat 3S: DA-E4
116 Subcat 5S: DA-E3
117 Subcat 6S: DA-E2
119 Subcat 12S: DA-E2A
120 Subcat 14S: DA-E3A
122 Subcat 17S: DA-E4A
124 Link 6L: POA-1
126 Link 7L: POA-4
127 Link 8L: POA-3
128 Link 9L: POA-2
129 Link 10L: Reduction
130 Link 11L: Offsite
131 Link 13L: Reduction
132 Link 15L: Offsite
133 Link 16L: Reduction
134 Link 18L: Offsite
135 Link 20L: POA-5
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Stormwater Management Report South Hope Chapel Rd. Subdivision Project #23184
Appendix C โ€“ Proposed Conditions Analysis
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Project Notes
Rainfall events imported from "240214_Analysis.hcp"
Printed 12/19/2025 Page 2
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Analysis - Proposed Conditions
Printed 12/19/2025 Page 3
Rainfall Events Listing (selected events)
Event#Event NameStorm TypeCurveModeDuration (hours)B/BDepth (inches)AMC
12 YR-CNOAA 24-hrDDefault24.0013.422
22 YR-FNOAA 24-hrDDefault24.0014.042
310 YR-CNOAA 24-hrDDefault24.0015.382
410 YR-FNOAA 24-hrDDefault24.0016.342
5100 YR-CNOAA 24-hrDDefault24.0019.482
6100 YR-FNOAA 24-hrDDefault24.00111.412
1 2 YR-C NOAA 24-hr D Default 24.00 1 3.42
2 2 YR-F NOAA 24-hr D Default 24.00 1 4.04
3 10 YR-C NOAA 24-hr D Default 24.00 1 5.38
4 10 YR-F NOAA 24-hr D Default 24.00 1 6.34
5 100 YR-C NOAA 24-hr D Default 24.00 1 9.48
6 100 YR-F NOAA 24-hr D Default 24.00 1 11.41
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Area Listing (selected nodes)
Area (sq-ft)CNDescription (subcatchment-numbers)
101,49539>75% Grass cover, Good, HSG A (2S, 3S, 4S)
8,71298Paved parking, HSG A (6S)
25,70098Paved roads w/curbs & sewers, HSG A (7S, 8S)
3,00098Roofs, HSG A (14S)
138,90755TOTAL AREA
Printed 12/19/2025 Page 4
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Soil Listing (selected nodes)
Area (sq-ft)Soil GroupSubcatchment Numbers
138,907HSG A2S, 3S, 4S, 6S, 7S, 8S, 14S
0HSG B
0HSG C
0HSG D
0Other
138,907TOTAL AREA
Printed 12/19/2025 Page 5
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Printed 12/19/2025 Page 6
Ground Covers (selected nodes)
HSG-A (sq-ft)HSG-B (sq-ft)HSG-C (sq-ft)HSG-D (sq-ft)Other (sq-ft)Total (sq-ft)Ground Cover
101,4950000101,495>75% Grass cover, Good
8,71200008,712Paved parking
25,700000025,700Paved roads w/curbs & sewers
3,00000003,000Roofs
138,9070000138,907TOTAL AREA
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Printed 12/19/2025 Page 7
Pipe Listing (selected nodes)
Line#Node NumberIn-Invert (feet)Out-Invert (feet)Length (feet)Slope (ft/ft)nWidth (inches)Diam/Height (inches)Inside-Fill (inches)Node Name
12P88.0086.00119.00.01680.0120.012.00.0
25P87.4887.0028.00.01710.0120.012.00.0
36P91.8091.6530.00.00500.0120.012.00.0
48P92.7592.657.00.01430.0120.012.00.0
510P92.0891.6538.00.01130.0110.012.00.0
615P92.0090.7552.00.02400.0110.012.00.0
733P93.6593.5017.00.00880.0120.012.00.0
842P90.8090.7511.00.00450.0120.012.00.0
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Analysis - Proposed Conditions NOAA 24-hr D 2 YR-C Rainfall=3.42" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 8
Time span=0.00-72.00 hrs, dt=0.01 hrs, 7201 points
Time span=0.00-7.2.00 hrs, dt=0.01 hrs, 7.201 points
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious
Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method
Subcatchment2S: DA-P1 PERVOUSRunoff Area=1.220 ac 0.00% Impervious Runoff Depth=0.01" Flow Length=525' Tc=14.2 min CN=39/0 Runoff=0.00 cfs 24 cf
Subcatchment3S: DA-P3 PERVOUSRunoff Area=0.680 ac 0.00% Impervious Runoff Depth=0.01" Flow Length=363' Tc=11.5 min CN=39/0 Runoff=0.00 cfs 13 cf
Subcatchment4S: DA-P2 PERVOUSRunoff Area=0.430 ac 0.00% Impervious Runoff Depth=0.01" Flow Length=168' Slope=0.0300 /' Tc=8.7 min CN=39/0 Runoff=0.00 cfs 8 cf
Subcatchment6S: DA-P3 IMPERVOUSRunoff Area=0.200 ac 100.00% Impervious Runoff Depth=3.19" Flow Length=155' Tc=4.3 min CN=0/98 Runoff=0.59 cfs 2,314 cf
Subcatchment7S: DA-P2 IMPERVOUSRunoff Area=0.190 ac 100.00% Impervious Runoff Depth=3.19" Flow Length=172' Tc=4.3 min CN=0/98 Runoff=0.56 cfs 2,198 cf
Subcatchment8S: DA-P1 IMPERVOUSRunoff Area=0.400 ac 100.00% Impervious Runoff Depth=3.19" Flow Length=372' Slope=0.0200 /' Tc=2.5 min CN=0/98 Runoff=1.33 cfs 4,627 cf
Subcatchment14S: LOT 11 RoofRunoff Area=3,000 sf 100.00% Impervious Runoff Depth=3.19" Flow Length=40' Tc=0.3 min CN=0/98 Runoff=0.25 cfs 797 cf
Pond 2P: Subsurface Infiltration Basin 1Peak Elev=87.01' Storage=6 cf Inflow=0.34 cfs 3,941 cf Discarded=0.34 cfs 3,941 cf Primary=0.00 cfs 0 cf Outflow=0.34 cfs 3,941 cf
Pond 5P: BIORETENTION BASIN 1APeak Elev=91.88' Storage=2,824 cf Inflow=1.33 cfs 4,651 cf Outflow=0.14 cfs 3,145 cf
Pond 6P: BIORETENTION BASIN 2APeak Elev=94.42' Storage=8 cf Inflow=0.00 cfs 8 cf Outflow=0.00 cfs 0 cf
Pond 8P: INFILTRATION BASIN 3Peak Elev=90.76' Storage=6 cf Inflow=0.15 cfs 2,310 cf Discarded=0.15 cfs 2,310 cf Primary=0.00 cfs 0 cf Outflow=0.15 cfs 2,310 cf
Pond 10P: PERVOUS PAVEMENT 2BPeak Elev=94.59' Storage=748 cf Inflow=0.56 cfs 2,198 cf Outflow=0.14 cfs 2,194 cf
Pond 15P: PERVOUS PAVEMENT 3BPeak Elev=94.71' Storage=773 cf Inflow=0.59 cfs 2,314 cf Outflow=0.15 cfs 2,310 cf
Pond 33P: INFILTRATION BASIN 2Peak Elev=92.12' Storage=286 cf Inflow=0.14 cfs 2,194 cf Discarded=0.08 cfs 2,194 cf Primary=0.00 cfs 0 cf Outflow=0.08 cfs 2,194 cf
Pond 42P: BIORETENTION BASIN 3APeak Elev=93.42' Storage=13 cf Inflow=0.00 cfs 13 cf Outflow=0.00 cfs 0 cf
Link 32L: POA1Inflow=0.00 cfs 0 cf Primary=0.00 cfs 0 cf
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025 Page 9
Link 33L: POA2 Link 34L: POA3 Total Runoff Area = 138,907 sf Runoff Volume = 9,980 cf Average Runoff Depth = 0.86" 73.07% Pervious = 101,495 sf 26.93% Impervious = 37,412 sf
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025 Page 10
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 2S: DA-P1 PERVIOUS
Runoff = 0.00 cfs @ 24.01 hrs, Volume= Routed to Pond 5P : BIORETENTION BASIN 1A 24 cf, Depth= 0.01"
24 cf. Depth= 0.01"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-C Rainfall=3.42"
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 2S: DA-P1 PERVIOUS
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.080.000.000.00
4.000.180.000.000.00
6.000.290.000.000.00
8.000.440.000.000.00
10.000.680.000.000.00
12.001.640.000.000.00
14.002.740.000.000.00
16.002.980.000.000.00
18.003.130.000.000.00
20.003.240.000.000.00
22.003.340.000.000.00
24.003.420.010.000.00
26.003.420.010.000.00
28.003.420.010.000.00
30.003.420.010.000.00
32.003.420.010.000.00
34.003.420.010.000.00
36.003.420.010.000.00
38.003.420.010.000.00
40.003.420.010.000.00
42.003.420.010.000.00
44.003.420.010.000.00
46.003.420.010.000.00
48.003.420.010.000.00
50.003.420.010.000.00
52.003.420.010.000.00
54.003.420.010.000.00
56.003.420.010.000.00
58.003.420.010.000.00
60.003.420.010.000.00
62.003.420.010.000.00
64.003.420.010.000.00
66.003.420.010.000.00
68.003.420.010.000.00
70.003.420.010.000.00
72.003.420.010.000.00
Page 11
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025 as LLC Page 12
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 3S: DA-P3 PERVIOUS
Runoff = 0.00 cfs @ 24.02 hrs, Volume= Routed to Pond 42P : BIORENTION BASIN 3A
13 cf, Depth= 0.01"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-C Rainfall=3.42"
Area (ac) CN Description
0.680 39 >75% Grass cover, Good, HSG A
0.680 39 100.00% Pervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
9.0 83 0.0400 0.15 Sheet Flow, Grass: Dense n= 0.240 P2= 3.42" Using McCuen-Spiess flow length
0.2 10 0.0240 1.08 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps
2.2 270 2.00 Direct Entry, Pioe Flow
11.5 363 Total
Subcatchment 3S: DA-P3 PERVIOUS
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 3S: DA-P3 PERVIOUS
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.080.000.000.00
4.000.180.000.000.00
6.000.290.000.000.00
8.000.440.000.000.00
10.000.680.000.000.00
12.001.640.000.000.00
14.002.740.000.000.00
16.002.980.000.000.00
18.003.130.000.000.00
20.003.240.000.000.00
22.003.340.000.000.00
24.003.420.010.000.00
26.003.420.010.000.00
28.003.420.010.000.00
30.003.420.010.000.00
32.003.420.010.000.00
34.003.420.010.000.00
36.003.420.010.000.00
38.003.420.010.000.00
40.003.420.010.000.00
42.003.420.010.000.00
44.003.420.010.000.00
46.003.420.010.000.00
48.003.420.010.000.00
50.003.420.010.000.00
52.003.420.010.000.00
54.003.420.010.000.00
56.003.420.010.000.00
58.003.420.010.000.00
60.003.420.010.000.00
62.003.420.010.000.00
64.003.420.010.000.00
66.003.420.010.000.00
68.003.420.010.000.00
70.003.420.010.000.00
72.003.420.010.000.00
Page 13
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025 as LLC Page 14
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 4S: DA-P2 PERVIOUS
Runoff = 0.00 cfs @ 24.01 hrs, Volume= Routed to Pond 6P : BIORENTION BASIN 2A
8 cf, Depth = 0.01"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-C Rainfall=3.42"
Area (ac) CN Description
0.430 39 >75% Grass cover, Good, HSG A
0.430 39 100.00% Pervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
7.8 60 0.0300 0.13 Sheet Flow, Grass: Dense n= 0.240 P2= 3.42"
0.9 108 2.00 Direct Entry, Pipe Flow
8.7 168 Total
Subcatchment 4S: DA-P2 PERVIOUS
Subcatchment 4S: DA-P2 PERVIOUS
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 4S: DA-P2 PERVIOUS
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.080.000.000.00
4.000.180.000.000.00
6.000.290.000.000.00
8.000.440.000.000.00
10.000.680.000.000.00
12.001.640.000.000.00
14.002.740.000.000.00
16.002.980.000.000.00
18.003.130.000.000.00
20.003.240.000.000.00
22.003.340.000.000.00
24.003.420.010.000.00
26.003.420.010.000.00
28.003.420.010.000.00
30.003.420.010.000.00
32.003.420.010.000.00
34.003.420.010.000.00
36.003.420.010.000.00
38.003.420.010.000.00
40.003.420.010.000.00
42.003.420.010.000.00
44.003.420.010.000.00
46.003.420.010.000.00
48.003.420.010.000.00
50.003.420.010.000.00
52.003.420.010.000.00
54.003.420.010.000.00
56.003.420.010.000.00
58.003.420.010.000.00
60.003.420.010.000.00
62.003.420.010.000.00
64.003.420.010.000.00
66.003.420.010.000.00
68.003.420.010.000.00
70.003.420.010.000.00
72.003.420.010.000.00
Page 15
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025 Page 16
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 6S: DA-P3 IMPERVIOUS
Runoff = 0.59 cfs @ 12.12 hrs, Volume= Routed to Pond 15P : PERVIOUS PAVEMENT 3B 2,314 cf, Depth= 3.19"
2,314 cf, Depth= 3.19"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-C Rainfall=3.42"
Area (ac) CN Description
0.200 98 Paved parking, HSG A
0.200 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
3.6 37 0.0300 0.17 Sheet Flow, Grass: Short n= 0.150 P2= 3.42" Shallow Concentrated Flow, Paved Kv= 20.3 fps
0.7 118 0.0200 2.87
4.3 155 Total
Subcatchment 6S: DA-P3 IMPERVIOUS
Subcatchment 6S: DA-P3 IMPERVIOUS
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 6S: DA-P3 IMPERVIOUS
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.080.000.010.00
4.000.180.000.060.01
6.000.290.000.140.01
8.000.440.000.270.02
10.000.680.000.480.03
12.001.640.001.420.34
14.002.740.002.510.03
16.002.980.002.740.02
18.003.130.002.900.01
20.003.240.003.010.01
22.003.340.003.100.01
24.003.420.003.190.01
26.003.420.003.190.00
28.003.420.003.190.00
30.003.420.003.190.00
32.003.420.003.190.00
34.003.420.003.190.00
36.003.420.003.190.00
38.003.420.003.190.00
40.003.420.003.190.00
42.003.420.003.190.00
44.003.420.003.190.00
46.003.420.003.190.00
48.003.420.003.190.00
50.003.420.003.190.00
52.003.420.003.190.00
54.003.420.003.190.00
56.003.420.003.190.00
58.003.420.003.190.00
60.003.420.003.190.00
62.003.420.003.190.00
64.003.420.003.190.00
66.003.420.003.190.00
68.003.420.003.190.00
70.003.420.003.190.00
72.003.420.003.190.00
Page 17
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025 as LLC Page 18
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 7S: DA-P2 IMPERVIOUS
Runoff = 0.56 cfs @ 12.12 hrs, Volume= Routed to Pond 10P : PERVIOUS PAVEMENT 2B 2,198 cf, Depth= 3.19"
2,198 cf, Depth= 3.19"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-C Rainfall=3.42"
Area (ac) CN Description
0.190 98 Paved roads w/curbs & sewers, HSG A
0.190 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
3.5 35 0.0300 0.17 Sheet Flow, Grass: Short n= 0.150 P2= 3.42"
0.8 137 0.0200 2.87 Shallow Concentrated Flow, Paved Kv= 20.3 fps
4.3 172 Total
Subcatchment 7S: DA-P2 IMPERVIOUS
Subcatchment 7S: DA-P2 IMPERVIOUS
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 7S: DA-P2 IMPERVIOUS
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.080.000.010.00
4.000.180.000.060.01
6.000.290.000.140.01
8.000.440.000.270.02
10.000.680.000.480.03
12.001.640.001.420.32
14.002.740.002.510.03
16.002.980.002.740.02
18.003.130.002.900.01
20.003.240.003.010.01
22.003.340.003.100.01
24.003.420.003.190.01
26.003.420.003.190.00
28.003.420.003.190.00
30.003.420.003.190.00
32.003.420.003.190.00
34.003.420.003.190.00
36.003.420.003.190.00
38.003.420.003.190.00
40.003.420.003.190.00
42.003.420.003.190.00
44.003.420.003.190.00
46.003.420.003.190.00
48.003.420.003.190.00
50.003.420.003.190.00
52.003.420.003.190.00
54.003.420.003.190.00
56.003.420.003.190.00
58.003.420.003.190.00
60.003.420.003.190.00
62.003.420.003.190.00
64.003.420.003.190.00
66.003.420.003.190.00
68.003.420.003.190.00
70.003.420.003.190.00
72.003.420.003.190.00
Page 19
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025 Page 20
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 8S: DA-P1 IMPERVIOUS
Runoff = 1.33 cfs @ 12.11 hrs, Volume= Routed to Pond 5P : BIORETENTION BASIN 1A
4,627 cf, Depth= 3.19"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-C Rainfall=3.42"
Area (ac) CN Description
0.400 98 Paved roads w/curbs & sewers, HSG A
0.400 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)
1.4 235 0.0200 2.87 Shallow Concentrated Flow, Paved Kv= 20.3 fps
1.1 137 2.00 Direct Entry, Pipe Flow
2.5 372 Total
Subcatchment 8S: DA-P1_IMPERVIOUS Pipe Flow
Subcatchment 8S: DA-P1 IMPERVIOUS
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours)
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 8S: DA-P1 IMPERVIOUS
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.080.000.010.01
4.000.180.000.060.01
6.000.290.000.140.02
8.000.440.000.270.03
10.000.680.000.480.06
12.001.640.001.420.78
14.002.740.002.510.07
16.002.980.002.740.04
18.003.130.002.900.02
20.003.240.003.010.02
22.003.340.003.100.02
24.003.420.003.190.02
26.003.420.003.190.00
28.003.420.003.190.00
30.003.420.003.190.00
32.003.420.003.190.00
34.003.420.003.190.00
36.003.420.003.190.00
38.003.420.003.190.00
40.003.420.003.190.00
42.003.420.003.190.00
44.003.420.003.190.00
46.003.420.003.190.00
48.003.420.003.190.00
50.003.420.003.190.00
52.003.420.003.190.00
54.003.420.003.190.00
56.003.420.003.190.00
58.003.420.003.190.00
60.003.420.003.190.00
62.003.420.003.190.00
64.003.420.003.190.00
66.003.420.003.190.00
68.003.420.003.190.00
70.003.420.003.190.00
72.003.420.003.190.00
Page 21
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025
YR-C Rainfall=3.42" Printed 12/19/2025 Page 22
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 14S: LOT 11 Roof
Runoff = 0.25 cfs @ 12.09 hrs, Volume= Routed to Pond 2P : Subsurface Infiltration Basin 1 797 cf, Depth= 3.19"
797 cf, Depth= 3.19"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-C Rainfall=3.42"
Area (sf) CN Description
3,000 98 Roofs, HSG A
3,000 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)
0.3 40 2.00 Direct Entry, Pipe Flow
Subcatchment 14S: LOT 11 Roof
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Hydrograph for Subcatchment 14S: LOT 11 Roof
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.080.000.010.00
4.000.180.000.060.00
6.000.290.000.140.00
8.000.440.000.270.01
10.000.680.000.480.01
12.001.640.001.420.15
14.002.740.002.510.01
16.002.980.002.740.01
18.003.130.002.900.00
20.003.240.003.010.00
22.003.340.003.100.00
24.003.420.003.190.00
26.003.420.003.190.00
28.003.420.003.190.00
30.003.420.003.190.00
32.003.420.003.190.00
34.003.420.003.190.00
36.003.420.003.190.00
38.003.420.003.190.00
40.003.420.003.190.00
42.003.420.003.190.00
44.003.420.003.190.00
46.003.420.003.190.00
48.003.420.003.190.00
50.003.420.003.190.00
52.003.420.003.190.00
54.003.420.003.190.00
56.003.420.003.190.00
58.003.420.003.190.00
60.003.420.003.190.00
62.003.420.003.190.00
64.003.420.003.190.00
66.003.420.003.190.00
68.003.420.003.190.00
70.003.420.003.190.00
72.003.420.003.190.00
Page 23
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Summary for Pond 2P: Subsurface Infiltration Basin 1
Inflow Area = 73,567 sf, 27.76% Impervious, Inflow Depth > 0.64" for 2 YR-C event
Inflow = 0.34 cfs @ 12.09 hrs, Volume= 3,941 cf
Outflow = 0.34 cfs @ 12.09 hrs, Volume= 3,941 cf, Atten= 1%, Lag= 0.2 min
Discarded = 0.34 cfs @ 12.09 hrs, Volume= 3,941 cf
Primary = 0.00 cfs @ 0.00 hrs, Volume= 0 cf
Routed to Link 32L : POA1
Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs
Peak Elev= 87.01' @ 12.09 hrs Surf.Area= 2,475 sf Storage= 6 cf
Plug-Flow detention time= 0.3 min calculated for 3,941 cf (100% of inflow)
Center-of-Mass det. time= 0.3 min ( 939.9 - 939.6 )
VolumeInvertAvail.StorageStorage Description
#1A87.00'4,349 cf27.50'W x 90.00'L x 6.00'H Field A
#2A87.50'3,188 cf14,850 cf Overall - 3,979 cf Embedded = 10,871 cf x 40.0% Voids ADS N-12 36" x 20 Inside #1 Inside= 36.1"W x 36.1"H => 7.10 sf x 20.00'L = 142.0 cf Outside= 42.0"W x 42.0"H => 8.86 sf x 20.00'L = 177.2 cf 20 Chambers in 5 Rows 24.50' Header x 7.10 sf x 2 = 347.9 cf Inside
7,536 cf Total Available Storage
Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Primary92.59'48.0" x 48.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads
#2Device 188.00'12.0" Round Culvert L= 119.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 88.00' / 86.00' S= 0.0168 /' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 0.79 sf
#3Discarded87.00'10.000 in/hr Exfiltration over Surface area Phase-In= 0.01'
Discarded OutFlow Max=0.34 cfs @ 12.09 hrs HW=87.01' (Free Discharge)
3=Exfiltration (Exfiltration Controls 0.34 cfs)
Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=87.00' TW=0.00' (Dynamic Tailwater)
1=Grate ( Controls 0.00 cfs)
2=Culvert ( Controls 0.00 cfs)
Pond 2P: Subsurface Infiltration Basin 1
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Pond 2P: Subsurface Infiltration Basin 1 - Chamber Wizard Field A
Chamber Model = ADS N-12 36" (ADS N-12ยฎ Pipe) Inside= 36.1"W x 36.1"H => 7.10 sf x 20.00'L = 142.0 cf Outside= 42.0"W x 42.0"H => 8.86 sf x 20.00'L = 177.2 cf 42.0" Wide + 21.0" Spacing = 63.0" C-C Row Spacing 4 Chambers/Row x 20.00' Long +3.50' Header x 2 = 87.00' Row Length +18.0" End Stone x 2 = 90.00' Base Length 5 Rows x 42.0" Wide + 21.0" Spacing x 4 + 18.0" Side Stone x 2 = 27.50' Base Width 6.0" Stone Base + 42.0" Chamber Height + 24.0" Stone Cover = 6.00' Field Height 20 Chambers x 142.0 cf + 24.50' Header x 7.10 sf x 2 = 3,187.9 cf Chamber Storage 20 Chambers x 177.2 cf + 24.50' Header x 8.86 sf x 2 = 3,978.6 cf Displacement 14,850.0 cf Field - 3,978.6 cf Chambers = 10,871.4 cf Stone x 40.0% Voids = 4,348.5 cf Stone Storage Chamber Storage + Stone Storage = 7,536.4 cf = 0.173 af Overall Storage Efficiency = 50.8% Overall System Size = 90.00' x 27.50' x 6.00' 20 Chambers 550.0 cy Field 402.6 cy Stone
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Pond 2P: Subsurface Infiltration Basin 1
Pond 2P: Subsurface Infiltration Basin 1
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Page 27
Pond 2P: Subsurface Infiltration Basin 1
Stage-Area-Storage
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Hydrograph for Pond 2P: Subsurface Infiltration Basin 1
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Outflow (cfs)Discarded (cfs)Primary (cfs)
0.000.00087.000.000.000.00
2.000.00087.000.000.000.00
4.000.00087.000.000.000.00
6.000.00087.000.000.000.00
8.000.01087.000.010.010.00
10.000.01087.000.010.010.00
12.000.21487.000.210.210.00
14.000.14287.000.140.140.00
16.000.10287.000.100.100.00
18.000.06187.000.060.060.00
20.000.03187.000.030.030.00
22.000.03087.000.030.030.00
24.000.02087.000.020.020.00
26.000.01087.000.010.010.00
28.000.00087.000.000.000.00
30.000.00087.000.000.000.00
32.000.00087.000.000.000.00
34.000.00087.000.000.000.00
36.000.00087.000.000.000.00
38.000.00087.000.000.000.00
40.000.00087.000.000.000.00
42.000.00087.000.000.000.00
44.000.00087.000.000.000.00
46.000.00087.000.000.000.00
48.000.00087.000.000.000.00
50.000.00087.000.000.000.00
52.000.00087.000.000.000.00
54.000.00087.000.000.000.00
56.000.00087.000.000.000.00
58.000.00087.000.000.000.00
60.000.00087.000.000.000.00
62.000.00087.000.000.000.00
64.000.00087.000.000.000.00
66.000.00087.000.000.000.00
68.000.00087.000.000.000.00
70.000.00087.000.000.000.00
72.000.00087.000.000.000.00
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Page 29
Stage-Discharge for Pond 2P: Subsurface Infiltration Basin 1
Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)
87.000.000.000.00
87.100.570.570.00
87.200.570.570.00
87.300.570.570.00
87.400.570.570.00
87.500.570.570.00
87.600.570.570.00
87.700.570.570.00
87.800.570.570.00
87.900.570.570.00
88.000.570.570.00
88.100.570.570.00
88.200.570.570.00
88.300.570.570.00
88.400.570.570.00
88.500.570.570.00
88.600.570.570.00
88.700.570.570.00
88.800.570.570.00
88.900.570.570.00
89.000.570.570.00
89.100.570.570.00
89.200.570.570.00
89.300.570.570.00
89.400.570.570.00
89.500.570.570.00
89.600.570.570.00
89.700.570.570.00
89.800.570.570.00
89.900.570.570.00
90.000.570.570.00
90.100.570.570.00
90.200.570.570.00
90.300.570.570.00
90.400.570.570.00
90.500.570.570.00
90.600.570.570.00
90.700.570.570.00
90.800.570.570.00
90.900.570.570.00
91.000.570.570.00
91.100.570.570.00
91.200.570.570.00
91.300.570.570.00
91.400.570.570.00
91.500.570.570.00
91.600.570.570.00
91.700.570.570.00
91.800.570.570.00
91.900.570.570.00
92.000.570.570.00
92.100.570.570.00
Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)
92.200.570.570.00
92.300.570.570.00
92.400.570.570.00
92.500.570.570.00
92.600.630.570.05
92.701.540.570.97
92.801.910.571.33
92.902.190.571.62
93.002.440.571.86
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Page 30
Stage-Area-Storage for Pond 2P: Subsurface Infiltration Basin 1
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
87.002,4750
87.102,47599
87.202,475198
87.302,475297
87.402,475396
87.502,475495
87.602,475581
87.702,475657
87.802,475739
87.902,475852
88.002,475980
88.102,4751,118
88.202,4751,264
88.302,4751,416
88.402,4751,573
88.502,4751,735
88.602,4751,900
88.702,4752,069
88.802,4752,240
88.902,4752,412
89.002,4752,587
89.102,4752,762
89.202,4752,938
89.302,4753,114
89.402,4753,290
89.502,4753,465
89.602,4753,639
89.702,4753,812
89.802,4753,983
89.902,4754,151
90.002,4754,316
90.102,4754,478
90.202,4754,636
90.302,4754,788
90.402,4754,934
90.502,4755,072
90.602,4755,200
90.702,4755,313
90.802,4755,395
90.902,4755,470
91.002,4755,556
91.102,4755,655
91.202,4755,754
91.302,4755,853
91.402,4755,952
91.502,4756,051
91.602,4756,150
91.702,4756,249
91.802,4756,348
91.902,4756,447
92.002,4756,546
92.102,4756,645
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
92.202,4756,744
92.302,4756,843
92.402,4756,942
92.502,4757,041
92.602,4757,140
92.702,4757,239
92.802,4757,338
92.902,4757,437
93.002,4757,536
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Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 5P: BIORETENTION BASIN 1A
Inflow Area = 70,567 sf, 24.69% Impervious, Inflow Depth = 0.79" for 2 YR-C event Inflow = 1.33 cfs @ 12.11 hrs, Volume = 4,651 cf Outflow = 0.14 cfs @ 12.90 hrs, Volume = 3,145 cf, Atten = 89%, Lag = 47.9 min Primary = 0.14 cfs @ 12.90 hrs, Volume = 3,145 cf Routed to Pond 2P : Subsurface Infiltration Basin 1
Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 91.88' @ 12.90 hrs Surf.Area= 1,500 sf Storage= 2,824 cf Plug-Flow detention time= 338.4 min calculated for 3,144 cf (68% of inflow) Center-of-Mass det. time= 229.2 min ( 987.2 - 758.0 )
#1 90.00' 8,250 cf Custom Stage Data (Prismatic) Listed below (Recalc)
Elevation (feet) Surf. Area (sq-ft) Inc. Store (cubic-feet) Cum. Store (cubic-feet)
90.00 1,500 0 0
95.50 1,500 8,250 8,250
Device Routing Invert Outlet Devices
#1 Device 3 91.00' 2.5" Vert. Orifice C = 0.600 Limited to weir flow at low heads
#2 Device 3 95.00' 48.0" x 48.0" Horiz. Grate C = 0.600 Limited to weir flow at low heads
#3 Primary 87.48' 12.0" Round Culvert\n L = 28.0' RCP, groove end projecting, Ke = 0.200\nInlet / Outlet Invert= 87.48' / 87.00' S = 0.0171 /'' Cc = 0.900\n n = 0.012 Concrete pipe, finished, Flow Area= 0.79 sf
Primary OutFlow Max=0.14 cfs @ 12.90 hrs HW=91.88' TW=87.00' (Dynamic Tailwater) 3=Culvert (Passes 0.14 cfs of 8.90 cfs potential flow) 1=Orifice (Orifice Controls 0.14 cfs @ 4.25 fps) 2=Grate ( Controls 0.00 cfs)
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Pond 5P: BIORETENTION BASIN 1A
Pond 5P: BIORETENTION BASIN 1A
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Pond 5P: BIORETENTION BASIN 1A
Stage-Area-Storage
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Hydrograph for Pond 5P: BIORETENTION BASIN 1A
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Primary (cfs)
0.000.00090.000.00
2.000.01990.010.00
4.000.017890.050.00
6.000.0219790.130.00
8.000.0338190.250.00
10.000.0668790.460.00
12.000.781,85591.240.06
14.000.072,63791.760.13
16.000.042,15891.440.09
18.000.021,83691.220.06
20.000.021,70591.140.03
22.000.021,67291.110.02
24.000.021,65691.100.02
26.000.001,58391.060.01
28.000.001,55591.040.00
30.000.001,54191.030.00
32.000.001,53291.020.00
34.000.001,52791.020.00
36.000.001,52391.020.00
38.000.001,52091.010.00
40.000.001,51891.010.00
42.000.001,51691.010.00
44.000.001,51491.010.00
46.000.001,51391.010.00
48.000.001,51291.010.00
50.000.001,51191.010.00
52.000.001,51091.010.00
54.000.001,51091.010.00
56.000.001,50991.010.00
58.000.001,50991.010.00
60.000.001,50891.010.00
62.000.001,50891.010.00
64.000.001,50791.000.00
66.000.001,50791.000.00
68.000.001,50791.000.00
70.000.001,50691.000.00
72.000.001,50691.000.00
Page 34
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Page 35
Stage-Discharge for Pond 5P: BIORETENTION BASIN 1A
Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)
90.000.0092.600.20
90.050.0092.650.20
90.100.0092.700.21
90.150.0092.750.21
90.200.0092.800.21
90.250.0092.850.22
90.300.0092.900.22
90.350.0092.950.22
90.400.0093.000.23
90.450.0093.050.23
90.500.0093.100.23
90.550.0093.150.23
90.600.0093.200.24
90.650.0093.250.24
90.700.0093.300.24
90.750.0093.350.25
90.800.0093.400.25
90.850.0093.450.25
90.900.0093.500.25
90.950.0093.550.26
91.000.0093.600.26
91.050.0093.650.26
91.100.0293.700.26
91.150.0393.750.27
91.200.0593.800.27
91.250.0693.850.27
91.300.0793.900.27
91.350.0893.950.28
91.400.0994.000.28
91.450.1094.050.28
91.500.1094.100.28
91.550.1194.150.29
91.600.1294.200.29
91.650.1294.250.29
91.700.1394.300.29
91.750.1394.350.30
91.800.1494.400.30
91.850.1494.450.30
91.900.1594.500.30
91.950.1594.550.30
92.000.1694.600.31
92.050.1694.650.31
92.100.1694.700.31
92.150.1794.750.31
92.200.1794.800.32
92.250.1894.850.32
92.300.1894.900.32
92.350.1894.950.32
92.400.1995.000.32
92.450.1995.050.91
92.500.1995.101.98
92.550.2095.153.37
Elevation (feet)Primary (cfs)
95.205.01
95.256.87
95.308.93
95.3511.17
95.4012.28
95.4512.32
95.5012.36
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2 YR-C Rainfall=3.42" Printed 12/19/2025 Page 36
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Stage-Area-Storage for Pond 5P: BIORETENTION BASIN 1A
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
90.001,5000
90.101,500150
90.201,500300
90.301,500450
90.401,500600
90.501,500750
90.601,500900
90.701,5001,050
90.801,5001,200
90.901,5001,350
91.001,5001,500
91.101,5001,650
91.201,5001,800
91.301,5001,950
91.401,5002,100
91.501,5002,250
91.601,5002,400
91.701,5002,550
91.801,5002,700
91.901,5002,850
92.001,5003,000
92.101,5003,150
92.201,5003,300
92.301,5003,450
92.401,5003,600
92.501,5003,750
92.601,5003,900
92.701,5004,050
92.801,5004,200
92.901,5004,350
93.001,5004,500
93.101,5004,650
93.201,5004,800
93.301,5004,950
93.401,5005,100
93.501,5005,250
93.601,5005,400
93.701,5005,550
93.801,5005,700
93.901,5005,850
94.001,5006,000
94.101,5006,150
94.201,5006,300
94.301,5006,450
94.401,5006,600
94.501,5006,750
94.601,5006,900
94.701,5007,050
94.801,5007,200
94.901,5007,350
95.001,5007,500
95.101,5007,650
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
95.201,5007,800
95.301,5007,950
95.401,5008,100
95.501,5008,250
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Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 6P: BIORENTION BASIN 2A
Inflow Area = 18,731 sf, 0.00% Impervious, Inflow Depth = 0.01" for 2 YR-C event Inflow = 0.00 cfs @ 24.01 hrs, Volume= 8 cf Outflow = 0.00 cfs @ 0.00 hrs, Volume= 0 cf, Atten= 100%, Lag= 0.0 min Primary = 0.00 cfs @ 0.00 hrs, Volume= 0 cf Routed to Pond 33P : INFILTRATION BASIN 2 Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 94.42' @ 24.97 hrs Surf.Area= 77 sf Storage= 8 cf Plug-Flow detention time=(not calculated: initial storage exceeds outflow) Center-of-Mass det. time=(not calculated: no outflow)
#1 94.30' 307 cf Custom Stage Data (Prismatic)Listed below (Recalc) Elevation (feet) Surf.Area (sq-ft) Inc.Store (cubic-feet) Cum.Store (cubic-feet) 94.30 63 0 0 95.00 148 74 74 96.00 319 234 307 Device Routing Invert Outlet Devices #1 Device 3 94.80' 2.5" Vert. Orifice C=0.600 Limited to weir flow at low heads #2 Device 3 95.50' 48.0" x 48.0" Horiz. Grate C=0.600 #3 Primary 91.80' 12.0" Round Culvert L=30.0' RCP, groove end projecting, Ke=0.200 Inlet / Outlet Invert=91.80'/91.65' S=0.0050'/' Cc=0.900 n=0.012 Concrete pipe, finished, Flow Area=0.79 sf Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=94.30' TW=91.65' (Dynamic Tailwater) 3=Culvert (Passes 0.00 cfs of 5.72 cfs potential flow) 1=Orifice (Controls 0.00 cfs) 2=Grate (Controls 0.00 cfs) Pond 6P: BIORENTION BASIN 2A
Culvert
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Pond 6P: BIORENTION BASIN 2A
Pond 6P: BIORENTION BASIN 2A
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Pond 6P: BIORENTION BASIN 2A
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Hydrograph for Pond 6P: BIORENTION BASIN 2A
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Primary (cfs)
0.000.00094.300.00
2.000.00094.300.00
4.000.00094.300.00
6.000.00094.300.00
8.000.00094.300.00
10.000.00094.300.00
12.000.00094.300.00
14.000.00094.300.00
16.000.00094.300.00
18.000.00094.300.00
20.000.00194.320.00
22.000.00494.360.00
24.000.00894.410.00
26.000.00894.420.00
28.000.00894.420.00
30.000.00894.420.00
32.000.00894.420.00
34.000.00894.420.00
36.000.00894.420.00
38.000.00894.420.00
40.000.00894.420.00
42.000.00894.420.00
44.000.00894.420.00
46.000.00894.420.00
48.000.00894.420.00
50.000.00894.420.00
52.000.00894.420.00
54.000.00894.420.00
56.000.00894.420.00
58.000.00894.420.00
60.000.00894.420.00
62.000.00894.420.00
64.000.00894.420.00
66.000.00894.420.00
68.000.00894.420.00
70.000.00894.420.00
72.000.00894.420.00
Page 40
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Page 41
Stage-Discharge for Pond 6P: BIORENTION BASIN 2A
Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)
94.300.0094.820.0095.340.11
94.310.0094.830.0095.350.11
94.320.0094.840.0095.360.11
94.330.0094.850.0095.370.11
94.340.0094.860.0195.380.11
94.350.0094.870.0195.390.11
94.360.0094.880.0195.400.12
94.370.0094.890.0195.410.12
94.380.0094.900.0295.420.12
94.390.0094.910.0295.430.12
94.400.0094.920.0295.440.12
94.410.0094.930.0395.450.12
94.420.0094.940.0395.460.12
94.430.0094.950.0395.470.12
94.440.0094.960.0495.480.12
94.450.0094.970.0495.490.13
94.460.0094.980.0595.500.13
94.470.0094.990.0595.510.18
94.480.0095.000.0595.520.28
94.490.0095.010.0595.530.40
94.500.0095.020.0695.540.55
94.510.0095.030.0695.550.72
94.520.0095.040.0695.560.90
94.530.0095.050.0695.571.10
94.540.0095.060.0695.581.32
94.550.0095.070.0795.591.55
94.560.0095.080.0795.601.79
94.570.0095.090.0795.612.05
94.580.0095.100.0795.622.31
94.590.0095.110.0795.632.59
94.600.0095.120.0895.642.88
94.610.0095.130.0895.653.18
94.620.0095.140.0895.663.49
94.630.0095.150.0895.673.81
94.640.0095.160.0895.684.14
94.650.0095.170.0895.694.48
94.660.0095.180.0995.704.83
94.670.0095.190.0995.715.18
94.680.0095.200.0995.725.55
94.690.0095.210.0995.735.92
94.700.0095.220.0995.746.30
94.710.0095.230.0995.756.69
94.720.0095.240.1095.767.09
94.730.0095.250.1095.777.49
94.740.0095.260.1095.787.88
94.750.0095.270.1095.797.89
94.760.0095.280.1095.807.90
94.770.0095.290.1095.817.92
94.780.0095.300.1095.827.93
94.790.0095.310.1095.837.94
94.800.0095.320.1195.847.95
94.810.0095.330.1195.857.97
Elevation (feet)Primary (cfs)
95.867.98
95.877.99
95.888.00
95.898.02
95.908.03
95.918.04
95.928.05
95.938.07
95.948.08
95.958.09
95.968.10
95.978.12
95.988.13
95.998.14
96.008.15
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Page 42
Stage-Area-Storage for Pond 6P: BIORENTION BASIN 2A
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
94.3063095.34206134
94.3265195.36210138
94.3468395.38213142
94.3670495.40216147
94.3873595.42220151
94.4075795.44223156
94.4278895.46227160
94.44801095.48230165
94.46821295.50234169
94.48851395.52237174
94.50871595.54240179
94.52901795.56244184
94.54921995.58247188
94.56952095.60251193
94.58972295.62254198
94.60992495.64257204
94.621022695.66261209
94.641042895.68264214
94.661073195.70268219
94.681093395.72271225
94.701123595.74275230
94.721143795.76278236
94.741163995.78281241
94.761194295.80285247
94.781214495.82288253
94.801244795.84292258
94.821264995.86295264
94.841295295.88298270
94.861315495.90302276
94.881335795.92305282
94.901366095.94309289
94.921386295.96312295
94.941416595.98316301
94.961436896.00319307
94.9814671
95.0014874
95.0215177
95.0415580
95.0615883
95.0816286
95.1016590
95.1216993
95.1417296
95.16175100
95.18179103
95.20182107
95.22186111
95.24189114
95.26192118
95.28196122
95.30199126
95.32203130
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Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 8P: INFILTRATION BASIN 3
Inflow Area =38,333 sf,22.73% Impervious,Inflow Depth > 0.72"for 2 YR-C event
Inflow =0.15 cfs @12.46 hrs,Volume= 2,310 cf
Outflow =0.15 cfs @12.47 hrs,Volume= 2,310 cfAtten= 0%, Lag= 0.8 min
Discarded =0.15 cfs @12.47 hrs,Volume= 2,310 cf
Primary =0.00 cfs @0.00 hrs,Volume= 0 cf
Routed to Link 34L : POA 3
Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 90.76' @ 12.47 hrs Surf.Area= 1,150 sf Storage= 6 cf
Plug-Flow detention time=0.7 min calculated for 2,310 cf (100% of inflow) Center-of-Mass det. time=0.7 min (864.0 - 863.3)
VolumeInvertAvail.StorageStorage Description
#190.75'4,888 cfCustom Stage Data (Prismatic)Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
90.75 95.001,150 1,1500 4,8880 4,888
DeviceRoutingInvertOutlet Devices
#1Device 392.75'2.5" Vert. Orifice C= 0.600 Limited to weir flow at low heads
#2Device 394.50'48.0" x 48.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads
#3Primary92.75'12.0" Round Culvert L= 7.0' RCP, groove end projecting, Ke= 0.200 Inlet / Outlet Invert= 92.75' / 92.65' S= 0.0143 '/ Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 0.79 sf
#4Discarded90.75'10.000 in/hr Exfiltration over Surface area Phase-In= 0.01'
Discarded OutFlow Max=0.15 cfs @ 12.47 hrs HW=90.76' (Free Discharge) 4=Exfiltration (Exfiltration Controls 0.15 cfs)
Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=90.75' TW=0.00' (Dynamic Tailwater) 3=Culvert ( Controls 0.00 cfs) 1=Orifice ( Controls 0.00 cfs) 2=Grate ( Controls 0.00 cfs)
Discarded OutFlow Max=0.15 cfs @ 12.47 hrs HW=90.76' (Free Discharge) 4=Exfiltration (Exfiltration Controls 0.15 cfs) Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=90.75' TW=0.00' (Dynamic Tailwater) 3=Culvert (Controls 0.00 cfs) 1=Orifice (Controls 0.00 cfs) 2=Grate (Controls 0.00 cfs) Pond 8P: INFILTRATION BASIN 3 Grate Civilist Exfiltration
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Pond 8P: INFILTRATION BASIN 3
Pond 8P: INFILTRATION BASIN 3
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025 Page 45
Page 45
Pond 8P: INFILTRATION BASIN 3
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Page 46
Hydrograph for Pond 8P: INFILTRATION BASIN 3
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Outflow (cfs)Discarded (cfs)Primary (cfs)
0.000.00090.750.000.000.00
2.000.00090.750.000.000.00
4.000.00090.750.000.000.00
6.000.01090.750.010.010.00
8.000.01190.750.010.010.00
10.000.02190.750.020.020.00
12.000.08390.750.080.080.00
14.000.09490.750.090.090.00
16.000.04290.750.040.040.00
18.000.02190.750.020.020.00
20.000.01190.750.010.010.00
22.000.01090.750.010.010.00
24.000.01090.750.010.010.00
26.000.00090.750.000.000.00
28.000.00090.750.000.000.00
30.000.00090.750.000.000.00
32.000.00090.750.000.000.00
34.000.00090.750.000.000.00
36.000.00090.750.000.000.00
38.000.00090.750.000.000.00
40.000.00090.750.000.000.00
42.000.00090.750.000.000.00
44.000.00090.750.000.000.00
46.000.00090.750.000.000.00
48.000.00090.750.000.000.00
50.000.00090.750.000.000.00
52.000.00090.750.000.000.00
54.000.00090.750.000.000.00
56.000.00090.750.000.000.00
58.000.00090.750.000.000.00
60.000.00090.750.000.000.00
62.000.00090.750.000.000.00
64.000.00090.750.000.000.00
66.000.00090.750.000.000.00
68.000.00090.750.000.000.00
70.000.00090.750.000.000.00
72.000.00090.750.000.000.00
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Page 47
Stage-Discharge for Pond 8P: INFILTRATION BASIN 3
Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)
90.750.000.000.0093.350.380.270.12
90.800.270.270.0093.400.390.270.12
90.850.270.270.0093.450.390.270.13
90.900.270.270.0093.500.400.270.13
90.950.270.270.0093.550.400.270.14
91.000.270.270.0093.600.410.270.14
91.050.270.270.0093.650.410.270.15
91.100.270.270.0093.700.420.270.15
91.150.270.270.0093.750.420.270.16
91.200.270.270.0093.800.430.270.16
91.250.270.270.0093.850.430.270.16
91.300.270.270.0093.900.430.270.17
91.350.270.270.0093.950.440.270.17
91.400.270.270.0094.000.440.270.18
91.450.270.270.0094.050.450.270.18
91.500.270.270.0094.100.450.270.18
91.550.270.270.0094.150.450.270.19
91.600.270.270.0094.200.460.270.19
91.650.270.270.0094.250.460.270.19
91.700.270.270.0094.300.460.270.20
91.750.270.270.0094.350.470.270.20
91.800.270.270.0094.400.470.270.20
91.850.270.270.0094.450.470.270.21
91.900.270.270.0094.500.480.270.21
91.950.270.270.0094.551.060.270.80
92.000.270.270.0094.602.140.271.87
92.050.270.270.0094.653.530.273.26
92.100.270.270.0094.705.170.274.90
92.150.270.270.0094.755.880.275.61
92.200.270.270.0094.806.000.275.74
92.250.270.270.0094.856.130.275.86
92.300.270.270.0094.906.250.275.98
92.350.270.270.0094.956.370.276.10
92.400.270.270.0095.006.480.276.22
92.450.270.270.00
92.500.270.270.00
92.550.270.270.00
92.600.270.270.00
92.650.270.270.00
92.700.270.270.00
92.750.270.270.00
92.800.270.270.00
92.850.280.270.02
92.900.300.270.03
92.950.320.270.05
93.000.330.270.06
93.050.340.270.07
93.100.350.270.08
93.150.360.270.09
93.200.360.270.10
93.250.370.270.10
93.300.380.270.11
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Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 48
Stage-Area-Storage for Pond 8P: INFILTRATION BASIN 3
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
90.751,150093.351,1502,990
90.801,1505793.401,1503,048
90.851,15011593.451,1503,105
90.901,15017393.501,1503,163
90.951,15023093.551,1503,220
91.001,15028893.601,1503,277
91.051,15034593.651,1503,335
91.101,15040293.701,1503,393
91.151,15046093.751,1503,450
91.201,15051893.801,1503,507
91.251,15057593.851,1503,565
91.301,15063293.901,1503,623
91.351,15069093.951,1503,680
91.401,15074894.001,1503,738
91.451,15080594.051,1503,795
91.501,15086394.101,1503,852
91.551,15092094.151,1503,910
91.601,15097794.201,1503,968
91.651,1501,03594.251,1504,025
91.701,1501,09394.301,1504,082
91.751,1501,15094.351,1504,140
91.801,1501,20794.401,1504,198
91.851,1501,26594.451,1504,255
91.901,1501,32394.501,1504,313
91.951,1501,38094.551,1504,370
92.001,1501,43894.601,1504,427
92.051,1501,49594.651,1504,485
92.101,1501,55294.701,1504,543
92.151,1501,61094.751,1504,600
92.201,1501,66894.801,1504,657
92.251,1501,72594.851,1504,715
92.301,1501,78294.901,1504,773
92.351,1501,84094.951,1504,830
92.401,1501,89895.001,1504,888
92.451,1501,955
92.501,1502,013
92.551,1502,070
92.601,1502,127
92.651,1502,185
92.701,1502,243
92.751,1502,300
92.801,1502,357
92.851,1502,415
92.901,1502,473
92.951,1502,530
93.001,1502,588
93.051,1502,645
93.101,1502,702
93.151,1502,760
93.201,1502,818
93.251,1502,875
93.301,1502,932
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025 Page 49
Analysis - Proposed Conditions NO Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 10P: PERVIOUS PAVEMENT 2B
Inflow Area = 8,276 sf,100.00% Impervious, Inflow Depth = 3.19" for 2 YR-C event Inflow = 0.56 cfs @ 12.12 hrs, Volume= 2,198 cf Outflow = 0.14 cfs @ 12.47 hrs, Volume= 2,194 cf, Atten=76%, Lag=21.0 min Primary = 0.14 cfs @ 12.47 hrs, Volume= 2,194 cf Routed to Pond 33P : INFILTRATION BASIN 2 Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 94.59' @ 12.47 hrs Surf.Area= 6,150 sf Storage= 748 cf Plug-Flow detention time= 111.7 min calculated for 2,193 cf (100% of inflow) Center-of-Mass det. time= 110.8 min (868.7 - 757.9)
VolumeInvertAvail.StorageStorage Description
#193.80'615 cfStone Storage Bed (Prismatic)Listed below (Recalc)1,538 cf Overall ร— 40.0% Voids
#294.30'231 cfSurface and Base Course (Prismatic)Listed below (Recalc)1,538 cf Overall ร— 15.0% Voids
#394.80'1,538 cfSurface (Prismatic)Listed below (Recalc)
2,383 cfTotal Available Storage
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
93.803,07500
94.303,0751,5381,538
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
94.303,07500
94.803,0751,5381,538
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
94.803,07500
95.303,0751,5381,538
DeviceRoutingInvertOutlet Devices
#1Device 393.80'2.5" Vert. Orifice C = 0.600
#2Device 394.80'48.0" x 48.0" Horiz. Grate C = 0.600
#3Primary92.08'12.0" Round Culvert L = 38.0' RCP, groove end projecting, Ke = 0.200Inlet / Outlet Invert= $ 92.08'/91.65' $ S = 0.0113'/' Cc = 0.900n=0.011, Flow Area=0.79 sf
primary OutFlow Max=0.14 cfs @ 12.47 hrs HW=94.59' TW=91.82' (Dynamic Tailwater) 3=Culvert (Passes 0.14 cfs of 6.12 cfs potential flow) 1=Orifice (Orifice Controls 0.14 cfs @ 3.98 fps) 2=Grate (Controls 0.00 cfs)
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Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 50
Pond 10P: PERVIOUS PAVEMENT 2B
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Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 10P: PERVIOUS PAVEMENT 2B
Pond 10P: PERVIOUS PAVEMENT 2B
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Analysis - Proposed Conditions NO Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 10P: PERVIOUS PAVEMENT 2B
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Primary (cfs)
0.000.00093.800.00
2.000.00493.800.00
4.000.013393.830.00
6.000.016593.850.01
8.000.029593.880.01
10.000.0313393.910.02
12.000.3239094.120.08
14.000.0347194.180.09
16.000.0219393.960.04
18.000.0112293.900.02
20.000.0110093.880.01
22.000.019093.870.01
24.000.018293.870.01
26.000.004893.840.00
28.000.003393.830.00
30.000.002593.820.00
32.000.002093.820.00
34.000.001793.810.00
36.000.001593.810.00
38.000.001393.810.00
40.000.001193.810.00
42.000.001093.810.00
44.000.00993.810.00
46.000.00993.810.00
48.000.00893.810.00
50.000.00793.810.00
52.000.00793.810.00
54.000.00693.810.00
56.000.00693.800.00
58.000.00693.800.00
60.000.00593.800.00
62.000.00593.800.00
64.000.00593.800.00
66.000.00593.800.00
68.000.00493.800.00
70.000.00493.800.00
72.000.00493.800.00
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Analysis - Proposed Conditions NOAA 24-hr D 2 YR-C Rainfall=3.42" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 53
Stage-Discharge for Pond 10P: PERVIOUS PAVEMENT 2B
Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)
93.800.0094.320.1194.840.58
93.810.0094.330.1194.850.74
93.820.0094.340.1194.860.93
93.830.0094.350.1194.871.13
93.840.0094.360.1194.881.35
93.850.0094.370.1194.891.58
93.860.0194.380.1194.901.82
93.870.0194.390.1194.912.07
93.880.0194.400.1294.922.34
93.890.0194.410.1294.932.62
93.900.0294.420.1294.942.91
93.910.0294.430.1294.953.21
93.920.0294.440.1294.963.52
93.930.0394.450.1294.973.84
93.940.0394.460.1294.984.17
93.950.0394.470.1294.994.50
93.960.0494.480.1295.004.85
93.970.0494.490.1395.015.21
93.980.0594.500.1395.025.57
93.990.0594.510.1395.035.95
94.000.0594.520.1395.046.33
94.010.0594.530.1395.056.72
94.020.0694.540.1395.066.83
94.030.0694.550.1395.076.84
94.040.0694.560.1395.086.86
94.050.0694.570.1395.096.87
94.060.0694.580.1395.106.88
94.070.0794.590.1495.116.90
94.080.0794.600.1495.126.91
94.090.0794.610.1495.136.93
94.100.0794.620.1495.146.94
94.110.0794.630.1495.156.95
94.120.0894.640.1495.166.97
94.130.0894.650.1495.176.98
94.140.0894.660.1495.186.99
94.150.0894.670.1495.197.01
94.160.0894.680.1495.207.02
94.170.0894.690.1595.217.04
94.180.0994.700.1595.227.05
94.190.0994.710.1595.237.06
94.200.0994.720.1595.247.08
94.210.0994.730.1595.257.09
94.220.0994.740.1595.267.10
94.230.0994.750.1595.277.12
94.240.1094.760.1595.287.13
94.250.1094.770.1595.297.15
94.260.1094.780.1595.307.16
94.270.1094.790.15
94.280.1094.800.16
94.290.1094.810.21
94.300.1094.820.31
94.310.1094.830.43
Page 221 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025 Page 54
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Area-Storage for Pond 10P: PERVIOUS PAVEMENT 2B
Elevation (feet)Storage (cubic-feet)Elevation (feet)Storage (cubic-feet)Elevation (feet)Storage (cubic-feet)
93.80094.3262494.84969
93.811294.3362994.85999
93.822594.3463394.861,030
93.833794.3563894.871,061
93.844994.3664394.881,092
93.856194.3764794.891,122
93.867494.3865294.901,153
93.878694.3965794.911,184
93.889894.4066194.921,215
93.8911194.4166694.931,245
93.9012394.4267094.941,276
93.9113594.4367594.951,307
93.9214894.4468094.961,338
93.9316094.4568494.971,368
93.9417294.4668994.981,399
93.9518594.4769394.991,430
93.9619794.4869895.001,461
93.9720994.4970395.011,491
93.9822194.5070795.021,522
93.9923494.5171295.031,553
94.0024694.5271695.041,584
94.0125894.5372195.051,614
94.0227194.5472695.061,645
94.0328394.5573095.071,676
94.0429594.5673595.081,707
94.0530894.5774095.091,737
94.0632094.5874495.101,768
94.0733294.5974995.111,799
94.0834494.6075395.121,830
94.0935794.6175895.131,860
94.1036994.6276395.141,891
94.1138194.6376795.151,922
94.1239494.6477295.161,953
94.1340694.6577695.171,983
94.1441894.6678195.182,014
94.1543094.6778695.192,045
94.1644394.6879095.202,076
94.1745594.6979595.212,106
94.1846794.7080095.222,137
94.1948094.7180495.232,168
94.2049294.7280995.242,199
94.2150494.7381395.252,229
94.2251794.7481895.262,260
94.2352994.7582395.272,291
94.2454194.7682795.282,322
94.2555494.7783295.292,352
94.2656694.7883695.302,383
94.2757894.79841
94.2859094.80846
94.2960394.81876
94.3061594.82907
94.3162094.83938
Page 222 Download HTML
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Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 15P: PERVIOUS PAVEMENT 3B
Inflow Area = 8,712 sf,100.00% Impervious, Inflow Depth = 3.19" for 2 YR-C event Inflow = 0.59 cfs @ 12.12 hrs, Volume= 2,314 cf Outflow = 0.15 cfs @ 12.46 hrs, Volume= 2,310 cf, Atten=75%, Lag=20.1 min Primary = 0.15 cfs @ 12.46 hrs, Volume= 2,310 cf Routed to Pond 8P : INFILTRATION BASIN 3 Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 94.71' @ 12.46 hrs Surf.Area= 5,926 sf Storage= 773 cf Plug-Flow detention time= 106.5 min calculated for 2,310 cf (100% of inflow) Center-of-Mass det. time= 105.4 min ( 863.3 - 757.9 )
VolumeInvertAvail.StorageStorage Description
#193.80'593 cfStone Storage Bed (Prismatic)Listed below (Recalc) 1,482 cf Overall ร— 40.0% Voids
#294.30'222 cfSurface and Base Course (Prismatic)Listed below (Recalc) 1,482 cf Overall ร— 15.0% Voids
#394.80'1,482 cfSurface (Prismatic)Listed below (Recalc)
2,296 cfTotal Available Storage
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
93.802,96300
94.302,9631,4821,482
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
94.302,96300
94.802,9631,4821,482
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
94.802,96300
95.302,9631,4821,482
DeviceRoutingInvertOutlet Devices
#1Device 393.80'2.5" Vert. Orifice C = 0.600
#2Device 394.80'48.0" x 48.0" Horiz. Grate C = 0.600
#3Primary92.00'12.0" Round Culvert L = 52.0' RCP, groove end projecting, Ke = 0.200Inlet / Outlet Invert= $ 92.00'/90.75' $ S = 0.0240'/ Cc = 0.900n=0.011, Flow Area=0.79 sf
Primary OutFlow Max=0.15 cfs @ 12.46 hrs HW=94.71' TW=90.76' (Dynamic Tailwater) 3=Culvert (Passes 0.15 cfs of 7.02 cfs potential flow) 1=Orifice (Orifice Controls 0.15 cfs @ 4.31 fps) 2=Grate (Controls 0.00 cfs)
Page 223 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 56
Pond 15P: PERVIOUS PAVEMENT 3B
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Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 15P: PERVIOUS PAVEMENT 3B
Pond 15P: PERVIOUS PAVEMENT 3B
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Analysis - Proposed Conditions NO Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LL
Hydrograph for Pond 15P: PERVIOUS PAVEMENT 3B
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Primary (cfs)
0.000.00093.800.00
2.000.00493.800.00
4.000.013493.830.00
6.000.016693.860.01
8.000.029593.880.01
10.000.0313393.910.02
12.000.3440194.140.08
14.000.0347594.200.09
16.000.0219193.960.04
18.000.0112093.900.02
20.000.019893.880.01
22.000.018893.870.01
24.000.018193.870.01
26.000.004693.840.00
28.000.003193.830.00
30.000.002493.820.00
32.000.001993.820.00
34.000.001693.810.00
36.000.001493.810.00
38.000.001293.810.00
40.000.001193.810.00
42.000.001093.810.00
44.000.00993.810.00
46.000.00893.810.00
48.000.00793.810.00
50.000.00793.810.00
52.000.00693.810.00
54.000.00693.810.00
56.000.00693.800.00
58.000.00593.800.00
60.000.00593.800.00
62.000.00593.800.00
64.000.00593.800.00
66.000.00493.800.00
68.000.00493.800.00
70.000.00493.800.00
72.000.00493.800.00
Page 226 Download HTML
Analysis - Proposed Conditions NOAA 24-hr D 2 YR-C Rainfall=3.42" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 59
Stage-Discharge for Pond 15P: PERVIOUS PAVEMENT 3B
Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)
93.800.0094.320.1194.840.58
93.810.0094.330.1194.850.74
93.820.0094.340.1194.860.93
93.830.0094.350.1194.871.13
93.840.0094.360.1194.881.35
93.850.0094.370.1194.891.58
93.860.0194.380.1194.901.82
93.870.0194.390.1194.912.07
93.880.0194.400.1294.922.34
93.890.0194.410.1294.932.62
93.900.0294.420.1294.942.91
93.910.0294.430.1294.953.21
93.920.0294.440.1294.963.52
93.930.0394.450.1294.973.84
93.940.0394.460.1294.984.17
93.950.0394.470.1294.994.50
93.960.0494.480.1295.004.85
93.970.0494.490.1395.015.21
93.980.0594.500.1395.025.57
93.990.0594.510.1395.035.95
94.000.0594.520.1395.046.33
94.010.0594.530.1395.056.72
94.020.0694.540.1395.067.11
94.030.0694.550.1395.077.46
94.040.0694.560.1395.087.47
94.050.0694.570.1395.097.48
94.060.0694.580.1395.107.50
94.070.0794.590.1495.117.51
94.080.0794.600.1495.127.52
94.090.0794.610.1495.137.53
94.100.0794.620.1495.147.54
94.110.0794.630.1495.157.55
94.120.0894.640.1495.167.56
94.130.0894.650.1495.177.57
94.140.0894.660.1495.187.58
94.150.0894.670.1495.197.60
94.160.0894.680.1495.207.61
94.170.0894.690.1595.217.62
94.180.0994.700.1595.227.63
94.190.0994.710.1595.237.64
94.200.0994.720.1595.247.65
94.210.0994.730.1595.257.66
94.220.0994.740.1595.267.67
94.230.0994.750.1595.277.68
94.240.1094.760.1595.287.69
94.250.1094.770.1595.297.70
94.260.1094.780.1595.307.72
94.270.1094.790.15
94.280.1094.800.16
94.290.1094.810.21
94.300.1094.820.31
94.310.1094.830.43
Page 227 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025 as LLC Page 60
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Area-Storage for Pond 15P: PERVIOUS PAVEMENT 3B
Elevation (feet)Storage (cubic-feet)Elevation (feet)Storage (cubic-feet)Elevation (feet)Storage (cubic-feet)
93.80094.3260194.84933
93.811294.3360694.85963
93.822494.3461094.86993
93.833694.3561594.871,022
93.844794.3661994.881,052
93.855994.3762494.891,081
93.867194.3862894.901,111
93.878394.3963394.911,141
93.889594.4063794.921,170
93.8910794.4164194.931,200
93.9011994.4264694.941,230
93.9113094.4365094.951,259
93.9214294.4465594.961,289
93.9315494.4565994.971,319
93.9416694.4666494.981,348
93.9517894.4766894.991,378
93.9619094.4867395.001,407
93.9720194.4967795.011,437
93.9821394.5068195.021,467
93.9922594.5168695.031,496
94.0023794.5269095.041,526
94.0124994.5369595.051,556
94.0226194.5469995.061,585
94.0327394.5570495.071,615
94.0428494.5670895.081,644
94.0529694.5771395.091,674
94.0630894.5871795.101,704
94.0732094.5972195.111,733
94.0833294.6072695.121,763
94.0934494.6173095.131,793
94.1035694.6273595.141,822
94.1136794.6373995.151,852
94.1237994.6474495.161,882
94.1339194.6574895.171,911
94.1440394.6675395.181,941
94.1541594.6775795.191,970
94.1642794.6876195.202,000
94.1743994.6976695.212,030
94.1845094.7077095.222,059
94.1946294.7177595.232,089
94.2047494.7277995.242,119
94.2148694.7378495.252,148
94.2249894.7478895.262,178
94.2351094.7579395.272,207
94.2452194.7679795.282,237
94.2553394.7780195.292,267
94.2654594.7880695.302,296
94.2755794.79810
94.2856994.80815
94.2958194.81844
94.3059394.82874
94.3159794.83904
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Analysis - Proposed Conditions NOAA 24-hr D 2 YR-C Rainfall=3.42" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 61
Summary for Pond 33P: INFILTRATION BASIN 2
Inflow Area = 27,007 sf, 30.65% Impervious, Inflow Depth > 0.97" for 2 YR-C event
Inflow = 0.14 cfs @ 12.47 hrs, Volume= 2,194 cf
Outflow = 0.08 cfs @ 14.24 hrs, Volume= 2,194 cf, Atten= 41%, Lag= 106.1 min
Discarded = 0.08 cfs @ 14.24 hrs, Volume= 2,194 cf
Primary = 0.00 cfs @ 0.00 hrs, Volume= 0 cf
Routed to Link 33L : POA 2
Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs
Peak Elev= 92.12' @ 14.24 hrs Surf.Area= 704 sf Storage= 286 cf
Plug-Flow detention time= 26.8 min calculated for 2,194 cf (100% of inflow)
Center-of-Mass det. time= 26.8 min ( 895.5 - 868.7 )
Volume Invert Avail.Storage Storage Description
#1 91.65' 4,378 cf Custom Stage Data (Prismatic)Listed below (Recalc)
Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet)
91.65 520 0 0
92.00 651 205 205
93.00 1,094 873 1,077
94.00 1,629 1,362 2,439
95.00 2,249 1,939 4,378
Device Routing Invert Outlet Devices
#1 Device 3 93.65' 2.5" Vert. Orifice C= 0.600 Limited to weir flow at low heads
L= 17.0' RCP, groove end projecting, Ke= 0.200
#2 Device 3 94.70' 48.0" x 48.0" Horiz. Grate C= 0.600
#3 Primary 93.65' 12.0" Round Culvert
Inlet / Outlet Invert= 93.65' / 93.50' S= 0.0088 ' /' Cc= 0.900
n= 0.012 Concrete pipe, finished, Flow Area= 0.79 sf
#4 Discarded 91.65' 4.950 in/hr Exfiltration over Surface area Phase-In= 0.01'
Discarded OutFlow Max=0.08 cfs @ 14.24 hrs HW=92.12' (Free Discharge)
4=Exfiltration (Exfiltration Controls 0.08 cfs)
Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=91.65' TW=0.00' (Dynamic Tailwater)
3=Culvert ( Controls 0.00 cfs)
1=Orifice ( Controls 0.00 cfs)
2=Grate ( Controls 0.00 cfs)
Pond 33P: INFILTRATION BASIN 2
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 33P: INFILTRATION BASIN 2
Pond 33P: INFILTRATION BASIN 2
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Pond 33P: INFILTRATION BASIN 2
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Page 64
Hydrograph for Pond 33P: INFILTRATION BASIN 2
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Outflow (cfs)Discarded (cfs)Primary (cfs)
0.000.00091.650.000.000.00
2.000.00091.650.000.000.00
4.000.00091.650.000.000.00
6.000.01091.650.010.010.00
8.000.01191.650.010.010.00
10.000.02291.650.020.020.00
12.000.08991.670.060.060.00
14.000.0928492.120.080.080.00
16.000.0416691.940.070.070.00
18.000.02291.650.020.020.00
20.000.01191.650.010.010.00
22.000.01191.650.010.010.00
24.000.01191.650.010.010.00
26.000.00091.650.000.000.00
28.000.00091.650.000.000.00
30.000.00091.650.000.000.00
32.000.00091.650.000.000.00
34.000.00091.650.000.000.00
36.000.00091.650.000.000.00
38.000.00091.650.000.000.00
40.000.00091.650.000.000.00
42.000.00091.650.000.000.00
44.000.00091.650.000.000.00
46.000.00091.650.000.000.00
48.000.00091.650.000.000.00
50.000.00091.650.000.000.00
52.000.00091.650.000.000.00
54.000.00091.650.000.000.00
56.000.00091.650.000.000.00
58.000.00091.650.000.000.00
60.000.00091.650.000.000.00
62.000.00091.650.000.000.00
64.000.00091.650.000.000.00
66.000.00091.650.000.000.00
68.000.00091.650.000.000.00
70.000.00091.650.000.000.00
72.000.00091.650.000.000.00
Page 232 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025 Page 65
Analysis - Proposed Conditions NO Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LL
Stage-Discharge for Pond 33P: INFILTRATION BASIN 2
Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)
91.650.000.000.0094.250.320.200.12
91.700.060.060.0094.300.330.210.12
91.750.060.060.0094.350.340.210.13
91.800.070.070.0094.400.350.220.13
91.850.070.070.0094.450.360.220.14
91.900.070.070.0094.500.360.220.14
91.950.070.070.0094.550.370.230.15
92.000.070.070.0094.600.380.230.15
92.050.080.080.0094.650.390.230.16
92.100.080.080.0094.700.400.240.16
92.150.080.080.0094.750.990.240.75
92.200.080.080.0094.802.070.241.82
92.250.090.090.0094.853.460.253.21
92.300.090.090.0094.903.580.253.33
92.350.090.090.0094.953.670.253.41
92.400.090.090.0095.003.720.263.46
92.450.100.100.00
92.500.100.100.00
92.550.100.100.00
92.600.110.110.00
92.650.110.110.00
92.700.110.110.00
92.750.110.110.00
92.800.120.120.00
92.850.120.120.00
92.900.120.120.00
92.950.120.120.00
93.000.130.130.00
93.050.130.130.00
93.100.130.130.00
93.150.130.130.00
93.200.140.140.00
93.250.140.140.00
93.300.140.140.00
93.350.150.150.00
93.400.150.150.00
93.450.150.150.00
93.500.160.160.00
93.550.160.160.00
93.600.160.160.00
93.650.170.170.00
93.700.170.170.00
93.750.190.170.02
93.800.210.170.03
93.850.230.180.05
93.900.240.180.06
93.950.260.180.07
94.000.270.190.08
94.050.280.190.09
94.100.290.190.10
94.150.300.200.10
94.200.310.200.11
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2 YR-C Rainfall=3.42" Printed 12/19/2025 Page 66
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Area-Storage for Pond 33P: INFILTRATION BASIN 2
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
91.655200
91.7053926
91.7555754
91.8057682
91.85595111
91.90614142
91.95632173
92.00651205
92.05673238
92.10695272
92.15717308
92.20740344
92.25762382
92.30784420
92.35806460
92.40828501
92.45850543
92.50873586
92.55895630
92.60917675
92.65939722
92.70961769
92.75983818
92.801,005867
92.851,028918
92.901,050970
92.951,0721,023
93.001,0941,077
93.051,1211,133
93.101,1481,190
93.151,1741,248
93.201,2011,307
93.251,2281,368
93.301,2551,430
93.351,2811,493
93.401,3081,558
93.451,3351,624
93.501,3621,691
93.551,3881,760
93.601,4151,830
93.651,4421,902
93.701,4691,974
93.751,4952,048
93.801,5222,124
93.851,5492,201
93.901,5762,279
93.951,6022,358
94.001,6292,439
94.051,6602,521
94.101,6912,605
94.151,7222,690
94.201,7532,777
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
94.251,7842,866
94.301,8152,956
94.351,8463,047
94.401,8773,140
94.451,9083,235
94.501,9393,331
94.551,9703,429
94.602,0013,528
94.652,0323,629
94.702,0633,731
94.752,0943,835
94.802,1253,941
94.852,1564,048
94.902,1874,156
94.952,2184,266
95.002,2494,378
Page 234 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025 as LLC Page 67
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 42P: BIORENTION BASIN 3A
Inflow Area = 29,621 sf, 0.00% Impervious, Inflow Depth = 0.01" for 2 YR-C event Inflow = 0.00 cfs @ 24.02 hrs, Volume= 13 cf Outflow = 0.00 cfs @ 0.00 hrs, Volume= 0 cf, Atten= 100%, Lag= 0.0 min Primary = 0.00 cfs @ 0.00 hrs, Volume= 0 cf Routed to Pond 8P : INFILTRATION BASIN 3 Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 93.42' @ 25.28 hrs Surf.Area= 137 sf Storage= 13 cf Plug-Flow detention time=(not calculated: initial storage exceeds outflow) Center-of-Mass det. time=(not calculated: no outflow)
VolumeInvertAvail.StorageStorage Description
#193.30'1,041 cfCustom Stage Data (Prismatic)Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
93.307700
94.00417173173
95.001,3198681,041
DeviceRoutingInvertOutlet Devices
#1Device 393.80'2.5" Vert. Orifice C = 0.600Limited to weir flow at low heads
#2Device 394.50'48.0" x 48.0" Horiz. Grate C = 0.600
#3Primary90.80'12.0" Round Culvert\n L = 11.0' RCP, groove end projecting, Ke = 0.200\nInlet / Outlet Invert= $ 90.80' / 90.75' $ S = 0.0045' /' Cc = 0.900\n n = 0.012 Concrete pipe, finished, Flow Area= $ 0.79 $ sf
Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=93.30' TW=90.75' (Dynamic Tailwater) 3=Culvert (Passes 0.00 cfs of 6.42 cfs potential flow) 1=Orifice ( Controls 0.00 cfs) 2=Grate ( Controls 0.00 cfs)
Bond 42B: BIOVENTION BASIN 3AGrate Orifice
Pond 42P ยท BIORENTION BASIN 3A
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025 as LLC Page 68
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 42P: BIORENTION BASIN 3A
Pond 42P: BIORENTION BASIN 3A
Page 236 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025 as LLC Page 69
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 42P: BIORENTION BASIN 3A
Page 237 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025
Analysis - Proposed Conditions NO Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 42P: BIORENTION BASIN 3A
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Primary (cfs)
0.000.00093.300.00
2.000.00093.300.00
4.000.00093.300.00
6.000.00093.300.00
8.000.00093.300.00
10.000.00093.300.00
12.000.00093.300.00
14.000.00093.300.00
16.000.00093.300.00
18.000.00093.300.00
20.000.00193.320.00
22.000.00693.360.00
24.000.001293.420.00
26.000.001393.420.00
28.000.001393.420.00
30.000.001393.420.00
32.000.001393.420.00
34.000.001393.420.00
36.000.001393.420.00
38.000.001393.420.00
40.000.001393.420.00
42.000.001393.420.00
44.000.001393.420.00
46.000.001393.420.00
48.000.001393.420.00
50.000.001393.420.00
52.000.001393.420.00
54.000.001393.420.00
56.000.001393.420.00
58.000.001393.420.00
60.000.001393.420.00
62.000.001393.420.00
64.000.001393.420.00
66.000.001393.420.00
68.000.001393.420.00
70.000.001393.420.00
72.000.001393.420.00
Page 70
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025 Page 71
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 71
Stage-Discharge for Pond 42P: BIORENTION BASIN 3A
Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)
93.300.0093.820.0094.340.11
93.310.0093.830.0094.350.11
93.320.0093.840.0094.360.11
93.330.0093.850.0094.370.11
93.340.0093.860.0194.380.11
93.350.0093.870.0194.390.11
93.360.0093.880.0194.400.12
93.370.0093.890.0194.410.12
93.380.0093.900.0294.420.12
93.390.0093.910.0294.430.12
93.400.0093.920.0294.440.12
93.410.0093.930.0394.450.12
93.420.0093.940.0394.460.12
93.430.0093.950.0394.470.12
93.440.0093.960.0494.480.12
93.450.0093.970.0494.490.13
93.460.0093.980.0594.500.13
93.470.0093.990.0594.510.18
93.480.0094.000.0594.520.28
93.490.0094.010.0594.530.40
93.500.0094.020.0694.540.55
93.510.0094.030.0694.550.72
93.520.0094.040.0694.560.90
93.530.0094.050.0694.571.10
93.540.0094.060.0694.581.32
93.550.0094.070.0794.591.55
93.560.0094.080.0794.601.79
93.570.0094.090.0794.612.05
93.580.0094.100.0794.622.31
93.590.0094.110.0794.632.59
93.600.0094.120.0894.642.88
93.610.0094.130.0894.653.18
93.620.0094.140.0894.663.49
93.630.0094.150.0894.673.81
93.640.0094.160.0894.684.14
93.650.0094.170.0894.694.48
93.660.0094.180.0994.704.83
93.670.0094.190.0994.715.18
93.680.0094.200.0994.725.55
93.690.0094.210.0994.735.92
93.700.0094.220.0994.746.30
93.710.0094.230.0994.756.69
93.720.0094.240.1094.767.09
93.730.0094.250.1094.777.49
93.740.0094.260.1094.787.91
93.750.0094.270.1094.798.33
93.760.0094.280.1094.808.75
93.770.0094.290.1094.818.86
93.780.0094.300.1094.828.87
93.790.0094.310.1094.838.88
93.800.0094.320.1194.848.89
93.810.0094.330.1194.858.91
Elevation (feet)Primary (cfs)
94.868.92
94.878.93
94.888.94
94.898.96
94.908.97
94.918.98
94.928.99
94.939.01
94.949.02
94.959.03
94.969.04
94.979.06
94.989.07
94.999.08
95.009.09
Page 239 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 72
Stage-Area-Storage for Pond 42P: BIORENTION BASIN 3A
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
93.3077094.34724367
93.3287294.36742381
93.3496394.38760396
93.36106594.40778412
93.38116894.42796428
93.401261094.44814444
93.421351394.46832460
93.441451694.48850477
93.461551994.50868494
93.481642294.52886512
93.501742594.54904530
93.521842994.56922548
93.541943294.58940566
93.562033694.60958585
93.582134194.62976605
93.602234594.64994625
93.622325094.661,012645
93.642425494.681,030665
93.662525994.701,048686
93.682626494.721,066707
93.702717094.741,084728
93.722817594.761,103750
93.742918194.781,121773
93.763008794.801,139795
93.783109394.821,157818
93.803209994.841,175841
93.8233010694.861,193865
93.8433911294.881,211889
93.8634911994.901,229914
93.8835912694.921,247938
93.9036813494.941,265963
93.9237814194.961,283989
93.9438814994.981,3011,015
93.9639815795.001,3191,041
93.98407165
94.00417173
94.02435181
94.04453190
94.06471200
94.08489209
94.10507219
94.12525229
94.14543240
94.16561251
94.18579263
94.20597274
94.22615286
94.24633299
94.26652312
94.28670325
94.30688339
94.32706353
Page 240 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025
YR-C Rainfall=3.42" Printed 12/19/2025 Page 73
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Link 32L: POA1
Inflow Area = 73,567 sf, 27.76% Impervious, Inflow Depth = 0.00" for 2 YR-C event Inflow = 0.00 cfs @ 0.00 hrs, Volume= 0 cf Primary = 0.00 cfs @ 0.00 hrs, Volume= 0 cf, Atten=0%, Lag=0.0 min
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 32L: POA1
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 74
Hydrograph for Link 32L: POA1
Time (hours)Inflow (cfs)Elevation (feet)Primary (cfs)
0.000.000.000.00
1.000.000.000.00
2.000.000.000.00
3.000.000.000.00
4.000.000.000.00
5.000.000.000.00
6.000.000.000.00
7.000.000.000.00
8.000.000.000.00
9.000.000.000.00
10.000.000.000.00
11.000.000.000.00
12.000.000.000.00
13.000.000.000.00
14.000.000.000.00
15.000.000.000.00
16.000.000.000.00
17.000.000.000.00
18.000.000.000.00
19.000.000.000.00
20.000.000.000.00
21.000.000.000.00
22.000.000.000.00
23.000.000.000.00
24.000.000.000.00
25.000.000.000.00
26.000.000.000.00
27.000.000.000.00
28.000.000.000.00
29.000.000.000.00
30.000.000.000.00
31.000.000.000.00
32.000.000.000.00
33.000.000.000.00
34.000.000.000.00
35.000.000.000.00
36.000.000.000.00
37.000.000.000.00
38.000.000.000.00
39.000.000.000.00
40.000.000.000.00
41.000.000.000.00
42.000.000.000.00
43.000.000.000.00
44.000.000.000.00
45.000.000.000.00
46.000.000.000.00
47.000.000.000.00
48.000.000.000.00
49.000.000.000.00
50.000.000.000.00
51.000.000.000.00
Time (hours)Inflow (cfs)Elevation (feet)Primary (cfs)
52.000.000.000.00
53.000.000.000.00
54.000.000.000.00
55.000.000.000.00
56.000.000.000.00
57.000.000.000.00
58.000.000.000.00
59.000.000.000.00
60.000.000.000.00
61.000.000.000.00
62.000.000.000.00
63.000.000.000.00
64.000.000.000.00
65.000.000.000.00
66.000.000.000.00
67.000.000.000.00
68.000.000.000.00
69.000.000.000.00
70.000.000.000.00
71.000.000.000.00
72.000.000.000.00
Page 242 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025
YR-C Rainfall=3.42" Printed 12/19/2025 Page 75
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Link 33L: POA 2
Inflow Area = 27,007 sf, 30.65% Impervious, Inflow Depth = 0.00" for 2 YR-C event Inflow = 0.00 cfs @ 0.00 hrs, Volume= 0 cf Primary = 0.00 cfs @ 0.00 hrs, Volume= 0 cf, Atten=0%, Lag=0.0 min
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 33L: POA 2
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025
2 YR-C Rainfall=3.42" Printed 12/19/2025 Page 76
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Link 33L: POA 2
Time (hours)Inflow (cfs)Elevation (feet)Primary (cfs)
0.000.000.000.00
1.000.000.000.00
2.000.000.000.00
3.000.000.000.00
4.000.000.000.00
5.000.000.000.00
6.000.000.000.00
7.000.000.000.00
8.000.000.000.00
9.000.000.000.00
10.000.000.000.00
11.000.000.000.00
12.000.000.000.00
13.000.000.000.00
14.000.000.000.00
15.000.000.000.00
16.000.000.000.00
17.000.000.000.00
18.000.000.000.00
19.000.000.000.00
20.000.000.000.00
21.000.000.000.00
22.000.000.000.00
23.000.000.000.00
24.000.000.000.00
25.000.000.000.00
26.000.000.000.00
27.000.000.000.00
28.000.000.000.00
29.000.000.000.00
30.000.000.000.00
31.000.000.000.00
32.000.000.000.00
33.000.000.000.00
34.000.000.000.00
35.000.000.000.00
36.000.000.000.00
37.000.000.000.00
38.000.000.000.00
39.000.000.000.00
40.000.000.000.00
41.000.000.000.00
42.000.000.000.00
43.000.000.000.00
44.000.000.000.00
45.000.000.000.00
46.000.000.000.00
47.000.000.000.00
48.000.000.000.00
49.000.000.000.00
50.000.000.000.00
51.000.000.000.00
Time (hours)Inflow (cfs)Elevation (feet)Primary (cfs)
52.000.000.000.00
53.000.000.000.00
54.000.000.000.00
55.000.000.000.00
56.000.000.000.00
57.000.000.000.00
58.000.000.000.00
59.000.000.000.00
60.000.000.000.00
61.000.000.000.00
62.000.000.000.00
63.000.000.000.00
64.000.000.000.00
65.000.000.000.00
66.000.000.000.00
67.000.000.000.00
68.000.000.000.00
69.000.000.000.00
70.000.000.000.00
71.000.000.000.00
72.000.000.000.00
Page 244 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 77
Summary for Link 34L: POA 3
Inflow Area = 38,333 sf, 22.73% Impervious, Inflow Depth = 0.00" for 2 YR-C event Inflow = 0.00 cfs @ 0.00 hrs, Volume= 0 cf Primary = 0.00 cfs @ 0.00 hrs, Volume= 0 cf, Atten=0%, Lag=0.0 min
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 34L: POA 3
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025
YR-C Rainfall=3.42" Printed 12/19/2025 Page 78
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Link 34L: POA 3
Time (hours)Inflow (cfs)Elevation (feet)Primary (cfs)
0.000.000.000.00
1.000.000.000.00
2.000.000.000.00
3.000.000.000.00
4.000.000.000.00
5.000.000.000.00
6.000.000.000.00
7.000.000.000.00
8.000.000.000.00
9.000.000.000.00
10.000.000.000.00
11.000.000.000.00
12.000.000.000.00
13.000.000.000.00
14.000.000.000.00
15.000.000.000.00
16.000.000.000.00
17.000.000.000.00
18.000.000.000.00
19.000.000.000.00
20.000.000.000.00
21.000.000.000.00
22.000.000.000.00
23.000.000.000.00
24.000.000.000.00
25.000.000.000.00
26.000.000.000.00
27.000.000.000.00
28.000.000.000.00
29.000.000.000.00
30.000.000.000.00
31.000.000.000.00
32.000.000.000.00
33.000.000.000.00
34.000.000.000.00
35.000.000.000.00
36.000.000.000.00
37.000.000.000.00
38.000.000.000.00
39.000.000.000.00
40.000.000.000.00
41.000.000.000.00
42.000.000.000.00
43.000.000.000.00
44.000.000.000.00
45.000.000.000.00
46.000.000.000.00
47.000.000.000.00
48.000.000.000.00
49.000.000.000.00
50.000.000.000.00
51.000.000.000.00
Time (hours)Inflow (cfs)Elevation (feet)Primary (cfs)
52.000.000.000.00
53.000.000.000.00
54.000.000.000.00
55.000.000.000.00
56.000.000.000.00
57.000.000.000.00
58.000.000.000.00
59.000.000.000.00
60.000.000.000.00
61.000.000.000.00
62.000.000.000.00
63.000.000.000.00
64.000.000.000.00
65.000.000.000.00
66.000.000.000.00
67.000.000.000.00
68.000.000.000.00
69.000.000.000.00
70.000.000.000.00
71.000.000.000.00
72.000.000.000.00
Page 246 Download HTML
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 12/19/2025 Page 79
Time span=0.00-72.00 hrs, dt=0.01 hrs, 7201 points Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method
Subcatchment2S: DA-P1 PERVIOUS Runoff Area=1.220 ac 0.00% Impervious Runoff Depth=0.05" Flow Length=525' Tc=14.2 min CN=39/0 Runoff=0.01 cfs 222 cf
Subcatchment3S: DA-P3 PERVIOUS Runoff Area=0.680 ac 0.00% Impervious Runoff Depth=0.05" Flow Length=363' Tc=11.5 min CN=39/0 Runoff=0.00 cfs 124 cf
Subcatchment4S: DA-P2PERVIOUS Runoff Area=0.430 ac 0.00% Impervious Runoff Depth=0.05" Flow Length=168' Slope=0.0300'/' Tc=8.7 min CN=39/0 Runoff=0.00 cfs 78 cf
Subcatchment6S: DA-P3IMPERVIOUS Runoff Area=0.200 ac 100.00% Impervious Runoff Depth=3.81" Flow Length=155' Tc=4.3 min CN=0/98 Runoff=0.70 cfs 2,762 cf
Subcatchment7S: DA-P2IMPERVIOUS Runoff Area=0.190 ac 100.00% Impervious Runoff Depth=3.81" Flow Length=172' Tc=4.3 min CN=0/98 Runoff=0.66 cfs 2,624 cf
Subcatchment8S: DA-P1 IMPERVIOUS Runoff Area=0.400 ac 100.00% Impervious Runoff Depth=3.81" Flow Length=372' Slope=0.0200'/' Tc=2.5 min CN=0/98 Runoff=1.58 cfs 5,525 cf
Runoff Area=3,000 sf 100.00% Impervious Runoff Depth=3.81" Flow Length=40' Tc=0.3 min CN=0/98 Runoff=0.29 cfs 951 cf
Subcatchment14S: LOT 11 Roof
Pond 2P: Subsurface Infiltration Basin 1 Discarded=0.42 cfs 5,192 cf Peak Elev=87.01' Storage=7 cf Inflow=0.42 cfs 5,192 cf Primary=0.00 cfs 0 cf Outflow=0.42 cfs 5,192 cf
Pond 5P: BIORETENTIONBASIN 1A Peak Elev=92.21' Storage=3,321 cf Inflow=1.58 cfs 5,747 cf Outflow=0.17 cfs 4,241 cf
Peak Elev=94.83' Storage=51 cf Inflow=0.00 cfs 78 cf Outflow=0.00 cfs 32 cf
Pond 6P: BIORENTION BASIN 2A
Pond 8P: INFILTRATIONBASIN 3 Peak Elev=90.76' Storage=13 cf Inflow=0.27 cfs 2,783 cf
Pond 8P: INFILTRATIONBASIN 3 Peak Elev=90.76' Storage=13 cf Inflow=0.27 cfs 2,783 cf Discarded=0.27 cfs 2,783 cf Primary=0.00 cfs 0 cf Outflow=0.27 cfs 2,783 cf
Pond 10P: PERVIOUS PAVEMENT2B Peak Elev=94.81' Storage=870 cf Inflow=0.66 cfs 2,624 cf Outflow=0.19 cfs 2,620 cf
Pond 15P: PERVIOUS PAVEMENT3B Peak Elev=94.82' Storage=866 cf Inflow=0.70 cfs 2,762 cf Outflow=0.27 cfs 2,759 cf
Pond 33P: INFILTRATIONBASIN 2 Peak Elev=92.28' Storage=408 cf Inflow=0.19 cfs 2,652 cf Discarded=0.09 cfs 2,652 cf Primary=0.00 cfs 0 cf Outflow=0.09 cfs 2,652 cf
Pond 42P: BIORENTION BASIN 3A Peak Elev=93.84' Storage=112 cf Inflow=0.00 cfs 124 cf Outflow=0.00 cfs 24 cf
Link 32L: POA1
Inflow=0.00 cfs 0 cf Primary=0.00 cfs 0 cf
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 12/19/2025 Page 80
_ink 33L: POA2 _ink 34L: POA3 Total Runoff Area = 138,907 sf Runoff Volume = 12,288 cf Average Runoff Depth = 1.06" 73.07% Pervious = 101,495 sf 26.93% Impervious = 37,412 sf
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NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 12/19/2025 s LLC Page 81
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 2S: DA-P1 PERVIOUS
Runoff = 0.01 cfs @ 17.16 hrs, Volume= Routed to Pond 5P : BIORETENTION BASIN 1A
222 cf, Depth= 0.05"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-F Rainfall=4.04"
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NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 12/19/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 2S: DA-P1 PERVIOUS
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.100.000.000.00
4.000.210.000.000.00
6.000.340.000.000.00
8.000.520.000.000.00
10.000.800.000.000.00
12.001.940.000.000.00
14.003.240.000.000.00
16.003.520.010.000.01
18.003.700.020.000.01
20.003.830.030.000.01
22.003.940.040.000.01
24.004.040.050.000.01
26.004.040.050.000.00
28.004.040.050.000.00
30.004.040.050.000.00
32.004.040.050.000.00
34.004.040.050.000.00
36.004.040.050.000.00
38.004.040.050.000.00
40.004.040.050.000.00
42.004.040.050.000.00
44.004.040.050.000.00
46.004.040.050.000.00
48.004.040.050.000.00
50.004.040.050.000.00
52.004.040.050.000.00
54.004.040.050.000.00
56.004.040.050.000.00
58.004.040.050.000.00
60.004.040.050.000.00
62.004.040.050.000.00
64.004.040.050.000.00
66.004.040.050.000.00
68.004.040.050.000.00
70.004.040.050.000.00
72.004.040.050.000.00
Page 82
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NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 12/19/2025 s LLC Page 83
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 3S: DA-P3 PERVIOUS
Runoff = 0.00 cfs @ 17.07 hrs, Volume= Routed to Pond 42P : BIORENTION BASIN 3A
124 cf, Depth= 0.05"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-F Rainfall=4.04"
Area (ac) CN Description
0.680 39 >75% Grass cover, Good, HSG A
0.680 39 100.00% Pervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
9.0 83 0.0400 0.15 Sheet Flow, Grass: Dense n= 0.240 P2= 3.42" Using McCuen-Spiess flow length
0.2 10 0.0240 1.08 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps
2.2 270 2.00 Direct Entry, Pioe Flow
11.5 363 Total
Page 251 Download HTML
NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 12/19/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 3S: DA-P3 PERVIOUS
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.100.000.000.00
4.000.210.000.000.00
6.000.340.000.000.00
8.000.520.000.000.00
10.000.800.000.000.00
12.001.940.000.000.00
14.003.240.000.000.00
16.003.520.010.000.00
18.003.700.020.000.00
20.003.830.030.000.00
22.003.940.040.000.00
24.004.040.050.000.00
26.004.040.050.000.00
28.004.040.050.000.00
30.004.040.050.000.00
32.004.040.050.000.00
34.004.040.050.000.00
36.004.040.050.000.00
38.004.040.050.000.00
40.004.040.050.000.00
42.004.040.050.000.00
44.004.040.050.000.00
46.004.040.050.000.00
48.004.040.050.000.00
50.004.040.050.000.00
52.004.040.050.000.00
54.004.040.050.000.00
56.004.040.050.000.00
58.004.040.050.000.00
60.004.040.050.000.00
62.004.040.050.000.00
64.004.040.050.000.00
66.004.040.050.000.00
68.004.040.050.000.00
70.004.040.050.000.00
72.004.040.050.000.00
Page 84
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NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 12/19/2025 s LLC Page 85
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 4S: DA-P2 PERVIOUS
Runoff = 0.00 cfs @ 16.97 hrs, Volume= Routed to Pond 6P : BIORENTION BASIN 2A
78 cf, Depth= 0.05"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-F Rainfall=4.04"
Area (ac) CN Description
0.430 39 >75% Grass cover, Good, HSG A
0.430 39 100.00% Pervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
7.8 60 0.0300 0.13 Sheet Flow, Grass: Dense n= 0.240 P2= 3.42"
0.9 108 2.00 Direct Entry, Pipe Flow
8.7 168 Total
Subcatchment 4S: DA-P2 PERVIOUS
Subcatchment 4S: DA-P2 PERVIOUS
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NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 12/19/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 4S: DA-P2 PERVIOUS
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.100.000.000.00
4.000.210.000.000.00
6.000.340.000.000.00
8.000.520.000.000.00
10.000.800.000.000.00
12.001.940.000.000.00
14.003.240.000.000.00
16.003.520.010.000.00
18.003.700.020.000.00
20.003.830.030.000.00
22.003.940.040.000.00
24.004.040.050.000.00
26.004.040.050.000.00
28.004.040.050.000.00
30.004.040.050.000.00
32.004.040.050.000.00
34.004.040.050.000.00
36.004.040.050.000.00
38.004.040.050.000.00
40.004.040.050.000.00
42.004.040.050.000.00
44.004.040.050.000.00
46.004.040.050.000.00
48.004.040.050.000.00
50.004.040.050.000.00
52.004.040.050.000.00
54.004.040.050.000.00
56.004.040.050.000.00
58.004.040.050.000.00
60.004.040.050.000.00
62.004.040.050.000.00
64.004.040.050.000.00
66.004.040.050.000.00
68.004.040.050.000.00
70.004.040.050.000.00
72.004.040.050.000.00
Page 86
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NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 12/19/2025 s LLC Page 87
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 6S: DA-P3 IMPERVIOUS
Runoff = 0.70 cfs @ 12.12 hrs, Volume= Routed to Pond 15P : PERVIOUS PAVEMENT 3B 2,762 cf, Depth= 3.81"
2,762 cf, Depth= 3.81"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-F Rainfall=4.04"
Area (ac) CN Description
0.200 98 Paved parking, HSG A
0.200 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
3.6 37 0.0300 0.17 Sheet Flow, Grass: Short n= 0.150 P2= 3.42" Shallow Concentrated Flow, Paved Kv= 20.3 fps
0.7 118 0.0200 2.87
4.3 155 Total
Subcatchment 6S: DA-P3 IMPERVIOUS
Subcatchment 6S: DA-P3 IMPERVIOUS
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NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 12/19/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 6S: DA-P3 IMPERVIOUS
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.100.000.010.00
4.000.210.000.080.01
6.000.340.000.180.01
8.000.520.000.340.02
10.000.800.000.600.04
12.001.940.001.710.40
14.003.240.003.010.04
16.003.520.003.280.02
18.003.700.003.460.01
20.003.830.003.590.01
22.003.940.003.710.01
24.004.040.003.810.01
26.004.040.003.810.00
28.004.040.003.810.00
30.004.040.003.810.00
32.004.040.003.810.00
34.004.040.003.810.00
36.004.040.003.810.00
38.004.040.003.810.00
40.004.040.003.810.00
42.004.040.003.810.00
44.004.040.003.810.00
46.004.040.003.810.00
48.004.040.003.810.00
50.004.040.003.810.00
52.004.040.003.810.00
54.004.040.003.810.00
56.004.040.003.810.00
58.004.040.003.810.00
60.004.040.003.810.00
62.004.040.003.810.00
64.004.040.003.810.00
66.004.040.003.810.00
68.004.040.003.810.00
70.004.040.003.810.00
72.004.040.003.810.00
Page 88
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NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 12/19/2025 s LLC Page 89
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 7S: DA-P2 IMPERVIOUS
Runoff = 0.66 cfs @ 12.12 hrs, Volume= Routed to Pond 10P : PERVIOUS PAVEMENT 2B 2,624 cf, Depth= 3.81"
2,624 cf, Depth= 3.81"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-F Rainfall=4.04"
Area (ac) CN Description
0.190 98 Paved roads w/curbs & sewers, HSG A
0.190 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
3.5 35 0.0300 0.17 Sheet Flow, Grass: Short n= 0.150 P2= 3.42"
0.8 137 0.0200 2.87 Shallow Concentrated Flow, Paved Kv= 20.3 fps
4.3 172 Total
Subcatchment 7S: DA-P2 IMPERVIOUS
Subcatchment 7S: DA-P2 IMPERVIOUS
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NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 12/19/2025
YR-F Rainfall=4.04" Printed 12/19/2025 Page 90
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 7S: DA-P2 IMPERVIOUS
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.100.000.010.00
4.000.210.000.080.01
6.000.340.000.180.01
8.000.520.000.340.02
10.000.800.000.600.03
12.001.940.001.710.38
14.003.240.003.010.04
16.003.520.003.280.02
18.003.700.003.460.01
20.003.830.003.590.01
22.003.940.003.710.01
24.004.040.003.810.01
26.004.040.003.810.00
28.004.040.003.810.00
30.004.040.003.810.00
32.004.040.003.810.00
34.004.040.003.810.00
36.004.040.003.810.00
38.004.040.003.810.00
40.004.040.003.810.00
42.004.040.003.810.00
44.004.040.003.810.00
46.004.040.003.810.00
48.004.040.003.810.00
50.004.040.003.810.00
52.004.040.003.810.00
54.004.040.003.810.00
56.004.040.003.810.00
58.004.040.003.810.00
60.004.040.003.810.00
62.004.040.003.810.00
64.004.040.003.810.00
66.004.040.003.810.00
68.004.040.003.810.00
70.004.040.003.810.00
72.004.040.003.810.00
Page 258 Download HTML
NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 12/19/2025 as LLC Page 91
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 8S: DA-P1 IMPERVIOUS
Runoff = 1.58 cfs @ 12.11 hrs, Volume= Routed to Pond 5P : BIORETENTION BASIN 1A
5,525 cf, Depth= 3.81"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-F Rainfall=4.04"
Area (ac) CN Description
0.400 98 Paved roads w/curbs & sewers, HSG A
0.400 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
1.4 235 0.0200 2.87 Shallow Concentrated Flow, Paved Kv= 20.3 fps
1.1 137 2.00 Direct Entry, Pipe Flow
2.5 372 Total
Subcatchment 8S: DA-P1_IMPERVIOUS Pipe Flow
Subcatchment 8S: DA-P1 IMPERVIOUS
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours)
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NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 12/19/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 8S: DA-P1 IMPERVIOUS
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.100.000.010.01
4.000.210.000.080.02
6.000.340.000.180.02
8.000.520.000.340.04
10.000.800.000.600.07
12.001.940.001.710.93
14.003.240.003.010.08
16.003.520.003.280.04
18.003.700.003.460.03
20.003.830.003.590.03
22.003.940.003.710.02
24.004.040.003.810.02
26.004.040.003.810.00
28.004.040.003.810.00
30.004.040.003.810.00
32.004.040.003.810.00
34.004.040.003.810.00
36.004.040.003.810.00
38.004.040.003.810.00
40.004.040.003.810.00
42.004.040.003.810.00
44.004.040.003.810.00
46.004.040.003.810.00
48.004.040.003.810.00
50.004.040.003.810.00
52.004.040.003.810.00
54.004.040.003.810.00
56.004.040.003.810.00
58.004.040.003.810.00
60.004.040.003.810.00
62.004.040.003.810.00
64.004.040.003.810.00
66.004.040.003.810.00
68.004.040.003.810.00
70.004.040.003.810.00
72.004.040.003.810.00
Page 92
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NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 12/19/2025 s LLC Page 93
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 14S: LOT 11 Roof
Runoff = 0.29 cfs @ 12.09 hrs, Volume= Routed to Pond 2P : Subsurface Infiltration Basin 1 951 cf, Depth= 3.81"
951 cf, Depth= 3.81"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-F Rainfall=4.04"
Area (sf) CN Description
3,000 98 Roofs, HSG A
3,000 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)
0.3 40 2.00 Direct Entry, Pipe Flow
Subcatchment 14S: LOT 11 Roof
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NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 12/19/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 14S: LOT 11 Roof
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.100.000.010.00
4.000.210.000.080.00
6.000.340.000.180.00
8.000.520.000.340.01
10.000.800.000.600.01
12.001.940.001.710.18
14.003.240.003.010.01
16.003.520.003.280.01
18.003.700.003.460.01
20.003.830.003.590.00
22.003.940.003.710.00
24.004.040.003.810.00
26.004.040.003.810.00
28.004.040.003.810.00
30.004.040.003.810.00
32.004.040.003.810.00
34.004.040.003.810.00
36.004.040.003.810.00
38.004.040.003.810.00
40.004.040.003.810.00
42.004.040.003.810.00
44.004.040.003.810.00
46.004.040.003.810.00
48.004.040.003.810.00
50.004.040.003.810.00
52.004.040.003.810.00
54.004.040.003.810.00
56.004.040.003.810.00
58.004.040.003.810.00
60.004.040.003.810.00
62.004.040.003.810.00
64.004.040.003.810.00
66.004.040.003.810.00
68.004.040.003.810.00
70.004.040.003.810.00
72.004.040.003.810.00
Page 94
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Analysis - Proposed Conditions NOAA 24-hr D 2 YR-F Rainfall=4.04" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 95
Summary for Pond 2P: Subsurface Infiltration Basin 1
Inflow Area = 73,567 sf, 27.76% Impervious, Inflow Depth = 0.85" for 2 YR-F event
Inflow = 0.42 cfs @ 12.09 hrs, Volume= 5,192 cf
Outflow = 0.42 cfs @ 12.09 hrs, Volume= 5,192 cf, Atten= 0%, Lag= 0.2 min
Discarded = 0.42 cfs @ 12.09 hrs, Volume= 5,192 cf
Primary = 0.00 cfs @ 0.00 hrs, Volume= 0 cf
Routed to Link 32L : POA1
Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs
Peak Elev= 87.01' @ 12.09 hrs Surf.Area= 2,475 sf Storage= 7 cf
Plug-Flow detention time= 0.3 min calculated for 5,192 cf (100% of inflow)
Center-of-Mass det. time= 0.3 min ( 952.0 - 951.7 )
Volume Invert Avail.Storage Storage Description
14,850 cf Overall - 3,979 cf Embedded = 10,871 cf x 40.0% Voids
Outside= 42.0"W x 42.0"H => 8.86 sf x 20.00'L = 177.2 cf
#1A 87.00' 4,349 cf 27.50'W x 90.00'L x 6.00'H Field A
#2A 87.50' 3,188 cf ADS N-12 36" x 20 Inside #1
Inside= 36.1"W x 36.1"H => 7.10 sf x 20.00'L = 142.0 cf
20 Chambers in 5 Rows
24.50' Header x 7.10 sf x 2 = 347.9 cf Inside
7,536 cf Total Available Storage
Storage Group A created with Chamber Wizard
Device Routing Invert Outlet Devices
#2 Device 1 88.00' 12.0" Round Culvert
#1 Primary 92.59' 48.0" x 48.0" Horiz. Grate C = 0.600
Limited to weir flow at low heads
L= 119.0' RCP, square edge headwall, Ke= 0.500
Inlet / Outlet Invert= 88.00' / 86.00' S= 0.0168 ' / Cc= 0.900
n= 0.012 Concrete pipe, finished, Flow Area= 0.79 sf
#3 Discarded 87.00' 10.000 in/hr Exfiltration over Surface area Phase-In= 0.01'
Discarded OutFlow Max=0.42 cfs @ 12.09 hrs HW=87.01' (Free Discharge)
3=Exfiltration (Exfiltration Controls 0.42 cfs)
Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=87.00' TW=0.00' (Dynamic Tailwater)
1=Grate ( Controls 0.00 cfs)
2=Culvert ( Controls 0.00 cfs)
Pond 2P: Subsurface Infiltration Basin 1
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Pond 2P: Subsurface Infiltration Basin 1 - Chamber Wizard Field A
Chamber Model = ADS N-12 36" (ADS N-12ยฎ Pipe) Inside= 36.1"W x 36.1"H => 7.10 sf x 20.00'L = 142.0 cf Outside= 42.0"W x 42.0"H => 8.86 sf x 20.00'L = 177.2 cf 42.0" Wide + 21.0" Spacing = 63.0" C-C Row Spacing 4 Chambers/Row x 20.00' Long +3.50' Header x 2 = 87.00' Row Length +18.0" End Stone x 2 = 90.00' Base Length 5 Rows x 42.0" Wide + 21.0" Spacing x 4 + 18.0" Side Stone x 2 = 27.50' Base Width 6.0" Stone Base + 42.0" Chamber Height + 24.0" Stone Cover = 6.00' Field Height 20 Chambers x 142.0 cf + 24.50' Header x 7.10 sf x 2 = 3,187.9 cf Chamber Storage 20 Chambers x 177.2 cf + 24.50' Header x 8.86 sf x 2 = 3,978.6 cf Displacement 14,850.0 cf Field - 3,978.6 cf Chambers = 10,871.4 cf Stone x 40.0% Voids = 4,348.5 cf Stone Storage Chamber Storage + Stone Storage = 7,536.4 cf = 0.173 af Overall Storage Efficiency = 50.8% Overall System Size = 90.00' x 27.50' x 6.00' 20 Chambers 550.0 cy Field 402.6 cy Stone
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 2P: Subsurface Infiltration Basin 1
Pond 2P: Subsurface Infiltration Basin 1
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Pond 2P: Subsurface Infiltration Basin 1
Stage-Area-Storage
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 2P: Subsurface Infiltration Basin 1
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Outflow (cfs)Discarded (cfs)Primary (cfs)
0.000.00087.000.000.000.00
2.000.00087.000.000.000.00
4.000.00087.000.000.000.00
6.000.00087.000.000.000.00
8.000.01087.000.010.010.00
10.000.01087.000.010.010.00
12.000.28587.000.270.270.00
14.000.17387.000.170.170.00
16.000.13287.000.130.130.00
18.000.09287.000.090.090.00
20.000.06187.000.060.060.00
22.000.04187.000.040.040.00
24.000.03187.000.030.030.00
26.000.01087.000.010.010.00
28.000.00087.000.000.000.00
30.000.00087.000.000.000.00
32.000.00087.000.000.000.00
34.000.00087.000.000.000.00
36.000.00087.000.000.000.00
38.000.00087.000.000.000.00
40.000.00087.000.000.000.00
42.000.00087.000.000.000.00
44.000.00087.000.000.000.00
46.000.00087.000.000.000.00
48.000.00087.000.000.000.00
50.000.00087.000.000.000.00
52.000.00087.000.000.000.00
54.000.00087.000.000.000.00
56.000.00087.000.000.000.00
58.000.00087.000.000.000.00
60.000.00087.000.000.000.00
62.000.00087.000.000.000.00
64.000.00087.000.000.000.00
66.000.00087.000.000.000.00
68.000.00087.000.000.000.00
70.000.00087.000.000.000.00
72.000.00087.000.000.000.00
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 2P: Subsurface Infiltration Basin 1
Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)
87.000.000.000.00
87.100.570.570.00
87.200.570.570.00
87.300.570.570.00
87.400.570.570.00
87.500.570.570.00
87.600.570.570.00
87.700.570.570.00
87.800.570.570.00
87.900.570.570.00
88.000.570.570.00
88.100.570.570.00
88.200.570.570.00
88.300.570.570.00
88.400.570.570.00
88.500.570.570.00
88.600.570.570.00
88.700.570.570.00
88.800.570.570.00
88.900.570.570.00
89.000.570.570.00
89.100.570.570.00
89.200.570.570.00
89.300.570.570.00
89.400.570.570.00
89.500.570.570.00
89.600.570.570.00
89.700.570.570.00
89.800.570.570.00
89.900.570.570.00
90.000.570.570.00
90.100.570.570.00
90.200.570.570.00
90.300.570.570.00
90.400.570.570.00
90.500.570.570.00
90.600.570.570.00
90.700.570.570.00
90.800.570.570.00
90.900.570.570.00
91.000.570.570.00
91.100.570.570.00
91.200.570.570.00
91.300.570.570.00
91.400.570.570.00
91.500.570.570.00
91.600.570.570.00
91.700.570.570.00
91.800.570.570.00
91.900.570.570.00
92.000.570.570.00
92.100.570.570.00
Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)
92.200.570.570.00
92.300.570.570.00
92.400.570.570.00
92.500.570.570.00
92.600.630.570.05
92.701.540.570.97
92.801.910.571.33
92.902.190.571.62
93.002.440.571.86
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Page 101
Stage-Area-Storage for Pond 2P: Subsurface Infiltration Basin 1
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
87.002,4750
87.102,47599
87.202,475198
87.302,475297
87.402,475396
87.502,475495
87.602,475581
87.702,475657
87.802,475739
87.902,475852
88.002,475980
88.102,4751,118
88.202,4751,264
88.302,4751,416
88.402,4751,573
88.502,4751,735
88.602,4751,900
88.702,4752,069
88.802,4752,240
88.902,4752,412
89.002,4752,587
89.102,4752,762
89.202,4752,938
89.302,4753,114
89.402,4753,290
89.502,4753,465
89.602,4753,639
89.702,4753,812
89.802,4753,983
89.902,4754,151
90.002,4754,316
90.102,4754,478
90.202,4754,636
90.302,4754,788
90.402,4754,934
90.502,4755,072
90.602,4755,200
90.702,4755,313
90.802,4755,395
90.902,4755,470
91.002,4755,556
91.102,4755,655
91.202,4755,754
91.302,4755,853
91.402,4755,952
91.502,4756,051
91.602,4756,150
91.702,4756,249
91.802,4756,348
91.902,4756,447
92.002,4756,546
92.102,4756,645
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
92.202,4756,744
92.302,4756,843
92.402,4756,942
92.502,4757,041
92.602,4757,140
92.702,4757,239
92.802,4757,338
92.902,4757,437
93.002,4757,536
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Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 5P: BIORETENTION BASIN 1A
Inflow Area = 70,567 sf, 24.69% Impervious, Inflow Depth = 0.98" for 2 YR-F event Inflow = 1.58 cfs @ 12.11 hrs, Volume = 5,747 cf Outflow = 0.17 cfs @ 12.89 hrs, Volume = 4,241 cf, Atten = 89%, Lag = 46.7 min Primary = 0.17 cfs @ 12.89 hrs, Volume = 4,241 cf Routed to Pond 2P : Subsurface Infiltration Basin 1
Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 92.21' @ 12.89 hrs Surf.Area= 1,500 sf Storage= 3,321 cf Plug-Flow detention time= 336.9 min calculated for 4,241 cf (74% of inflow) Center-of-Mass det. time= 229.7 min ( 997.3 - 767.6 )
VolumeInvertAvail.StorageStorage Description
#190.00'8,250 cfCustom Stage Data (Prismatic)Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
90.001,50000
95.501,5008,2508,250
DeviceRoutingInvertOutlet Devices
#1Device 391.00'2.5" Vert. Orifice C = 0.600 Limited to weir flow at low heads
#2Device 395.00'48.0" x 48.0" Horiz. Grate C = 0.600 Limited to weir flow at low heads
#3Primary87.48'12.0" Round Culvert\n L = 28.0' RCP, groove end projecting, Ke = 0.200\nInlet / Outlet Invert= $ 87.48'/87.00' $ S = 0.0171'/' Cc = 0.900\n n = 0.012 Concrete pipe, finished, Flow Area= $ 0.79sf $
Primary OutFlow Max=0.17 cfs @ 12.89 hrs HW=92.21' TW=87.00' (Dynamic Tailwater) 3=Culvert (Passes 0.17 cfs of 9.27 cfs potential flow) 1=Orifice (Orifice Controls 0.17 cfs @ 5.07 fps) 2=Grate ( Controls 0.00 cfs)
Pond 5P: BIORETENTION BASIN 1A Orifice
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Pond 5P: BIORETENTION BASIN 1A
Pond 5P: BIORETENTION BASIN 1A
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Pond 5P: BIORETENTION BASIN 1A
Stage-Area-Storage
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Analysis - Proposed Conditions NO Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LL
Hydrograph for Pond 5P: BIORETENTION BASIN 1A
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Primary (cfs)
0.000.00090.000.00
2.000.011690.010.00
4.000.0210990.070.00
6.000.0225990.170.00
8.000.0448590.320.00
10.000.0785390.570.00
12.000.932,19091.460.10
14.000.083,09292.060.16
16.000.052,50691.670.12
18.000.042,06391.380.09
20.000.031,81191.210.05
22.000.031,72291.150.03
24.000.021,69291.130.03
26.000.001,59591.060.01
28.000.001,56091.040.00
30.000.001,54491.030.00
32.000.001,53491.020.00
34.000.001,52891.020.00
36.000.001,52491.020.00
38.000.001,52191.010.00
40.000.001,51891.010.00
42.000.001,51691.010.00
44.000.001,51591.010.00
46.000.001,51391.010.00
48.000.001,51291.010.00
50.000.001,51191.010.00
52.000.001,51191.010.00
54.000.001,51091.010.00
56.000.001,50991.010.00
58.000.001,50991.010.00
60.000.001,50891.010.00
62.000.001,50891.010.00
64.000.001,50791.000.00
66.000.001,50791.000.00
68.000.001,50791.000.00
70.000.001,50691.000.00
72.000.001,50691.000.00
Page 105
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Stage-Discharge for Pond 5P: BIORETENTION BASIN 1A
Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)
90.000.0092.600.20
90.050.0092.650.20
90.100.0092.700.21
90.150.0092.750.21
90.200.0092.800.21
90.250.0092.850.22
90.300.0092.900.22
90.350.0092.950.22
90.400.0093.000.23
90.450.0093.050.23
90.500.0093.100.23
90.550.0093.150.23
90.600.0093.200.24
90.650.0093.250.24
90.700.0093.300.24
90.750.0093.350.25
90.800.0093.400.25
90.850.0093.450.25
90.900.0093.500.25
90.950.0093.550.26
91.000.0093.600.26
91.050.0093.650.26
91.100.0293.700.26
91.150.0393.750.27
91.200.0593.800.27
91.250.0693.850.27
91.300.0793.900.27
91.350.0893.950.28
91.400.0994.000.28
91.450.1094.050.28
91.500.1094.100.28
91.550.1194.150.29
91.600.1294.200.29
91.650.1294.250.29
91.700.1394.300.29
91.750.1394.350.30
91.800.1494.400.30
91.850.1494.450.30
91.900.1594.500.30
91.950.1594.550.30
92.000.1694.600.31
92.050.1694.650.31
92.100.1694.700.31
92.150.1794.750.31
92.200.1794.800.32
92.250.1894.850.32
92.300.1894.900.32
92.350.1894.950.32
92.400.1995.000.32
92.450.1995.050.91
92.500.1995.101.98
92.550.2095.153.37
Elevation (feet)Primary (cfs)
95.205.01
95.256.87
95.308.93
95.3511.17
95.4012.28
95.4512.32
95.5012.36
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Area-Storage for Pond 5P: BIORETENTION BASIN 1A
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
90.001,5000
90.101,500150
90.201,500300
90.301,500450
90.401,500600
90.501,500750
90.601,500900
90.701,5001,050
90.801,5001,200
90.901,5001,350
91.001,5001,500
91.101,5001,650
91.201,5001,800
91.301,5001,950
91.401,5002,100
91.501,5002,250
91.601,5002,400
91.701,5002,550
91.801,5002,700
91.901,5002,850
92.001,5003,000
92.101,5003,150
92.201,5003,300
92.301,5003,450
92.401,5003,600
92.501,5003,750
92.601,5003,900
92.701,5004,050
92.801,5004,200
92.901,5004,350
93.001,5004,500
93.101,5004,650
93.201,5004,800
93.301,5004,950
93.401,5005,100
93.501,5005,250
93.601,5005,400
93.701,5005,550
93.801,5005,700
93.901,5005,850
94.001,5006,000
94.101,5006,150
94.201,5006,300
94.301,5006,450
94.401,5006,600
94.501,5006,750
94.601,5006,900
94.701,5007,050
94.801,5007,200
94.901,5007,350
95.001,5007,500
95.101,5007,650
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
95.201,5007,800
95.301,5007,950
95.401,5008,100
95.501,5008,250
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Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 6P: BIORENTION BASIN 2A Inflow Area = 18,731 sf, 0.00% Impervious, Inflow Depth = 0.05" for 2 YR-F event Inflow = 0.00 cfs @ 16.97 hrs, Volume= 78 cf Outflow = 0.00 cfs @ 22.07 hrs, Volume= 32 cf, Atten=4%, Lag=306.0 min Primary = 0.00 cfs @ 22.07 hrs, Volume= 32 cf Routed to Pond 33P : INFILTRATION BASIN 2 Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 94.83' @ 22.07 hrs Surf.Area= 128 sf Storage= 51 cf Plug-Flow detention time= 395.8 min calculated for 32 cf (40% of inflow) Center-of-Mass det. time= 219.4 min (1,374.5 - 1,155.1)
VolumeInvertAvail.StorageStorage Description
#194.30'307 cfCustom Stage Data (Prismatic)Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
94.306300
95.001487474
96.00319234307
DeviceRoutingInvertOutlet Devices
#1Device 394.80'2.5" Vert. Orifice C= 0.600 Limited to weir flow at low heads
#2Device 395.50'48.0" x 48.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads
#3Primary91.80'12.0" Round Culvert L= 30.0' RCP, groove end projecting, Ke= 0.200 Inlet / Outlet Invert= 91.80' / 91.65' S= 0.0050 '/ Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 0.79 sf
Primary OutFlow Max=0.00 cfs @ 22.07 hrs HW=94.83' TW=91.65' (Dynamic Tailwater) 3=Culvert (Passes 0.00 cfs of 6.58 cfs potential flow) 1=Orifice (Orifice Controls 0.00 cfs @ 0.62 fps) 2=Grate ( Controls 0.00 cfs)
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Pond 6P: BIORENTION BASIN 2A
Pond 6P: BIORENTION BASIN 2A
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Pond 6P: BIORENTION BASIN 2A
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Analysis - Proposed Conditions NO Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 6P: BIORENTION BASIN 2A
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Primary (cfs)
0.000.00094.300.00
2.000.00094.300.00
4.000.00094.300.00
6.000.00094.300.00
8.000.00094.300.00
10.000.00094.300.00
12.000.00094.300.00
14.000.00194.310.00
16.000.001394.470.00
18.000.002994.650.00
20.000.004594.790.00
22.000.005194.830.00
24.000.005194.830.00
26.000.004894.810.00
28.000.004794.800.00
30.000.004794.800.00
32.000.004794.800.00
34.000.004794.800.00
36.000.004794.800.00
38.000.004794.800.00
40.000.004794.800.00
42.000.004794.800.00
44.000.004794.800.00
46.000.004794.800.00
48.000.004794.800.00
50.000.004794.800.00
52.000.004794.800.00
54.000.004794.800.00
56.000.004794.800.00
58.000.004794.800.00
60.000.004794.800.00
62.000.004794.800.00
64.000.004794.800.00
66.000.004794.800.00
68.000.004794.800.00
70.000.004794.800.00
72.000.004794.800.00
Page 111
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Stage-Discharge for Pond 6P: BIORENTION BASIN 2A
Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)
94.300.0094.820.0095.340.11
94.310.0094.830.0095.350.11
94.320.0094.840.0095.360.11
94.330.0094.850.0095.370.11
94.340.0094.860.0195.380.11
94.350.0094.870.0195.390.11
94.360.0094.880.0195.400.12
94.370.0094.890.0195.410.12
94.380.0094.900.0295.420.12
94.390.0094.910.0295.430.12
94.400.0094.920.0295.440.12
94.410.0094.930.0395.450.12
94.420.0094.940.0395.460.12
94.430.0094.950.0395.470.12
94.440.0094.960.0495.480.12
94.450.0094.970.0495.490.13
94.460.0094.980.0595.500.13
94.470.0094.990.0595.510.18
94.480.0095.000.0595.520.28
94.490.0095.010.0595.530.40
94.500.0095.020.0695.540.55
94.510.0095.030.0695.550.72
94.520.0095.040.0695.560.90
94.530.0095.050.0695.571.10
94.540.0095.060.0695.581.32
94.550.0095.070.0795.591.55
94.560.0095.080.0795.601.79
94.570.0095.090.0795.612.05
94.580.0095.100.0795.622.31
94.590.0095.110.0795.632.59
94.600.0095.120.0895.642.88
94.610.0095.130.0895.653.18
94.620.0095.140.0895.663.49
94.630.0095.150.0895.673.81
94.640.0095.160.0895.684.14
94.650.0095.170.0895.694.48
94.660.0095.180.0995.704.83
94.670.0095.190.0995.715.18
94.680.0095.200.0995.725.55
94.690.0095.210.0995.735.92
94.700.0095.220.0995.746.30
94.710.0095.230.0995.756.69
94.720.0095.240.1095.767.09
94.730.0095.250.1095.777.49
94.740.0095.260.1095.787.88
94.750.0095.270.1095.797.89
94.760.0095.280.1095.807.90
94.770.0095.290.1095.817.92
94.780.0095.300.1095.827.93
94.790.0095.310.1095.837.94
94.800.0095.320.1195.847.95
94.810.0095.330.1195.857.97
Elevation (feet)Primary (cfs)
95.867.98
95.877.99
95.888.00
95.898.02
95.908.03
95.918.04
95.928.05
95.938.07
95.948.08
95.958.09
95.968.10
95.978.12
95.988.13
95.998.14
96.008.15
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Page 113
Stage-Area-Storage for Pond 6P: BIORENTION BASIN 2A
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
94.3063095.34206134
94.3265195.36210138
94.3468395.38213142
94.3670495.40216147
94.3873595.42220151
94.4075795.44223156
94.4278895.46227160
94.44801095.48230165
94.46821295.50234169
94.48851395.52237174
94.50871595.54240179
94.52901795.56244184
94.54921995.58247188
94.56952095.60251193
94.58972295.62254198
94.60992495.64257204
94.621022695.66261209
94.641042895.68264214
94.661073195.70268219
94.681093395.72271225
94.701123595.74275230
94.721143795.76278236
94.741163995.78281241
94.761194295.80285247
94.781214495.82288253
94.801244795.84292258
94.821264995.86295264
94.841295295.88298270
94.861315495.90302276
94.881335795.92305282
94.901366095.94309289
94.921386295.96312295
94.941416595.98316301
94.961436896.00319307
94.9814671
95.0014874
95.0215177
95.0415580
95.0615883
95.0816286
95.1016590
95.1216993
95.1417296
95.16175100
95.18179103
95.20182107
95.22186111
95.24189114
95.26192118
95.28196122
95.30199126
95.32203130
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Page 114
Summary for Pond 8P: INFILTRATION BASIN 3
Inflow Area = 38,333 sf, 22.73% Impervious, Inflow Depth = 0.87" for 2 YR-F event
Inflow = 0.27 cfs @ 12.33 hrs, Volume= 2,783 cf
Outflow = 0.27 cfs @ 12.40 hrs, Volume= 2,783 cf, Atten= 3%, Lag= 4.3 min
Discarded = 0.27 cfs @ 12.40 hrs, Volume= 2,783 cf
Primary = 0.00 cfs @ 0.00 hrs, Volume= 0 cf
Routed to Link 34L : POA 3
Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs
Peak Elev= 90.76' @ 12.36 hrs Surf.Area= 1,150 sf Storage= 13 cf
Plug-Flow detention time= 0.7 min calculated for 2,783 cf (100% of inflow)
Center-of-Mass det. time= 0.7 min ( 860.0 - 859.3 )
Volume Invert Avail.Storage Storage Description
#1 90.75' 4,888 cf Custom Stage Data (Prismatic)Listed below (Recalc)
Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet)
90.75 1,150 0 0 95.00 1,150 4,888 4,888
Device Routing Invert Outlet Devices
#1 Device 3 92.75' 2.5" Vert. Orifice C= 0.600 Limited to weir flow at low heads
Inlet / Outlet Invert= 92.75' / 92.65' S= 0.0143'/' Cc= 0.900
#2 Device 3 94.50' 48.0" x 48.0" Horiz. Grate C= 0.600
#3 Primary 92.75' 12.0" Round Culvert L= 7.0' RCP, groove end projecting, Ke= 0.200
n= 0.012 Concrete pipe, finished, Flow Area= 0.79 sf
#4 Discarded 90.75' 10.000 in/hr Exfiltration over Surface area Phase-In= 0.01'
Discarded OutFlow Max=0.27 cfs @ 12.40 hrs HW=90.76' (Free Discharge)
4=Exfiltration (Exfiltration Controls 0.27 cfs)
Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=90.75' TW=0.00' (Dynamic Tailwater)
3=Culvert ( Controls 0.00 cfs)
1=Orifice ( Controls 0.00 cfs)
2=Grate ( Controls 0.00 cfs)
Pond 8P: INFILTRATION BASIN 3
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Pond 8P: INFILTRATION BASIN 3
Pond 8P: INFILTRATION BASIN 3
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NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 12/19/2025
2 YR-F Rainfall=4.04" Printed 12/19/2025 Page 116
Pond 8P: INFILTRATION BASIN 3
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Page 117
Hydrograph for Pond 8P: INFILTRATION BASIN 3
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Outflow (cfs)Discarded (cfs)Primary (cfs)
0.000.00090.750.000.000.00
2.000.00090.750.000.000.00
4.000.00090.750.000.000.00
6.000.01090.750.010.010.00
8.000.01190.750.010.010.00
10.000.03190.750.030.030.00
12.000.09490.750.090.090.00
14.000.10490.750.100.100.00
16.000.05290.750.050.050.00
18.000.02190.750.020.020.00
20.000.01190.750.010.010.00
22.000.01190.750.010.010.00
24.000.01190.750.010.010.00
26.000.00090.750.000.000.00
28.000.00090.750.000.000.00
30.000.00090.750.000.000.00
32.000.00090.750.000.000.00
34.000.00090.750.000.000.00
36.000.00090.750.000.000.00
38.000.00090.750.000.000.00
40.000.00090.750.000.000.00
42.000.00090.750.000.000.00
44.000.00090.750.000.000.00
46.000.00090.750.000.000.00
48.000.00090.750.000.000.00
50.000.00090.750.000.000.00
52.000.00090.750.000.000.00
54.000.00090.750.000.000.00
56.000.00090.750.000.000.00
58.000.00090.750.000.000.00
60.000.00090.750.000.000.00
62.000.00090.750.000.000.00
64.000.00090.750.000.000.00
66.000.00090.750.000.000.00
68.000.00090.750.000.000.00
70.000.00090.750.000.000.00
72.000.00090.750.000.000.00
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Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 8P: INFILTRATION BASIN 3
Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)
90.750.000.000.0093.350.380.270.12
90.800.270.270.0093.400.390.270.12
90.850.270.270.0093.450.390.270.13
90.900.270.270.0093.500.400.270.13
90.950.270.270.0093.550.400.270.14
91.000.270.270.0093.600.410.270.14
91.050.270.270.0093.650.410.270.15
91.100.270.270.0093.700.420.270.15
91.150.270.270.0093.750.420.270.16
91.200.270.270.0093.800.430.270.16
91.250.270.270.0093.850.430.270.16
91.300.270.270.0093.900.430.270.17
91.350.270.270.0093.950.440.270.17
91.400.270.270.0094.000.440.270.18
91.450.270.270.0094.050.450.270.18
91.500.270.270.0094.100.450.270.18
91.550.270.270.0094.150.450.270.19
91.600.270.270.0094.200.460.270.19
91.650.270.270.0094.250.460.270.19
91.700.270.270.0094.300.460.270.20
91.750.270.270.0094.350.470.270.20
91.800.270.270.0094.400.470.270.20
91.850.270.270.0094.450.470.270.21
91.900.270.270.0094.500.480.270.21
91.950.270.270.0094.551.060.270.80
92.000.270.270.0094.602.140.271.87
92.050.270.270.0094.653.530.273.26
92.100.270.270.0094.705.170.274.90
92.150.270.270.0094.755.880.275.61
92.200.270.270.0094.806.000.275.74
92.250.270.270.0094.856.130.275.86
92.300.270.270.0094.906.250.275.98
92.350.270.270.0094.956.370.276.10
92.400.270.270.0095.006.480.276.22
92.450.270.270.00
92.500.270.270.00
92.550.270.270.00
92.600.270.270.00
92.650.270.270.00
92.700.270.270.00
92.750.270.270.00
92.800.270.270.00
92.850.280.270.02
92.900.300.270.03
92.950.320.270.05
93.000.330.270.06
93.050.340.270.07
93.100.350.270.08
93.150.360.270.09
93.200.360.270.10
93.250.370.270.10
93.300.380.270.11
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NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 12/19/2025
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Page 119
Stage-Area-Storage for Pond 8P: INFILTRATION BASIN 3
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
90.751,150093.351,1502,990
90.801,1505793.401,1503,048
90.851,15011593.451,1503,105
90.901,15017393.501,1503,163
90.951,15023093.551,1503,220
91.001,15028893.601,1503,277
91.051,15034593.651,1503,335
91.101,15040293.701,1503,393
91.151,15046093.751,1503,450
91.201,15051893.801,1503,507
91.251,15057593.851,1503,565
91.301,15063293.901,1503,623
91.351,15069093.951,1503,680
91.401,15074894.001,1503,738
91.451,15080594.051,1503,795
91.501,15086394.101,1503,852
91.551,15092094.151,1503,910
91.601,15097794.201,1503,968
91.651,1501,03594.251,1504,025
91.701,1501,09394.301,1504,082
91.751,1501,15094.351,1504,140
91.801,1501,20794.401,1504,198
91.851,1501,26594.451,1504,255
91.901,1501,32394.501,1504,313
91.951,1501,38094.551,1504,370
92.001,1501,43894.601,1504,427
92.051,1501,49594.651,1504,485
92.101,1501,55294.701,1504,543
92.151,1501,61094.751,1504,600
92.201,1501,66894.801,1504,657
92.251,1501,72594.851,1504,715
92.301,1501,78294.901,1504,773
92.351,1501,84094.951,1504,830
92.401,1501,89895.001,1504,888
92.451,1501,955
92.501,1502,013
92.551,1502,070
92.601,1502,127
92.651,1502,185
92.701,1502,243
92.751,1502,300
92.801,1502,357
92.851,1502,415
92.901,1502,473
92.951,1502,530
93.001,1502,588
93.051,1502,645
93.101,1502,702
93.151,1502,760
93.201,1502,818
93.251,1502,875
93.301,1502,932
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Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 10P: PERVIOUS PAVEMENT 2B
Inflow Area = 8,276 sf,100.00% Impervious, Inflow Depth = 3.81" for 2 YR-F event Inflow = 0.66 cfs @ 12.12 hrs, Volume= 2,624 cf Outflow = 0.19 cfs @ 12.40 hrs, Volume= 2,620 cf, Atten= 71%, Lag= 16.6 min Primary = 0.19 cfs @ 12.40 hrs, Volume= 2,620 cf Routed to Pond 33P : INFILTRATION BASIN 2 Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 94.81' @ 12.40 hrs Surf.Area= 9,225 sf Storage= 870 cf Plug-Flow detention time= 106.5 min calculated for 2,620 cf (100% of inflow) Center-of-Mass det. time= 105.8 min ( 860.2 - 754.4 )
VolumeInvertAvail.StorageStorage Description
#193.80'615 cfStone Storage Bed (Prismatic)Listed below (Recalc)1,538 cf Overall ร— 40.0% Voids
#294.30'231 cfSurface and Base Course (Prismatic)Listed below (Recalc)1,538 cf Overall ร— 15.0% Voids
#394.80'1,538 cfSurface (Prismatic)Listed below (Recalc)
2,383 cfTotal Available Storage
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
93.803,07500
94.303,0751,5381,538
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
94.303,07500
94.803,0751,5381,538
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
94.803,07500
95.303,0751,5381,538
DeviceRoutingInvertOutlet Devices
#1Device 393.80'2.5" Vert. Orifice C = 0.600
#2Device 394.80'48.0" x 48.0" Horiz. Grate C = 0.600
#3Primary92.08'12.0" Round Culvert L = 38.0' RCP, groove end projecting, Ke = 0.200Inlet / Outlet Invert= $ 92.08'/91.65' $ S = 0.0113'/' Cc = 0.900n=0.011, Flow Area=0.79 sf
Primary OutFlow Max=0.19 cfs @ 12.40 hrs HW=94.81' TW=91.87' (Dynamic Tailwater) 3=Culvert (Passes 0.19 cfs of 6.46 cfs potential flow) 1=Orifice (Orifice Controls 0.16 cfs @ 4.58 fps) 2=Grate (Weir Controls 0.04 cfs @ 0.29 fps)
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Page 121
Pond 10P: PERVIOUS PAVEMENT 2B
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Pond 10P: PERVIOUS PAVEMENT 2B
Pond 10P: PERVIOUS PAVEMENT 2B
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Hydrograph for Pond 10P: PERVIOUS PAVEMENT 2B
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Primary (cfs)
0.000.00093.800.00
2.000.00793.810.00
4.000.014493.840.00
6.000.017893.860.01
8.000.0210993.890.01
10.000.0315093.920.02
12.000.3845894.170.09
14.000.0454594.240.10
16.000.0222993.990.05
18.000.0113593.910.02
20.000.0110993.890.01
22.000.019893.880.01
24.000.018993.870.01
26.000.005093.840.00
28.000.003493.830.00
30.000.002693.820.00
32.000.002193.820.00
34.000.001793.810.00
36.000.001593.810.00
38.000.001393.810.00
40.000.001193.810.00
42.000.001093.810.00
44.000.00993.810.00
46.000.00993.810.00
48.000.00893.810.00
50.000.00793.810.00
52.000.00793.810.00
54.000.00693.810.00
56.000.00693.800.00
58.000.00693.800.00
60.000.00593.800.00
62.000.00593.800.00
64.000.00593.800.00
66.000.00593.800.00
68.000.00493.800.00
70.000.00493.800.00
72.000.00493.800.00
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Page 124
Stage-Discharge for Pond 10P: PERVIOUS PAVEMENT 2B
Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)
93.800.0094.320.1194.840.58
93.810.0094.330.1194.850.74
93.820.0094.340.1194.860.93
93.830.0094.350.1194.871.13
93.840.0094.360.1194.881.35
93.850.0094.370.1194.891.58
93.860.0194.380.1194.901.82
93.870.0194.390.1194.912.07
93.880.0194.400.1294.922.34
93.890.0194.410.1294.932.62
93.900.0294.420.1294.942.91
93.910.0294.430.1294.953.21
93.920.0294.440.1294.963.52
93.930.0394.450.1294.973.84
93.940.0394.460.1294.984.17
93.950.0394.470.1294.994.50
93.960.0494.480.1295.004.85
93.970.0494.490.1395.015.21
93.980.0594.500.1395.025.57
93.990.0594.510.1395.035.95
94.000.0594.520.1395.046.33
94.010.0594.530.1395.056.72
94.020.0694.540.1395.066.83
94.030.0694.550.1395.076.84
94.040.0694.560.1395.086.86
94.050.0694.570.1395.096.87
94.060.0694.580.1395.106.88
94.070.0794.590.1495.116.90
94.080.0794.600.1495.126.91
94.090.0794.610.1495.136.93
94.100.0794.620.1495.146.94
94.110.0794.630.1495.156.95
94.120.0894.640.1495.166.97
94.130.0894.650.1495.176.98
94.140.0894.660.1495.186.99
94.150.0894.670.1495.197.01
94.160.0894.680.1495.207.02
94.170.0894.690.1595.217.04
94.180.0994.700.1595.227.05
94.190.0994.710.1595.237.06
94.200.0994.720.1595.247.08
94.210.0994.730.1595.257.09
94.220.0994.740.1595.267.10
94.230.0994.750.1595.277.12
94.240.1094.760.1595.287.13
94.250.1094.770.1595.297.15
94.260.1094.780.1595.307.16
94.270.1094.790.15
94.280.1094.800.16
94.290.1094.810.21
94.300.1094.820.31
94.310.1094.830.43
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NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 12/19/2025
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Printed 12/19/2025 Page 125
Stage-Area-Storage for Pond 10P: PERVIOUS PAVEMENT 2B
Elevation (feet)Storage (cubic-feet)Elevation (feet)Storage (cubic-feet)Elevation (feet)Storage (cubic-feet)
93.80094.3262494.84969
93.811294.3362994.85999
93.822594.3463394.861,030
93.833794.3563894.871,061
93.844994.3664394.881,092
93.856194.3764794.891,122
93.867494.3865294.901,153
93.878694.3965794.911,184
93.889894.4066194.921,215
93.8911194.4166694.931,245
93.9012394.4267094.941,276
93.9113594.4367594.951,307
93.9214894.4468094.961,338
93.9316094.4568494.971,368
93.9417294.4668994.981,399
93.9518594.4769394.991,430
93.9619794.4869895.001,461
93.9720994.4970395.011,491
93.9822194.5070795.021,522
93.9923494.5171295.031,553
94.0024694.5271695.041,584
94.0125894.5372195.051,614
94.0227194.5472695.061,645
94.0328394.5573095.071,676
94.0429594.5673595.081,707
94.0530894.5774095.091,737
94.0632094.5874495.101,768
94.0733294.5974995.111,799
94.0834494.6075395.121,830
94.0935794.6175895.131,860
94.1036994.6276395.141,891
94.1138194.6376795.151,922
94.1239494.6477295.161,953
94.1340694.6577695.171,983
94.1441894.6678195.182,014
94.1543094.6778695.192,045
94.1644394.6879095.202,076
94.1745594.6979595.212,106
94.1846794.7080095.222,137
94.1948094.7180495.232,168
94.2049294.7280995.242,199
94.2150494.7381395.252,229
94.2251794.7481895.262,260
94.2352994.7582395.272,291
94.2454194.7682795.282,322
94.2555494.7783295.292,352
94.2656694.7883695.302,383
94.2757894.79841
94.2859094.80846
94.2960394.81876
94.3061594.82907
94.3162094.83938
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Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 15P: PERVIOUS PAVEMENT 3B
Inflow Area = 8,712 sf,100.00% Impervious, Inflow Depth = 3.81" for 2 YR-F event Inflow = 0.70 cfs @ 12.12 hrs, Volume= 2,762 cf Outflow = 0.27 cfs @ 12.33 hrs, Volume= 2,759 cf, Atten= 61%, Lag= 12.3 min Primary = 0.27 cfs @ 12.33 hrs, Volume= 2,759 cf Routed to Pond 8P : INFILTRATION BASIN 3 Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 94.82' @ 12.33 hrs Surf.Area= 8,889 sf Storage= 866 cf Plug-Flow detention time= 99.5 min calculated for 2,758 cf (100% of inflow) Center-of-Mass det. time= 98.9 min ( 853.3 - 754.4 )
VolumeInvertAvail.StorageStorage Description
#193.80'593 cfStone Storage Bed (Prismatic)Listed below (Recalc) 1,482 cf Overall ร— 40.0% Voids
#294.30'222 cfSurface and Base Course (Prismatic)Listed below (Recalc) 1,482 cf Overall ร— 15.0% Voids
#394.80'1,482 cfSurface (Prismatic)Listed below (Recalc)
2,296 cfTotal Available Storage
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
93.802,96300
94.302,9631,4821,482
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
94.302,96300
94.802,9631,4821,482
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
94.802,96300
95.302,9631,4821,482
DeviceRoutingInvertOutlet Devices
#1Device 393.80'2.5" Vert. Orifice C = 0.600
#2Device 394.80'48.0" x 48.0" Horiz. Grate C = 0.600
#3Primary92.00'12.0" Round Culvert L = 52.0' RCP, groove end projecting, Ke = 0.200Inlet / Outlet Invert= $ 92.00'/90.75' $ S = 0.0240'/ Cc = 0.900n=0.011, Flow Area=0.79 sf
Primary OutFlow Max=0.27 cfs @ 12.33 hrs HW=94.82' TW=90.76' (Dynamic Tailwater) 3=Culvert (Passes 0.27 cfs of 7.17 cfs potential flow) 1=Orifice (Orifice Controls 0.16 cfs @ 4.60 fps) 2=Grate (Weir Controls 0.12 cfs @ 0.43 fps)
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Pond 15P: PERVIOUS PAVEMENT 3B
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Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 15P: PERVIOUS PAVEMENT 3B
Pond 15P: PERVIOUS PAVEMENT 3B
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Analysis - Proposed Conditions NO Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LL
Hydrograph for Pond 15P: PERVIOUS PAVEMENT 3B
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Primary (cfs)
0.000.00093.800.00
2.000.00793.810.00
4.000.014593.840.00
6.000.017993.870.01
8.000.0210993.890.01
10.000.0415093.930.03
12.000.4047394.200.09
14.000.0452994.250.10
16.000.0222293.990.05
18.000.0113193.910.02
20.000.0110793.890.01
22.000.019693.880.01
24.000.018893.870.01
26.000.004893.840.00
28.000.003393.830.00
30.000.002493.820.00
32.000.001993.820.00
34.000.001693.810.00
36.000.001493.810.00
38.000.001293.810.00
40.000.001193.810.00
42.000.001093.810.00
44.000.00993.810.00
46.000.00893.810.00
48.000.00793.810.00
50.000.00793.810.00
52.000.00693.810.00
54.000.00693.810.00
56.000.00693.800.00
58.000.00593.800.00
60.000.00593.800.00
62.000.00593.800.00
64.000.00593.800.00
66.000.00493.800.00
68.000.00493.800.00
70.000.00493.800.00
72.000.00493.800.00
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 15P: PERVIOUS PAVEMENT 3B
Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)
93.800.0094.320.1194.840.58
93.810.0094.330.1194.850.74
93.820.0094.340.1194.860.93
93.830.0094.350.1194.871.13
93.840.0094.360.1194.881.35
93.850.0094.370.1194.891.58
93.860.0194.380.1194.901.82
93.870.0194.390.1194.912.07
93.880.0194.400.1294.922.34
93.890.0194.410.1294.932.62
93.900.0294.420.1294.942.91
93.910.0294.430.1294.953.21
93.920.0294.440.1294.963.52
93.930.0394.450.1294.973.84
93.940.0394.460.1294.984.17
93.950.0394.470.1294.994.50
93.960.0494.480.1295.004.85
93.970.0494.490.1395.015.21
93.980.0594.500.1395.025.57
93.990.0594.510.1395.035.95
94.000.0594.520.1395.046.33
94.010.0594.530.1395.056.72
94.020.0694.540.1395.067.11
94.030.0694.550.1395.077.46
94.040.0694.560.1395.087.47
94.050.0694.570.1395.097.48
94.060.0694.580.1395.107.50
94.070.0794.590.1495.117.51
94.080.0794.600.1495.127.52
94.090.0794.610.1495.137.53
94.100.0794.620.1495.147.54
94.110.0794.630.1495.157.55
94.120.0894.640.1495.167.56
94.130.0894.650.1495.177.57
94.140.0894.660.1495.187.58
94.150.0894.670.1495.197.60
94.160.0894.680.1495.207.61
94.170.0894.690.1595.217.62
94.180.0994.700.1595.227.63
94.190.0994.710.1595.237.64
94.200.0994.720.1595.247.65
94.210.0994.730.1595.257.66
94.220.0994.740.1595.267.67
94.230.0994.750.1595.277.68
94.240.1094.760.1595.287.69
94.250.1094.770.1595.297.70
94.260.1094.780.1595.307.72
94.270.1094.790.15
94.280.1094.800.16
94.290.1094.810.21
94.300.1094.820.31
94.310.1094.830.43
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Printed 12/19/2025 Page 131
Stage-Area-Storage for Pond 15P: PERVIOUS PAVEMENT 3B
Elevation (feet)Storage (cubic-feet)Elevation (feet)Storage (cubic-feet)Elevation (feet)Storage (cubic-feet)
93.80094.3260194.84933
93.811294.3360694.85963
93.822494.3461094.86993
93.833694.3561594.871,022
93.844794.3661994.881,052
93.855994.3762494.891,081
93.867194.3862894.901,111
93.878394.3963394.911,141
93.889594.4063794.921,170
93.8910794.4164194.931,200
93.9011994.4264694.941,230
93.9113094.4365094.951,259
93.9214294.4465594.961,289
93.9315494.4565994.971,319
93.9416694.4666494.981,348
93.9517894.4766894.991,378
93.9619094.4867395.001,407
93.9720194.4967795.011,437
93.9821394.5068195.021,467
93.9922594.5168695.031,496
94.0023794.5269095.041,526
94.0124994.5369595.051,556
94.0226194.5469995.061,585
94.0327394.5570495.071,615
94.0428494.5670895.081,644
94.0529694.5771395.091,674
94.0630894.5871795.101,704
94.0732094.5972195.111,733
94.0833294.6072695.121,763
94.0934494.6173095.131,793
94.1035694.6273595.141,822
94.1136794.6373995.151,852
94.1237994.6474495.161,882
94.1339194.6574895.171,911
94.1440394.6675395.181,941
94.1541594.6775795.191,970
94.1642794.6876195.202,000
94.1743994.6976695.212,030
94.1845094.7077095.222,059
94.1946294.7177595.232,089
94.2047494.7277995.242,119
94.2148694.7378495.252,148
94.2249894.7478895.262,178
94.2351094.7579395.272,207
94.2452194.7679795.282,237
94.2553394.7780195.292,267
94.2654594.7880695.302,296
94.2755794.79810
94.2856994.80815
94.2958194.81844
94.3059394.82874
94.3159794.83904
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Analysis - Proposed Conditions NOAA 24-hr D 2 YR-F Rainfall=4.04" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 132
Summary for Pond 33P: INFILTRATION BASIN 2
Inflow Area =27,007 sf,30.65% Impervious,Inflow Depth > 1.18"for 2 YR-F event
Inflow =0.19 cfs @12.40 hrs,Volume= 2,652 cf
Outflow =0.09 cfs @14.27 hrs,Volume= 2,652 cfAtten= 54%, Lag= 112.4 min
Discarded =0.09 cfs @14.27 hrs,Volume= 2,652 cf
Primary =0.00 cfs @0.00 hrs,Volume= 0 cf
Routed to Link 33L : POA 2
Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 92.28' @ 14.27 hrs Surf.Area= 777 sf Storage= 408 cf
Plug-Flow detention time=36.2 min calculated for 2,652 cf (100% of inflow) Center-of-Mass det. time=36.2 min (902.5 - 866.3)
VolumeInvertAvail.StorageStorage Description
#191.65'4,378 cfCustom Stage Data (Prismatic)Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
91.6552000
92.00651205205
93.001,0948731,077
94.001,6291,3622,439
95.002,2491,9394,378
DeviceRoutingInvertOutlet Devices
#1Device 393.65'2.5" Vert. Orifice C= 0.600 Limited to weir flow at low heads
#2Device 394.70'48.0" x 48.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads
#3Primary93.65'12.0" Round Culvert L= 17.0' RCP, groove end projecting, Ke= 0.200 Inlet / Outlet Invert= 93.65' / 93.50' S= 0.0088 ' /' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 0.79 sf
#4Discarded91.65'4.950 in/hr Exfiltration over Surface area Phase-In= 0.01'
Discarded OutFlow Max=0.09 cfs @ 14.27 hrs HW=92.28' (Free Discharge) 4=Exfiltration (Exfiltration Controls 0.09 cfs)
Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=91.65' TW=0.00' (Dynamic Tailwater) 3=Culvert ( Controls 0.00 cfs) 1=Orifice ( Controls 0.00 cfs) 2=Grate ( Controls 0.00 cfs)
Pond 33P: INFILTRATION BASIN 2 Grate Curvient
Exfiltration
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Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 33P: INFILTRATION BASIN 2
Pond 33P: INFILTRATION BASIN 2
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Pond 33P: INFILTRATION BASIN 2
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Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 33P: INFILTRATION BASIN 2
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Outflow (cfs)Discarded (cfs)Primary (cfs)
0.000.00091.650.000.000.00
2.000.00091.650.000.000.00
4.000.00091.650.000.000.00
6.000.01191.650.010.010.00
8.000.01191.650.010.010.00
10.000.02291.650.020.020.00
12.000.091791.680.060.060.00
14.000.1040592.280.090.090.00
16.000.0529392.130.080.080.00
18.000.02491.660.040.040.00
20.000.01191.650.010.010.00
22.000.01191.650.010.010.00
24.000.01191.650.010.010.00
26.000.00091.650.000.000.00
28.000.00091.650.000.000.00
30.000.00091.650.000.000.00
32.000.00091.650.000.000.00
34.000.00091.650.000.000.00
36.000.00091.650.000.000.00
38.000.00091.650.000.000.00
40.000.00091.650.000.000.00
42.000.00091.650.000.000.00
44.000.00091.650.000.000.00
46.000.00091.650.000.000.00
48.000.00091.650.000.000.00
50.000.00091.650.000.000.00
52.000.00091.650.000.000.00
54.000.00091.650.000.000.00
56.000.00091.650.000.000.00
58.000.00091.650.000.000.00
60.000.00091.650.000.000.00
62.000.00091.650.000.000.00
64.000.00091.650.000.000.00
66.000.00091.650.000.000.00
68.000.00091.650.000.000.00
70.000.00091.650.000.000.00
72.000.00091.650.000.000.00
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Stage-Discharge for Pond 33P: INFILTRATION BASIN 2
Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)
91.650.000.000.0094.250.320.200.12
91.700.060.060.0094.300.330.210.12
91.750.060.060.0094.350.340.210.13
91.800.070.070.0094.400.350.220.13
91.850.070.070.0094.450.360.220.14
91.900.070.070.0094.500.360.220.14
91.950.070.070.0094.550.370.230.15
92.000.070.070.0094.600.380.230.15
92.050.080.080.0094.650.390.230.16
92.100.080.080.0094.700.400.240.16
92.150.080.080.0094.750.990.240.75
92.200.080.080.0094.802.070.241.82
92.250.090.090.0094.853.460.253.21
92.300.090.090.0094.903.580.253.33
92.350.090.090.0094.953.670.253.41
92.400.090.090.0095.003.720.263.46
92.450.100.100.00
92.500.100.100.00
92.550.100.100.00
92.600.110.110.00
92.650.110.110.00
92.700.110.110.00
92.750.110.110.00
92.800.120.120.00
92.850.120.120.00
92.900.120.120.00
92.950.120.120.00
93.000.130.130.00
93.050.130.130.00
93.100.130.130.00
93.150.130.130.00
93.200.140.140.00
93.250.140.140.00
93.300.140.140.00
93.350.150.150.00
93.400.150.150.00
93.450.150.150.00
93.500.160.160.00
93.550.160.160.00
93.600.160.160.00
93.650.170.170.00
93.700.170.170.00
93.750.190.170.02
93.800.210.170.03
93.850.230.180.05
93.900.240.180.06
93.950.260.180.07
94.000.270.190.08
94.050.280.190.09
94.100.290.190.10
94.150.300.200.10
94.200.310.200.11
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Area-Storage for Pond 33P: INFILTRATION BASIN 2
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
91.655200
91.7053926
91.7555754
91.8057682
91.85595111
91.90614142
91.95632173
92.00651205
92.05673238
92.10695272
92.15717308
92.20740344
92.25762382
92.30784420
92.35806460
92.40828501
92.45850543
92.50873586
92.55895630
92.60917675
92.65939722
92.70961769
92.75983818
92.801,005867
92.851,028918
92.901,050970
92.951,0721,023
93.001,0941,077
93.051,1211,133
93.101,1481,190
93.151,1741,248
93.201,2011,307
93.251,2281,368
93.301,2551,430
93.351,2811,493
93.401,3081,558
93.451,3351,624
93.501,3621,691
93.551,3881,760
93.601,4151,830
93.651,4421,902
93.701,4691,974
93.751,4952,048
93.801,5222,124
93.851,5492,201
93.901,5762,279
93.951,6022,358
94.001,6292,439
94.051,6602,521
94.101,6912,605
94.151,7222,690
94.201,7532,777
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
94.251,7842,866
94.301,8152,956
94.351,8463,047
94.401,8773,140
94.451,9083,235
94.501,9393,331
94.551,9703,429
94.602,0013,528
94.652,0323,629
94.702,0633,731
94.752,0943,835
94.802,1253,941
94.852,1564,048
94.902,1874,156
94.952,2184,266
95.002,2494,378
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Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 42P: BIORENTION BASIN 3A
Inflow Area = 29,621 sf, 0.00% Impervious, Inflow Depth = 0.05" for 2 YR-F event Inflow = 0.00 cfs @ 17.07 hrs, Volume = 124 cf Outflow = 0.00 cfs @ 24.11 hrs, Volume = 24 cf, Atten = 22%, Lag = 422.8 min Primary = 0.00 cfs @ 24.11 hrs, Volume = 24 cf Routed to Pond 8P : INFIL TRATION BASIN 3
Routed to Pond 8P : INFILTRATION BASIN 3
Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 93.84' @ 24.11 hrs Surf.Area= 338 sf Storage= 112 cf Plug-Flow detention time= 619.1 min calculated for 24 cf (20% of inflow) Center-of-Mass det. time= 379.1 min ( 1,538.6 - 1,159.5 )
VolumeInvertAvail.StorageStorage Description
#193.30'1,041 cfCustom Stage Data (Prismatic)Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
93.307700
94.00417173173
95.001,3198681,041
DeviceRoutingInvertOutlet Devices
#1Device 393.80'2.5" Vert. Orifice C = 0.600Limited to weir flow at low heads
#2Device 394.50'48.0" x 48.0" Horiz. Grate C = 0.600
#3Primary90.80'12.0" Round Culvert\n L = 11.0' RCP, groove end projecting, Ke = 0.200\nInlet / Outlet Invert= $ 90.80' / 90.75' $ S = 0.0045' /' Cc = 0.900\n n = 0.012 Concrete pipe, finished, Flow Area= $ 0.79 sf $
Primary OutFlow Max=0.00 cfs @ 24.11 hrs HW=93.84' TW=90.75' (Dynamic Tailwater) 3=Culvert (Passes 0.00 cfs of 7.45 cfs potential flow) 1=Orifice (Orifice Controls 0.00 cfs @ 0.66 fps) 2=Grate ( Controls 0.00 cfs)
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Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 42P: BIORENTION BASIN 3A
Pond 42P: BIORENTION BASIN 3A
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Pond 42P: BIORENTION BASIN 3A
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NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 12/19/2025
Analysis - Proposed Conditions NO Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LL
Hydrograph for Pond 42P: BIORENTION BASIN 3A
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Primary (cfs)
0.000.00093.300.00
2.000.00093.300.00
4.000.00093.300.00
6.000.00093.300.00
8.000.00093.300.00
10.000.00093.300.00
12.000.00093.300.00
14.000.00193.310.00
16.000.001993.470.00
18.000.004593.600.00
20.000.007093.700.00
22.000.009693.790.00
24.000.0011293.840.00
26.000.0010493.820.00
28.000.0010293.810.00
30.000.0010193.810.00
32.000.0010193.810.00
34.000.0010193.800.00
36.000.0010093.800.00
38.000.0010093.800.00
40.000.0010093.800.00
42.000.0010093.800.00
44.000.0010093.800.00
46.000.0010093.800.00
48.000.0010093.800.00
50.000.0010093.800.00
52.000.0010093.800.00
54.000.0010093.800.00
56.000.0010093.800.00
58.000.0010093.800.00
60.000.0010093.800.00
62.000.0010093.800.00
64.000.0010093.800.00
66.000.0010093.800.00
68.000.0010093.800.00
70.000.0010093.800.00
72.000.009993.800.00
Page 141
Page 309 Download HTML
NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 12/19/2025 Page 142
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 42P: BIORENTION BASIN 3A
Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)
93.300.0093.820.0094.340.11
93.310.0093.830.0094.350.11
93.320.0093.840.0094.360.11
93.330.0093.850.0094.370.11
93.340.0093.860.0194.380.11
93.350.0093.870.0194.390.11
93.360.0093.880.0194.400.12
93.370.0093.890.0194.410.12
93.380.0093.900.0294.420.12
93.390.0093.910.0294.430.12
93.400.0093.920.0294.440.12
93.410.0093.930.0394.450.12
93.420.0093.940.0394.460.12
93.430.0093.950.0394.470.12
93.440.0093.960.0494.480.12
93.450.0093.970.0494.490.13
93.460.0093.980.0594.500.13
93.470.0093.990.0594.510.18
93.480.0094.000.0594.520.28
93.490.0094.010.0594.530.40
93.500.0094.020.0694.540.55
93.510.0094.030.0694.550.72
93.520.0094.040.0694.560.90
93.530.0094.050.0694.571.10
93.540.0094.060.0694.581.32
93.550.0094.070.0794.591.55
93.560.0094.080.0794.601.79
93.570.0094.090.0794.612.05
93.580.0094.100.0794.622.31
93.590.0094.110.0794.632.59
93.600.0094.120.0894.642.88
93.610.0094.130.0894.653.18
93.620.0094.140.0894.663.49
93.630.0094.150.0894.673.81
93.640.0094.160.0894.684.14
93.650.0094.170.0894.694.48
93.660.0094.180.0994.704.83
93.670.0094.190.0994.715.18
93.680.0094.200.0994.725.55
93.690.0094.210.0994.735.92
93.700.0094.220.0994.746.30
93.710.0094.230.0994.756.69
93.720.0094.240.1094.767.09
93.730.0094.250.1094.777.49
93.740.0094.260.1094.787.91
93.750.0094.270.1094.798.33
93.760.0094.280.1094.808.75
93.770.0094.290.1094.818.86
93.780.0094.300.1094.828.87
93.790.0094.310.1094.838.88
93.800.0094.320.1194.848.89
93.810.0094.330.1194.858.91
Elevation (feet)Primary (cfs)
94.868.92
94.878.93
94.888.94
94.898.96
94.908.97
94.918.98
94.928.99
94.939.01
94.949.02
94.959.03
94.969.04
94.979.06
94.989.07
94.999.08
95.009.09
Page 310 Download HTML
NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 12/19/2025 s LLC Page 143
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Area-Storage for Pond 42P: BIORENTION BASIN 3A
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
93.3077094.34724367
93.3287294.36742381
93.3496394.38760396
93.36106594.40778412
93.38116894.42796428
93.401261094.44814444
93.421351394.46832460
93.441451694.48850477
93.461551994.50868494
93.481642294.52886512
93.501742594.54904530
93.521842994.56922548
93.541943294.58940566
93.562033694.60958585
93.582134194.62976605
93.602234594.64994625
93.622325094.661,012645
93.642425494.681,030665
93.662525994.701,048686
93.682626494.721,066707
93.702717094.741,084728
93.722817594.761,103750
93.742918194.781,121773
93.763008794.801,139795
93.783109394.821,157818
93.803209994.841,175841
93.8233010694.861,193865
93.8433911294.881,211889
93.8634911994.901,229914
93.8835912694.921,247938
93.9036813494.941,265963
93.9237814194.961,283989
93.9438814994.981,3011,015
93.9639815795.001,3191,041
93.98407165
94.00417173
94.02435181
94.04453190
94.06471200
94.08489209
94.10507219
94.12525229
94.14543240
94.16561251
94.18579263
94.20597274
94.22615286
94.24633299
94.26652312
94.28670325
94.30688339
94.32706353
Page 311 Download HTML
NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 12/19/2025 s LLC Page 144
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Link 32L: POA1
Inflow Area = 73,567 sf, 27.76% Impervious, Inflow Depth = 0.00" for 2 YR-F event Inflow = 0.00 cfs @ 0.00 hrs, Volume= 0 cf Primary = 0.00 cfs @ 0.00 hrs, Volume= 0 cf, Atten=0%, Lag=0.0 min
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 32L: POA1
Page 312 Download HTML
? YR-F Rainfall=4.04" Printed 12/19/2025 Page 145
NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 12/19/2025
Analysis - Proposed Conditions NO Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Link 32L: POA1
Time (hours)Inflow (cfs)Elevation (feet)Primary (cfs)
0.000.000.000.00
1.000.000.000.00
2.000.000.000.00
3.000.000.000.00
4.000.000.000.00
5.000.000.000.00
6.000.000.000.00
7.000.000.000.00
8.000.000.000.00
9.000.000.000.00
10.000.000.000.00
11.000.000.000.00
12.000.000.000.00
13.000.000.000.00
14.000.000.000.00
15.000.000.000.00
16.000.000.000.00
17.000.000.000.00
18.000.000.000.00
19.000.000.000.00
20.000.000.000.00
21.000.000.000.00
22.000.000.000.00
23.000.000.000.00
24.000.000.000.00
25.000.000.000.00
26.000.000.000.00
27.000.000.000.00
28.000.000.000.00
29.000.000.000.00
30.000.000.000.00
31.000.000.000.00
32.000.000.000.00
33.000.000.000.00
34.000.000.000.00
35.000.000.000.00
36.000.000.000.00
37.000.000.000.00
38.000.000.000.00
39.000.000.000.00
40.000.000.000.00
41.000.000.000.00
42.000.000.000.00
43.000.000.000.00
44.000.000.000.00
45.000.000.000.00
46.000.000.000.00
47.000.000.000.00
48.000.000.000.00
49.000.000.000.00
50.000.000.000.00
51.000.000.000.00
Time (hours)Inflow (cfs)Elevation (feet)Primary (cfs)
52.000.000.000.00
53.000.000.000.00
54.000.000.000.00
55.000.000.000.00
56.000.000.000.00
57.000.000.000.00
58.000.000.000.00
59.000.000.000.00
60.000.000.000.00
61.000.000.000.00
62.000.000.000.00
63.000.000.000.00
64.000.000.000.00
65.000.000.000.00
66.000.000.000.00
67.000.000.000.00
68.000.000.000.00
69.000.000.000.00
70.000.000.000.00
71.000.000.000.00
72.000.000.000.00
Page 313 Download HTML
NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 12/19/2025 s LLC Page 146
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Link 33L: POA 2
Inflow Area = 27,007 sf, 30.65% Impervious, Inflow Depth = 0.00" for 2 YR-F event Inflow = 0.00 cfs @ 0.00 hrs, Volume= 0 cf Primary = 0.00 cfs @ 0.00 hrs, Volume= 0 cf, Atten=0%, Lag=0.0 min
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 33L: POA 2
Page 314 Download HTML
YR-F Rainfall=4.04" Printed 12/19/2025 Page 147
NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 12/19/2025
Analysis - Proposed Conditions NO Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Link 33L: POA 2
Time (hours)Inflow (cfs)Elevation (feet)Primary (cfs)
0.000.000.000.00
1.000.000.000.00
2.000.000.000.00
3.000.000.000.00
4.000.000.000.00
5.000.000.000.00
6.000.000.000.00
7.000.000.000.00
8.000.000.000.00
9.000.000.000.00
10.000.000.000.00
11.000.000.000.00
12.000.000.000.00
13.000.000.000.00
14.000.000.000.00
15.000.000.000.00
16.000.000.000.00
17.000.000.000.00
18.000.000.000.00
19.000.000.000.00
20.000.000.000.00
21.000.000.000.00
22.000.000.000.00
23.000.000.000.00
24.000.000.000.00
25.000.000.000.00
26.000.000.000.00
27.000.000.000.00
28.000.000.000.00
29.000.000.000.00
30.000.000.000.00
31.000.000.000.00
32.000.000.000.00
33.000.000.000.00
34.000.000.000.00
35.000.000.000.00
36.000.000.000.00
37.000.000.000.00
38.000.000.000.00
39.000.000.000.00
40.000.000.000.00
41.000.000.000.00
42.000.000.000.00
43.000.000.000.00
44.000.000.000.00
45.000.000.000.00
46.000.000.000.00
47.000.000.000.00
48.000.000.000.00
49.000.000.000.00
50.000.000.000.00
51.000.000.000.00
Time (hours)Inflow (cfs)Elevation (feet)Primary (cfs)
52.000.000.000.00
53.000.000.000.00
54.000.000.000.00
55.000.000.000.00
56.000.000.000.00
57.000.000.000.00
58.000.000.000.00
59.000.000.000.00
60.000.000.000.00
61.000.000.000.00
62.000.000.000.00
63.000.000.000.00
64.000.000.000.00
65.000.000.000.00
66.000.000.000.00
67.000.000.000.00
68.000.000.000.00
69.000.000.000.00
70.000.000.000.00
71.000.000.000.00
72.000.000.000.00
Page 315 Download HTML
NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 12/19/2025 s LLC Page 148
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Link 34L: POA 3
Inflow Area = 38,333 sf, 22.73% Impervious, Inflow Depth = 0.00" for 2 YR-F event Inflow = 0.00 cfs @ 0.00 hrs, Volume= 0 cf Primary = 0.00 cfs @ 0.00 hrs, Volume= 0 cf, Atten=0%, Lag=0.0 min
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 34L: POA 3
Page 316 Download HTML
2 YR-F Rainfall=4.04" Printed 12/19/2025 Page 149
NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 12/19/2025
Analysis - Proposed Conditions NO Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Link 34L: POA 3
Time (hours)Inflow (cfs)Elevation (feet)Primary (cfs)
0.000.000.000.00
1.000.000.000.00
2.000.000.000.00
3.000.000.000.00
4.000.000.000.00
5.000.000.000.00
6.000.000.000.00
7.000.000.000.00
8.000.000.000.00
9.000.000.000.00
10.000.000.000.00
11.000.000.000.00
12.000.000.000.00
13.000.000.000.00
14.000.000.000.00
15.000.000.000.00
16.000.000.000.00
17.000.000.000.00
18.000.000.000.00
19.000.000.000.00
20.000.000.000.00
21.000.000.000.00
22.000.000.000.00
23.000.000.000.00
24.000.000.000.00
25.000.000.000.00
26.000.000.000.00
27.000.000.000.00
28.000.000.000.00
29.000.000.000.00
30.000.000.000.00
31.000.000.000.00
32.000.000.000.00
33.000.000.000.00
34.000.000.000.00
35.000.000.000.00
36.000.000.000.00
37.000.000.000.00
38.000.000.000.00
39.000.000.000.00
40.000.000.000.00
41.000.000.000.00
42.000.000.000.00
43.000.000.000.00
44.000.000.000.00
45.000.000.000.00
46.000.000.000.00
47.000.000.000.00
48.000.000.000.00
49.000.000.000.00
50.000.000.000.00
51.000.000.000.00
Time (hours)Inflow (cfs)Elevation (feet)Primary (cfs)
52.000.000.000.00
53.000.000.000.00
54.000.000.000.00
55.000.000.000.00
56.000.000.000.00
57.000.000.000.00
58.000.000.000.00
59.000.000.000.00
60.000.000.000.00
61.000.000.000.00
62.000.000.000.00
63.000.000.000.00
64.000.000.000.00
65.000.000.000.00
66.000.000.000.00
67.000.000.000.00
68.000.000.000.00
69.000.000.000.00
70.000.000.000.00
71.000.000.000.00
72.000.000.000.00
Page 317 Download HTML
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 12/19/2025 Page 150
Time span=0.00-72.00 hrs, dt=0.01 hrs, 7201 points Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method
Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method Subcatchment2S: DA-P1 PERVOUS Runoff Area=1.220 ac 0.00% Impervious Runoff Depth=0.28" Flow Length=525' Tc=14.2 min CN=39/0 Runoff=0.06 cfs 1,255 cf Subcatchment3S: DA-P3 PERVOUS Runoff Area=0.680 ac 0.00% Impervious Runoff Depth=0.28" Flow Length=363' Tc=11.5 min CN=39/0 Runoff=0.04 cfs 700 cf Subcatchment4S: DA-P2 PERVOUS Runoff Area=0.430 ac 0.00% Impervious Runoff Depth=0.28" Flow Length=168' Slope=0.0300'/' Tc=8.7 min CN=39/0 Runoff=0.02 cfs 442 cf Subcatchment6S: DA-P3 IMPERVOUS Runoff Area=0.200 ac 100.00% Impervious Runoff Depth=5.14" Flow Length=155' Tc=4.3 min CN=0/98 Runoff=0.93 cfs 3,734 cf Subcatchment7S: DA-P2 IMPERVOUS Runoff Area=0.190 ac 100.00% Impervious Runoff Depth=5.14" Flow Length=172' Tc=4.3 min CN=0/98 Runoff=0.89 cfs 3,547 cf Subcatchment8S: DA-P1 IMPERVOUS Runoff Area=0.400 ac 100.00% Impervious Runoff Depth=5.14" Flow Length=372' Slope=0.0200'/' Tc=2.5 min CN=0/98 Runoff=2.11 cfs 7,467 cf Subcatchment14S: LOT 11 Roof Runoff Area=3,000 sf 100.00% Impervious Runoff Depth=5.14" Flow Length=40' Tc=0.3 min CN=0/98 Runoff=0.39 cfs 1,286 cf Pond 2P: Subsurface Infiltration Basin 1 Peak Elev=87.01' Storage=10 cf Inflow=0.56 cfs 8,501 cf Discarded=0.56 cfs 8,501 cf Primary=0.00 cfs 0 cf Outflow=0.56 cfs 8,501 cf Pond 5P: BIORETENTION BASIN 1A Peak Elev=92.99' Storage=4,482 cf Inflow=2.11 cfs 8,722 cf Outflow=0.23 cfs 7,216 cf Pond 6P: BIORENTION BASIN 2 Peak Elev=94.91' Storage=60 cf Inflow=0.02 cfs 442 cf Outflow=0.02 cfs 396 cf Pond 8P: INFILTRATION BASIN 3 Peak Elev=91.01' Storage=294 cf Inflow=0.67 cfs 4,330 cf Discarded=0.27 cfs 4,330 cf Primary=0.00 cfs 0 cf Outflow=0.27 cfs 4,330 cf Pond 10P: PERVOUS PAVEMENT 2 Peak Elev=94.84' Storage=966 cf Inflow=0.89 cfs 3,547 cf Outflow=0.56 cfs 3,543 cf Pond 15P: PERVOUS PAVEMENT 3B Peak Elev=94.85' Storage=951 cf Inflow=0.93 cfs 3,734 cf Outflow=0.67 cfs 3,730 cf Pond 33P: INFILTRATION BASIN 2 Peak Elev=92.72' Storage=790 cf Inflow=0.56 cfs 3,938 cf Discarded=0.11 cfs 3,938 cf Primary=0.00 cfs 0 cf Outflow=0.11 cfs 3,938 cf Pond 42P: BIORENTION BASIN 3A Peak Elev=93.92' Storage=141 cf Inflow=0.04 cfs 700 cf Outflow=0.02 cfs 600 cf Link 32L: POA1 Inflow=0.00 cfs 0 cf Primary=0.00 cfs 0 cf
Page 318 Download HTML
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 12/19/2025 Page 151
link 33L: POA2 -ink 34L: POA3 Total Runoff Area = 138,907 sf Runoff Volume = 18,430 cf Average Runoff Depth = 1.59" 73.07% Pervious = 101,495 sf 26.93% Impervious = 37,412 sf
Page 319 Download HTML
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 12/19/2025 ons LLC Page 152
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 2S: DA-P1 PERVIOUS
Runoff = 0.06 cfs @ 13.07 hrs, Volume= Routed to Pond 5P : BIORETENTION BASIN 1A
1,255 cf, Depth= 0.28"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-C Rainfall=5.38"
Page 320 Download HTML
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 12/19/2025
0 YR-C Rainfall=5.38" Printed 12/19/2025 Page 153
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 2S: DA-P1 PERVIOUS
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.130.000.000.00
4.000.280.000.000.00
6.000.460.000.000.00
8.000.700.000.000.00
10.001.070.000.000.00
12.002.580.000.000.00
14.004.310.080.000.05
16.004.680.140.000.03
18.004.920.180.000.02
20.005.100.220.000.02
22.005.250.250.000.02
24.005.380.280.000.02
26.005.380.280.000.00
28.005.380.280.000.00
30.005.380.280.000.00
32.005.380.280.000.00
34.005.380.280.000.00
36.005.380.280.000.00
38.005.380.280.000.00
40.005.380.280.000.00
42.005.380.280.000.00
44.005.380.280.000.00
46.005.380.280.000.00
48.005.380.280.000.00
50.005.380.280.000.00
52.005.380.280.000.00
54.005.380.280.000.00
56.005.380.280.000.00
58.005.380.280.000.00
60.005.380.280.000.00
62.005.380.280.000.00
64.005.380.280.000.00
66.005.380.280.000.00
68.005.380.280.000.00
70.005.380.280.000.00
72.005.380.280.000.00
Page 321 Download HTML
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 12/19/2025 ons LLC Page 154
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 3S: DA-P3 PERVIOUS
Runoff = 0.04 cfs @ 12.98 hrs, Volume= Routed to Pond 42P : BIORENTION BASIN 3A
700 cf, Depth= 0.28"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-C Rainfall=5.38"
Area (ac) CN Description
0.680 39 >75% Grass cover, Good, HSG A
0.680 39 100.00% Pervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
9.0 83 0.0400 0.15 Sheet Flow, Grass: Dense n= 0.240 P2= 3.42" Using McCuen-Spiess flow length
0.2 10 0.0240 1.08 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps
2.2 270 2.00 Direct Entry, Pioe Flow
11.5 363 Total
Subcatchment 3S: DA-P3 PERVIOUS
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Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 3S: DA-P3 PERVIOUS
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.130.000.000.00
4.000.280.000.000.00
6.000.460.000.000.00
8.000.700.000.000.00
10.001.070.000.000.00
12.002.580.000.000.00
14.004.310.080.000.03
16.004.680.140.000.02
18.004.920.180.000.01
20.005.100.220.000.01
22.005.250.250.000.01
24.005.380.280.000.01
26.005.380.280.000.00
28.005.380.280.000.00
30.005.380.280.000.00
32.005.380.280.000.00
34.005.380.280.000.00
36.005.380.280.000.00
38.005.380.280.000.00
40.005.380.280.000.00
42.005.380.280.000.00
44.005.380.280.000.00
46.005.380.280.000.00
48.005.380.280.000.00
50.005.380.280.000.00
52.005.380.280.000.00
54.005.380.280.000.00
56.005.380.280.000.00
58.005.380.280.000.00
60.005.380.280.000.00
62.005.380.280.000.00
64.005.380.280.000.00
66.005.380.280.000.00
68.005.380.280.000.00
70.005.380.280.000.00
72.005.380.280.000.00
Page 155
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Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 4S: DA-P2 PERVIOUS
Runoff = 0.02 cfs @ 12.87 hrs, Volume= Routed to Pond 6P : BIORENTION BASIN 2A
442 cf, Depth= 0.28"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-C Rainfall=5.38"
Area (ac) CN Description
0.430 39 >75% Grass cover, Good, HSG A
0.430 39 100.00% Pervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
7.8 60 0.0300 0.13 Sheet Flow, Grass: Dense n= 0.240 P2= 3.42"
0.9 108 2.00 Direct Entry, Pipe Flow
8.7 168 Total
Subcatchment 4S: DA-P2 PERVIOUS
Subcatchment 4S: DA-P2 PERVIOUS
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NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 12/19/2025
0 YR-C Rainfall=5.38" Printed 12/19/2025 Page 157
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 4S: DA-P2 PERVIOUS
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.130.000.000.00
4.000.280.000.000.00
6.000.460.000.000.00
8.000.700.000.000.00
10.001.070.000.000.00
12.002.580.000.000.00
14.004.310.080.000.02
16.004.680.140.000.01
18.004.920.180.000.01
20.005.100.220.000.01
22.005.250.250.000.01
24.005.380.280.000.01
26.005.380.280.000.00
28.005.380.280.000.00
30.005.380.280.000.00
32.005.380.280.000.00
34.005.380.280.000.00
36.005.380.280.000.00
38.005.380.280.000.00
40.005.380.280.000.00
42.005.380.280.000.00
44.005.380.280.000.00
46.005.380.280.000.00
48.005.380.280.000.00
50.005.380.280.000.00
52.005.380.280.000.00
54.005.380.280.000.00
56.005.380.280.000.00
58.005.380.280.000.00
60.005.380.280.000.00
62.005.380.280.000.00
64.005.380.280.000.00
66.005.380.280.000.00
68.005.380.280.000.00
70.005.380.280.000.00
72.005.380.280.000.00
Page 325 Download HTML
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Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 6S: DA-P3 IMPERVIOUS
Runoff = 0.93 cfs @ 12.12 hrs, Volume= Routed to Pond 15P : PERVIOUS PAVEMENT 3B 3,734 cf, Depth= 5.14"
3,734 cf, Depth= 5.14"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-C Rainfall=5.38"
Area (ac) CN Description
0.200 98 Paved parking, HSG A
0.200 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
3.6 37 0.0300 0.17 Sheet Flow, Grass: Short n= 0.150 P2= 3.42" Shallow Concentrated Flow, Paved Kv= 20.3 fps
0.7 118 0.0200 2.87
4.3 155 Total
Subcatchment 6S: DA-P3 IMPERVIOUS
Subcatchment 6S: DA-P3 IMPERVIOUS
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NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 12/19/2025
YR-C Rainfall=5.38" Printed 12/19/2025 Page 159
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 6S: DA-P3 IMPERVIOUS
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.130.000.030.01
4.000.280.000.130.01
6.000.460.000.280.02
8.000.700.000.500.03
10.001.070.000.860.05
12.002.580.002.350.53
14.004.310.004.080.05
16.004.680.004.450.03
18.004.920.004.680.02
20.005.100.004.860.02
22.005.250.005.010.01
24.005.380.005.140.01
26.005.380.005.140.00
28.005.380.005.140.00
30.005.380.005.140.00
32.005.380.005.140.00
34.005.380.005.140.00
36.005.380.005.140.00
38.005.380.005.140.00
40.005.380.005.140.00
42.005.380.005.140.00
44.005.380.005.140.00
46.005.380.005.140.00
48.005.380.005.140.00
50.005.380.005.140.00
52.005.380.005.140.00
54.005.380.005.140.00
56.005.380.005.140.00
58.005.380.005.140.00
60.005.380.005.140.00
62.005.380.005.140.00
64.005.380.005.140.00
66.005.380.005.140.00
68.005.380.005.140.00
70.005.380.005.140.00
72.005.380.005.140.00
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Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 7S: DA-P2 IMPERVIOUS
Runoff = 0.89 cfs @ 12.12 hrs, Volume= Routed to Pond 10P : PERVIOUS PAVEMENT 2B 3,547 cf, Depth= 5.14"
3,547 cf. Depth= 5.14"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-C Rainfall=5.38"
Area (ac) CN Description
0.190 98 Paved roads w/curbs & sewers, HSG A
0.190 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
3.5 35 0.0300 0.17 Sheet Flow, Grass: Short n= 0.150 P2= 3.42"
0.8 137 0.0200 2.87 Shallow Concentrated Flow, Paved Kv= 20.3 fps
4 3 172 Total
Subcatchment 7S: DA-P2 IMPERVIOUS
Subcatchment 7S: DA-P2 IMPERVIOUS
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NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 12/19/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 7S: DA-P2 IMPERVIOUS
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.130.000.030.01
4.000.280.000.130.01
6.000.460.000.280.02
8.000.700.000.500.03
10.001.070.000.860.05
12.002.580.002.350.51
14.004.310.004.080.05
16.004.680.004.450.03
18.004.920.004.680.02
20.005.100.004.860.02
22.005.250.005.010.01
24.005.380.005.140.01
26.005.380.005.140.00
28.005.380.005.140.00
30.005.380.005.140.00
32.005.380.005.140.00
34.005.380.005.140.00
36.005.380.005.140.00
38.005.380.005.140.00
40.005.380.005.140.00
42.005.380.005.140.00
44.005.380.005.140.00
46.005.380.005.140.00
48.005.380.005.140.00
50.005.380.005.140.00
52.005.380.005.140.00
54.005.380.005.140.00
56.005.380.005.140.00
58.005.380.005.140.00
60.005.380.005.140.00
62.005.380.005.140.00
64.005.380.005.140.00
66.005.380.005.140.00
68.005.380.005.140.00
70.005.380.005.140.00
72.005.380.005.140.00
Page 161
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Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 8S: DA-P1 IMPERVIOUS
Runoff = 2.11 cfs @ 12.11 hrs, Volume= Routed to Pond 5P : BIORETENTION BASIN 1A
7,467 cf, Depth= 5.14"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-C Rainfall=5.38"
Area (ac) CN Description
0.400 98 Paved roads w/curbs & sewers, HSG A
0.400 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
1.4 235 0.0200 2.87 Shallow Concentrated Flow, Paved Kv= 20.3 fps
1.1 137 2.00 Direct Entry, Pipe Flow
2.5 372 Total
Subcatchment 8S: DA-P1_IMPERVIOUS Pipe Flow
Subcatchment 8S: DA-P1 IMPERVIOUS
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours)
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Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 8S: DA-P1 IMPERVIOUS
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.130.000.030.01
4.000.280.000.130.03
6.000.460.000.280.03
8.000.700.000.500.05
10.001.070.000.860.10
12.002.580.002.351.25
14.004.310.004.080.11
16.004.680.004.450.06
18.004.920.004.680.04
20.005.100.004.860.03
22.005.250.005.010.03
24.005.380.005.140.02
26.005.380.005.140.00
28.005.380.005.140.00
30.005.380.005.140.00
32.005.380.005.140.00
34.005.380.005.140.00
36.005.380.005.140.00
38.005.380.005.140.00
40.005.380.005.140.00
42.005.380.005.140.00
44.005.380.005.140.00
46.005.380.005.140.00
48.005.380.005.140.00
50.005.380.005.140.00
52.005.380.005.140.00
54.005.380.005.140.00
56.005.380.005.140.00
58.005.380.005.140.00
60.005.380.005.140.00
62.005.380.005.140.00
64.005.380.005.140.00
66.005.380.005.140.00
68.005.380.005.140.00
70.005.380.005.140.00
72.005.380.005.140.00
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Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 164
Summary for Subcatchment 14S: LOT 11 Roof
Runoff = 0.39 cfs @ 12.09 hrs, Volume= 1,286 cf, Depth= 5.14" Routed to Pond 2P : Subsurface Infiltration Basin 1
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-C Rainfall=5.38"
Area (sf) CN Description
3,000 98 Roofs, HSG A
3,000 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)
0.3 40 2.00 Direct Entry, Pipe Flow
Subcatchment 14S: LOT 11 Roof
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NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 12/19/2025
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 14S: LOT 11 Roof
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.130.000.030.00
4.000.280.000.130.00
6.000.460.000.280.01
8.000.700.000.500.01
10.001.070.000.860.02
12.002.580.002.350.24
14.004.310.004.080.02
16.004.680.004.450.01
18.004.920.004.680.01
20.005.100.004.860.01
22.005.250.005.010.00
24.005.380.005.140.00
26.005.380.005.140.00
28.005.380.005.140.00
30.005.380.005.140.00
32.005.380.005.140.00
34.005.380.005.140.00
36.005.380.005.140.00
38.005.380.005.140.00
40.005.380.005.140.00
42.005.380.005.140.00
44.005.380.005.140.00
46.005.380.005.140.00
48.005.380.005.140.00
50.005.380.005.140.00
52.005.380.005.140.00
54.005.380.005.140.00
56.005.380.005.140.00
58.005.380.005.140.00
60.005.380.005.140.00
62.005.380.005.140.00
64.005.380.005.140.00
66.005.380.005.140.00
68.005.380.005.140.00
70.005.380.005.140.00
72.005.380.005.140.00
Page 165
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Analysis - Proposed Conditions NOAA 24-hr D 10 YR-C Rainfall=5.38" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 166
Summary for Pond 2P: Subsurface Infiltration Basin 1
Inflow Area = 73,567 sf, 27.76% Impervious, Inflow Depth = 1.39" for 10 YR-C event
Inflow = 0.56 cfs @ 12.09 hrs, Volume= 8,501 cf
Outflow = 0.56 cfs @ 12.09 hrs, Volume= 8,501 cf, Atten= 0%, Lag= 0.0 min
Discarded = 0.56 cfs @ 12.09 hrs, Volume= 8,501 cf
Primary = 0.00 cfs @ 0.00 hrs, Volume= 0 cf
Routed to Link 32L : POA1
Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs
Peak Elev= 87.01' @ 12.09 hrs Surf.Area= 2,475 sf Storage= 10 cf
Plug-Flow detention time= 0.3 min calculated for 8,500 cf (100% of inflow)
Center-of-Mass det. time= 0.3 min ( 985.5 - 985.2 )
Volume Invert Avail.Storage Storage Description
#2A 87.50' 3,188 cf 14,850 cf Overall - 3,979 cf Embedded = 10,871 cf x 40.0% Voids
Outside= 42.0"W x 42.0"H => 8.86 sf x 20.00'L = 177.2 cf
20 Chambers in 5 Rows
#1A 87.00' 4,349 cf 27.50'W x 90.00'L x 6.00'H Field A
ADS N-12 36" x 20 Inside #1
Inside= 36.1"W x 36.1"H => 7.10 sf x 20.00'L = 142.0 cf
24.50' Header x 7.10 sf x 2 = 347.9 cf Inside
7,536 cf Total Available Storage
Storage Group A created with Chamber Wizard
Device Routing Invert Outlet Devices
#2 Device 1 88.00' 12.0" Round Culvert
#1 Primary 92.59' 48.0" x 48.0" Horiz. Grate C = 0.600
Limited to weir flow at low heads
L= 119.0' RCP, square edge headwall, Ke= 0.500
Inlet / Outlet Invert= 88.00' / 86.00' S= 0.0168 /" Cc= 0.900
n= 0.012 Concrete pipe, finished, Flow Area= 0.79 sf
#3 Discarded 87.00' 10.000 in/hr Exfiltration over Surface area Phase-In= 0.01'
Discarded OutFlow Max=0.56 cfs @ 12.09 hrs HW=87.01' (Free Discharge)
3=Exfiltration (Exfiltration Controls 0.56 cfs)
Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=87.00' TW=0.00' (Dynamic Tailwater)
1=Grate ( Controls 0.00 cfs)
2=Culvert ( Controls 0.00 cfs)
Pond 2P: Subsurface Infiltration Basin 1
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Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 2P: Subsurface Infiltration Basin 1 - Chamber Wizard Field A
Chamber Model = ADS N-12 36" (ADS N-12ยฎ Pipe) Inside= 36.1"W x 36.1"H => 7.10 sf x 20.00'L = 142.0 cf Outside= 42.0"W x 42.0"H => 8.86 sf x 20.00'L = 177.2 cf 42.0" Wide + 21.0" Spacing = 63.0" C-C Row Spacing 4 Chambers/Row x 20.00' Long +3.50' Header x 2 = 87.00' Row Length +18.0" End Stone x 2 = 90.00' Base Length 5 Rows x 42.0" Wide + 21.0" Spacing x 4 + 18.0" Side Stone x 2 = 27.50' Base Width 6.0" Stone Base + 42.0" Chamber Height + 24.0" Stone Cover = 6.00' Field Height 20 Chambers x 142.0 cf + 24.50' Header x 7.10 sf x 2 = 3,187.9 cf Chamber Storage 20 Chambers x 177.2 cf + 24.50' Header x 8.86 sf x 2 = 3,978.6 cf Displacement 14,850.0 cf Field - 3,978.6 cf Chambers = 10,871.4 cf Stone x 40.0% Voids = 4,348.5 cf Stone Storage Chamber Storage + Stone Storage = 7,536.4 cf = 0.173 af Overall Storage Efficiency = 50.8% Overall System Size = 90.00' x 27.50' x 6.00' 20 Chambers 550.0 cy Field 402.6 cy Stone
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 2P: Subsurface Infiltration Basin 1
Pond 2P: Subsurface Infiltration Basin 1
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Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 2P: Subsurface Infiltration Basin 1
Stage-Area-Storage
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Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 2P: Subsurface Infiltration Basin 1
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Outflow (cfs)Discarded (cfs)Primary (cfs)
0.000.00087.000.000.000.00
2.000.00087.000.000.000.00
4.000.00087.000.000.000.00
6.000.01087.000.010.010.00
8.000.01087.000.010.010.00
10.000.02087.000.020.020.00
12.000.39787.010.380.380.00
14.000.24487.000.240.240.00
16.000.20387.000.200.200.00
18.000.16387.000.160.160.00
20.000.12287.000.120.120.00
22.000.09287.000.090.090.00
24.000.07187.000.070.070.00
26.000.02087.000.020.020.00
28.000.00087.000.000.000.00
30.000.00087.000.000.000.00
32.000.00087.000.000.000.00
34.000.00087.000.000.000.00
36.000.00087.000.000.000.00
38.000.00087.000.000.000.00
40.000.00087.000.000.000.00
42.000.00087.000.000.000.00
44.000.00087.000.000.000.00
46.000.00087.000.000.000.00
48.000.00087.000.000.000.00
50.000.00087.000.000.000.00
52.000.00087.000.000.000.00
54.000.00087.000.000.000.00
56.000.00087.000.000.000.00
58.000.00087.000.000.000.00
60.000.00087.000.000.000.00
62.000.00087.000.000.000.00
64.000.00087.000.000.000.00
66.000.00087.000.000.000.00
68.000.00087.000.000.000.00
70.000.00087.000.000.000.00
72.000.00087.000.000.000.00
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NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 12/19/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 171
Stage-Discharge for Pond 2P: Subsurface Infiltration Basin 1
Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)
87.000.000.000.00
87.100.570.570.00
87.200.570.570.00
87.300.570.570.00
87.400.570.570.00
87.500.570.570.00
87.600.570.570.00
87.700.570.570.00
87.800.570.570.00
87.900.570.570.00
88.000.570.570.00
88.100.570.570.00
88.200.570.570.00
88.300.570.570.00
88.400.570.570.00
88.500.570.570.00
88.600.570.570.00
88.700.570.570.00
88.800.570.570.00
88.900.570.570.00
89.000.570.570.00
89.100.570.570.00
89.200.570.570.00
89.300.570.570.00
89.400.570.570.00
89.500.570.570.00
89.600.570.570.00
89.700.570.570.00
89.800.570.570.00
89.900.570.570.00
90.000.570.570.00
90.100.570.570.00
90.200.570.570.00
90.300.570.570.00
90.400.570.570.00
90.500.570.570.00
90.600.570.570.00
90.700.570.570.00
90.800.570.570.00
90.900.570.570.00
91.000.570.570.00
91.100.570.570.00
91.200.570.570.00
91.300.570.570.00
91.400.570.570.00
91.500.570.570.00
91.600.570.570.00
91.700.570.570.00
91.800.570.570.00
91.900.570.570.00
92.000.570.570.00
92.100.570.570.00
Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)
92.200.570.570.00
92.300.570.570.00
92.400.570.570.00
92.500.570.570.00
92.600.630.570.05
92.701.540.570.97
92.801.910.571.33
92.902.190.571.62
93.002.440.571.86
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Area-Storage for Pond 2P: Subsurface Infiltration Basin 1
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
87.002,4750
87.102,47599
87.202,475198
87.302,475297
87.402,475396
87.502,475495
87.602,475581
87.702,475657
87.802,475739
87.902,475852
88.002,475980
88.102,4751,118
88.202,4751,264
88.302,4751,416
88.402,4751,573
88.502,4751,735
88.602,4751,900
88.702,4752,069
88.802,4752,240
88.902,4752,412
89.002,4752,587
89.102,4752,762
89.202,4752,938
89.302,4753,114
89.402,4753,290
89.502,4753,465
89.602,4753,639
89.702,4753,812
89.802,4753,983
89.902,4754,151
90.002,4754,316
90.102,4754,478
90.202,4754,636
90.302,4754,788
90.402,4754,934
90.502,4755,072
90.602,4755,200
90.702,4755,313
90.802,4755,395
90.902,4755,470
91.002,4755,556
91.102,4755,655
91.202,4755,754
91.302,4755,853
91.402,4755,952
91.502,4756,051
91.602,4756,150
91.702,4756,249
91.802,4756,348
91.902,4756,447
92.002,4756,546
92.102,4756,645
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
92.202,4756,744
92.302,4756,843
92.402,4756,942
92.502,4757,041
92.602,4757,140
92.702,4757,239
92.802,4757,338
92.902,4757,437
93.002,4757,536
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VOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 12/19/2025 Page 173
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 5P: BIORETENTION BASIN 1A
Inflow Area = 70,567 sf, 24.69% Impervious, Inflow Depth = 1.48" for 10 YR-C event Inflow = 2.11 cfs @ 12.11 hrs, Volume = 8,722 cf Outflow = 0.23 cfs @ 13.24 hrs, Volume = 7,216 cf, Atten = 89%, Lag = 67.8 min Primary = 0.23 cfs @ 13.24 hrs, Volume = 7,216 cf Routed to Pond 2P : Subsurface Infiltration Basin 1
Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 92.99' @ 13.24 hrs Surf.Area= 1,500 sf Storage= 4,482 cf Plug-Flow detention time= 328.3 min calculated for 7,216 cf (83% of inflow) Center-of-Mass det. time= 241.7 min (1,028.3 - 786.6)
VolumeInvertAvail.StorageStorage Description
#190.00'8,250 cfCustom Stage Data (Prismatic)Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
90.001,50000
95.501,5008,2508,250
DeviceRoutingInvertOutlet Devices
#1Device 391.00'2.5" Vert. Orifice C = 0.600 Limited to weir flow at low heads
#2Device 395.00'48.0" x 48.0" Horiz. Grate C = 0.600 Limited to weir flow at low heads
#3Primary87.48'12.0" Round Culvert\n L = 28.0' RCP, groove end projecting, Ke = 0.200\nInlet / Outlet Invert= 87.48' / 87.00' S = 0.0171' /' Cc = 0.900\n n = 0.012 Concrete pipe, finished, Flow Area= 0.79 sf
Primary OutFlow Max=0.23 cfs @ 13.24 hrs HW=92.99' TW=87.00' (Dynamic Tailwater) 3=Culvert (Passes 0.23 cfs of 10.08 cfs potential flow) 1=Orifice (Orifice Controls 0.23 cfs @ 6.61 fps) 2=Grate ( Controls 0.00 cfs)
Image
Culvert
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Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 5P: BIORETENTION BASIN 1A
Pond 5P: BIORETENTION BASIN 1A
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Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 12/19/2025 ons LLC Page 175
Pond 5P: BIORETENTION BASIN 1A
Stage-Area-Storage
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NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 12/19/2025
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions Ltd
Hydrograph for Pond 5P: BIORETENTION BASIN 1A
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Primary (cfs)
0.000.00090.000.00
2.000.013590.020.00
4.000.0318490.120.00
6.000.0340190.270.00
8.000.0571690.480.00
10.000.101,22090.810.00
12.001.252,82391.880.14
14.000.154,36092.910.22
16.000.093,68592.460.19
18.000.062,99291.990.15
20.000.062,43391.620.12
22.000.052,07391.380.09
24.000.041,86791.240.06
26.000.001,63891.090.02
28.000.001,57691.050.00
30.000.001,55291.030.00
32.000.001,53991.030.00
34.000.001,53191.020.00
36.000.001,52691.020.00
38.000.001,52291.010.00
40.000.001,51991.010.00
42.000.001,51791.010.00
44.000.001,51591.010.00
46.000.001,51491.010.00
48.000.001,51391.010.00
50.000.001,51291.010.00
52.000.001,51191.010.00
54.000.001,51091.010.00
56.000.001,51091.010.00
58.000.001,50991.010.00
60.000.001,50991.010.00
62.000.001,50891.010.00
64.000.001,50891.010.00
66.000.001,50791.000.00
68.000.001,50791.000.00
70.000.001,50791.000.00
72.000.001,50691.000.00
Page 176
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NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 12/19/2025
YR-C Rainfall=5.38" Printed 12/19/2025 Page 177
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 5P: BIORETENTION BASIN 1A
Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)
90.000.0092.600.20
90.050.0092.650.20
90.100.0092.700.21
90.150.0092.750.21
90.200.0092.800.21
90.250.0092.850.22
90.300.0092.900.22
90.350.0092.950.22
90.400.0093.000.23
90.450.0093.050.23
90.500.0093.100.23
90.550.0093.150.23
90.600.0093.200.24
90.650.0093.250.24
90.700.0093.300.24
90.750.0093.350.25
90.800.0093.400.25
90.850.0093.450.25
90.900.0093.500.25
90.950.0093.550.26
91.000.0093.600.26
91.050.0093.650.26
91.100.0293.700.26
91.150.0393.750.27
91.200.0593.800.27
91.250.0693.850.27
91.300.0793.900.27
91.350.0893.950.28
91.400.0994.000.28
91.450.1094.050.28
91.500.1094.100.28
91.550.1194.150.29
91.600.1294.200.29
91.650.1294.250.29
91.700.1394.300.29
91.750.1394.350.30
91.800.1494.400.30
91.850.1494.450.30
91.900.1594.500.30
91.950.1594.550.30
92.000.1694.600.31
92.050.1694.650.31
92.100.1694.700.31
92.150.1794.750.31
92.200.1794.800.32
92.250.1894.850.32
92.300.1894.900.32
92.350.1894.950.32
92.400.1995.000.32
92.450.1995.050.91
92.500.1995.101.98
92.550.2095.153.37
Elevation (feet)Primary (cfs)
95.205.01
95.256.87
95.308.93
95.3511.17
95.4012.28
95.4512.32
95.5012.36
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Area-Storage for Pond 5P: BIORETENTION BASIN 1A
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
90.001,5000
90.101,500150
90.201,500300
90.301,500450
90.401,500600
90.501,500750
90.601,500900
90.701,5001,050
90.801,5001,200
90.901,5001,350
91.001,5001,500
91.101,5001,650
91.201,5001,800
91.301,5001,950
91.401,5002,100
91.501,5002,250
91.601,5002,400
91.701,5002,550
91.801,5002,700
91.901,5002,850
92.001,5003,000
92.101,5003,150
92.201,5003,300
92.301,5003,450
92.401,5003,600
92.501,5003,750
92.601,5003,900
92.701,5004,050
92.801,5004,200
92.901,5004,350
93.001,5004,500
93.101,5004,650
93.201,5004,800
93.301,5004,950
93.401,5005,100
93.501,5005,250
93.601,5005,400
93.701,5005,550
93.801,5005,700
93.901,5005,850
94.001,5006,000
94.101,5006,150
94.201,5006,300
94.301,5006,450
94.401,5006,600
94.501,5006,750
94.601,5006,900
94.701,5007,050
94.801,5007,200
94.901,5007,350
95.001,5007,500
95.101,5007,650
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
95.201,5007,800
95.301,5007,950
95.401,5008,100
95.501,5008,250
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NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 12/19/2025 ons LLC Page 179
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 6P: BIORENTION BASIN 2A
Inflow Area = 18,731 sf, 0.00% Impervious, Inflow Depth = 0.28" for 10 YR-C event Inflow = 0.02 cfs @ 12.87 hrs, Volume= 442 cf Outflow = 0.02 cfs @ 13.41 hrs, Volume= 396 cf, Atten= 15%, Lag= 32.2 min Primary = 0.02 cfs @ 13.41 hrs, Volume= 396 cf Routed to Pond 33P : INFILTRATION BASIN 2 Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 94.91' @ 13.41 hrs Surf.Area= 137 sf Storage= 60 cf Plug-Flow detention time= 91.4 min calculated for 396 cf (89% of inflow) Center-of-Mass det. time= 47.6 min ( 1,065.9 - 1,018.3 )
VolumeInvertAvail.StorageStorage Description
#194.30'307 cfCustom Stage Data (Prismatic)Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
94.306300
95.001487474
96.00319234307
DeviceRoutingInvertOutlet Devices
#1Device 394.80'2.5" Vert. Orifice C= 0.600 Limited to weir flow at low heads
#2Device 395.50'48.0" x 48.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads
#3Primary91.80'12.0" Round Culvert L= 30.0' RCP, groove end projecting, Ke= 0.200 Inlet / Outlet Invert= 91.80' / 91.65' S= 0.0050 ' /' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 0.79 sf
Primary OutFlow Max=0.02 cfs @ 13.41 hrs HW=94.91' TW=92.66' (Dynamic Tailwater) 3=Culvert (Passes 0.02 cfs of 6.67 cfs potential flow) 1=Orifice (Orifice Controls 0.02 cfs @ 1.11 fps) 2=Grate ( Controls 0.00 cfs)
Image
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Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 6P: BIORENTION BASIN 2A
Pond 6P: BIORENTION BASIN 2A
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Pond 6P: BIORENTION BASIN 2A
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NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 12/19/2025
Analysis - Proposed Conditions NO Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions L
Hydrograph for Pond 6P: BIORENTION BASIN 2A
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Primary (cfs)
0.000.00094.300.00
2.000.00094.300.00
4.000.00094.300.00
6.000.00094.300.00
8.000.00094.300.00
10.000.00094.300.00
12.000.00094.300.00
14.000.025994.900.02
16.000.015794.880.01
18.000.015594.870.01
20.000.015594.860.01
22.000.015494.860.01
24.000.015494.860.01
26.000.004894.810.00
28.000.004794.800.00
30.000.004794.800.00
32.000.004794.800.00
34.000.004794.800.00
36.000.004794.800.00
38.000.004794.800.00
40.000.004794.800.00
42.000.004794.800.00
44.000.004794.800.00
46.000.004794.800.00
48.000.004794.800.00
50.000.004794.800.00
52.000.004794.800.00
54.000.004794.800.00
56.000.004794.800.00
58.000.004794.800.00
60.000.004794.800.00
62.000.004794.800.00
64.000.004794.800.00
66.000.004794.800.00
68.000.004794.800.00
70.000.004794.800.00
72.000.004794.800.00
Page 182
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 6P: BIORENTION BASIN 2A
Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)
94.300.0094.820.0095.340.11
94.310.0094.830.0095.350.11
94.320.0094.840.0095.360.11
94.330.0094.850.0095.370.11
94.340.0094.860.0195.380.11
94.350.0094.870.0195.390.11
94.360.0094.880.0195.400.12
94.370.0094.890.0195.410.12
94.380.0094.900.0295.420.12
94.390.0094.910.0295.430.12
94.400.0094.920.0295.440.12
94.410.0094.930.0395.450.12
94.420.0094.940.0395.460.12
94.430.0094.950.0395.470.12
94.440.0094.960.0495.480.12
94.450.0094.970.0495.490.13
94.460.0094.980.0595.500.13
94.470.0094.990.0595.510.18
94.480.0095.000.0595.520.28
94.490.0095.010.0595.530.40
94.500.0095.020.0695.540.55
94.510.0095.030.0695.550.72
94.520.0095.040.0695.560.90
94.530.0095.050.0695.571.10
94.540.0095.060.0695.581.32
94.550.0095.070.0795.591.55
94.560.0095.080.0795.601.79
94.570.0095.090.0795.612.05
94.580.0095.100.0795.622.31
94.590.0095.110.0795.632.59
94.600.0095.120.0895.642.88
94.610.0095.130.0895.653.18
94.620.0095.140.0895.663.49
94.630.0095.150.0895.673.81
94.640.0095.160.0895.684.14
94.650.0095.170.0895.694.48
94.660.0095.180.0995.704.83
94.670.0095.190.0995.715.18
94.680.0095.200.0995.725.55
94.690.0095.210.0995.735.92
94.700.0095.220.0995.746.30
94.710.0095.230.0995.756.69
94.720.0095.240.1095.767.09
94.730.0095.250.1095.777.49
94.740.0095.260.1095.787.88
94.750.0095.270.1095.797.89
94.760.0095.280.1095.807.90
94.770.0095.290.1095.817.92
94.780.0095.300.1095.827.93
94.790.0095.310.1095.837.94
94.800.0095.320.1195.847.95
94.810.0095.330.1195.857.97
Elevation (feet)Primary (cfs)
95.867.98
95.877.99
95.888.00
95.898.02
95.908.03
95.918.04
95.928.05
95.938.07
95.948.08
95.958.09
95.968.10
95.978.12
95.988.13
95.998.14
96.008.15
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Area-Storage for Pond 6P: BIORENTION BASIN 2A
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
94.3063095.34206134
94.3265195.36210138
94.3468395.38213142
94.3670495.40216147
94.3873595.42220151
94.4075795.44223156
94.4278895.46227160
94.44801095.48230165
94.46821295.50234169
94.48851395.52237174
94.50871595.54240179
94.52901795.56244184
94.54921995.58247188
94.56952095.60251193
94.58972295.62254198
94.60992495.64257204
94.621022695.66261209
94.641042895.68264214
94.661073195.70268219
94.681093395.72271225
94.701123595.74275230
94.721143795.76278236
94.741163995.78281241
94.761194295.80285247
94.781214495.82288253
94.801244795.84292258
94.821264995.86295264
94.841295295.88298270
94.861315495.90302276
94.881335795.92305282
94.901366095.94309289
94.921386295.96312295
94.941416595.98316301
94.961436896.00319307
94.9814671
95.0014874
95.0215177
95.0415580
95.0615883
95.0816286
95.1016590
95.1216993
95.1417296
95.16175100
95.18179103
95.20182107
95.22186111
95.24189114
95.26192118
95.28196122
95.30199126
95.32203130
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Analysis - Proposed Conditions NOAA 24-hr D 10 YR-C Rainfall=5.38" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 185
Summary for Pond 8P: INFILTRATION BASIN 3
Inflow Area =38,333 sf,22.73% Impervious,Inflow Depth = 1.36" for 10 YR-C event
Inflow =0.67 cfs @12.19 hrs,Volume= 4,330 cf
Outflow =0.27 cfs @12.17 hrs,Volume= 4,330 cf, Atten= 60%, Lag= 0.0 min
Discarded =0.27 cfs @12.17 hrs,Volume= 4,330 cf
Primary =0.00 cfs @0.00 hrs,Volume= 0 cf
Routed to Link 34L : POA 3
Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 91.01' @ 12.50 hrs Surf.Area= 1,150 sf Storage= 294 cf
Plug-Flow detention time=3.5 min calculated for 4,330 cf (100% of inflow) Center-of-Mass det. time=3.5 min (875.6 - 872.1)
VolumeInvertAvail.StorageStorage Description
#190.75'4,888 cfCustom Stage Data (Prismatic)Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
90.75 95.001,150 1,1500 4,8880 4,888
DeviceRoutingInvertOutlet Devices
#1Device 392.75'2.5" Vert. Orifice C= 0.600 Limited to weir flow at low heads
#2Device 394.50'48.0" x 48.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads
#3Primary92.75'12.0" Round Culvert L= 7.0' RCP, groove end projecting, Ke= 0.200 Inlet / Outlet Invert= 92.75' / 92.65' S= 0.0143 ' /' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 0.79 sf
#4Discarded90.75'10.000 in/hr Exfiltration over Surface area Phase-In= 0.01'
Discarded OutFlow Max=0.27 cfs @ 12.17 hrs HW=90.80' (Free Discharge) 4=Exfiltration (Exfiltration Controls 0.27 cfs)
Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=90.75' TW=0.00' (Dynamic Tailwater) 3=Culvert ( Controls 0.00 cfs) 1=Orifice ( Controls 0.00 cfs) 2=Grate ( Controls 0.00 cfs)
Discarded OutFlow Max=0.27 cfs @ 12.17 hrs HW=90.80' (Free Discharge) 4=Exfiltration (Exfiltration Controls 0.27 cfs) Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=90.75' TW=0.00' (Dynamic Tailwater) 3=Culvert (Controls 0.00 cfs) 1=Orifice (Controls 0.00 cfs) 2=Grate (Controls 0.00 cfs) Pond 8P: INFILTRATION BASIN 3 Grate Civilist Exfiltration
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 8P: INFILTRATION BASIN 3
Pond 8P: INFILTRATION BASIN 3
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Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 12/19/2025 ons LLC Page 187
Pond 8P: INFILTRATION BASIN 3
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 8P: INFILTRATION BASIN 3
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Outflow (cfs)Discarded (cfs)Primary (cfs)
0.000.00090.750.000.000.00
2.000.00090.750.000.000.00
4.000.01090.750.010.010.00
6.000.01190.750.010.010.00
8.000.02190.750.020.020.00
10.000.04290.750.040.040.00
12.000.12590.750.110.110.00
14.000.13590.750.130.130.00
16.000.08390.750.080.080.00
18.000.04290.750.040.040.00
20.000.03190.750.030.030.00
22.000.03190.750.030.030.00
24.000.02190.750.020.020.00
26.000.00090.750.000.000.00
28.000.00090.750.000.000.00
30.000.00090.750.000.000.00
32.000.00090.750.000.000.00
34.000.00090.750.000.000.00
36.000.00090.750.000.000.00
38.000.00090.750.000.000.00
40.000.00090.750.000.000.00
42.000.00090.750.000.000.00
44.000.00090.750.000.000.00
46.000.00090.750.000.000.00
48.000.00090.750.000.000.00
50.000.00090.750.000.000.00
52.000.00090.750.000.000.00
54.000.00090.750.000.000.00
56.000.00090.750.000.000.00
58.000.00090.750.000.000.00
60.000.00090.750.000.000.00
62.000.00090.750.000.000.00
64.000.00090.750.000.000.00
66.000.00090.750.000.000.00
68.000.00090.750.000.000.00
70.000.00090.750.000.000.00
72.000.00090.750.000.000.00
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 8P: INFILTRATION BASIN 3
Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)
90.750.000.000.0093.350.380.270.12
90.800.270.270.0093.400.390.270.12
90.850.270.270.0093.450.390.270.13
90.900.270.270.0093.500.400.270.13
90.950.270.270.0093.550.400.270.14
91.000.270.270.0093.600.410.270.14
91.050.270.270.0093.650.410.270.15
91.100.270.270.0093.700.420.270.15
91.150.270.270.0093.750.420.270.16
91.200.270.270.0093.800.430.270.16
91.250.270.270.0093.850.430.270.16
91.300.270.270.0093.900.430.270.17
91.350.270.270.0093.950.440.270.17
91.400.270.270.0094.000.440.270.18
91.450.270.270.0094.050.450.270.18
91.500.270.270.0094.100.450.270.18
91.550.270.270.0094.150.450.270.19
91.600.270.270.0094.200.460.270.19
91.650.270.270.0094.250.460.270.19
91.700.270.270.0094.300.460.270.20
91.750.270.270.0094.350.470.270.20
91.800.270.270.0094.400.470.270.20
91.850.270.270.0094.450.470.270.21
91.900.270.270.0094.500.480.270.21
91.950.270.270.0094.551.060.270.80
92.000.270.270.0094.602.140.271.87
92.050.270.270.0094.653.530.273.26
92.100.270.270.0094.705.170.274.90
92.150.270.270.0094.755.880.275.61
92.200.270.270.0094.806.000.275.74
92.250.270.270.0094.856.130.275.86
92.300.270.270.0094.906.250.275.98
92.350.270.270.0094.956.370.276.10
92.400.270.270.0095.006.480.276.22
92.450.270.270.00
92.500.270.270.00
92.550.270.270.00
92.600.270.270.00
92.650.270.270.00
92.700.270.270.00
92.750.270.270.00
92.800.270.270.00
92.850.280.270.02
92.900.300.270.03
92.950.320.270.05
93.000.330.270.06
93.050.340.270.07
93.100.350.270.08
93.150.360.270.09
93.200.360.270.10
93.250.370.270.10
93.300.380.270.11
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NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 12/19/2025
YR-C Rainfall=5.38" Printed 12/19/2025 Page 190
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Area-Storage for Pond 8P: INFILTRATION BASIN 3
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
90.751,150093.351,1502,990
90.801,1505793.401,1503,048
90.851,15011593.451,1503,105
90.901,15017393.501,1503,163
90.951,15023093.551,1503,220
91.001,15028893.601,1503,277
91.051,15034593.651,1503,335
91.101,15040293.701,1503,393
91.151,15046093.751,1503,450
91.201,15051893.801,1503,507
91.251,15057593.851,1503,565
91.301,15063293.901,1503,623
91.351,15069093.951,1503,680
91.401,15074894.001,1503,738
91.451,15080594.051,1503,795
91.501,15086394.101,1503,852
91.551,15092094.151,1503,910
91.601,15097794.201,1503,968
91.651,1501,03594.251,1504,025
91.701,1501,09394.301,1504,082
91.751,1501,15094.351,1504,140
91.801,1501,20794.401,1504,198
91.851,1501,26594.451,1504,255
91.901,1501,32394.501,1504,313
91.951,1501,38094.551,1504,370
92.001,1501,43894.601,1504,427
92.051,1501,49594.651,1504,485
92.101,1501,55294.701,1504,543
92.151,1501,61094.751,1504,600
92.201,1501,66894.801,1504,657
92.251,1501,72594.851,1504,715
92.301,1501,78294.901,1504,773
92.351,1501,84094.951,1504,830
92.401,1501,89895.001,1504,888
92.451,1501,955
92.501,1502,013
92.551,1502,070
92.601,1502,127
92.651,1502,185
92.701,1502,243
92.751,1502,300
92.801,1502,357
92.851,1502,415
92.901,1502,473
92.951,1502,530
93.001,1502,588
93.051,1502,645
93.101,1502,702
93.151,1502,760
93.201,1502,818
93.251,1502,875
93.301,1502,932
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Analysis - Proposed Conditions NOAA 24-hr D 10 YR-C Rainfall=5.38" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 191
Summary for Pond 10P: PERVIOUS PAVEMENT 2B
Intlow Area = 8,276 sf,100.00% Impervious, Inflow Depth = 5.14" for 10 YR-C event Inflow = 0.89 cfs @ 12.12 hrs, Volume= 3,547 cf Outflow = 0.56 cfs @ 12.22 hrs, Volume= 3,543 cf, Atten= 36%, Lag= 5.9 min Primary = 0.56 cfs @ 12.22 hrs, Volume= 3,543 cf Routed to Pond 33P : INFILTRATION BASIN 2 Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 94.84' @ 12.22 hrs Surf.Area= 9,225 sf Storage= 966 cf Plug-Flow detention time= 92.3 min calculated for 3,542 cf (100% of inflow) Center-of-Mass det. time= 91.8 min ( 840.9 - 749.1 )
VolumeInvertAvail.StorageStorage Description
#193.80'615 cfStone Storage Bed (Prismatic)Listed below (Recalc) 1,538 cf Overall ร— 40.0% Voids
#294.30'231 cfSurface and Base Course (Prismatic) Listed below (Recalc) 1,538 cf Overall ร— 15.0% Voids
#394.80'1,538 cfSurface (Prismatic) Listed below (Recalc)
2,383 cfTotal Available Storage
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
93.803,07500
94.303,0751,5381,538
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
94.303,07500
94.803,0751,5381,538
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
94.803,07500
95.303,0751,5381,538
DeviceRoutingInvertOutlet Devices
#1Device 393.80'2.5" Vert. Orifice C = 0.600
#2Device 394.80'48.0" x 48.0" Horiz. Grate C = 0.600
#3Primary92.08'12.0" Round Culvert L = 38.0' RCP, groove end projecting, Ke = 0.200Inlet / Outlet Invert= $ 92.08'/91.65' $ S = 0.0113'/' Cc = 0.900n=0.011, Flow Area=0.79 sf
Primary OutFlow Max=0.56 cfs @ 12.22 hrs HW=94.84' TW=92.00' (Dynamic Tailwater) 3=Culvert (Passes 0.56 cfs of 6.51 cfs potential flow) 1=Orifice (Orifice Controls 0.16 cfs @ 4.66 fps) 2=Grate (Weir Controls 0.41 cfs @ 0.65 fps)
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Analysis - Proposed Conditions NOAA 24 Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 10P: PERVIOUS PAVEMENT 2B
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Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 10P: PERVIOUS PAVEMENT 2B
Pond 10P: PERVIOUS PAVEMENT 2B
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NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 12/19/2025
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LL
Hydrograph for Pond 10P: PERVIOUS PAVEMENT 2B
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Primary (cfs)
0.000.00093.800.00
2.000.011593.810.00
4.000.016793.850.01
6.000.0210393.880.01
8.000.0313593.910.02
10.000.0518393.950.03
12.000.5161494.300.10
14.000.0560994.300.10
16.000.0328894.030.06
18.000.0216093.930.03
20.000.0212693.900.02
22.000.0111493.890.02
24.000.0110393.880.01
26.000.005593.840.00
28.000.003693.830.00
30.000.002793.820.00
32.000.002193.820.00
34.000.001893.810.00
36.000.001593.810.00
38.000.001393.810.00
40.000.001293.810.00
42.000.001193.810.00
44.000.001093.810.00
46.000.00993.810.00
48.000.00893.810.00
50.000.00793.810.00
52.000.00793.810.00
54.000.00793.810.00
56.000.00693.800.00
58.000.00693.800.00
60.000.00593.800.00
62.000.00593.800.00
64.000.00593.800.00
66.000.00593.800.00
68.000.00493.800.00
70.000.00493.800.00
72.000.00493.800.00
Page 194
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 10P: PERVIOUS PAVEMENT 2B
Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)
93.800.0094.320.1194.840.58
93.810.0094.330.1194.850.74
93.820.0094.340.1194.860.93
93.830.0094.350.1194.871.13
93.840.0094.360.1194.881.35
93.850.0094.370.1194.891.58
93.860.0194.380.1194.901.82
93.870.0194.390.1194.912.07
93.880.0194.400.1294.922.34
93.890.0194.410.1294.932.62
93.900.0294.420.1294.942.91
93.910.0294.430.1294.953.21
93.920.0294.440.1294.963.52
93.930.0394.450.1294.973.84
93.940.0394.460.1294.984.17
93.950.0394.470.1294.994.50
93.960.0494.480.1295.004.85
93.970.0494.490.1395.015.21
93.980.0594.500.1395.025.57
93.990.0594.510.1395.035.95
94.000.0594.520.1395.046.33
94.010.0594.530.1395.056.72
94.020.0694.540.1395.066.83
94.030.0694.550.1395.076.84
94.040.0694.560.1395.086.86
94.050.0694.570.1395.096.87
94.060.0694.580.1395.106.88
94.070.0794.590.1495.116.90
94.080.0794.600.1495.126.91
94.090.0794.610.1495.136.93
94.100.0794.620.1495.146.94
94.110.0794.630.1495.156.95
94.120.0894.640.1495.166.97
94.130.0894.650.1495.176.98
94.140.0894.660.1495.186.99
94.150.0894.670.1495.197.01
94.160.0894.680.1495.207.02
94.170.0894.690.1595.217.04
94.180.0994.700.1595.227.05
94.190.0994.710.1595.237.06
94.200.0994.720.1595.247.08
94.210.0994.730.1595.257.09
94.220.0994.740.1595.267.10
94.230.0994.750.1595.277.12
94.240.1094.760.1595.287.13
94.250.1094.770.1595.297.15
94.260.1094.780.1595.307.16
94.270.1094.790.15
94.280.1094.800.16
94.290.1094.810.21
94.300.1094.820.31
94.310.1094.830.43
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NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 12/19/2025
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Printed 12/19/2025 Page 196
Stage-Area-Storage for Pond 10P: PERVIOUS PAVEMENT 2B
Elevation (feet)Storage (cubic-feet)Elevation (feet)Storage (cubic-feet)Elevation (feet)Storage (cubic-feet)
93.80094.3262494.84969
93.811294.3362994.85999
93.822594.3463394.861,030
93.833794.3563894.871,061
93.844994.3664394.881,092
93.856194.3764794.891,122
93.867494.3865294.901,153
93.878694.3965794.911,184
93.889894.4066194.921,215
93.8911194.4166694.931,245
93.9012394.4267094.941,276
93.9113594.4367594.951,307
93.9214894.4468094.961,338
93.9316094.4568494.971,368
93.9417294.4668994.981,399
93.9518594.4769394.991,430
93.9619794.4869895.001,461
93.9720994.4970395.011,491
93.9822194.5070795.021,522
93.9923494.5171295.031,553
94.0024694.5271695.041,584
94.0125894.5372195.051,614
94.0227194.5472695.061,645
94.0328394.5573095.071,676
94.0429594.5673595.081,707
94.0530894.5774095.091,737
94.0632094.5874495.101,768
94.0733294.5974995.111,799
94.0834494.6075395.121,830
94.0935794.6175895.131,860
94.1036994.6276395.141,891
94.1138194.6376795.151,922
94.1239494.6477295.161,953
94.1340694.6577695.171,983
94.1441894.6678195.182,014
94.1543094.6778695.192,045
94.1644394.6879095.202,076
94.1745594.6979595.212,106
94.1846794.7080095.222,137
94.1948094.7180495.232,168
94.2049294.7280995.242,199
94.2150494.7381395.252,229
94.2251794.7481895.262,260
94.2352994.7582395.272,291
94.2454194.7682795.282,322
94.2555494.7783295.292,352
94.2656694.7883695.302,383
94.2757894.79841
94.2859094.80846
94.2960394.81876
94.3061594.82907
94.3162094.83938
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Analysis - Proposed Conditions NOAA 24-hr D 10 YR-C Rainfall=5.38" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 197
Summary for Pond 15P: PERVIOUS PAVEMENT 3B
Intlow Area = 8,712 sf,100.00% Impervious, Inflow Depth = 5.14" for 10 YR-C event Inflow = 0.93 cfs @ 12.12 hrs, Volume= 3,734 cf Outflow = 0.67 cfs @ 12.19 hrs, Volume= 3,730 cf, Atten= 28%, Lag= 4.3 min Primary = 0.67 cfs @ 12.19 hrs, Volume= 3,730 cf Routed to Pond 8P : INFILTRATION BASIN 3 Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 94.85' @ 12.19 hrs Surf.Area= 8,889 sf Storage= 951 cf Plug-Flow detention time= 86.6 min calculated for 3,730 cf (100% of inflow) Center-of-Mass det. time= 85.9 min ( 834.9 - 749.1 )
VolumeInvertAvail.StorageStorage Description
#193.80'593 cfStone Storage Bed (Prismatic)Listed below (Recalc) 1,482 cf Overall ร— 40.0% Voids
#294.30'222 cfSurface and Base Course (Prismatic)Listed below (Recalc) 1,482 cf Overall ร— 15.0% Voids
#394.80'1,482 cfSurface (Prismatic)Listed below (Recalc)
2,296 cfTotal Available Storage
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
93.802,96300
94.302,9631,4821,482
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
94.302,96300
94.802,9631,4821,482
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
94.802,96300
95.302,9631,4821,482
DeviceRoutingInvertOutlet Devices
#1Device 393.80'2.5" Vert. Orifice C = 0.600
#2Device 394.80'48.0" x 48.0" Horiz. Grate C = 0.600
#3Primary92.00'12.0" Round Culvert L = 52.0' RCP, groove end projecting, Ke = 0.200Inlet / Outlet Invert= $ 92.00'/90.75' $ S = 0.0240'/ Cc = 0.900n=0.011, Flow Area=0.79 sf
Primary OutFlow Max=0.67 cfs @ 12.19 hrs HW=94.85' TW=90.83' (Dynamic Tailwater) 3=Culvert (Passes 0.67 cfs of 7.21 cfs potential flow) 1=Orifice (Orifice Controls 0.16 cfs @ 4.67 fps) 2=Grate (Weir Controls 0.51 cfs @ 0.70 fps)
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NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 12/19/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
ainfall=5.38" 12/19/2025 Page 198
Pond 15P: PERVIOUS PAVEMENT 3B
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NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 12/19/2025 ons LLC Page 199
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCAD\circledR 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 15P: PERVIOUS PAVEMENT 3B
Pond 15P: PERVIOUS PAVEMENT 3B
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Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LL
Hydrograph for Pond 15P: PERVIOUS PAVEMENT 3B
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Primary (cfs)
0.000.00093.800.00
2.000.011693.810.00
4.000.016993.860.01
6.000.0210393.890.01
8.000.0313593.910.02
10.000.0518493.950.04
12.000.5363694.400.12
14.000.0559294.300.10
16.000.0328094.040.06
18.000.0215693.930.03
20.000.0212493.900.02
22.000.0111293.890.02
24.000.0110293.890.01
26.000.005393.840.00
28.000.003593.830.00
30.000.002693.820.00
32.000.002093.820.00
34.000.001793.810.00
36.000.001493.810.00
38.000.001293.810.00
40.000.001193.810.00
42.000.001093.810.00
44.000.00993.810.00
46.000.00893.810.00
48.000.00893.810.00
50.000.00793.810.00
52.000.00693.810.00
54.000.00693.810.00
56.000.00693.800.00
58.000.00593.800.00
60.000.00593.800.00
62.000.00593.800.00
64.000.00593.800.00
66.000.00493.800.00
68.000.00493.800.00
70.000.00493.800.00
72.000.00493.800.00
Page 368 Download HTML
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 15P: PERVIOUS PAVEMENT 3B
Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)
93.800.0094.320.1194.840.58
93.810.0094.330.1194.850.74
93.820.0094.340.1194.860.93
93.830.0094.350.1194.871.13
93.840.0094.360.1194.881.35
93.850.0094.370.1194.891.58
93.860.0194.380.1194.901.82
93.870.0194.390.1194.912.07
93.880.0194.400.1294.922.34
93.890.0194.410.1294.932.62
93.900.0294.420.1294.942.91
93.910.0294.430.1294.953.21
93.920.0294.440.1294.963.52
93.930.0394.450.1294.973.84
93.940.0394.460.1294.984.17
93.950.0394.470.1294.994.50
93.960.0494.480.1295.004.85
93.970.0494.490.1395.015.21
93.980.0594.500.1395.025.57
93.990.0594.510.1395.035.95
94.000.0594.520.1395.046.33
94.010.0594.530.1395.056.72
94.020.0694.540.1395.067.11
94.030.0694.550.1395.077.46
94.040.0694.560.1395.087.47
94.050.0694.570.1395.097.48
94.060.0694.580.1395.107.50
94.070.0794.590.1495.117.51
94.080.0794.600.1495.127.52
94.090.0794.610.1495.137.53
94.100.0794.620.1495.147.54
94.110.0794.630.1495.157.55
94.120.0894.640.1495.167.56
94.130.0894.650.1495.177.57
94.140.0894.660.1495.187.58
94.150.0894.670.1495.197.60
94.160.0894.680.1495.207.61
94.170.0894.690.1595.217.62
94.180.0994.700.1595.227.63
94.190.0994.710.1595.237.64
94.200.0994.720.1595.247.65
94.210.0994.730.1595.257.66
94.220.0994.740.1595.267.67
94.230.0994.750.1595.277.68
94.240.1094.760.1595.287.69
94.250.1094.770.1595.297.70
94.260.1094.780.1595.307.72
94.270.1094.790.15
94.280.1094.800.16
94.290.1094.810.21
94.300.1094.820.31
94.310.1094.830.43
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Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Printed 12/19/2025 Page 202
Stage-Area-Storage for Pond 15P: PERVIOUS PAVEMENT 3B
Elevation (feet)Storage (cubic-feet)Elevation (feet)Storage (cubic-feet)Elevation (feet)Storage (cubic-feet)
93.80094.3260194.84933
93.811294.3360694.85963
93.822494.3461094.86993
93.833694.3561594.871,022
93.844794.3661994.881,052
93.855994.3762494.891,081
93.867194.3862894.901,111
93.878394.3963394.911,141
93.889594.4063794.921,170
93.8910794.4164194.931,200
93.9011994.4264694.941,230
93.9113094.4365094.951,259
93.9214294.4465594.961,289
93.9315494.4565994.971,319
93.9416694.4666494.981,348
93.9517894.4766894.991,378
93.9619094.4867395.001,407
93.9720194.4967795.011,437
93.9821394.5068195.021,467
93.9922594.5168695.031,496
94.0023794.5269095.041,526
94.0124994.5369595.051,556
94.0226194.5469995.061,585
94.0327394.5570495.071,615
94.0428494.5670895.081,644
94.0529694.5771395.091,674
94.0630894.5871795.101,704
94.0732094.5972195.111,733
94.0833294.6072695.121,763
94.0934494.6173095.131,793
94.1035694.6273595.141,822
94.1136794.6373995.151,852
94.1237994.6474495.161,882
94.1339194.6574895.171,911
94.1440394.6675395.181,941
94.1541594.6775795.191,970
94.1642794.6876195.202,000
94.1743994.6976695.212,030
94.1845094.7077095.222,059
94.1946294.7177595.232,089
94.2047494.7277995.242,119
94.2148694.7378495.252,148
94.2249894.7478895.262,178
94.2351094.7579395.272,207
94.2452194.7679795.282,237
94.2553394.7780195.292,267
94.2654594.7880695.302,296
94.2755794.79810
94.2856994.80815
94.2958194.81844
94.3059394.82874
94.3159794.83904
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Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 33P: INFILTRATION BASIN 2
Inflow Area = 27,007 sf, 30.65% Impervious, Inflow Depth = 1.75" for 10 YR-C event
Inflow = 0.56 cfs @ 12.22 hrs, Volume= 3,938 cf
Outflow = 0.11 cfs @ 14.32 hrs, Volume= 3,938 cf, Atten= 80%, Lag= 126.0 min
Discarded = 0.11 cfs @ 14.32 hrs, Volume= 3,938 cf
Primary = 0.00 cfs @ 0.00 hrs, Volume= 0 cf
Routed to Link 33L : POA 2
Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs
Peak Elev= 92.72' @ 14.32 hrs Surf.Area= 971 sf Storage= 790 cf
Plug-Flow detention time= 63.1 min calculated for 3,938 cf (100% of inflow)
Center-of-Mass det. time= 63.1 min ( 926.6 - 863.5 )
Volume Invert Avail.Storage Storage Description
#1 91.65' 4,378 cf Custom Stage Data (Prismatic)Listed below (Recalc)
Elevation Surf.Area Inc.Store Cum.Store
(feet) (sq-ft) (cubic-feet) (cubic-feet)
91.65 520 0 0
92.00 651 205 205
93.00 1,094 873 1,077
94.00 1,629 1,362 2,439
95.00 2,249 1,939 4,378
Device Routing Invert Outlet Devices
#1 Device 3 93.65' 2.5" Vert. Orifice C= 0.600 Limited to weir flow at low heads
#2 Device 3 94.70' 48.0" x 48.0" Horiz. Grate C= 0.600
#3 Primary 93.65' 12.0" Round Culvert L= 17.0' RCP, groove end projecting, Ke= 0.200
Inlet / Outlet Invert= 93.65' / 93.50' S= 0.0088''' Cc= 0.900
n= 0.012 Concrete pipe, finished, Flow Area= 0.79 sf
#4 Discarded 91.65' 4.950 in/hr Exfiltration over Surface area Phase-In= 0.01'
Discarded OutFlow Max=0.11 cfs @ 14.32 hrs HW=92.72' (Free Discharge)
4=Exfiltration (Exfiltration Controls 0.11 cfs)
Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=91.65' TW=0.00' (Dynamic Tailwater)
3=Culvert ( Controls 0.00 cfs)
1=Orifice ( Controls 0.00 cfs)
2=Grate ( Controls 0.00 cfs)
Pond 33P: INFILTRATION BASIN 2 [F3]
Exfiltration
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Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 33P: INFILTRATION BASIN 2
Pond 33P: INFILTRATION BASIN 2
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Pond 33P: INFILTRATION BASIN 2
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Hydrograph for Pond 33P: INFILTRATION BASIN 2
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Outflow (cfs)Discarded (cfs)Primary (cfs)
0.000.00091.650.000.000.00
2.000.00091.650.000.000.00
4.000.01091.650.010.010.00
6.000.01191.650.010.010.00
8.000.02291.650.020.020.00
10.000.03391.660.030.030.00
12.000.104291.730.060.060.00
14.000.1278592.720.110.110.00
16.000.0767692.600.110.110.00
18.000.0435292.210.090.090.00
20.000.033791.720.060.060.00
22.000.02291.650.020.020.00
24.000.02291.650.020.020.00
26.000.00091.650.000.000.00
28.000.00091.650.000.000.00
30.000.00091.650.000.000.00
32.000.00091.650.000.000.00
34.000.00091.650.000.000.00
36.000.00091.650.000.000.00
38.000.00091.650.000.000.00
40.000.00091.650.000.000.00
42.000.00091.650.000.000.00
44.000.00091.650.000.000.00
46.000.00091.650.000.000.00
48.000.00091.650.000.000.00
50.000.00091.650.000.000.00
52.000.00091.650.000.000.00
54.000.00091.650.000.000.00
56.000.00091.650.000.000.00
58.000.00091.650.000.000.00
60.000.00091.650.000.000.00
62.000.00091.650.000.000.00
64.000.00091.650.000.000.00
66.000.00091.650.000.000.00
68.000.00091.650.000.000.00
70.000.00091.650.000.000.00
72.000.00091.650.000.000.00
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Stage-Discharge for Pond 33P: INFILTRATION BASIN 2
Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)
91.650.000.000.0094.250.320.200.12
91.700.060.060.0094.300.330.210.12
91.750.060.060.0094.350.340.210.13
91.800.070.070.0094.400.350.220.13
91.850.070.070.0094.450.360.220.14
91.900.070.070.0094.500.360.220.14
91.950.070.070.0094.550.370.230.15
92.000.070.070.0094.600.380.230.15
92.050.080.080.0094.650.390.230.16
92.100.080.080.0094.700.400.240.16
92.150.080.080.0094.750.990.240.75
92.200.080.080.0094.802.070.241.82
92.250.090.090.0094.853.460.253.21
92.300.090.090.0094.903.580.253.33
92.350.090.090.0094.953.670.253.41
92.400.090.090.0095.003.720.263.46
92.450.100.100.00
92.500.100.100.00
92.550.100.100.00
92.600.110.110.00
92.650.110.110.00
92.700.110.110.00
92.750.110.110.00
92.800.120.120.00
92.850.120.120.00
92.900.120.120.00
92.950.120.120.00
93.000.130.130.00
93.050.130.130.00
93.100.130.130.00
93.150.130.130.00
93.200.140.140.00
93.250.140.140.00
93.300.140.140.00
93.350.150.150.00
93.400.150.150.00
93.450.150.150.00
93.500.160.160.00
93.550.160.160.00
93.600.160.160.00
93.650.170.170.00
93.700.170.170.00
93.750.190.170.02
93.800.210.170.03
93.850.230.180.05
93.900.240.180.06
93.950.260.180.07
94.000.270.190.08
94.050.280.190.09
94.100.290.190.10
94.150.300.200.10
94.200.310.200.11
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Stage-Area-Storage for Pond 33P: INFILTRATION BASIN 2
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
91.655200
91.7053926
91.7555754
91.8057682
91.85595111
91.90614142
91.95632173
92.00651205
92.05673238
92.10695272
92.15717308
92.20740344
92.25762382
92.30784420
92.35806460
92.40828501
92.45850543
92.50873586
92.55895630
92.60917675
92.65939722
92.70961769
92.75983818
92.801,005867
92.851,028918
92.901,050970
92.951,0721,023
93.001,0941,077
93.051,1211,133
93.101,1481,190
93.151,1741,248
93.201,2011,307
93.251,2281,368
93.301,2551,430
93.351,2811,493
93.401,3081,558
93.451,3351,624
93.501,3621,691
93.551,3881,760
93.601,4151,830
93.651,4421,902
93.701,4691,974
93.751,4952,048
93.801,5222,124
93.851,5492,201
93.901,5762,279
93.951,6022,358
94.001,6292,439
94.051,6602,521
94.101,6912,605
94.151,7222,690
94.201,7532,777
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
94.251,7842,866
94.301,8152,956
94.351,8463,047
94.401,8773,140
94.451,9083,235
94.501,9393,331
94.551,9703,429
94.602,0013,528
94.652,0323,629
94.702,0633,731
94.752,0943,835
94.802,1253,941
94.852,1564,048
94.902,1874,156
94.952,2184,266
95.002,2494,378
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Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 42P: BIORENTION BASIN 3A
Inflow Area = 29,621 sf, 0.00% Impervious, Inflow Depth = 0.28" for 10 YR-C event Inflow = 0.04 cfs @ 12.98 hrs, Volume = 700 cf Outflow = 0.02 cfs @ 14.27 hrs, Volume = 600 cf, Atten = 32%, Lag = 77.0 min Primary = 0.02 cfs @ 14.27 hrs, Volume = 600 cf Routed to Pond 8P : INFILTRATION BASIN 3
Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 93.92' @ 14.27 hrs Surf.Area= 378 sf Storage= 141 cf Plug-Flow detention time= 139.0 min calculated for 600 cf (86% of inflow) Center-of-Mass det. time= 80.7 min (1,103.3 - 1,022.6)
VolumeInvertAvail.StorageStorage Description
#193.30'1,041 cfCustom Stage Data (Prismatic)Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
93.307700
94.00417173173
95.001,3198681,041
DeviceRoutingInvertOutlet Devices
#1Device 393.80'2.5" Vert. Orifice C= 0.600 Limited to weir flow at low heads
#2Device 394.50'48.0" x 48.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads
#3Primary90.80'12.0" Round Culvert L= 11.0' RCP, groove end projecting, Ke= 0.200 Inlet / Outlet Invert= 90.80' / 90.75' S= 0.0045 ' /' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 0.79 sf
Primary OutFlow Max=0.02 cfs @ 14.27 hrs HW=93.92' TW=90.75' (Dynamic Tailwater) 3=Culvert (Passes 0.02 cfs of 7.59 cfs potential flow) 1=Orifice (Orifice Controls 0.02 cfs @ 1.18 fps) 2=Grate ( Controls 0.00 cfs)
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Pond 42P: BIORENTION BASIN 3A
Pond 42P: BIORENTION BASIN 3A
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Pond 42P: BIORENTION BASIN 3A
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Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LL
Hydrograph for Pond 42P: BIORENTION BASIN 3A
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Primary (cfs)
0.000.00093.300.00
2.000.00093.300.00
4.000.00093.300.00
6.000.00093.300.00
8.000.00093.300.00
10.000.00093.300.00
12.000.00093.300.00
14.000.0314093.920.02
16.000.0213493.900.02
18.000.0113093.890.01
20.000.0112793.880.01
22.000.0112693.880.01
24.000.0112493.870.01
26.000.0010693.820.00
28.000.0010393.810.00
30.000.0010293.810.00
32.000.0010193.810.00
34.000.0010193.800.00
36.000.0010093.800.00
38.000.0010093.800.00
40.000.0010093.800.00
42.000.0010093.800.00
44.000.0010093.800.00
46.000.0010093.800.00
48.000.0010093.800.00
50.000.0010093.800.00
52.000.0010093.800.00
54.000.0010093.800.00
56.000.0010093.800.00
58.000.0010093.800.00
60.000.0010093.800.00
62.000.0010093.800.00
64.000.0010093.800.00
66.000.0010093.800.00
68.000.0010093.800.00
70.000.0010093.800.00
72.000.009993.800.00
Page 212
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Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 42P: BIORENTION BASIN 3A
Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)
93.300.0093.820.0094.340.11
93.310.0093.830.0094.350.11
93.320.0093.840.0094.360.11
93.330.0093.850.0094.370.11
93.340.0093.860.0194.380.11
93.350.0093.870.0194.390.11
93.360.0093.880.0194.400.12
93.370.0093.890.0194.410.12
93.380.0093.900.0294.420.12
93.390.0093.910.0294.430.12
93.400.0093.920.0294.440.12
93.410.0093.930.0394.450.12
93.420.0093.940.0394.460.12
93.430.0093.950.0394.470.12
93.440.0093.960.0494.480.12
93.450.0093.970.0494.490.13
93.460.0093.980.0594.500.13
93.470.0093.990.0594.510.18
93.480.0094.000.0594.520.28
93.490.0094.010.0594.530.40
93.500.0094.020.0694.540.55
93.510.0094.030.0694.550.72
93.520.0094.040.0694.560.90
93.530.0094.050.0694.571.10
93.540.0094.060.0694.581.32
93.550.0094.070.0794.591.55
93.560.0094.080.0794.601.79
93.570.0094.090.0794.612.05
93.580.0094.100.0794.622.31
93.590.0094.110.0794.632.59
93.600.0094.120.0894.642.88
93.610.0094.130.0894.653.18
93.620.0094.140.0894.663.49
93.630.0094.150.0894.673.81
93.640.0094.160.0894.684.14
93.650.0094.170.0894.694.48
93.660.0094.180.0994.704.83
93.670.0094.190.0994.715.18
93.680.0094.200.0994.725.55
93.690.0094.210.0994.735.92
93.700.0094.220.0994.746.30
93.710.0094.230.0994.756.69
93.720.0094.240.1094.767.09
93.730.0094.250.1094.777.49
93.740.0094.260.1094.787.91
93.750.0094.270.1094.798.33
93.760.0094.280.1094.808.75
93.770.0094.290.1094.818.86
93.780.0094.300.1094.828.87
93.790.0094.310.1094.838.88
93.800.0094.320.1194.848.89
93.810.0094.330.1194.858.91
Elevation (feet)Primary (cfs)
94.868.92
94.878.93
94.888.94
94.898.96
94.908.97
94.918.98
94.928.99
94.939.01
94.949.02
94.959.03
94.969.04
94.979.06
94.989.07
94.999.08
95.009.09
Page 381 Download HTML
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 12/19/2025 ons LLC Page 214
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Area-Storage for Pond 42P: BIORENTION BASIN 3A
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
93.3077094.34724367
93.3287294.36742381
93.3496394.38760396
93.36106594.40778412
93.38116894.42796428
93.401261094.44814444
93.421351394.46832460
93.441451694.48850477
93.461551994.50868494
93.481642294.52886512
93.501742594.54904530
93.521842994.56922548
93.541943294.58940566
93.562033694.60958585
93.582134194.62976605
93.602234594.64994625
93.622325094.661,012645
93.642425494.681,030665
93.662525994.701,048686
93.682626494.721,066707
93.702717094.741,084728
93.722817594.761,103750
93.742918194.781,121773
93.763008794.801,139795
93.783109394.821,157818
93.803209994.841,175841
93.8233010694.861,193865
93.8433911294.881,211889
93.8634911994.901,229914
93.8835912694.921,247938
93.9036813494.941,265963
93.9237814194.961,283989
93.9438814994.981,3011,015
93.9639815795.001,3191,041
93.98407165
94.00417173
94.02435181
94.04453190
94.06471200
94.08489209
94.10507219
94.12525229
94.14543240
94.16561251
94.18579263
94.20597274
94.22615286
94.24633299
94.26652312
94.28670325
94.30688339
94.32706353
Page 382 Download HTML
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 12/19/2025 ons LLC Page 215
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Link 32L: POA1
Inflow Area =73,567 sf,27.76% Impervious,Inflow Depth = 0.00" for 10 YR-C event
Inflow =0.00 cfs @0.00 hrs,0 cf
Primary =0.00 cfs @0.00 hrs,0 cf,
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 32L: POA1
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NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 12/19/2025
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
R-C Rainfall=5.38" Printed 12/19/2025 Page 216
Hydrograph for Link 32L: POA1
Time (hours)Inflow (cfs)Elevation (feet)Primary (cfs)
0.000.000.000.00
1.000.000.000.00
2.000.000.000.00
3.000.000.000.00
4.000.000.000.00
5.000.000.000.00
6.000.000.000.00
7.000.000.000.00
8.000.000.000.00
9.000.000.000.00
10.000.000.000.00
11.000.000.000.00
12.000.000.000.00
13.000.000.000.00
14.000.000.000.00
15.000.000.000.00
16.000.000.000.00
17.000.000.000.00
18.000.000.000.00
19.000.000.000.00
20.000.000.000.00
21.000.000.000.00
22.000.000.000.00
23.000.000.000.00
24.000.000.000.00
25.000.000.000.00
26.000.000.000.00
27.000.000.000.00
28.000.000.000.00
29.000.000.000.00
30.000.000.000.00
31.000.000.000.00
32.000.000.000.00
33.000.000.000.00
34.000.000.000.00
35.000.000.000.00
36.000.000.000.00
37.000.000.000.00
38.000.000.000.00
39.000.000.000.00
40.000.000.000.00
41.000.000.000.00
42.000.000.000.00
43.000.000.000.00
44.000.000.000.00
45.000.000.000.00
46.000.000.000.00
47.000.000.000.00
48.000.000.000.00
49.000.000.000.00
50.000.000.000.00
51.000.000.000.00
Time (hours)Inflow (cfs)Elevation (feet)Primary (cfs)
52.000.000.000.00
53.000.000.000.00
54.000.000.000.00
55.000.000.000.00
56.000.000.000.00
57.000.000.000.00
58.000.000.000.00
59.000.000.000.00
60.000.000.000.00
61.000.000.000.00
62.000.000.000.00
63.000.000.000.00
64.000.000.000.00
65.000.000.000.00
66.000.000.000.00
67.000.000.000.00
68.000.000.000.00
69.000.000.000.00
70.000.000.000.00
71.000.000.000.00
72.000.000.000.00
Page 384 Download HTML
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 12/19/2025
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 217
Summary for Link 33L: POA 2
Inflow Area = 27,007 sf, 30.65% Impervious, Inflow Depth = 0.00" for 10 YR-C event Inflow = 0.00 cfs @ 0.00 hrs, Volume= 0 cf Primary = 0.00 cfs @ 0.00 hrs, Volume= 0 cf, Atten=0%, Lag=0.0 min
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 33L: POA 2
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NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 12/19/2025
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
R-C Rainfall=5.38" Printed 12/19/2025 Page 218
Hydrograph for Link 33L: POA 2
Time (hours)Inflow (cfs)Elevation (feet)Primary (cfs)
0.000.000.000.00
1.000.000.000.00
2.000.000.000.00
3.000.000.000.00
4.000.000.000.00
5.000.000.000.00
6.000.000.000.00
7.000.000.000.00
8.000.000.000.00
9.000.000.000.00
10.000.000.000.00
11.000.000.000.00
12.000.000.000.00
13.000.000.000.00
14.000.000.000.00
15.000.000.000.00
16.000.000.000.00
17.000.000.000.00
18.000.000.000.00
19.000.000.000.00
20.000.000.000.00
21.000.000.000.00
22.000.000.000.00
23.000.000.000.00
24.000.000.000.00
25.000.000.000.00
26.000.000.000.00
27.000.000.000.00
28.000.000.000.00
29.000.000.000.00
30.000.000.000.00
31.000.000.000.00
32.000.000.000.00
33.000.000.000.00
34.000.000.000.00
35.000.000.000.00
36.000.000.000.00
37.000.000.000.00
38.000.000.000.00
39.000.000.000.00
40.000.000.000.00
41.000.000.000.00
42.000.000.000.00
43.000.000.000.00
44.000.000.000.00
45.000.000.000.00
46.000.000.000.00
47.000.000.000.00
48.000.000.000.00
49.000.000.000.00
50.000.000.000.00
51.000.000.000.00
Time (hours)Inflow (cfs)Elevation (feet)Primary (cfs)
52.000.000.000.00
53.000.000.000.00
54.000.000.000.00
55.000.000.000.00
56.000.000.000.00
57.000.000.000.00
58.000.000.000.00
59.000.000.000.00
60.000.000.000.00
61.000.000.000.00
62.000.000.000.00
63.000.000.000.00
64.000.000.000.00
65.000.000.000.00
66.000.000.000.00
67.000.000.000.00
68.000.000.000.00
69.000.000.000.00
70.000.000.000.00
71.000.000.000.00
72.000.000.000.00
Page 386 Download HTML
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 12/19/2025
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 219
Summary for Link 34L: POA 3
Inflow Area = 38,333 sf, 22.73% Impervious, Inflow Depth = 0.00" for 10 YR-C event Inflow = 0.00 cfs @ 0.00 hrs, Volume= 0 cf Primary = 0.00 cfs @ 0.00 hrs, Volume= 0 cf, Atten=0%, Lag=0.0 min
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 34L: POA 3
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NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 12/19/2025
YR-C Rainfall=5.38" Printed 12/19/2025 Page 220
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Link 34L: POA 3
Time (hours)Inflow (cfs)Elevation (feet)Primary (cfs)
0.000.000.000.00
1.000.000.000.00
2.000.000.000.00
3.000.000.000.00
4.000.000.000.00
5.000.000.000.00
6.000.000.000.00
7.000.000.000.00
8.000.000.000.00
9.000.000.000.00
10.000.000.000.00
11.000.000.000.00
12.000.000.000.00
13.000.000.000.00
14.000.000.000.00
15.000.000.000.00
16.000.000.000.00
17.000.000.000.00
18.000.000.000.00
19.000.000.000.00
20.000.000.000.00
21.000.000.000.00
22.000.000.000.00
23.000.000.000.00
24.000.000.000.00
25.000.000.000.00
26.000.000.000.00
27.000.000.000.00
28.000.000.000.00
29.000.000.000.00
30.000.000.000.00
31.000.000.000.00
32.000.000.000.00
33.000.000.000.00
34.000.000.000.00
35.000.000.000.00
36.000.000.000.00
37.000.000.000.00
38.000.000.000.00
39.000.000.000.00
40.000.000.000.00
41.000.000.000.00
42.000.000.000.00
43.000.000.000.00
44.000.000.000.00
45.000.000.000.00
46.000.000.000.00
47.000.000.000.00
48.000.000.000.00
49.000.000.000.00
50.000.000.000.00
51.000.000.000.00
Time (hours)Inflow (cfs)Elevation (feet)Primary (cfs)
52.000.000.000.00
53.000.000.000.00
54.000.000.000.00
55.000.000.000.00
56.000.000.000.00
57.000.000.000.00
58.000.000.000.00
59.000.000.000.00
60.000.000.000.00
61.000.000.000.00
62.000.000.000.00
63.000.000.000.00
64.000.000.000.00
65.000.000.000.00
66.000.000.000.00
67.000.000.000.00
68.000.000.000.00
69.000.000.000.00
70.000.000.000.00
71.000.000.000.00
72.000.000.000.00
Page 388 Download HTML
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 12/19/2025 Page 221
Time span=0.00-72.00 hrs, dt=0.01 hrs, 7201 points Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method
Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method
Subcatchment2S: DA-P1 PERVIOUSRunoff Area=1.220 ac 0.00% Impervious Runoff Depth=0.55" Flow Length=525' Tc=14.2 min CN=39/0 Runoff=0.17 cfs 2,423 cf
Subcatchment3S: DA-P3 PERVIOUSRunoff Area=0.680 ac 0.00% Impervious Runoff Depth=0.55" Flow Length=363' Tc=11.5 min CN=39/0 Runoff=0.10 cfs 1,351 cf
Subcatchment4S: DA-P2 PERVIOUSRunoff Area=0.430 ac 0.00% Impervious Runoff Depth=0.55" Flow Length=168' Slope=0.0300'/' Tc=8.7 min CN=39/0 Runoff=0.07 cfs 854 cf
Subcatchment6S: DA-P3 IMPERVIOUSRunoff Area=0.200 ac 100.00% Impervious Runoff Depth=6.10" Flow Length=155' Tc=4.3 min CN=0/98 Runoff=1.10 cfs 4,430 cf
Subcatchment7S: DA-P2 IMPERVIOUSRunoff Area=0.190 ac 100.00% Impervious Runoff Depth=6.10" Flow Length=172' Tc=4.3 min CN=0/98 Runoff=1.05 cfs 4,208 cf
Subcatchment8S: DA-P1 IMPERVIOUSRunoff Area=0.400 ac 100.00% Impervious Runoff Depth=6.10" Flow Length=372' Slope=0.0200'/' Tc=2.5 min CN=0/98 Runoff=2.49 cfs 8,859 cf
Subcatchment14S: LOT 11 RoofRunoff Area=3,000 sf 100.00% Impervious Runoff Depth=6.10" Flow Length=40' Tc=0.3 min CN=0/98 Runoff=0.46 cfs 1,525 cf
Pond 2P: Subsurface Infiltration Basin 1Peak Elev=87.03' Storage=31 cf Inflow=0.65 cfs 11,301 cf Discarded=0.57 cfs 11,301 cf Primary=0.00 cfs 0 cf Outflow=0.57 cfs 11,301 cf
Pond 5P: BIORETENTION BASIN 1APeak Elev=93.74' Storage=5,607 cf Inflow=2.50 cfs 11,283 cf Outflow=0.27 cfs 9,776 cf
Pond 6P: BIORETENTION BASIN 2APeak Elev=95.03' Storage=78 cf Inflow=0.07 cfs 854 cf Outflow=0.06 cfs 807 cf
Pond 8P: INFILTRATIONBASIN 3Peak Elev=91.23' Storage=548 cf Inflow=0.94 cfs 5,677 cf Discarded=0.27 cfs 5,677 cf Primary=0.00 cfs 0 cf Outflow=0.27 cfs 5,677 cf
Pond 10P: PERVIOUS PAVEMENT2BPeak Elev=94.85' Storage=1,015 cf Inflow=1.05 cfs 4,208 cf Outflow=0.83 cfs 4,204 cf
Pond 15P: PERVIOUS PAVEMENT3BPeak Elev=94.86' Storage=994 cf Inflow=1.10 cfs 4,430 cf Outflow=0.94 cfs 4,426 cf
Pond 33P: INFILTRATIONBASIN 2Peak Elev=93.12' Storage=1,207 cf Inflow=0.83 cfs 5,011 cf Discarded=0.13 cfs 5,011 cf Primary=0.00 cfs 0 cf Outflow=0.13 cfs 5,011 cf
Pond 42P: BIORENTION BASIN 3APeak Elev=94.07' Storage=204 cf Inflow=0.10 cfs 1,351 cf Outflow=0.07 cfs 1,251 cf
Link 32L: POA1Inflow=0.00 cfs 0 cf Primary=0.00 cfs 0 cf
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 12/19/2025 Page 222
link 33L: POA2 link 34L: POA3 Total Runoff Area = 138,907 sf Runoff Volume = 23,651 cf Average Runoff Depth = 2.04" 73.07% Pervious = 101,495 sf 26.93% Impervious = 37,412 sf
Page 390 Download HTML
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 12/19/2025 ons LLC Page 223
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 2S: DA-P1 PERVIOUS
Runoff = 0.17 cfs @ 12.62 hrs, Volume= Routed to Pond 5P : BIORETENTION BASIN 1A
2,423 cf, Depth= 0.55"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-F Rainfall=6.34"
Page 391 Download HTML
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 12/19/2025
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LL
Hydrograph for Subcatchment 2S: DA-P1 PERVIOUS
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.150.000.000.00
4.000.330.000.000.00
6.000.540.000.000.00
8.000.820.000.000.00
10.001.260.000.000.00
12.003.040.000.000.00
14.005.080.220.000.09
16.005.520.320.000.05
18.005.800.390.000.04
20.006.010.450.000.03
22.006.190.500.000.03
24.006.340.550.000.03
26.006.340.550.000.00
28.006.340.550.000.00
30.006.340.550.000.00
32.006.340.550.000.00
34.006.340.550.000.00
36.006.340.550.000.00
38.006.340.550.000.00
40.006.340.550.000.00
42.006.340.550.000.00
44.006.340.550.000.00
46.006.340.550.000.00
48.006.340.550.000.00
50.006.340.550.000.00
52.006.340.550.000.00
54.006.340.550.000.00
56.006.340.550.000.00
58.006.340.550.000.00
60.006.340.550.000.00
62.006.340.550.000.00
64.006.340.550.000.00
66.006.340.550.000.00
68.006.340.550.000.00
70.006.340.550.000.00
72.006.340.550.000.00
Page 224
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NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 12/19/2025 ons LLC Page 225
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 3S: DA-P3 PERVIOUS
Runoff = 0.10 cfs @ 12.57 hrs, Volume= 1,351 cf, Depth= 0.55" Routed to Pond 42P : BIORENTION BASIN 3A
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-F Rainfall=6.34"
Area (ac) CN Description
0.680 39 >75% Grass cover, Good, HSG A
0.680 39 100.00% Pervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
9.0 83 0.0400 0.15 Sheet Flow, Grass: Dense n= 0.240 P2= 3.42" Using McCuen-Spiess flow length
0.2 10 0.0240 1.08 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps
2.2 270 2.00 Direct Entry, Pioe Flow
11.5 363 Total
Subcatchment 3S: DA-P3 PERVIOUS
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NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 12/19/2025
10 YR-F Rainfall=6.34" Printed 12/19/2025 Page 226
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 3S: DA-P3 PERVIOUS
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.150.000.000.00
4.000.330.000.000.00
6.000.540.000.000.00
8.000.820.000.000.00
10.001.260.000.000.00
12.003.040.000.000.00
14.005.080.220.000.05
16.005.520.320.000.03
18.005.800.390.000.02
20.006.010.450.000.02
22.006.190.500.000.02
24.006.340.550.000.02
26.006.340.550.000.00
28.006.340.550.000.00
30.006.340.550.000.00
32.006.340.550.000.00
34.006.340.550.000.00
36.006.340.550.000.00
38.006.340.550.000.00
40.006.340.550.000.00
42.006.340.550.000.00
44.006.340.550.000.00
46.006.340.550.000.00
48.006.340.550.000.00
50.006.340.550.000.00
52.006.340.550.000.00
54.006.340.550.000.00
56.006.340.550.000.00
58.006.340.550.000.00
60.006.340.550.000.00
62.006.340.550.000.00
64.006.340.550.000.00
66.006.340.550.000.00
68.006.340.550.000.00
70.006.340.550.000.00
72.006.340.550.000.00
Page 394 Download HTML
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 12/19/2025 ons LLC Page 227
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 4S: DA-P2 PERVIOUS
Runoff = 0.07 cfs @ 12.38 hrs, Volume= 854 cf, Depth= 0.55" Routed to Pond 6P : BIORENTION BASIN 2A
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-F Rainfall=6.34"
Area (ac) CN Description
0.430 39 >75% Grass cover, Good, HSG A
0.430 39 100.00% Pervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
7.8 60 0.0300 0.13 Sheet Flow, Grass: Dense n= 0.240 P2= 3.42"
0.9 108 2.00 Direct Entry, Pipe Flow
8.7 168 Total
Subcatchment 4S: DA-P2 PERVIOUS
Subcatchment 4S: DA-P2 PERVIOUS
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NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 12/19/2025
10 YR-F Rainfall=6.34" Printed 12/19/2025 Page 228
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LL
Hydrograph for Subcatchment 4S: DA-P2 PERVIOUS
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.150.000.000.00
4.000.330.000.000.00
6.000.540.000.000.00
8.000.820.000.000.00
10.001.260.000.000.00
12.003.040.000.000.00
14.005.080.220.000.03
16.005.520.320.000.02
18.005.800.390.000.01
20.006.010.450.000.01
22.006.190.500.000.01
24.006.340.550.000.01
26.006.340.550.000.00
28.006.340.550.000.00
30.006.340.550.000.00
32.006.340.550.000.00
34.006.340.550.000.00
36.006.340.550.000.00
38.006.340.550.000.00
40.006.340.550.000.00
42.006.340.550.000.00
44.006.340.550.000.00
46.006.340.550.000.00
48.006.340.550.000.00
50.006.340.550.000.00
52.006.340.550.000.00
54.006.340.550.000.00
56.006.340.550.000.00
58.006.340.550.000.00
60.006.340.550.000.00
62.006.340.550.000.00
64.006.340.550.000.00
66.006.340.550.000.00
68.006.340.550.000.00
70.006.340.550.000.00
72.006.340.550.000.00
Page 396 Download HTML
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 12/19/2025 ons LLC Page 229
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 6S: DA-P3 IMPERVIOUS
Runoff = 1.10 cfs @ 12.12 hrs, Volume= Routed to Pond 15P : PERVIOUS PAVEMENT 3B 4,430 cf, Depth= 6.10"
4,430 cf, Depth= 6.10"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-F Rainfall=6.34"
Area (ac) CN Description
0.200 98 Paved parking, HSG A
0.200 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
3.6 37 0.0300 0.17 Sheet Flow, Grass: Short n= 0.150 P2= 3.42" Shallow Concentrated Flow, Paved Kv= 20.3 fps
0.7 118 0.0200 2.87
4.3 155 Total
Subcatchment 6S: DA-P3 IMPERVIOUS
Subcatchment 6S: DA-P3 IMPERVIOUS
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours)
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Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 6S: DA-P3 IMPERVIOUS
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.150.000.040.01
4.000.330.000.170.02
6.000.540.000.360.02
8.000.820.000.620.03
10.001.260.001.040.06
12.003.040.002.810.63
14.005.080.004.850.06
16.005.520.005.280.03
18.005.800.005.560.02
20.006.010.005.770.02
22.006.190.005.950.02
24.006.340.006.100.01
26.006.340.006.100.00
28.006.340.006.100.00
30.006.340.006.100.00
32.006.340.006.100.00
34.006.340.006.100.00
36.006.340.006.100.00
38.006.340.006.100.00
40.006.340.006.100.00
42.006.340.006.100.00
44.006.340.006.100.00
46.006.340.006.100.00
48.006.340.006.100.00
50.006.340.006.100.00
52.006.340.006.100.00
54.006.340.006.100.00
56.006.340.006.100.00
58.006.340.006.100.00
60.006.340.006.100.00
62.006.340.006.100.00
64.006.340.006.100.00
66.006.340.006.100.00
68.006.340.006.100.00
70.006.340.006.100.00
72.006.340.006.100.00
Page 398 Download HTML
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Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 7S: DA-P2 IMPERVIOUS
Runoff = 1.05 cfs @ 12.12 hrs, Volume= Routed to Pond 10P : PERVIOUS PAVEMENT 2B 4,208 cf, Depth= 6.10"
4,208 cf, Depth= 6.10"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-F Rainfall=6.34"
Area (ac) CN Description
0.190 98 Paved roads w/curbs & sewers, HSG A
0.190 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
3.5 35 0.0300 0.17 Sheet Flow, Grass: Short n= 0.150 P2= 3.42" Shallow Concentrated Flow, Paved Kv= 20.3 fps
0.8 137 0.0200 2.87
4 3 172 Total
Subcatchment 7S: DA-P2 IMPERVIOUS
Subcatchment 7S: DA-P2 IMPERVIOUS
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NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 12/19/2025
0 YR-F Rainfall=6.34" Printed 12/19/2025 Page 232
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 7S: DA-P2 IMPERVIOUS
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.150.000.040.01
4.000.330.000.170.02
6.000.540.000.360.02
8.000.820.000.620.03
10.001.260.001.040.05
12.003.040.002.810.60
14.005.080.004.850.06
16.005.520.005.280.03
18.005.800.005.560.02
20.006.010.005.770.02
22.006.190.005.950.02
24.006.340.006.100.01
26.006.340.006.100.00
28.006.340.006.100.00
30.006.340.006.100.00
32.006.340.006.100.00
34.006.340.006.100.00
36.006.340.006.100.00
38.006.340.006.100.00
40.006.340.006.100.00
42.006.340.006.100.00
44.006.340.006.100.00
46.006.340.006.100.00
48.006.340.006.100.00
50.006.340.006.100.00
52.006.340.006.100.00
54.006.340.006.100.00
56.006.340.006.100.00
58.006.340.006.100.00
60.006.340.006.100.00
62.006.340.006.100.00
64.006.340.006.100.00
66.006.340.006.100.00
68.006.340.006.100.00
70.006.340.006.100.00
72.006.340.006.100.00
Page 400 Download HTML
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Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 8S: DA-P1 IMPERVIOUS
Runoff = 2.49 cfs @ 12.11 hrs, Volume= Routed to Pond 5P : BIORETENTION BASIN 1A
8,859 cf, Depth= 6.10"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-F Rainfall=6.34"
Area (ac) CN Description
0.400 98 Paved roads w/curbs & sewers, HSG A
0.400 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)
1.4 235 0.0200 2.87 Shallow Concentrated Flow, Paved Kv= 20.3 fps
1.1 137 2.00 Direct Entry, Pipe Flow
2.5 372 Total
Subcatchment 8S: DA-P1_IMPERVIOUS Pipe Flow
Subcatchment 8S: DA-P1 IMPERVIOUS
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours)
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NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 12/19/2025
0 YR-F Rainfall=6.34" Printed 12/19/2025 Page 234
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 8S: DA-P1 IMPERVIOUS
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.150.000.040.02
4.000.330.000.170.03
6.000.540.000.360.04
8.000.820.000.620.06
10.001.260.001.040.12
12.003.040.002.811.47
14.005.080.004.850.12
16.005.520.005.280.07
18.005.800.005.560.05
20.006.010.005.770.04
22.006.190.005.950.03
24.006.340.006.100.03
26.006.340.006.100.00
28.006.340.006.100.00
30.006.340.006.100.00
32.006.340.006.100.00
34.006.340.006.100.00
36.006.340.006.100.00
38.006.340.006.100.00
40.006.340.006.100.00
42.006.340.006.100.00
44.006.340.006.100.00
46.006.340.006.100.00
48.006.340.006.100.00
50.006.340.006.100.00
52.006.340.006.100.00
54.006.340.006.100.00
56.006.340.006.100.00
58.006.340.006.100.00
60.006.340.006.100.00
62.006.340.006.100.00
64.006.340.006.100.00
66.006.340.006.100.00
68.006.340.006.100.00
70.006.340.006.100.00
72.006.340.006.100.00
Page 402 Download HTML
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 12/19/2025
YR-F Rainfall=6.34" Printed 12/19/2025 Page 235
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 14S: LOT 11 Roof
Runoff = 0.46 cfs @ 12.09 hrs, Volume= 1,525 cf, Depth= 6.10" Routed to Pond 2P : Subsurface Infiltration Basin 1
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-F Rainfall=6.34"
Area (sf) CN Description
3,000 98 Roofs, HSG A
3,000 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
2.00 Direct Entry, Pipe Flow
Subcatchment 14S: LOT 11 Roof
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10 YR-F Rainfall=6.34" Printed 12/19/2025 Page 236
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 14S: LOT 11 Roof
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.150.000.040.00
4.000.330.000.170.01
6.000.540.000.360.01
8.000.820.000.620.01
10.001.260.001.040.02
12.003.040.002.810.29
14.005.080.004.850.02
16.005.520.005.280.01
18.005.800.005.560.01
20.006.010.005.770.01
22.006.190.005.950.01
24.006.340.006.100.00
26.006.340.006.100.00
28.006.340.006.100.00
30.006.340.006.100.00
32.006.340.006.100.00
34.006.340.006.100.00
36.006.340.006.100.00
38.006.340.006.100.00
40.006.340.006.100.00
42.006.340.006.100.00
44.006.340.006.100.00
46.006.340.006.100.00
48.006.340.006.100.00
50.006.340.006.100.00
52.006.340.006.100.00
54.006.340.006.100.00
56.006.340.006.100.00
58.006.340.006.100.00
60.006.340.006.100.00
62.006.340.006.100.00
64.006.340.006.100.00
66.006.340.006.100.00
68.006.340.006.100.00
70.006.340.006.100.00
72.006.340.006.100.00
Page 404 Download HTML
Analysis - Proposed Conditions NOAA 24-hr D 10 YR-F Rainfall=6.34" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 237
Summary for Pond 2P: Subsurface Infiltration Basin 1
Inflow Area = 73,567 sf, 27.76% Impervious, Inflow Depth = 1.84" for 10 YR-F event
Inflow = 0.65 cfs @ 12.09 hrs, Volume= 11,301 cf
Outflow = 0.57 cfs @ 12.13 hrs, Volume= 11,301 cf, Atten= 12%, Lag= 2.4 min
Discarded = 0.57 cfs @ 12.13 hrs, Volume= 11,301 cf
Primary = 0.00 cfs @ 0.00 hrs, Volume= 0 cf
Routed to Link 32L : POA1
Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs
Peak Elev= 87.03' @ 12.10 hrs Surf.Area= 2,475 sf Storage= 31 cf
Plug-Flow detention time= 0.3 min calculated for 11,301 cf (100% of inflow)
Center-of-Mass det. time= 0.3 min ( 1,011.5 - 1,011.2 )
VolumeInvertAvail.StorageStorage Description
#1A87.00'4,349 cf27.50'W x 90.00'L x 6.00'H Field A
#2A87.50'3,188 cf14,850 cf Overall - 3,979 cf Embedded = 10,871 cf x 40.0% Voids ADS N-12 36" x 20 Inside #1 Inside= 36.1"W x 36.1"H => 7.10 sf x 20.00'L = 142.0 cf Outside= 42.0"W x 42.0"H => 8.86 sf x 20.00'L = 177.2 cf 20 Chambers in 5 Rows 24.50' Header x 7.10 sf x 2 = 347.9 cf Inside
7,536 cf Total Available Storage
Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Primary92.59'48.0" x 48.0" Horiz. Grate C = 0.600 Limited to weir flow at low heads
#2Device 188.00'12.0" Round Culvert L = 119.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 88.00' / 86.00' S = 0.0168 /' Cc= 0.900 n = 0.012 Concrete pipe, finished, Flow Area= 0.79 sf
#3Discarded87.00'10.000 in/hr Exfiltration over Surface area Phase-In= 0.01'
Discarded OutFlow Max=0.57 cfs @ 12.13 hrs HW=87.02' (Free Discharge)
3=Exfiltration (Exfiltration Controls 0.57 cfs)
Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=87.00' TW=0.00' (Dynamic Tailwater)
1=Grate ( Controls 0.00 cfs)
2=Culvert ( Controls 0.00 cfs)
Pond 2P: Subsurface Infiltration Basin 1
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Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 2P: Subsurface Infiltration Basin 1 - Chamber Wizard Field A
Chamber Model = ADS N-12 36" (ADS N-12ยฎ Pipe) Inside= 36.1"W x 36.1"H => 7.10 sf x 20.00'L = 142.0 cf Outside= 42.0"W x 42.0"H => 8.86 sf x 20.00'L = 177.2 cf 42.0" Wide + 21.0" Spacing = 63.0" C-C Row Spacing 4 Chambers/Row x 20.00' Long +3.50' Header x 2 = 87.00' Row Length +18.0" End Stone x 2 = 90.00' Base Length 5 Rows x 42.0" Wide + 21.0" Spacing x 4 + 18.0" Side Stone x 2 = 27.50' Base Width 6.0" Stone Base + 42.0" Chamber Height + 24.0" Stone Cover = 6.00' Field Height 20 Chambers x 142.0 cf + 24.50' Header x 7.10 sf x 2 = 3,187.9 cf Chamber Storage 20 Chambers x 177.2 cf + 24.50' Header x 8.86 sf x 2 = 3,978.6 cf Displacement 14,850.0 cf Field - 3,978.6 cf Chambers = 10,871.4 cf Stone x 40.0% Voids = 4,348.5 cf Stone Storage Chamber Storage + Stone Storage = 7,536.4 cf = 0.173 af Overall Storage Efficiency = 50.8% Overall System Size = 90.00' x 27.50' x 6.00' 20 Chambers 550.0 cy Field 402.6 cy Stone
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Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 2P: Subsurface Infiltration Basin 1
Pond 2P: Subsurface Infiltration Basin 1
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Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 2P: Subsurface Infiltration Basin 1
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 2P: Subsurface Infiltration Basin 1
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Outflow (cfs)Discarded (cfs)Primary (cfs)
0.000.00087.000.000.000.00
2.000.00087.000.000.000.00
4.000.01087.000.010.010.00
6.000.01087.000.010.010.00
8.000.01087.000.010.010.00
10.000.02087.000.020.020.00
12.000.45887.010.450.450.00
14.000.29587.000.290.290.00
16.000.25487.000.250.250.00
18.000.21487.000.210.210.00
20.000.17387.000.170.170.00
22.000.14287.000.140.140.00
24.000.11287.000.110.110.00
26.000.04187.000.040.040.00
28.000.01087.000.010.010.00
30.000.00087.000.000.000.00
32.000.00087.000.000.000.00
34.000.00087.000.000.000.00
36.000.00087.000.000.000.00
38.000.00087.000.000.000.00
40.000.00087.000.000.000.00
42.000.00087.000.000.000.00
44.000.00087.000.000.000.00
46.000.00087.000.000.000.00
48.000.00087.000.000.000.00
50.000.00087.000.000.000.00
52.000.00087.000.000.000.00
54.000.00087.000.000.000.00
56.000.00087.000.000.000.00
58.000.00087.000.000.000.00
60.000.00087.000.000.000.00
62.000.00087.000.000.000.00
64.000.00087.000.000.000.00
66.000.00087.000.000.000.00
68.000.00087.000.000.000.00
70.000.00087.000.000.000.00
72.000.00087.000.000.000.00
Page 409 Download HTML
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 12/19/2025 ons LLC Page 242
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 2P: Subsurface Infiltration Basin 1
Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)
87.000.000.000.00
87.100.570.570.00
87.200.570.570.00
87.300.570.570.00
87.400.570.570.00
87.500.570.570.00
87.600.570.570.00
87.700.570.570.00
87.800.570.570.00
87.900.570.570.00
88.000.570.570.00
88.100.570.570.00
88.200.570.570.00
88.300.570.570.00
88.400.570.570.00
88.500.570.570.00
88.600.570.570.00
88.700.570.570.00
88.800.570.570.00
88.900.570.570.00
89.000.570.570.00
89.100.570.570.00
89.200.570.570.00
89.300.570.570.00
89.400.570.570.00
89.500.570.570.00
89.600.570.570.00
89.700.570.570.00
89.800.570.570.00
89.900.570.570.00
90.000.570.570.00
90.100.570.570.00
90.200.570.570.00
90.300.570.570.00
90.400.570.570.00
90.500.570.570.00
90.600.570.570.00
90.700.570.570.00
90.800.570.570.00
90.900.570.570.00
91.000.570.570.00
91.100.570.570.00
91.200.570.570.00
91.300.570.570.00
91.400.570.570.00
91.500.570.570.00
91.600.570.570.00
91.700.570.570.00
91.800.570.570.00
91.900.570.570.00
92.000.570.570.00
92.100.570.570.00
Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)
92.200.570.570.00
92.300.570.570.00
92.400.570.570.00
92.500.570.570.00
92.600.630.570.05
92.701.540.570.97
92.801.910.571.33
92.902.190.571.62
93.002.440.571.86
Page 410 Download HTML
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 12/19/2025
YR-F Rainfall=6.34" Printed 12/19/2025 Page 243
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Area-Storage for Pond 2P: Subsurface Infiltration Basin 1
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
87.002,4750
87.102,47599
87.202,475198
87.302,475297
87.402,475396
87.502,475495
87.602,475581
87.702,475657
87.802,475739
87.902,475852
88.002,475980
88.102,4751,118
88.202,4751,264
88.302,4751,416
88.402,4751,573
88.502,4751,735
88.602,4751,900
88.702,4752,069
88.802,4752,240
88.902,4752,412
89.002,4752,587
89.102,4752,762
89.202,4752,938
89.302,4753,114
89.402,4753,290
89.502,4753,465
89.602,4753,639
89.702,4753,812
89.802,4753,983
89.902,4754,151
90.002,4754,316
90.102,4754,478
90.202,4754,636
90.302,4754,788
90.402,4754,934
90.502,4755,072
90.602,4755,200
90.702,4755,313
90.802,4755,395
90.902,4755,470
91.002,4755,556
91.102,4755,655
91.202,4755,754
91.302,4755,853
91.402,4755,952
91.502,4756,051
91.602,4756,150
91.702,4756,249
91.802,4756,348
91.902,4756,447
92.002,4756,546
92.102,4756,645
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
92.202,4756,744
92.302,4756,843
92.402,4756,942
92.502,4757,041
92.602,4757,140
92.702,4757,239
92.802,4757,338
92.902,4757,437
93.002,4757,536
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Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 5P: BIORETENTION BASIN 1A
Inflow Area = 70,567 sf, 24.69% Impervious, Inflow Depth = 1.92" for 10 YR-F event Inflow = 2.50 cfs @ 12.11 hrs, Volume = 11,283 cf Outflow = 0.27 cfs @ 13.52 hrs, Volume = 9,776 cf, Atten = 89%, Lag = 84.6 min Primary = 0.27 cfs @ 13.52 hrs, Volume = 9,776 cf Routed to Pond 2P : Subsurface Infiltration Basin 1
Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 93.74' @ 13.52 hrs Surf.Area= 1,500 sf Storage= 5,607 cf Plug-Flow detention time= 328.9 min calculated for 9,775 cf (87% of inflow) Center-of-Mass det. time= 258.1 min (1,053.5 - 795.4)
VolumeInvertAvail.StorageStorage Description
#190.00'8,250 cfCustom Stage Data (Prismatic)Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
90.001,50000
95.501,5008,2508,250
DeviceRoutingInvertOutlet Devices
#1Device 391.00'2.5" Vert. Orifice C = 0.600 Limited to weir flow at low heads
#2Device 395.00'48.0" x 48.0" Horiz. Grate C = 0.600 Limited to weir flow at low heads
#3Primary87.48'12.0" Round Culvert\n L = 28.0' RCP, groove end projecting, Ke = 0.200\nInlet / Outlet Invert= 87.48' / 87.00' S = 0.0171'' Cc = 0.900\n n = 0.012 Concrete pipe, finished, Flow Area= 0.79 sf
Primary OutFlow Max=0.27 cfs @ 13.52 hrs HW=93.74' TW=87.01' (Dynamic Tailwater) 3=Culvert (Passes 0.27 cfs of 10.81 cfs potential flow) 1=Orifice (Orifice Controls 0.27 cfs @ 7.81 fps) 2=Grate ( Controls 0.00 cfs)
Pond 5P: BIORETENTION BASIN 1A Orifice
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Pond 5P: BIORETENTION BASIN 1A
Pond 5P: BIORETENTION BASIN 1A
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Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
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Page 246
Pond 5P: BIORETENTION BASIN 1A
Stage-Area-Storage
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Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 5P: BIORETENTION BASIN 1A
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Primary (cfs)
0.000.00090.000.00
2.000.025390.040.00
4.000.0324290.160.00
6.000.0450790.340.00
8.000.0688590.590.00
10.000.121,48590.990.00
12.001.473,23092.150.17
14.000.215,54893.700.26
16.000.124,84593.230.24
18.000.093,99692.660.20
20.000.073,22392.150.17
22.000.072,64491.760.13
24.000.062,23491.490.10
26.000.001,75091.170.04
28.000.001,60691.070.01
30.000.001,56491.040.00
32.000.001,54691.030.00
34.000.001,53591.020.00
36.000.001,52991.020.00
38.000.001,52491.020.00
40.000.001,52191.010.00
42.000.001,51891.010.00
44.000.001,51691.010.00
46.000.001,51591.010.00
48.000.001,51491.010.00
50.000.001,51291.010.00
52.000.001,51291.010.00
54.000.001,51191.010.00
56.000.001,51091.010.00
58.000.001,50991.010.00
60.000.001,50991.010.00
62.000.001,50891.010.00
64.000.001,50891.010.00
66.000.001,50891.010.00
68.000.001,50791.000.00
70.000.001,50791.000.00
72.000.001,50791.000.00
Page 247
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Page 248
Stage-Discharge for Pond 5P: BIORETENTION BASIN 1A
Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)
90.000.0092.600.20
90.050.0092.650.20
90.100.0092.700.21
90.150.0092.750.21
90.200.0092.800.21
90.250.0092.850.22
90.300.0092.900.22
90.350.0092.950.22
90.400.0093.000.23
90.450.0093.050.23
90.500.0093.100.23
90.550.0093.150.23
90.600.0093.200.24
90.650.0093.250.24
90.700.0093.300.24
90.750.0093.350.25
90.800.0093.400.25
90.850.0093.450.25
90.900.0093.500.25
90.950.0093.550.26
91.000.0093.600.26
91.050.0093.650.26
91.100.0293.700.26
91.150.0393.750.27
91.200.0593.800.27
91.250.0693.850.27
91.300.0793.900.27
91.350.0893.950.28
91.400.0994.000.28
91.450.1094.050.28
91.500.1094.100.28
91.550.1194.150.29
91.600.1294.200.29
91.650.1294.250.29
91.700.1394.300.29
91.750.1394.350.30
91.800.1494.400.30
91.850.1494.450.30
91.900.1594.500.30
91.950.1594.550.30
92.000.1694.600.31
92.050.1694.650.31
92.100.1694.700.31
92.150.1794.750.31
92.200.1794.800.32
92.250.1894.850.32
92.300.1894.900.32
92.350.1894.950.32
92.400.1995.000.32
92.450.1995.050.91
92.500.1995.101.98
92.550.2095.153.37
Elevation (feet)Primary (cfs)
95.205.01
95.256.87
95.308.93
95.3511.17
95.4012.28
95.4512.32
95.5012.36
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Area-Storage for Pond 5P: BIORETENTION BASIN 1A
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
90.001,5000
90.101,500150
90.201,500300
90.301,500450
90.401,500600
90.501,500750
90.601,500900
90.701,5001,050
90.801,5001,200
90.901,5001,350
91.001,5001,500
91.101,5001,650
91.201,5001,800
91.301,5001,950
91.401,5002,100
91.501,5002,250
91.601,5002,400
91.701,5002,550
91.801,5002,700
91.901,5002,850
92.001,5003,000
92.101,5003,150
92.201,5003,300
92.301,5003,450
92.401,5003,600
92.501,5003,750
92.601,5003,900
92.701,5004,050
92.801,5004,200
92.901,5004,350
93.001,5004,500
93.101,5004,650
93.201,5004,800
93.301,5004,950
93.401,5005,100
93.501,5005,250
93.601,5005,400
93.701,5005,550
93.801,5005,700
93.901,5005,850
94.001,5006,000
94.101,5006,150
94.201,5006,300
94.301,5006,450
94.401,5006,600
94.501,5006,750
94.601,5006,900
94.701,5007,050
94.801,5007,200
94.901,5007,350
95.001,5007,500
95.101,5007,650
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
95.201,5007,800
95.301,5007,950
95.401,5008,100
95.501,5008,250
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Summary for Pond 6P: BIORENTION BASIN 2A
Inflow Area = 18,731 sf, 0.00% Impervious, Inflow Depth = 0.55" for 10 YR-F event Inflow = 0.07 cfs @ 12.38 hrs, Volume= 854 cf Outflow = 0.06 cfs @ 12.74 hrs, Volume= 807 cf, Atten= 15%, Lag= 21.6 min Primary = 0.06 cfs @ 12.74 hrs, Volume= 807 cf Routed to Pond 33P : INFILTRATION BASIN 2 Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 95.03' @ 12.74 hrs Surf.Area= 152 sf Storage= 78 cf Plug-Flow detention time= 51.5 min calculated for 807 cf (95% of inflow) Center-of-Mass det. time= 26.4 min ( 1,002.9 - 976.5 )
#1 94.30' 307 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation (feet) Surf.Area (sq-ft) Inc.Store (cubic-feet) Cum.Store (cubic-feet) 94.30 63 0 0 95.00 148 74 74 96.00 319 234 307 Device Routing Invert Outlet Devices #1 Device 3 94.80' 2.5" Vert. Orifice C=0.600 Limited to weir flow at low heads #2 Device 3 95.50' 48.0" x 48.0" Horizon. Grate C=0.600 #3 Primary 91.80' 12.0" Round Culvert L=30.0' RCP, groove end projecting, Ke=0.200 Inlet / Outlet Invert=91.80' / 91.65' S=0.0050'/' Cc=0.900 n=0.012 Concrete pipe, finished, Flow Area=0.79 sf Primary OutFlow Max=0.06 cfs @ 12.74 hrs HW=95.03' TW=92.88' (Dynamic Tailwater) 3=Culvert (Passes 0.06 cfs of 6.53 cfs potential flow) 1=Orifice (Orifice Controls 0.06 cfs @ 1.68 fps) 2=Grate (Controls 0.00 cfs) Grate Pond 6P: BIORENTION BASIN 2A
Culvert
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Pond 6P: BIORENTION BASIN 2A
Pond 6P: BIORENTION BASIN 2A
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Pond 6P: BIORENTION BASIN 2A
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Hydrograph for Pond 6P: BIORENTION BASIN 2A
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Primary (cfs)
0.000.00094.300.00
2.000.00094.300.00
4.000.00094.300.00
6.000.00094.300.00
8.000.00094.300.00
10.000.00094.300.00
12.000.00094.300.00
14.000.036594.940.03
16.000.026094.900.02
18.000.015894.890.01
20.000.015794.880.01
22.000.015794.880.01
24.000.015694.870.01
26.000.004894.810.00
28.000.004794.800.00
30.000.004794.800.00
32.000.004794.800.00
34.000.004794.800.00
36.000.004794.800.00
38.000.004794.800.00
40.000.004794.800.00
42.000.004794.800.00
44.000.004794.800.00
46.000.004794.800.00
48.000.004794.800.00
50.000.004794.800.00
52.000.004794.800.00
54.000.004794.800.00
56.000.004794.800.00
58.000.004794.800.00
60.000.004794.800.00
62.000.004794.800.00
64.000.004794.800.00
66.000.004794.800.00
68.000.004794.800.00
70.000.004794.800.00
72.000.004794.800.00
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Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 6P: BIORENTION BASIN 2A
Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)
94.300.0094.820.0095.340.11
94.310.0094.830.0095.350.11
94.320.0094.840.0095.360.11
94.330.0094.850.0095.370.11
94.340.0094.860.0195.380.11
94.350.0094.870.0195.390.11
94.360.0094.880.0195.400.12
94.370.0094.890.0195.410.12
94.380.0094.900.0295.420.12
94.390.0094.910.0295.430.12
94.400.0094.920.0295.440.12
94.410.0094.930.0395.450.12
94.420.0094.940.0395.460.12
94.430.0094.950.0395.470.12
94.440.0094.960.0495.480.12
94.450.0094.970.0495.490.13
94.460.0094.980.0595.500.13
94.470.0094.990.0595.510.18
94.480.0095.000.0595.520.28
94.490.0095.010.0595.530.40
94.500.0095.020.0695.540.55
94.510.0095.030.0695.550.72
94.520.0095.040.0695.560.90
94.530.0095.050.0695.571.10
94.540.0095.060.0695.581.32
94.550.0095.070.0795.591.55
94.560.0095.080.0795.601.79
94.570.0095.090.0795.612.05
94.580.0095.100.0795.622.31
94.590.0095.110.0795.632.59
94.600.0095.120.0895.642.88
94.610.0095.130.0895.653.18
94.620.0095.140.0895.663.49
94.630.0095.150.0895.673.81
94.640.0095.160.0895.684.14
94.650.0095.170.0895.694.48
94.660.0095.180.0995.704.83
94.670.0095.190.0995.715.18
94.680.0095.200.0995.725.55
94.690.0095.210.0995.735.92
94.700.0095.220.0995.746.30
94.710.0095.230.0995.756.69
94.720.0095.240.1095.767.09
94.730.0095.250.1095.777.49
94.740.0095.260.1095.787.88
94.750.0095.270.1095.797.89
94.760.0095.280.1095.807.90
94.770.0095.290.1095.817.92
94.780.0095.300.1095.827.93
94.790.0095.310.1095.837.94
94.800.0095.320.1195.847.95
94.810.0095.330.1195.857.97
Elevation (feet)Primary (cfs)
95.867.98
95.877.99
95.888.00
95.898.02
95.908.03
95.918.04
95.928.05
95.938.07
95.948.08
95.958.09
95.968.10
95.978.12
95.988.13
95.998.14
96.008.15
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Stage-Area-Storage for Pond 6P: BIORENTION BASIN 2A
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
94.3063095.34206134
94.3265195.36210138
94.3468395.38213142
94.3670495.40216147
94.3873595.42220151
94.4075795.44223156
94.4278895.46227160
94.44801095.48230165
94.46821295.50234169
94.48851395.52237174
94.50871595.54240179
94.52901795.56244184
94.54921995.58247188
94.56952095.60251193
94.58972295.62254198
94.60992495.64257204
94.621022695.66261209
94.641042895.68264214
94.661073195.70268219
94.681093395.72271225
94.701123595.74275230
94.721143795.76278236
94.741163995.78281241
94.761194295.80285247
94.781214495.82288253
94.801244795.84292258
94.821264995.86295264
94.841295295.88298270
94.861315495.90302276
94.881335795.92305282
94.901366095.94309289
94.921386295.96312295
94.941416595.98316301
94.961436896.00319307
94.9814671
95.0014874
95.0215177
95.0415580
95.0615883
95.0816286
95.1016590
95.1216993
95.1417296
95.16175100
95.18179103
95.20182107
95.22186111
95.24189114
95.26192118
95.28196122
95.30199126
95.32203130
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 8P: INFILTRATION BASIN 3
Inflow Area =38,333 sf,22.73% Impervious,Inflow Depth = 1.78" for 10 YR-F event
Inflow =0.94 cfs @12.16 hrs,Volume= 5,677 cf
Outflow =0.27 cfs @12.11 hrs,Volume= 5,677 cf, Atten= 72%, Lag= 0.0 min
Discarded =0.27 cfs @12.11 hrs,Volume= 5,677 cf
Primary =0.00 cfs @0.00 hrs,Volume= 0 cf
Routed to Link 34L : POA 3
Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 91.23' @ 12.60 hrs Surf.Area= 1,150 sf Storage= 548 cf
Plug-Flow detention time=10.1 min calculated for 5,677 cf (100% of inflow) Center-of-Mass det. time=10.1 min (880.8 - 870.8)
VolumeInvertAvail.StorageStorage Description
#190.75'4,888 cfCustom Stage Data (Prismatic)Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
90.75 95.001,150 1,1500 4,8880 4,888
DeviceRoutingInvertOutlet Devices
#1Device 392.75'2.5" Vert. Orifice C= 0.600 Limited to weir flow at low heads
#2Device 394.50'48.0" x 48.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads
#3Primary92.75'12.0" Round Culvert L= 7.0' RCP, groove end projecting, Ke= 0.200 Inlet / Outlet Invert= 92.75' / 92.65' S= 0.0143 '/ Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 0.79 sf
#4Discarded90.75'10.000 in/hr Exfiltration over Surface area Phase-In= 0.01'
Discarded OutFlow Max=0.27 cfs @ 12.11 hrs HW=90.80' (Free Discharge) 4=Exfiltration (Exfiltration Controls 0.27 cfs)
Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=90.75' TW=0.00' (Dynamic Tailwater) 3=Culvert ( Controls 0.00 cfs) 1=Orifice ( Controls 0.00 cfs) 2=Grate ( Controls 0.00 cfs)
Discarded OutFlow Max=0.27 cfs @ 12.11 hrs HW=90.80' (Free Discharge) 4=Exfiltration (Exfiltration Controls 0.27 cfs) Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=90.75' TW=0.00' (Dynamic Tailwater) 3=Culvert (Controls 0.00 cfs) 1=Orifice (Controls 0.00 cfs) 2=Grate (Controls 0.00 cfs) Pond 8P: INFILTRATION BASIN 3 Exfiltration
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Page 257
Pond 8P: INFILTRATION BASIN 3
Pond 8P: INFILTRATION BASIN 3
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Page 258
Pond 8P: INFILTRATION BASIN 3
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Hydrograph for Pond 8P: INFILTRATION BASIN 3
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Outflow (cfs)Discarded (cfs)Primary (cfs)
0.000.00090.750.000.000.00
2.000.00090.750.000.000.00
4.000.01090.750.010.010.00
6.000.02190.750.020.020.00
8.000.03190.750.030.030.00
10.000.04290.750.040.040.00
12.000.14690.760.140.140.00
14.000.1727090.980.270.270.00
16.000.10490.750.100.100.00
18.000.06290.750.060.060.00
20.000.04290.750.040.040.00
22.000.04290.750.040.040.00
24.000.03190.750.030.030.00
26.000.01090.750.010.010.00
28.000.00090.750.000.000.00
30.000.00090.750.000.000.00
32.000.00090.750.000.000.00
34.000.00090.750.000.000.00
36.000.00090.750.000.000.00
38.000.00090.750.000.000.00
40.000.00090.750.000.000.00
42.000.00090.750.000.000.00
44.000.00090.750.000.000.00
46.000.00090.750.000.000.00
48.000.00090.750.000.000.00
50.000.00090.750.000.000.00
52.000.00090.750.000.000.00
54.000.00090.750.000.000.00
56.000.00090.750.000.000.00
58.000.00090.750.000.000.00
60.000.00090.750.000.000.00
62.000.00090.750.000.000.00
64.000.00090.750.000.000.00
66.000.00090.750.000.000.00
68.000.00090.750.000.000.00
70.000.00090.750.000.000.00
72.000.00090.750.000.000.00
Page 427 Download HTML
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 12/19/2025 ons LLC Page 260
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 8P: INFILTRATION BASIN 3
Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)
90.750.000.000.0093.350.380.270.12
90.800.270.270.0093.400.390.270.12
90.850.270.270.0093.450.390.270.13
90.900.270.270.0093.500.400.270.13
90.950.270.270.0093.550.400.270.14
91.000.270.270.0093.600.410.270.14
91.050.270.270.0093.650.410.270.15
91.100.270.270.0093.700.420.270.15
91.150.270.270.0093.750.420.270.16
91.200.270.270.0093.800.430.270.16
91.250.270.270.0093.850.430.270.16
91.300.270.270.0093.900.430.270.17
91.350.270.270.0093.950.440.270.17
91.400.270.270.0094.000.440.270.18
91.450.270.270.0094.050.450.270.18
91.500.270.270.0094.100.450.270.18
91.550.270.270.0094.150.450.270.19
91.600.270.270.0094.200.460.270.19
91.650.270.270.0094.250.460.270.19
91.700.270.270.0094.300.460.270.20
91.750.270.270.0094.350.470.270.20
91.800.270.270.0094.400.470.270.20
91.850.270.270.0094.450.470.270.21
91.900.270.270.0094.500.480.270.21
91.950.270.270.0094.551.060.270.80
92.000.270.270.0094.602.140.271.87
92.050.270.270.0094.653.530.273.26
92.100.270.270.0094.705.170.274.90
92.150.270.270.0094.755.880.275.61
92.200.270.270.0094.806.000.275.74
92.250.270.270.0094.856.130.275.86
92.300.270.270.0094.906.250.275.98
92.350.270.270.0094.956.370.276.10
92.400.270.270.0095.006.480.276.22
92.450.270.270.00
92.500.270.270.00
92.550.270.270.00
92.600.270.270.00
92.650.270.270.00
92.700.270.270.00
92.750.270.270.00
92.800.270.270.00
92.850.280.270.02
92.900.300.270.03
92.950.320.270.05
93.000.330.270.06
93.050.340.270.07
93.100.350.270.08
93.150.360.270.09
93.200.360.270.10
93.250.370.270.10
93.300.380.270.11
Page 428 Download HTML
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 12/19/2025 ons LLC Page 261
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Area-Storage for Pond 8P: INFILTRATION BASIN 3
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
90.751,150093.351,1502,990
90.801,1505793.401,1503,048
90.851,15011593.451,1503,105
90.901,15017393.501,1503,163
90.951,15023093.551,1503,220
91.001,15028893.601,1503,277
91.051,15034593.651,1503,335
91.101,15040293.701,1503,393
91.151,15046093.751,1503,450
91.201,15051893.801,1503,507
91.251,15057593.851,1503,565
91.301,15063293.901,1503,623
91.351,15069093.951,1503,680
91.401,15074894.001,1503,738
91.451,15080594.051,1503,795
91.501,15086394.101,1503,852
91.551,15092094.151,1503,910
91.601,15097794.201,1503,968
91.651,1501,03594.251,1504,025
91.701,1501,09394.301,1504,082
91.751,1501,15094.351,1504,140
91.801,1501,20794.401,1504,198
91.851,1501,26594.451,1504,255
91.901,1501,32394.501,1504,313
91.951,1501,38094.551,1504,370
92.001,1501,43894.601,1504,427
92.051,1501,49594.651,1504,485
92.101,1501,55294.701,1504,543
92.151,1501,61094.751,1504,600
92.201,1501,66894.801,1504,657
92.251,1501,72594.851,1504,715
92.301,1501,78294.901,1504,773
92.351,1501,84094.951,1504,830
92.401,1501,89895.001,1504,888
92.451,1501,955
92.501,1502,013
92.551,1502,070
92.601,1502,127
92.651,1502,185
92.701,1502,243
92.751,1502,300
92.801,1502,357
92.851,1502,415
92.901,1502,473
92.951,1502,530
93.001,1502,588
93.051,1502,645
93.101,1502,702
93.151,1502,760
93.201,1502,818
93.251,1502,875
93.301,1502,932
Page 429 Download HTML
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 12/19/2025 Page 262
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LL
Summary for Pond 10P: PERVIOUS PAVEMENT 2B
Intflow Area = 8,276 sf,100.00% Impervious, Inflow Depth = 6.10" for 10 YR-F event Inflow = 1.05 cfs @ 12.12 hrs, Volume= 4,208 cf Outflow = 0.83 cfs @ 12.17 hrs, Volume= 4,204 cf, Atten= 20%, Lag= 3.1 min Primary = 0.83 cfs @ 12.17 hrs, Volume= 4,204 cf Routed to Pond 33P : INFILTRATION BASIN 2 Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 94.85' @ 12.17 hrs Surf.Area= 9,225 sf Storage= 1,015 cf Plug-Flow detention time= 85.6 min calculated for 4,204 cf (100% of inflow) Center-of-Mass det. time= 84.9 min ( 831.3 - 746.4 )
VolumeInvertAvail.StorageStorage Description
#193.80'615 cfStone Storage Bed (Prismatic)Listed below (Recalc) 1,538 cf Overall ร— 40.0% Voids
#294.30'231 cfSurface and Base Course (Prismatic)Listed below (Recalc) 1,538 cf Overall ร— 15.0% Voids
#394.80'1,538 cfSurface (Prismatic)Listed below (Recalc)
2,383 cfTotal Available Storage
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
93.803,07500
94.303,0751,5381,538
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
94.303,07500
94.803,0751,5381,538
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
94.803,07500
95.303,0751,5381,538
DeviceRoutingInvertOutlet Devices
#1Device 393.80'2.5" Vert. Orifice C = 0.600
#2Device 394.80'48.0" x 48.0" Horiz. Grate C = 0.600
#3Primary92.08'12.0" Round Culvert L = 38.0' RCP, groove end projecting, Ke = 0.200Inlet / Outlet Invert= $ 92.08'/91.65' $ S = 0.0113'/' Cc = 0.900n=0.011, Flow Area=0.79 sf
Primary OutFlow Max=0.83 cfs @ 12.17 hrs HW=94.85' TW=92.12' (Dynamic Tailwater) 3=Culvert (Passes 0.83 cfs of 6.53 cfs potential flow) 1=Orifice (Orifice Controls 0.16 cfs @ 4.69 fps) 2=Grate (Weir Controls 0.67 cfs @ 0.77 fps)
Page 430 Download HTML
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 10P: PERVIOUS PAVEMENT 2B
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Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 10P: PERVIOUS PAVEMENT 2B
Pond 10P: PERVIOUS PAVEMENT 2B
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Analysis - Proposed Conditions NO Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions Ltd
Hydrograph for Pond 10P: PERVIOUS PAVEMENT 2B
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Primary (cfs)
0.000.00093.800.00
2.000.012393.820.00
4.000.028393.870.01
6.000.0211893.900.02
8.000.0315193.920.02
10.000.0520693.970.04
12.000.6072894.540.13
14.000.0664794.370.11
16.000.0332994.070.07
18.000.0217993.950.03
20.000.0213893.910.02
22.000.0212493.900.02
24.000.0111393.890.01
26.000.005893.850.00
28.000.003893.830.00
30.000.002893.820.00
32.000.002293.820.00
34.000.001893.810.00
36.000.001593.810.00
38.000.001393.810.00
40.000.001293.810.00
42.000.001193.810.00
44.000.001093.810.00
46.000.00993.810.00
48.000.00893.810.00
50.000.00893.810.00
52.000.00793.810.00
54.000.00793.810.00
56.000.00693.810.00
58.000.00693.800.00
60.000.00593.800.00
62.000.00593.800.00
64.000.00593.800.00
66.000.00593.800.00
68.000.00593.800.00
70.000.00493.800.00
72.000.00493.800.00
Page 433 Download HTML
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Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 10P: PERVIOUS PAVEMENT 2B
Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)
93.800.0094.320.1194.840.58
93.810.0094.330.1194.850.74
93.820.0094.340.1194.860.93
93.830.0094.350.1194.871.13
93.840.0094.360.1194.881.35
93.850.0094.370.1194.891.58
93.860.0194.380.1194.901.82
93.870.0194.390.1194.912.07
93.880.0194.400.1294.922.34
93.890.0194.410.1294.932.62
93.900.0294.420.1294.942.91
93.910.0294.430.1294.953.21
93.920.0294.440.1294.963.52
93.930.0394.450.1294.973.84
93.940.0394.460.1294.984.17
93.950.0394.470.1294.994.50
93.960.0494.480.1295.004.85
93.970.0494.490.1395.015.21
93.980.0594.500.1395.025.57
93.990.0594.510.1395.035.95
94.000.0594.520.1395.046.33
94.010.0594.530.1395.056.72
94.020.0694.540.1395.066.83
94.030.0694.550.1395.076.84
94.040.0694.560.1395.086.86
94.050.0694.570.1395.096.87
94.060.0694.580.1395.106.88
94.070.0794.590.1495.116.90
94.080.0794.600.1495.126.91
94.090.0794.610.1495.136.93
94.100.0794.620.1495.146.94
94.110.0794.630.1495.156.95
94.120.0894.640.1495.166.97
94.130.0894.650.1495.176.98
94.140.0894.660.1495.186.99
94.150.0894.670.1495.197.01
94.160.0894.680.1495.207.02
94.170.0894.690.1595.217.04
94.180.0994.700.1595.227.05
94.190.0994.710.1595.237.06
94.200.0994.720.1595.247.08
94.210.0994.730.1595.257.09
94.220.0994.740.1595.267.10
94.230.0994.750.1595.277.12
94.240.1094.760.1595.287.13
94.250.1094.770.1595.297.15
94.260.1094.780.1595.307.16
94.270.1094.790.15
94.280.1094.800.16
94.290.1094.810.21
94.300.1094.820.31
94.310.1094.830.43
Page 434 Download HTML
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 12/19/2025
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Printed 12/19/2025 Page 267
Stage-Area-Storage for Pond 10P: PERVIOUS PAVEMENT 2B
Elevation (feet)Storage (cubic-feet)Elevation (feet)Storage (cubic-feet)Elevation (feet)Storage (cubic-feet)
93.80094.3262494.84969
93.811294.3362994.85999
93.822594.3463394.861,030
93.833794.3563894.871,061
93.844994.3664394.881,092
93.856194.3764794.891,122
93.867494.3865294.901,153
93.878694.3965794.911,184
93.889894.4066194.921,215
93.8911194.4166694.931,245
93.9012394.4267094.941,276
93.9113594.4367594.951,307
93.9214894.4468094.961,338
93.9316094.4568494.971,368
93.9417294.4668994.981,399
93.9518594.4769394.991,430
93.9619794.4869895.001,461
93.9720994.4970395.011,491
93.9822194.5070795.021,522
93.9923494.5171295.031,553
94.0024694.5271695.041,584
94.0125894.5372195.051,614
94.0227194.5472695.061,645
94.0328394.5573095.071,676
94.0429594.5673595.081,707
94.0530894.5774095.091,737
94.0632094.5874495.101,768
94.0733294.5974995.111,799
94.0834494.6075395.121,830
94.0935794.6175895.131,860
94.1036994.6276395.141,891
94.1138194.6376795.151,922
94.1239494.6477295.161,953
94.1340694.6577695.171,983
94.1441894.6678195.182,014
94.1543094.6778695.192,045
94.1644394.6879095.202,076
94.1745594.6979595.212,106
94.1846794.7080095.222,137
94.1948094.7180495.232,168
94.2049294.7280995.242,199
94.2150494.7381395.252,229
94.2251794.7481895.262,260
94.2352994.7582395.272,291
94.2454194.7682795.282,322
94.2555494.7783295.292,352
94.2656694.7883695.302,383
94.2757894.79841
94.2859094.80846
94.2960394.81876
94.3061594.82907
94.3162094.83938
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Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 15P: PERVIOUS PAVEMENT 3B
Inflow Area = 8,712 sf,100.00% Impervious, Inflow Depth = 6.10" for 10 YR-F event Inflow = 1.10 cfs @ 12.12 hrs, Volume= 4,430 cf Outflow = 0.94 cfs @ 12.16 hrs, Volume= 4,426 cf, Atten= 15%, Lag= 2.4 min Primary = 0.94 cfs @ 12.16 hrs, Volume= 4,426 cf Routed to Pond 8P : INFILTRATION BASIN 3 Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 94.86' @ 12.16 hrs Surf.Area= 8,889 sf Storage= 994 cf Plug-Flow detention time= 80.1 min calculated for 4,426 cf (100% of inflow) Center-of-Mass det. time= 79.5 min ( 825.8 - 746.4 )
VolumeInvertAvail.StorageStorage Description
#193.80'593 cfStone Storage Bed (Prismatic)Listed below (Recalc) 1,482 cf Overall ร— 40.0% Voids
#294.30'222 cfSurface and Base Course (Prismatic)Listed below (Recalc) 1,482 cf Overall ร— 15.0% Voids
#394.80'1,482 cfSurface (Prismatic)Listed below (Recalc)
2,296 cfTotal Available Storage
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
93.802,96300
94.302,9631,4821,482
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
94.302,96300
94.802,9631,4821,482
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
94.802,96300
95.302,9631,4821,482
DeviceRoutingInvertOutlet Devices
#1Device 393.80'2.5" Vert. Orifice C = 0.600
#2Device 394.80'48.0" x 48.0" Horiz. Grate C = 0.600
#3Primary92.00'12.0" Round Culvert L = 52.0' RCP, groove end projecting, Ke = 0.200Inlet / Outlet Invert= $ 92.00'/90.75' $ S = 0.0240'/' Cc = 0.900n=0.011, Flow Area=0.79 sf
Primary OutFlow Max=0.94 cfs @ 12.16 hrs HW=94.86' TW=90.90' (Dynamic Tailwater) 3=Culvert (Passes 0.94 cfs of 7.22 cfs potential flow) 1=Orifice (Orifice Controls 0.16 cfs @ 4.71 fps) 2=Grate (Weir Controls 0.78 cfs @ 0.80 fps)
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NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 12/19/2025
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 269
Pond 15P: PERVIOUS PAVEMENT 3B
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Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 15P: PERVIOUS PAVEMENT 3B
Pond 15P: PERVIOUS PAVEMENT 3B
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NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 12/19/2025
Analysis - Proposed Conditions NO Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions Ltd
Hydrograph for Pond 15P: PERVIOUS PAVEMENT 3B
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Primary (cfs)
0.000.00093.800.00
2.000.012493.820.00
4.000.028493.870.01
6.000.0211893.900.02
8.000.0315193.930.03
10.000.0620793.970.04
12.000.6375594.670.14
14.000.0663094.380.11
16.000.0332294.070.07
18.000.0217593.950.03
20.000.0213693.920.02
22.000.0212393.900.02
24.000.0111193.890.02
26.000.005593.850.00
28.000.003693.830.00
30.000.002693.820.00
32.000.002193.820.00
34.000.001793.810.00
36.000.001493.810.00
38.000.001393.810.00
40.000.001193.810.00
42.000.001093.810.00
44.000.00993.810.00
46.000.00893.810.00
48.000.00893.810.00
50.000.00793.810.00
52.000.00793.810.00
54.000.00693.810.00
56.000.00693.800.00
58.000.00593.800.00
60.000.00593.800.00
62.000.00593.800.00
64.000.00593.800.00
66.000.00493.800.00
68.000.00493.800.00
70.000.00493.800.00
72.000.00493.800.00
Page 271
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NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 12/19/2025
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 272
Stage-Discharge for Pond 15P: PERVIOUS PAVEMENT 3B
Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)
93.800.0094.320.1194.840.58
93.810.0094.330.1194.850.74
93.820.0094.340.1194.860.93
93.830.0094.350.1194.871.13
93.840.0094.360.1194.881.35
93.850.0094.370.1194.891.58
93.860.0194.380.1194.901.82
93.870.0194.390.1194.912.07
93.880.0194.400.1294.922.34
93.890.0194.410.1294.932.62
93.900.0294.420.1294.942.91
93.910.0294.430.1294.953.21
93.920.0294.440.1294.963.52
93.930.0394.450.1294.973.84
93.940.0394.460.1294.984.17
93.950.0394.470.1294.994.50
93.960.0494.480.1295.004.85
93.970.0494.490.1395.015.21
93.980.0594.500.1395.025.57
93.990.0594.510.1395.035.95
94.000.0594.520.1395.046.33
94.010.0594.530.1395.056.72
94.020.0694.540.1395.067.11
94.030.0694.550.1395.077.46
94.040.0694.560.1395.087.47
94.050.0694.570.1395.097.48
94.060.0694.580.1395.107.50
94.070.0794.590.1495.117.51
94.080.0794.600.1495.127.52
94.090.0794.610.1495.137.53
94.100.0794.620.1495.147.54
94.110.0794.630.1495.157.55
94.120.0894.640.1495.167.56
94.130.0894.650.1495.177.57
94.140.0894.660.1495.187.58
94.150.0894.670.1495.197.60
94.160.0894.680.1495.207.61
94.170.0894.690.1595.217.62
94.180.0994.700.1595.227.63
94.190.0994.710.1595.237.64
94.200.0994.720.1595.247.65
94.210.0994.730.1595.257.66
94.220.0994.740.1595.267.67
94.230.0994.750.1595.277.68
94.240.1094.760.1595.287.69
94.250.1094.770.1595.297.70
94.260.1094.780.1595.307.72
94.270.1094.790.15
94.280.1094.800.16
94.290.1094.810.21
94.300.1094.820.31
94.310.1094.830.43
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NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 12/19/2025
10 YR-F Rainfall=6.34" Printed 12/19/2025 Page 273
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Area-Storage for Pond 15P: PERVIOUS PAVEMENT 3B
Elevation (feet)Storage (cubic-feet)Elevation (feet)Storage (cubic-feet)Elevation (feet)Storage (cubic-feet)
93.80094.3260194.84933
93.811294.3360694.85963
93.822494.3461094.86993
93.833694.3561594.871,022
93.844794.3661994.881,052
93.855994.3762494.891,081
93.867194.3862894.901,111
93.878394.3963394.911,141
93.889594.4063794.921,170
93.8910794.4164194.931,200
93.9011994.4264694.941,230
93.9113094.4365094.951,259
93.9214294.4465594.961,289
93.9315494.4565994.971,319
93.9416694.4666494.981,348
93.9517894.4766894.991,378
93.9619094.4867395.001,407
93.9720194.4967795.011,437
93.9821394.5068195.021,467
93.9922594.5168695.031,496
94.0023794.5269095.041,526
94.0124994.5369595.051,556
94.0226194.5469995.061,585
94.0327394.5570495.071,615
94.0428494.5670895.081,644
94.0529694.5771395.091,674
94.0630894.5871795.101,704
94.0732094.5972195.111,733
94.0833294.6072695.121,763
94.0934494.6173095.131,793
94.1035694.6273595.141,822
94.1136794.6373995.151,852
94.1237994.6474495.161,882
94.1339194.6574895.171,911
94.1440394.6675395.181,941
94.1541594.6775795.191,970
94.1642794.6876195.202,000
94.1743994.6976695.212,030
94.1845094.7077095.222,059
94.1946294.7177595.232,089
94.2047494.7277995.242,119
94.2148694.7378495.252,148
94.2249894.7478895.262,178
94.2351094.7579395.272,207
94.2452194.7679795.282,237
94.2553394.7780195.292,267
94.2654594.7880695.302,296
94.2755794.79810
94.2856994.80815
94.2958194.81844
94.3059394.82874
94.3159794.83904
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Analysis - Proposed Conditions NOAA 24-hr D 10 YR-F Rainfall=6.34" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 274
Summary for Pond 33P: INFILTRATION BASIN 2
Inflow Area = 27,007 sf, 30.65% Impervious, Inflow Depth = 2.23" for 10 YR-F event
Inflow = 0.83 cfs @ 12.17 hrs, Volume= 5,011 cf
Outflow = 0.13 cfs @ 14.16 hrs, Volume= 5,011 cf, Atten= 84%, Lag= 119.3 min
Discarded = 0.13 cfs @ 14.16 hrs, Volume= 5,011 cf
Primary = 0.00 cfs @ 0.00 hrs, Volume= 0 cf
Routed to Link 33L : POA 2
Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs
Peak Elev= 93.12' @ 14.16 hrs Surf.Area= 1,156 sf Storage= 1,207 cf
Plug-Flow detention time= 86.8 min calculated for 5,011 cf (100% of inflow)
Center-of-Mass det. time= 86.8 min ( 945.7 - 858.9 )
Volume Invert Avail.Storage Storage Description
#1 91.65' 4,378 cf Custom Stage Data (Prismatic)Listed below (Recalc)
Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet)
91.65 520 0 0
92.00 651 205 205
93.00 1,094 873 1,077
94.00 1,629 1,362 2,439
95.00 2,249 1,939 4,378
Device Routing Invert Outlet Devices
#2 Device 3 94.70' 48.0" x 48.0" Horiz. Grate C= 0.600
#1 Device 3 93.65' 2.5" Vert. Orifice C= 0.600 Limited to weir flow at low heads
#3 Primary 93.65' 12.0" Round Culvert L= 17.0' RCP, groove end projecting, Ke= 0.200
Inlet / Outlet Invert= 93.65' / 93.50' S= 0.0088 /' Cc= 0.900
n= 0.012 Concrete pipe, finished, Flow Area= 0.79 sf
#4 Discarded 91.65' 4.950 in/hr Exfiltration over Surface area Phase-In= 0.01'
Discarded OutFlow Max=0.13 cfs @ 14.16 hrs HW=93.12' (Free Discharge)
4=Exfiltration (Exfiltration Controls 0.13 cfs)
Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=91.65' TW=0.00' (Dynamic Tailwater)
3=Culvert ( Controls 0.00 cfs)
1=Orifice ( Controls 0.00 cfs)
2=Grate ( Controls 0.00 cfs)
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Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 275
Pond 33P: INFILTRATION BASIN 2
Pond 33P: INFILTRATION BASIN 2
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Page 276
Pond 33P: INFILTRATION BASIN 2
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Page 277
Hydrograph for Pond 33P: INFILTRATION BASIN 2
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Outflow (cfs)Discarded (cfs)Primary (cfs)
0.000.00091.650.000.000.00
2.000.00091.650.000.000.00
4.000.01191.650.010.010.00
6.000.02191.650.020.020.00
8.000.02291.650.020.020.00
10.000.04491.660.040.040.00
12.000.136891.780.060.060.00
14.000.141,20493.110.130.130.00
16.000.091,06392.990.120.120.00
18.000.0569592.620.110.110.00
20.000.0329792.130.080.080.00
22.000.031391.680.060.060.00
24.000.02291.650.020.020.00
26.000.00091.650.000.000.00
28.000.00091.650.000.000.00
30.000.00091.650.000.000.00
32.000.00091.650.000.000.00
34.000.00091.650.000.000.00
36.000.00091.650.000.000.00
38.000.00091.650.000.000.00
40.000.00091.650.000.000.00
42.000.00091.650.000.000.00
44.000.00091.650.000.000.00
46.000.00091.650.000.000.00
48.000.00091.650.000.000.00
50.000.00091.650.000.000.00
52.000.00091.650.000.000.00
54.000.00091.650.000.000.00
56.000.00091.650.000.000.00
58.000.00091.650.000.000.00
60.000.00091.650.000.000.00
62.000.00091.650.000.000.00
64.000.00091.650.000.000.00
66.000.00091.650.000.000.00
68.000.00091.650.000.000.00
70.000.00091.650.000.000.00
72.000.00091.650.000.000.00
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Analysis - Proposed Conditions NOAA 24-hr D 10 YR-F Rainfall=6.34" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 278
Stage-Discharge for Pond 33P: INFILTRATION BASIN 2
Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)
91.650.000.000.0094.250.320.200.12
91.700.060.060.0094.300.330.210.12
91.750.060.060.0094.350.340.210.13
91.800.070.070.0094.400.350.220.13
91.850.070.070.0094.450.360.220.14
91.900.070.070.0094.500.360.220.14
91.950.070.070.0094.550.370.230.15
92.000.070.070.0094.600.380.230.15
92.050.080.080.0094.650.390.230.16
92.100.080.080.0094.700.400.240.16
92.150.080.080.0094.750.990.240.75
92.200.080.080.0094.802.070.241.82
92.250.090.090.0094.853.460.253.21
92.300.090.090.0094.903.580.253.33
92.350.090.090.0094.953.670.253.41
92.400.090.090.0095.003.720.263.46
92.450.100.100.00
92.500.100.100.00
92.550.100.100.00
92.600.110.110.00
92.650.110.110.00
92.700.110.110.00
92.750.110.110.00
92.800.120.120.00
92.850.120.120.00
92.900.120.120.00
92.950.120.120.00
93.000.130.130.00
93.050.130.130.00
93.100.130.130.00
93.150.130.130.00
93.200.140.140.00
93.250.140.140.00
93.300.140.140.00
93.350.150.150.00
93.400.150.150.00
93.450.150.150.00
93.500.160.160.00
93.550.160.160.00
93.600.160.160.00
93.650.170.170.00
93.700.170.170.00
93.750.190.170.02
93.800.210.170.03
93.850.230.180.05
93.900.240.180.06
93.950.260.180.07
94.000.270.190.08
94.050.280.190.09
94.100.290.190.10
94.150.300.200.10
94.200.310.200.11
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Area-Storage for Pond 33P: INFILTRATION BASIN 2
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
91.655200
91.7053926
91.7555754
91.8057682
91.85595111
91.90614142
91.95632173
92.00651205
92.05673238
92.10695272
92.15717308
92.20740344
92.25762382
92.30784420
92.35806460
92.40828501
92.45850543
92.50873586
92.55895630
92.60917675
92.65939722
92.70961769
92.75983818
92.801,005867
92.851,028918
92.901,050970
92.951,0721,023
93.001,0941,077
93.051,1211,133
93.101,1481,190
93.151,1741,248
93.201,2011,307
93.251,2281,368
93.301,2551,430
93.351,2811,493
93.401,3081,558
93.451,3351,624
93.501,3621,691
93.551,3881,760
93.601,4151,830
93.651,4421,902
93.701,4691,974
93.751,4952,048
93.801,5222,124
93.851,5492,201
93.901,5762,279
93.951,6022,358
94.001,6292,439
94.051,6602,521
94.101,6912,605
94.151,7222,690
94.201,7532,777
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
94.251,7842,866
94.301,8152,956
94.351,8463,047
94.401,8773,140
94.451,9083,235
94.501,9393,331
94.551,9703,429
94.602,0013,528
94.652,0323,629
94.702,0633,731
94.752,0943,835
94.802,1253,941
94.852,1564,048
94.902,1874,156
94.952,2184,266
95.002,2494,378
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Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 42P: BIORENTION BASIN 3A
Inflow Area = 29,621 sf, 0.00% Impervious, Inflow Depth = 0.55" for 10 YR-F event Inflow = 0.10 cfs @ 12.57 hrs, Volume = 1,351 cf Outflow = 0.07 cfs @ 13.32 hrs, Volume = 1,251 cf, Atten = 33%, Lag = 44.9 min Primary = 0.07 cfs @ 13.32 hrs, Volume = 1,251 cf Routed to Pond 8P : INFILTRATION BASIN 3
Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 94.07' @ 13.32 hrs Surf.Area= 480 sf Storage= 204 cf Plug-Flow detention time= 82.4 min calculated for 1,251 cf (93% of inflow) Center-of-Mass det. time= 49.0 min (1,029.7 - 980.8)
VolumeInvertAvail.StorageStorage Description
#193.30'1,041 cfCustom Stage Data (Prismatic)Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
93.307700
94.00417173173
95.001,3198681,041
DeviceRoutingInvertOutlet Devices
#1Device 393.80'2.5" Vert. Orifice C= 0.600 Limited to weir flow at low heads
#2Device 394.50'48.0" x 48.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads
#3Primary90.80'12.0" Round Culvert L= 11.0' RCP, groove end projecting, Ke= 0.200 Inlet / Outlet Invert= 90.80' / 90.75' S= 0.0045 ' /' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 0.79 sf
Primary OutFlow Max=0.07 cfs @ 13.32 hrs HW=94.07' TW=91.14' (Dynamic Tailwater) 3=Culvert (Passes 0.07 cfs of 7.85 cfs potential flow) 1=Orifice (Orifice Controls 0.07 cfs @ 1.96 fps) 2=Grate ( Controls 0.00 cfs)
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Pond 42P: BIORENTION BASIN 3A
Pond 42P: BIORENTION BASIN 3A
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Pond 42P: BIORENTION BASIN 3A
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Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LL
Hydrograph for Pond 42P: BIORENTION BASIN 3A
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Primary (cfs)
0.000.00093.300.00
2.000.00093.300.00
4.000.00093.300.00
6.000.00093.300.00
8.000.00093.300.00
10.000.00093.300.00
12.000.00093.300.00
14.000.0518494.030.06
16.000.0314993.940.03
18.000.0214093.920.02
20.000.0213693.910.02
22.000.0213493.900.02
24.000.0213193.890.02
26.000.0010793.820.00
28.000.0010393.810.00
30.000.0010293.810.00
32.000.0010193.810.00
34.000.0010193.800.00
36.000.0010093.800.00
38.000.0010093.800.00
40.000.0010093.800.00
42.000.0010093.800.00
44.000.0010093.800.00
46.000.0010093.800.00
48.000.0010093.800.00
50.000.0010093.800.00
52.000.0010093.800.00
54.000.0010093.800.00
56.000.0010093.800.00
58.000.0010093.800.00
60.000.0010093.800.00
62.000.0010093.800.00
64.000.0010093.800.00
66.000.0010093.800.00
68.000.0010093.800.00
70.000.0010093.800.00
72.000.0010093.800.00
Page 283
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Stage-Discharge for Pond 42P: BIORENTION BASIN 3A
Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)
93.300.0093.820.0094.340.11
93.310.0093.830.0094.350.11
93.320.0093.840.0094.360.11
93.330.0093.850.0094.370.11
93.340.0093.860.0194.380.11
93.350.0093.870.0194.390.11
93.360.0093.880.0194.400.12
93.370.0093.890.0194.410.12
93.380.0093.900.0294.420.12
93.390.0093.910.0294.430.12
93.400.0093.920.0294.440.12
93.410.0093.930.0394.450.12
93.420.0093.940.0394.460.12
93.430.0093.950.0394.470.12
93.440.0093.960.0494.480.12
93.450.0093.970.0494.490.13
93.460.0093.980.0594.500.13
93.470.0093.990.0594.510.18
93.480.0094.000.0594.520.28
93.490.0094.010.0594.530.40
93.500.0094.020.0694.540.55
93.510.0094.030.0694.550.72
93.520.0094.040.0694.560.90
93.530.0094.050.0694.571.10
93.540.0094.060.0694.581.32
93.550.0094.070.0794.591.55
93.560.0094.080.0794.601.79
93.570.0094.090.0794.612.05
93.580.0094.100.0794.622.31
93.590.0094.110.0794.632.59
93.600.0094.120.0894.642.88
93.610.0094.130.0894.653.18
93.620.0094.140.0894.663.49
93.630.0094.150.0894.673.81
93.640.0094.160.0894.684.14
93.650.0094.170.0894.694.48
93.660.0094.180.0994.704.83
93.670.0094.190.0994.715.18
93.680.0094.200.0994.725.55
93.690.0094.210.0994.735.92
93.700.0094.220.0994.746.30
93.710.0094.230.0994.756.69
93.720.0094.240.1094.767.09
93.730.0094.250.1094.777.49
93.740.0094.260.1094.787.91
93.750.0094.270.1094.798.33
93.760.0094.280.1094.808.75
93.770.0094.290.1094.818.86
93.780.0094.300.1094.828.87
93.790.0094.310.1094.838.88
93.800.0094.320.1194.848.89
93.810.0094.330.1194.858.91
Elevation (feet)Primary (cfs)
94.868.92
94.878.93
94.888.94
94.898.96
94.908.97
94.918.98
94.928.99
94.939.01
94.949.02
94.959.03
94.969.04
94.979.06
94.989.07
94.999.08
95.009.09
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Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Area-Storage for Pond 42P: BIORENTION BASIN 3A
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
93.3077094.34724367
93.3287294.36742381
93.3496394.38760396
93.36106594.40778412
93.38116894.42796428
93.401261094.44814444
93.421351394.46832460
93.441451694.48850477
93.461551994.50868494
93.481642294.52886512
93.501742594.54904530
93.521842994.56922548
93.541943294.58940566
93.562033694.60958585
93.582134194.62976605
93.602234594.64994625
93.622325094.661,012645
93.642425494.681,030665
93.662525994.701,048686
93.682626494.721,066707
93.702717094.741,084728
93.722817594.761,103750
93.742918194.781,121773
93.763008794.801,139795
93.783109394.821,157818
93.803209994.841,175841
93.8233010694.861,193865
93.8433911294.881,211889
93.8634911994.901,229914
93.8835912694.921,247938
93.9036813494.941,265963
93.9237814194.961,283989
93.9438814994.981,3011,015
93.9639815795.001,3191,041
93.98407165
94.00417173
94.02435181
94.04453190
94.06471200
94.08489209
94.10507219
94.12525229
94.14543240
94.16561251
94.18579263
94.20597274
94.22615286
94.24633299
94.26652312
94.28670325
94.30688339
94.32706353
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Summary for Link 32L: POA1
Inflow Area =73,567 sf,27.76% Impervious,Inflow Depth = 0.00" for 10 YR-F event
Inflow =0.00 cfs @0.00 hrs,0 cf
Primary =0.00 cfs @0.00 hrs,0 cf,
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 32L: POA1
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R-F Rainfall=6.34" Printed 12/19/2025 Page 287
Hydrograph for Link 32L: POA1
Time (hours)Inflow (cfs)Elevation (feet)Primary (cfs)
0.000.000.000.00
1.000.000.000.00
2.000.000.000.00
3.000.000.000.00
4.000.000.000.00
5.000.000.000.00
6.000.000.000.00
7.000.000.000.00
8.000.000.000.00
9.000.000.000.00
10.000.000.000.00
11.000.000.000.00
12.000.000.000.00
13.000.000.000.00
14.000.000.000.00
15.000.000.000.00
16.000.000.000.00
17.000.000.000.00
18.000.000.000.00
19.000.000.000.00
20.000.000.000.00
21.000.000.000.00
22.000.000.000.00
23.000.000.000.00
24.000.000.000.00
25.000.000.000.00
26.000.000.000.00
27.000.000.000.00
28.000.000.000.00
29.000.000.000.00
30.000.000.000.00
31.000.000.000.00
32.000.000.000.00
33.000.000.000.00
34.000.000.000.00
35.000.000.000.00
36.000.000.000.00
37.000.000.000.00
38.000.000.000.00
39.000.000.000.00
40.000.000.000.00
41.000.000.000.00
42.000.000.000.00
43.000.000.000.00
44.000.000.000.00
45.000.000.000.00
46.000.000.000.00
47.000.000.000.00
48.000.000.000.00
49.000.000.000.00
50.000.000.000.00
51.000.000.000.00
Time (hours)Inflow (cfs)Elevation (feet)Primary (cfs)
52.000.000.000.00
53.000.000.000.00
54.000.000.000.00
55.000.000.000.00
56.000.000.000.00
57.000.000.000.00
58.000.000.000.00
59.000.000.000.00
60.000.000.000.00
61.000.000.000.00
62.000.000.000.00
63.000.000.000.00
64.000.000.000.00
65.000.000.000.00
66.000.000.000.00
67.000.000.000.00
68.000.000.000.00
69.000.000.000.00
70.000.000.000.00
71.000.000.000.00
72.000.000.000.00
Page 455 Download HTML
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 12/19/2025
YR-F Rainfall=6.34" Printed 12/19/2025 Page 288
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Link 33L: POA 2
Inflow Area = 27,007 sf, 30.65% Impervious, Inflow Depth = 0.00" for 10 YR-F event Inflow = 0.00 cfs @ 0.00 hrs, Volume = 0 cf Primary = 0.00 cfs @ 0.00 hrs, Volume = 0 cf, Atten = 0%, Lag = 0.0 min
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 33L: POA 2
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NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 12/19/2025
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LL
R-F Rainfall=6.34" printed 12/19/2025 Page 289
Hydrograph for Link 33L: POA 2
Time (hours)Inflow (cfs)Elevation (feet)Primary (cfs)
0.000.000.000.00
1.000.000.000.00
2.000.000.000.00
3.000.000.000.00
4.000.000.000.00
5.000.000.000.00
6.000.000.000.00
7.000.000.000.00
8.000.000.000.00
9.000.000.000.00
10.000.000.000.00
11.000.000.000.00
12.000.000.000.00
13.000.000.000.00
14.000.000.000.00
15.000.000.000.00
16.000.000.000.00
17.000.000.000.00
18.000.000.000.00
19.000.000.000.00
20.000.000.000.00
21.000.000.000.00
22.000.000.000.00
23.000.000.000.00
24.000.000.000.00
25.000.000.000.00
26.000.000.000.00
27.000.000.000.00
28.000.000.000.00
29.000.000.000.00
30.000.000.000.00
31.000.000.000.00
32.000.000.000.00
33.000.000.000.00
34.000.000.000.00
35.000.000.000.00
36.000.000.000.00
37.000.000.000.00
38.000.000.000.00
39.000.000.000.00
40.000.000.000.00
41.000.000.000.00
42.000.000.000.00
43.000.000.000.00
44.000.000.000.00
45.000.000.000.00
46.000.000.000.00
47.000.000.000.00
48.000.000.000.00
49.000.000.000.00
50.000.000.000.00
51.000.000.000.00
Time (hours)Inflow (cfs)Elevation (feet)Primary (cfs)
52.000.000.000.00
53.000.000.000.00
54.000.000.000.00
55.000.000.000.00
56.000.000.000.00
57.000.000.000.00
58.000.000.000.00
59.000.000.000.00
60.000.000.000.00
61.000.000.000.00
62.000.000.000.00
63.000.000.000.00
64.000.000.000.00
65.000.000.000.00
66.000.000.000.00
67.000.000.000.00
68.000.000.000.00
69.000.000.000.00
70.000.000.000.00
71.000.000.000.00
72.000.000.000.00
Page 457 Download HTML
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 12/19/2025 ons LLC Page 290
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Link 34L: POA 3
Inflow Area = 38,333 sf, 22.73% Impervious, Inflow Depth = 0.00" for 10 YR-F event Inflow = 0.00 cfs @ 0.00 hrs, Volume= 0 cf Primary = 0.00 cfs @ 0.00 hrs, Volume= 0 cf, Atten=0%, Lag=0.0 min
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 34L: POA 3
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NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 12/19/2025
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LL
R-F Rainfall=6.34" Printed 12/19/2025 Page 291
Hydrograph for Link 34L: POA 3
Time (hours)Inflow (cfs)Elevation (feet)Primary (cfs)
0.000.000.000.00
1.000.000.000.00
2.000.000.000.00
3.000.000.000.00
4.000.000.000.00
5.000.000.000.00
6.000.000.000.00
7.000.000.000.00
8.000.000.000.00
9.000.000.000.00
10.000.000.000.00
11.000.000.000.00
12.000.000.000.00
13.000.000.000.00
14.000.000.000.00
15.000.000.000.00
16.000.000.000.00
17.000.000.000.00
18.000.000.000.00
19.000.000.000.00
20.000.000.000.00
21.000.000.000.00
22.000.000.000.00
23.000.000.000.00
24.000.000.000.00
25.000.000.000.00
26.000.000.000.00
27.000.000.000.00
28.000.000.000.00
29.000.000.000.00
30.000.000.000.00
31.000.000.000.00
32.000.000.000.00
33.000.000.000.00
34.000.000.000.00
35.000.000.000.00
36.000.000.000.00
37.000.000.000.00
38.000.000.000.00
39.000.000.000.00
40.000.000.000.00
41.000.000.000.00
42.000.000.000.00
43.000.000.000.00
44.000.000.000.00
45.000.000.000.00
46.000.000.000.00
47.000.000.000.00
48.000.000.000.00
49.000.000.000.00
50.000.000.000.00
51.000.000.000.00
Time (hours)Inflow (cfs)Elevation (feet)Primary (cfs)
52.000.000.000.00
53.000.000.000.00
54.000.000.000.00
55.000.000.000.00
56.000.000.000.00
57.000.000.000.00
58.000.000.000.00
59.000.000.000.00
60.000.000.000.00
61.000.000.000.00
62.000.000.000.00
63.000.000.000.00
64.000.000.000.00
65.000.000.000.00
66.000.000.000.00
67.000.000.000.00
68.000.000.000.00
69.000.000.000.00
70.000.000.000.00
71.000.000.000.00
72.000.000.000.00
Page 459 Download HTML
Analysis - Proposed Conditions NOAA 24-hr D 100 YR-C Rainfall=9.48" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 292
Time span=0.00-72.00 hrs, dt=0.01 hrs, 7201 points Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method
Subcatchment2S: DA-P1 PERVOUSRunoff Area=1.220 ac 0.00% Impervious Runoff Depth=1.83" Flow Length=525' Tc=14.2 min CN=39/0 Runoff=1.06 cfs 8,124 cf
Subcatchment3S: DA-P3 PERVOUSRunoff Area=0.680 ac 0.00% Impervious Runoff Depth=1.83" Flow Length=363' Tc=11.5 min CN=39/0 Runoff=0.66 cfs 4,528 cf
Subcatchment4S: DA-P2 PERVOUSRunoff Area=0.430 ac 0.00% Impervious Runoff Depth=1.83" Flow Length=168' Slope=0.0300'/' Tc=8.7 min CN=39/0 Runoff=0.49 cfs 2,863 cf
Subcatchment6S: DA-P3 IMPERVOUSRunoff Area=0.200 ac 100.00% Impervious Runoff Depth=9.24" Flow Length=155' Tc=4.3 min CN=0/98 Runoff=1.65 cfs 6,708 cf
Subcatchment7S: DA-P2 IMPERVOUSRunoff Area=0.190 ac 100.00% Impervious Runoff Depth=9.24" Flow Length=172' Tc=4.3 min CN=0/98 Runoff=1.57 cfs 6,372 cf
Subcatchment8S: DA-P1 IMPERVOUSRunoff Area=0.400 ac 100.00% Impervious Runoff Depth=9.24" Flow Length=372' Slope=0.0200'/' Tc=2.5 min CN=0/98 Runoff=3.73 cfs 13,416 cf
Subcatchment14S: LOT 11 RoofRunoff Area=3,000 sf 100.00% Impervious Runoff Depth=9.24" Flow Length=40' Tc=0.3 min CN=0/98 Runoff=0.69 cfs 2,310 cf
Pond 2P: Subsurface Infiltration Basin 1 Discarded=0.57 cfs 22,343 cf Primary=0.00 cfs 0 cf Outflow=0.57 cfs 22,343 cf
Pond 5P: BIORETENTIONBASIN 1APeak Elev=95.10' Storage=7,644 cf Inflow=4.20 cfs 21,540 cf Outflow=1.89 cfs 20,033 cf
Pond 6P: BIORETENTIONBASIN 2APeak Elev=95.54' Storage=178 cf Inflow=0.49 cfs 2,863 cf Outflow=0.49 cfs 2,817 cf
Pond 8P: INFILTRATIONBASIN 3 Discarded=0.27 cfs 10,720 cf Primary=0.07 cfs 413 cf Outflow=0.34 cfs 11,133 cf
Pond 10P: PERVOUS PAVEMENT2BPeak Elev=94.88' Storage=1,105 cf Inflow=1.57 cfs 6,372 cf Outflow=1.44 cfs 6,368 cf
Pond 15P: PERVOUS PAVEMENT3BPeak Elev=94.89' Storage=1,076 cf Inflow=1.65 cfs 6,708 cf Outflow=1.53 cfs 6,704 cf
Pond 33P: INFILTRATIONBASIN 2 Discarded=0.20 cfs 8,204 cf Primary=0.10 cfs 981 cf Outflow=0.29 cfs 9,185 cf
Pond 42P: BIORENTIONBASIN 3APeak Elev=94.54' Storage=532 cf Inflow=0.66 cfs 4,528 cf Outflow=0.60 cfs 4,429 cf
Link 32L: POA1Inflow=0.00 cfs 0 cf Primary=0.00 cfs 0 cf
puy,
Page 460 Download HTML
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 12/19/2025 Page 293
Link 33L: POA2 Link 34L: POA3 Total Runoff Area = 138,907 sf Runoff Volume = 44,322 cf Average Runoff Depth = 3.83" 73.07% Pervious = 101,495 sf 26.93% Impervious = 37,412 sf
Page 461 Download HTML
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 12/19/2025 tions LLC Page 294
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 2S: DA-P1 PERVIOUS
Runoff = 1.06 cfs @ 12.28 hrs, Volume= Routed to Pond 5P : BIORETENTION BASIN 1A
8,124 cf, Depth= 1.83"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 100 YR-C Rainfall=9.48"
Page 462 Download HTML
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 12/19/2025 tions LLC Page 295
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LL
Hydrograph for Subcatchment 2S: DA-P1 PERVIOUS
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.230.000.000.00
4.000.500.000.000.00
6.000.810.000.000.00
8.001.230.000.000.00
10.001.880.000.000.00
12.004.540.120.000.16
14.007.600.990.000.25
16.008.251.260.000.14
18.008.671.450.000.10
20.008.981.590.000.09
22.009.251.720.000.08
24.009.481.830.000.06
26.009.481.830.000.00
28.009.481.830.000.00
30.009.481.830.000.00
32.009.481.830.000.00
34.009.481.830.000.00
36.009.481.830.000.00
38.009.481.830.000.00
40.009.481.830.000.00
42.009.481.830.000.00
44.009.481.830.000.00
46.009.481.830.000.00
48.009.481.830.000.00
50.009.481.830.000.00
52.009.481.830.000.00
54.009.481.830.000.00
56.009.481.830.000.00
58.009.481.830.000.00
60.009.481.830.000.00
62.009.481.830.000.00
64.009.481.830.000.00
66.009.481.830.000.00
68.009.481.830.000.00
70.009.481.830.000.00
72.009.481.830.000.00
Page 463 Download HTML
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 12/19/2025 tions LLC Page 296
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 3S: DA-P3 PERVIOUS
Runoff = 0.66 cfs @ 12.24 hrs, Volume= Routed to Pond 42P : BIORENTION BASIN 3A
4,528 cf, Depth= 1.83"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 100 YR-C Rainfall=9.48"
Area (ac) CN Description
0.680 39 >75% Grass cover, Good, HSG A
0.680 39 100.00% Pervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
9.0 83 0.0400 0.15 Sheet Flow, Grass: Dense n= 0.240 P2= 3.42" Using McCuen-Spiess flow length
0.2 10 0.0240 1.08 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps
2.2 270 2.00 Direct Entry, Pioe Flow
11.5 363 Total
Subcatchment 3S: DA-P3 PERVIOUS
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NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 12/19/2025 tions LLC Page 297
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LL
Hydrograph for Subcatchment 3S: DA-P3 PERVIOUS
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.230.000.000.00
4.000.500.000.000.00
6.000.810.000.000.00
8.001.230.000.000.00
10.001.880.000.000.00
12.004.540.120.000.12
14.007.600.990.000.13
16.008.251.260.000.08
18.008.671.450.000.06
20.008.981.590.000.05
22.009.251.720.000.04
24.009.481.830.000.04
26.009.481.830.000.00
28.009.481.830.000.00
30.009.481.830.000.00
32.009.481.830.000.00
34.009.481.830.000.00
36.009.481.830.000.00
38.009.481.830.000.00
40.009.481.830.000.00
42.009.481.830.000.00
44.009.481.830.000.00
46.009.481.830.000.00
48.009.481.830.000.00
50.009.481.830.000.00
52.009.481.830.000.00
54.009.481.830.000.00
56.009.481.830.000.00
58.009.481.830.000.00
60.009.481.830.000.00
62.009.481.830.000.00
64.009.481.830.000.00
66.009.481.830.000.00
68.009.481.830.000.00
70.009.481.830.000.00
72.009.481.830.000.00
Page 465 Download HTML
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 12/19/2025 tions LLC Page 298
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 4S: DA-P2 PERVIOUS
Runoff = 0.49 cfs @ 12.19 hrs, Volume= 2,863 cf, Depth= 1.83" Routed to Pond 6P : BIORENTION BASIN 2A
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 100 YR-C Rainfall=9.48"
Area (ac) CN Description
0.430 39 >75% Grass cover, Good, HSG A
0.430 39 100.00% Pervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
7.8 60 0.0300 0.13 Sheet Flow, Grass: Dense n= 0.240 P2= 3.42"
0.9 108 2.00 Direct Entry, Pipe Flow
8.7 168 Total
Subcatchment 4S: DA-P2 PERVIOUS
Subcatchment 4S: DA-P2 PERVIOUS
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NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 12/19/2025 tions LLC Page 299
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LL
Hydrograph for Subcatchment 4S: DA-P2 PERVIOUS
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.230.000.000.00
4.000.500.000.000.00
6.000.810.000.000.00
8.001.230.000.000.00
10.001.880.000.000.00
12.004.540.120.000.11
14.007.600.990.000.08
16.008.251.260.000.05
18.008.671.450.000.03
20.008.981.590.000.03
22.009.251.720.000.03
24.009.481.830.000.02
26.009.481.830.000.00
28.009.481.830.000.00
30.009.481.830.000.00
32.009.481.830.000.00
34.009.481.830.000.00
36.009.481.830.000.00
38.009.481.830.000.00
40.009.481.830.000.00
42.009.481.830.000.00
44.009.481.830.000.00
46.009.481.830.000.00
48.009.481.830.000.00
50.009.481.830.000.00
52.009.481.830.000.00
54.009.481.830.000.00
56.009.481.830.000.00
58.009.481.830.000.00
60.009.481.830.000.00
62.009.481.830.000.00
64.009.481.830.000.00
66.009.481.830.000.00
68.009.481.830.000.00
70.009.481.830.000.00
72.009.481.830.000.00
Page 467 Download HTML
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 12/19/2025 tions LLC Page 300
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 6S: DA-P3 IMPERVIOUS
Runoff = 1.65 cfs @ 12.12 hrs, Volume= Routed to Pond 15P : PERVIOUS PAVEMENT 3B
6,708 cf, Depth= 9.24"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 100 YR-C Rainfall=9.48"
Area (ac) CN Description
0.200 98 Paved parking, HSG A
0.200 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
3.6 37 0.0300 0.17 Sheet Flow, Grass: Short n= 0.150 P2= 3.42" Shallow Concentrated Flow, Paved Kv= 20.3 fps
0.7 118 0.0200 2.87
4.3 155 Total
Subcatchment 6S: DA-P3 IMPERVIOUS
Subcatchment 6S: DA-P3 IMPERVIOUS
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NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 12/19/2025 tions LLC Page 301
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions Ltd
Hydrograph for Subcatchment 6S: DA-P3 IMPERVIOUS
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.230.000.090.02
4.000.500.000.320.03
6.000.810.000.610.03
8.001.230.001.020.05
10.001.880.001.650.09
12.004.540.004.310.95
14.007.600.007.360.09
16.008.250.008.010.05
18.008.670.008.430.03
20.008.980.008.740.03
22.009.250.009.010.03
24.009.480.009.240.02
26.009.480.009.240.00
28.009.480.009.240.00
30.009.480.009.240.00
32.009.480.009.240.00
34.009.480.009.240.00
36.009.480.009.240.00
38.009.480.009.240.00
40.009.480.009.240.00
42.009.480.009.240.00
44.009.480.009.240.00
46.009.480.009.240.00
48.009.480.009.240.00
50.009.480.009.240.00
52.009.480.009.240.00
54.009.480.009.240.00
56.009.480.009.240.00
58.009.480.009.240.00
60.009.480.009.240.00
62.009.480.009.240.00
64.009.480.009.240.00
66.009.480.009.240.00
68.009.480.009.240.00
70.009.480.009.240.00
72.009.480.009.240.00
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Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 7S: DA-P2 IMPERVIOUS
Runoff = 1.57 cfs @ 12.12 hrs, Volume= Routed to Pond 10P : PERVIOUS PAVEMENT 2B 6,372 cf, Depth= 9.24"
6,372 cf, Depth= 9.24"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 100 YR-C Rainfall=9.48"
Area (ac) CN Description
0.190 98 Paved roads w/curbs & sewers, HSG A
0.190 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
3.5 35 0.0300 0.17 Sheet Flow,
0.8 137 0.0200 2.87 Grass: Short n= 0.150 P2= 3.42"
Shallow Concentrated Flow,
Paved Kv= 20.3 fps
4.3 172 Total
Subcatchment 7S: DA-P2 IMPERVIOUS
Subcatchment 7S: DA-P2 IMPERVIOUS
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Hydrograph for Subcatchment 7S: DA-P2 IMPERVIOUS
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.230.000.090.02
4.000.500.000.320.02
6.000.810.000.610.03
8.001.230.001.020.05
10.001.880.001.650.08
12.004.540.004.310.90
14.007.600.007.360.09
16.008.250.008.010.05
18.008.670.008.430.03
20.008.980.008.740.03
22.009.250.009.010.02
24.009.480.009.240.02
26.009.480.009.240.00
28.009.480.009.240.00
30.009.480.009.240.00
32.009.480.009.240.00
34.009.480.009.240.00
36.009.480.009.240.00
38.009.480.009.240.00
40.009.480.009.240.00
42.009.480.009.240.00
44.009.480.009.240.00
46.009.480.009.240.00
48.009.480.009.240.00
50.009.480.009.240.00
52.009.480.009.240.00
54.009.480.009.240.00
56.009.480.009.240.00
58.009.480.009.240.00
60.009.480.009.240.00
62.009.480.009.240.00
64.009.480.009.240.00
66.009.480.009.240.00
68.009.480.009.240.00
70.009.480.009.240.00
72.009.480.009.240.00
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Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 8S: DA-P1 IMPERVIOUS
Runoff = 3.73 cfs @ 12.11 hrs, Volume= Routed to Pond 5P : BIORETENTION BASIN 1A
13,416 cf, Depth= 9.24"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 100 YR-C Rainfall=9.48"
Area (ac) CN Description
0.400 98 Paved roads w/curbs & sewers, HSG A
0.400 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
1.4 235 0.0200 2.87 Shallow Concentrated Flow, Paved Kv= 20.3 fps
1.1 137 2.00 Direct Entry, Pipe Flow
2.5 372 Total
Subcatchment 8S: DA-P1_IMPERVIOUS
Subcatchment 8S: DA-P1 IMPERVIOUS
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours)
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Hydrograph for Subcatchment 8S: DA-P1 IMPERVIOUS
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.230.000.090.04
4.000.500.000.320.05
6.000.810.000.610.06
8.001.230.001.020.10
10.001.880.001.650.18
12.004.540.004.312.20
14.007.600.007.360.19
16.008.250.008.010.10
18.008.670.008.430.07
20.008.980.008.740.06
22.009.250.009.010.05
24.009.480.009.240.04
26.009.480.009.240.00
28.009.480.009.240.00
30.009.480.009.240.00
32.009.480.009.240.00
34.009.480.009.240.00
36.009.480.009.240.00
38.009.480.009.240.00
40.009.480.009.240.00
42.009.480.009.240.00
44.009.480.009.240.00
46.009.480.009.240.00
48.009.480.009.240.00
50.009.480.009.240.00
52.009.480.009.240.00
54.009.480.009.240.00
56.009.480.009.240.00
58.009.480.009.240.00
60.009.480.009.240.00
62.009.480.009.240.00
64.009.480.009.240.00
66.009.480.009.240.00
68.009.480.009.240.00
70.009.480.009.240.00
72.009.480.009.240.00
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Summary for Subcatchment 14S: LOT 11 Roof
Runoff = 0.69 cfs @ 12.09 hrs, Volume= 2,310 cf, Depth= 9.24"
Routed to Pond 2P : Subsurface Infiltration Basin 1
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 100 YR-C Rainfall=9.48"
Area (sf) CN Description
3,000 98 Roofs, HSG A
3,000 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)
0.3 40 2.00 Direct Entry, Pipe Flow
Subcatchment 14S: LOT 11 Roof
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Hydrograph for Subcatchment 14S: LOT 11 Roof
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.230.000.090.01
4.000.500.000.320.01
6.000.810.000.610.01
8.001.230.001.020.02
10.001.880.001.650.03
12.004.540.004.310.43
14.007.600.007.360.03
16.008.250.008.010.02
18.008.670.008.430.01
20.008.980.008.740.01
22.009.250.009.010.01
24.009.480.009.240.01
26.009.480.009.240.00
28.009.480.009.240.00
30.009.480.009.240.00
32.009.480.009.240.00
34.009.480.009.240.00
36.009.480.009.240.00
38.009.480.009.240.00
40.009.480.009.240.00
42.009.480.009.240.00
44.009.480.009.240.00
46.009.480.009.240.00
48.009.480.009.240.00
50.009.480.009.240.00
52.009.480.009.240.00
54.009.480.009.240.00
56.009.480.009.240.00
58.009.480.009.240.00
60.009.480.009.240.00
62.009.480.009.240.00
64.009.480.009.240.00
66.009.480.009.240.00
68.009.480.009.240.00
70.009.480.009.240.00
72.009.480.009.240.00
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 2P: Subsurface Infiltration Basin 1
Inflow Area = 73,567 sf, 27.76% Impervious, Inflow Depth = 3.64" for 100 YR-C event
Inflow = 2.01 cfs @ 12.36 hrs, Volume= 22,343 cf
Outflow = 0.57 cfs @ 12.04 hrs, Volume= 22,343 cf, Atten= 72%, Lag= 0.0 min
Discarded = 0.57 cfs @ 12.04 hrs, Volume= 22,343 cf
Primary = 0.00 cfs @ 0.00 hrs, Volume= 0 cf
Routed to Link 32L : POA1
Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs
Peak Elev= 89.07' @ 13.63 hrs Surf.Area= 2,475 sf Storage= 2,711 cf
Plug-Flow detention time= 22.7 min calculated for 22,340 cf (100% of inflow)
Center-of-Mass det. time= 22.7 min ( 1,037.0 - 1,014.3 )
Volume Invert Avail.Storage Storage Description
#1A 87.00' 4,349 cf 27.50'W x 90.00'L x 6.00'H Field A
#2A 87.50' 3,188 cf 14,850 cf Overall - 3,979 cf Embedded = 10,871 cf x 40.0% Voids
Inside= 36.1"W x 36.1"H => 7.10 sf x 20.00'L = 142.0 cf
7,536 cf Total Available Storage
ADS N-12 36" x 20 Inside #1
Outside= 42.0"W x 42.0"H => 8.86 sf x 20.00'L = 177.2 cf
20 Chambers in 5 Rows
24.50' Header x 7.10 sf x 2 = 347.9 cf Inside
Storage Group A created with Chamber Wizard
Device Routing Invert Outlet Devices #1 Primary 92.59' 48.0" x 48.0" Horiz. Grate C= 0.600 #2 Device 1 88.00' 12.0" Round Culvert L= 119.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 88.00' / 86.00' S= 0.0168'/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 0.79 sf #3 Discarded 87.00' 10.000 in/hr Exfiltration over Surface area Phase-In= 0.01' Discarded OutFlow Max=0.57 cfs @ 12.04 hrs HW=87.07' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.57 cfs) Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=87.00' TW=0.00' (Dynamic Tailwater) 1=Grate ( Controls 0.00 cfs) 2=Culvert ( Controls 0.00 cfs) Pond 2P: Subsurface Infiltration Basin 1
Pond 2P: Subsurface Infiltration Basin 1Grate
Culvert Exfiltration
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Pond 2P: Subsurface Infiltration Basin 1 - Chamber Wizard Field A
Chamber Model = ADS N-12 36" (ADS N-12ยฎ Pipe) Inside= 36.1"W x 36.1"H => 7.10 sf x 20.00'L = 142.0 cf Outside= 42.0"W x 42.0"H => 8.86 sf x 20.00'L = 177.2 cf 42.0" Wide + 21.0" Spacing = 63.0" C-C Row Spacing 4 Chambers/Row x 20.00' Long +3.50' Header x 2 = 87.00' Row Length +18.0" End Stone x 2 = 90.00' Base Length 5 Rows x 42.0" Wide + 21.0" Spacing x 4 + 18.0" Side Stone x 2 = 27.50' Base Width 6.0" Stone Base + 42.0" Chamber Height + 24.0" Stone Cover = 6.00' Field Height 20 Chambers x 142.0 cf + 24.50' Header x 7.10 sf x 2 = 3,187.9 cf Chamber Storage 20 Chambers x 177.2 cf + 24.50' Header x 8.86 sf x 2 = 3,978.6 cf Displacement 14,850.0 cf Field - 3,978.6 cf Chambers = 10,871.4 cf Stone x 40.0% Voids = 4,348.5 cf Stone Storage Chamber Storage + Stone Storage = 7,536.4 cf = 0.173 af Overall Storage Efficiency = 50.8% Overall System Size = 90.00' x 27.50' x 6.00' 20 Chambers 550.0 cy Field 402.6 cy Stone
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Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 2P: Subsurface Infiltration Basin 1
Pond 2P: Subsurface Infiltration Basin 1
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Pond 2P: Subsurface Infiltration Basin 1
Stage-Area-Storage
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 2P: Subsurface Infiltration Basin 1
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Outflow (cfs)Discarded (cfs)Primary (cfs)
0.000.00087.000.000.000.00
2.000.01087.000.010.010.00
4.000.01087.000.010.010.00
6.000.01087.000.010.010.00
8.000.02087.000.020.020.00
10.000.12287.000.120.120.00
12.000.662687.030.570.570.00
14.000.472,63689.030.570.570.00
16.000.341,18288.150.570.570.00
18.000.31587.010.310.310.00
20.000.28587.000.280.280.00
22.000.25487.000.250.250.00
24.000.21487.000.210.210.00
26.000.15387.000.150.150.00
28.000.08187.000.080.080.00
30.000.02087.000.020.020.00
32.000.01087.000.010.010.00
34.000.00087.000.000.000.00
36.000.00087.000.000.000.00
38.000.00087.000.000.000.00
40.000.00087.000.000.000.00
42.000.00087.000.000.000.00
44.000.00087.000.000.000.00
46.000.00087.000.000.000.00
48.000.00087.000.000.000.00
50.000.00087.000.000.000.00
52.000.00087.000.000.000.00
54.000.00087.000.000.000.00
56.000.00087.000.000.000.00
58.000.00087.000.000.000.00
60.000.00087.000.000.000.00
62.000.00087.000.000.000.00
64.000.00087.000.000.000.00
66.000.00087.000.000.000.00
68.000.00087.000.000.000.00
70.000.00087.000.000.000.00
72.000.00087.000.000.000.00
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Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 2P: Subsurface Infiltration Basin 1
Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)
87.000.000.000.00
87.100.570.570.00
87.200.570.570.00
87.300.570.570.00
87.400.570.570.00
87.500.570.570.00
87.600.570.570.00
87.700.570.570.00
87.800.570.570.00
87.900.570.570.00
88.000.570.570.00
88.100.570.570.00
88.200.570.570.00
88.300.570.570.00
88.400.570.570.00
88.500.570.570.00
88.600.570.570.00
88.700.570.570.00
88.800.570.570.00
88.900.570.570.00
89.000.570.570.00
89.100.570.570.00
89.200.570.570.00
89.300.570.570.00
89.400.570.570.00
89.500.570.570.00
89.600.570.570.00
89.700.570.570.00
89.800.570.570.00
89.900.570.570.00
90.000.570.570.00
90.100.570.570.00
90.200.570.570.00
90.300.570.570.00
90.400.570.570.00
90.500.570.570.00
90.600.570.570.00
90.700.570.570.00
90.800.570.570.00
90.900.570.570.00
91.000.570.570.00
91.100.570.570.00
91.200.570.570.00
91.300.570.570.00
91.400.570.570.00
91.500.570.570.00
91.600.570.570.00
91.700.570.570.00
91.800.570.570.00
91.900.570.570.00
92.000.570.570.00
92.100.570.570.00
Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)
92.200.570.570.00
92.300.570.570.00
92.400.570.570.00
92.500.570.570.00
92.600.630.570.05
92.701.540.570.97
92.801.910.571.33
92.902.190.571.62
93.002.440.571.86
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YR-C Rainfall=9.48" Printed 12/19/2025 Page 314
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Area-Storage for Pond 2P: Subsurface Infiltration Basin 1
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
87.002,4750
87.102,47599
87.202,475198
87.302,475297
87.402,475396
87.502,475495
87.602,475581
87.702,475657
87.802,475739
87.902,475852
88.002,475980
88.102,4751,118
88.202,4751,264
88.302,4751,416
88.402,4751,573
88.502,4751,735
88.602,4751,900
88.702,4752,069
88.802,4752,240
88.902,4752,412
89.002,4752,587
89.102,4752,762
89.202,4752,938
89.302,4753,114
89.402,4753,290
89.502,4753,465
89.602,4753,639
89.702,4753,812
89.802,4753,983
89.902,4754,151
90.002,4754,316
90.102,4754,478
90.202,4754,636
90.302,4754,788
90.402,4754,934
90.502,4755,072
90.602,4755,200
90.702,4755,313
90.802,4755,395
90.902,4755,470
91.002,4755,556
91.102,4755,655
91.202,4755,754
91.302,4755,853
91.402,4755,952
91.502,4756,051
91.602,4756,150
91.702,4756,249
91.802,4756,348
91.902,4756,447
92.002,4756,546
92.102,4756,645
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
92.202,4756,744
92.302,4756,843
92.402,4756,942
92.502,4757,041
92.602,4757,140
92.702,4757,239
92.802,4757,338
92.902,4757,437
93.002,4757,536
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Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LL
Summary for Pond 5P: BIORETENTION BASIN 1A
Inflow Area = 70,567 sf, 24.69% Impervious, Inflow Depth = 3.66" for 100 YR-C event Inflow = 4.20 cfs @ 12.11 hrs, Volume = 21,540 cf Outflow = 1.89 cfs @ 12.36 hrs, Volume = 20,033 cf, Atten = 55%, Lag = 15.2 min Primary = 1.89 cfs @ 12.36 hrs, Volume = 20,033 cf Routed to Pond 2P: Subsurface Infiltration Basin 1
Routed to Pond 2P : Subsurface Infiltration Basin 1
Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 95.10' @ 12.36 hrs Surf.Area= 1,500 sf Storage= 7,644 cf Plug-Flow detention time= 277.7 min calculated for 20,030 cf (93% of inflow) Center-of-Mass det. time= 237.6 min (1,046.5 - 808.9)
VolumeInvertAvail.StorageStorage Description
#190.00'8,250 cfCustom Stage Data (Prismatic)Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
90.001,50000
95.501,5008,2508,250
DeviceRoutingInvertOutlet Devices
#1Device 391.00'2.5" Vert. Orifice C = 0.600 Limited to weir flow at low heads
#2Device 395.00'48.0" x 48.0" Horiz. Grate C = 0.600 Limited to weir flow at low heads
#3Primary87.48'12.0" Round Culvert\n L = 28.0' RCP, groove end projecting, Ke = 0.200\nInlet / Outlet Invert= $ 87.48'/87.00' $ S = 0.0171'/' Cc = 0.900\n n = 0.012 Concrete pipe, finished, Flow Area= $ 0.79 $ sf
Primary OutFlow Max=1.88 cfs @ 12.36 hrs HW=95.10' TW=87.34' (Dynamic Tailwater) 3=Culvert (Passes 1.88 cfs of 12.03 cfs potential flow) 1=Orifice (Orifice Controls 0.33 cfs @ 9.62 fps) 2=Grate (Weir Controls 1.55 cfs @ 1.01 fps)
Pond 5P: BIORETENTION BASIN 1A Orifice
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Pond 5P: BIORETENTION BASIN 1A
Pond 5P: BIORETENTION BASIN 1A
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Pond 5P: BIORETENTION BASIN 1A
Stage-Area-Storage
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Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 5P: BIORETENTION BASIN 1A
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Primary (cfs)
0.000.00090.000.00
2.000.0412190.080.00
4.000.0544690.300.00
6.000.0686790.580.00
8.000.101,45190.970.00
10.000.182,06091.370.09
12.002.364,52893.020.23
14.000.447,52695.020.44
16.000.247,30094.870.32
18.000.176,57494.380.30
20.000.145,65293.770.27
22.000.134,80893.210.24
24.000.114,04492.700.21
26.000.002,85491.900.15
28.000.002,03191.350.08
30.000.001,67091.110.02
32.000.001,58691.060.01
34.000.001,55691.040.00
36.000.001,54191.030.00
38.000.001,53391.020.00
40.000.001,52791.020.00
42.000.001,52391.020.00
44.000.001,52091.010.00
46.000.001,51891.010.00
48.000.001,51691.010.00
50.000.001,51491.010.00
52.000.001,51391.010.00
54.000.001,51291.010.00
56.000.001,51191.010.00
58.000.001,51091.010.00
60.000.001,51091.010.00
62.000.001,50991.010.00
64.000.001,50991.010.00
66.000.001,50891.010.00
68.000.001,50891.010.00
70.000.001,50791.000.00
72.000.001,50791.000.00
Page 486 Download HTML
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 12/19/2025
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
YR-C Rainfall=9.48" Printed 12/19/2025 Page 319
Stage-Discharge for Pond 5P: BIORETENTION BASIN 1A
Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)
90.000.0092.600.20
90.050.0092.650.20
90.100.0092.700.21
90.150.0092.750.21
90.200.0092.800.21
90.250.0092.850.22
90.300.0092.900.22
90.350.0092.950.22
90.400.0093.000.23
90.450.0093.050.23
90.500.0093.100.23
90.550.0093.150.23
90.600.0093.200.24
90.650.0093.250.24
90.700.0093.300.24
90.750.0093.350.25
90.800.0093.400.25
90.850.0093.450.25
90.900.0093.500.25
90.950.0093.550.26
91.000.0093.600.26
91.050.0093.650.26
91.100.0293.700.26
91.150.0393.750.27
91.200.0593.800.27
91.250.0693.850.27
91.300.0793.900.27
91.350.0893.950.28
91.400.0994.000.28
91.450.1094.050.28
91.500.1094.100.28
91.550.1194.150.29
91.600.1294.200.29
91.650.1294.250.29
91.700.1394.300.29
91.750.1394.350.30
91.800.1494.400.30
91.850.1494.450.30
91.900.1594.500.30
91.950.1594.550.30
92.000.1694.600.31
92.050.1694.650.31
92.100.1694.700.31
92.150.1794.750.31
92.200.1794.800.32
92.250.1894.850.32
92.300.1894.900.32
92.350.1894.950.32
92.400.1995.000.32
92.450.1995.050.91
92.500.1995.101.98
92.550.2095.153.37
Elevation (feet)Primary (cfs)
95.205.01
95.256.87
95.308.93
95.3511.17
95.4012.28
95.4512.32
95.5012.36
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Area-Storage for Pond 5P: BIORETENTION BASIN 1A
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
90.001,5000
90.101,500150
90.201,500300
90.301,500450
90.401,500600
90.501,500750
90.601,500900
90.701,5001,050
90.801,5001,200
90.901,5001,350
91.001,5001,500
91.101,5001,650
91.201,5001,800
91.301,5001,950
91.401,5002,100
91.501,5002,250
91.601,5002,400
91.701,5002,550
91.801,5002,700
91.901,5002,850
92.001,5003,000
92.101,5003,150
92.201,5003,300
92.301,5003,450
92.401,5003,600
92.501,5003,750
92.601,5003,900
92.701,5004,050
92.801,5004,200
92.901,5004,350
93.001,5004,500
93.101,5004,650
93.201,5004,800
93.301,5004,950
93.401,5005,100
93.501,5005,250
93.601,5005,400
93.701,5005,550
93.801,5005,700
93.901,5005,850
94.001,5006,000
94.101,5006,150
94.201,5006,300
94.301,5006,450
94.401,5006,600
94.501,5006,750
94.601,5006,900
94.701,5007,050
94.801,5007,200
94.901,5007,350
95.001,5007,500
95.101,5007,650
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
95.201,5007,800
95.301,5007,950
95.401,5008,100
95.501,5008,250
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 6P: BIORENTION BASIN 2A
Inflow Area = 18,731 sf, 0.00% Impervious, Inflow Depth = 1.83" for 100 YR-C event Inflow = 0.49 cfs @ 12.19 hrs, Volume= 2,863 cf Outflow = 0.49 cfs @ 12.19 hrs, Volume= 2,817 cf, Atten= 0%, Lag= 0.0 min Primary = 0.49 cfs @ 12.19 hrs, Volume= 2,817 cf Routed to Pond 33P : INFILTRATION BASIN 2 Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 95.54' @ 12.19 hrs Surf.Area= 240 sf Storage= 178 cf Plug-Flow detention time= 22.1 min calculated for 2,817 cf (98% of inflow) Center-of-Mass det. time= 13.4 min ( 930.6 - 917.2 )
VolumeInvertAvail.StorageStorage Description
#194.30'307 cfCustom Stage Data (Prismatic)Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
94.306300
95.001487474
96.00319234307
DeviceRoutingInvertOutlet Devices
#1Device 394.80'2.5" Vert. Orifice C= 0.600Limited to weir flow at low heads
#2Device 395.50'48.0" x 48.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads
#3Primary91.80'12.0" Round Culvert L= 30.0' RCP, groove end projecting, Ke= 0.200 Inlet / Outlet Invert= 91.80' / 91.65' S= 0.0050 '/ Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 0.79 sf
Primary OutFlow Max=0.49 cfs @ 12.19 hrs HW=95.54' TW=93.01' (Dynamic Tailwater) 3=Culvert (Passes 0.49 cfs of 7.07 cfs potential flow) 1=Orifice (Orifice Controls 0.13 cfs @ 3.83 fps) 2=Grate (Weir Controls 0.36 cfs @ 0.62 fps)
Image
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Analysis - Proposed Conditions NOAA 24 Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 6P: BIORENTION BASIN 2A
Pond 6P: BIORENTION BASIN 2A
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Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 6P: BIORENTION BASIN 2A
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Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 6P: BIORENTION BASIN 2A
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Primary (cfs)
0.000.00094.300.00
2.000.00094.300.00
4.000.00094.300.00
6.000.00094.300.00
8.000.00094.300.00
10.000.00094.300.00
12.000.113794.710.00
14.000.0812495.290.10
16.000.057394.990.05
18.000.036794.950.04
20.000.036594.940.03
22.000.036394.930.03
24.000.026294.920.02
26.000.004894.810.00
28.000.004794.800.00
30.000.004794.800.00
32.000.004794.800.00
34.000.004794.800.00
36.000.004794.800.00
38.000.004794.800.00
40.000.004794.800.00
42.000.004794.800.00
44.000.004794.800.00
46.000.004794.800.00
48.000.004794.800.00
50.000.004794.800.00
52.000.004794.800.00
54.000.004794.800.00
56.000.004794.800.00
58.000.004794.800.00
60.000.004794.800.00
62.000.004794.800.00
64.000.004794.800.00
66.000.004794.800.00
68.000.004794.800.00
70.000.004794.800.00
72.000.004794.800.00
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Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 6P: BIORENTION BASIN 2A
Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)
94.300.0094.820.0095.340.11
94.310.0094.830.0095.350.11
94.320.0094.840.0095.360.11
94.330.0094.850.0095.370.11
94.340.0094.860.0195.380.11
94.350.0094.870.0195.390.11
94.360.0094.880.0195.400.12
94.370.0094.890.0195.410.12
94.380.0094.900.0295.420.12
94.390.0094.910.0295.430.12
94.400.0094.920.0295.440.12
94.410.0094.930.0395.450.12
94.420.0094.940.0395.460.12
94.430.0094.950.0395.470.12
94.440.0094.960.0495.480.12
94.450.0094.970.0495.490.13
94.460.0094.980.0595.500.13
94.470.0094.990.0595.510.18
94.480.0095.000.0595.520.28
94.490.0095.010.0595.530.40
94.500.0095.020.0695.540.55
94.510.0095.030.0695.550.72
94.520.0095.040.0695.560.90
94.530.0095.050.0695.571.10
94.540.0095.060.0695.581.32
94.550.0095.070.0795.591.55
94.560.0095.080.0795.601.79
94.570.0095.090.0795.612.05
94.580.0095.100.0795.622.31
94.590.0095.110.0795.632.59
94.600.0095.120.0895.642.88
94.610.0095.130.0895.653.18
94.620.0095.140.0895.663.49
94.630.0095.150.0895.673.81
94.640.0095.160.0895.684.14
94.650.0095.170.0895.694.48
94.660.0095.180.0995.704.83
94.670.0095.190.0995.715.18
94.680.0095.200.0995.725.55
94.690.0095.210.0995.735.92
94.700.0095.220.0995.746.30
94.710.0095.230.0995.756.69
94.720.0095.240.1095.767.09
94.730.0095.250.1095.777.49
94.740.0095.260.1095.787.88
94.750.0095.270.1095.797.89
94.760.0095.280.1095.807.90
94.770.0095.290.1095.817.92
94.780.0095.300.1095.827.93
94.790.0095.310.1095.837.94
94.800.0095.320.1195.847.95
94.810.0095.330.1195.857.97
Elevation (feet)Primary (cfs)
95.867.98
95.877.99
95.888.00
95.898.02
95.908.03
95.918.04
95.928.05
95.938.07
95.948.08
95.958.09
95.968.10
95.978.12
95.988.13
95.998.14
96.008.15
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Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Area-Storage for Pond 6P: BIORENTION BASIN 2A
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
94.3063095.34206134
94.3265195.36210138
94.3468395.38213142
94.3670495.40216147
94.3873595.42220151
94.4075795.44223156
94.4278895.46227160
94.44801095.48230165
94.46821295.50234169
94.48851395.52237174
94.50871595.54240179
94.52901795.56244184
94.54921995.58247188
94.56952095.60251193
94.58972295.62254198
94.60992495.64257204
94.621022695.66261209
94.641042895.68264214
94.661073195.70268219
94.681093395.72271225
94.701123595.74275230
94.721143795.76278236
94.741163995.78281241
94.761194295.80285247
94.781214495.82288253
94.801244795.84292258
94.821264995.86295264
94.841295295.88298270
94.861315495.90302276
94.881335795.92305282
94.901366095.94309289
94.921386295.96312295
94.941416595.98316301
94.961436896.00319307
94.9814671
95.0014874
95.0215177
95.0415580
95.0615883
95.0816286
95.1016590
95.1216993
95.1417296
95.16175100
95.18179103
95.20182107
95.22186111
95.24189114
95.26192118
95.28196122
95.30199126
95.32203130
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Analysis - Proposed Conditions NOAA 24-hr D 100 YR-C Rainfall=9.48" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 327
Summary for Pond 8P: INFILTRATION BASIN 3
Inflow Area =38,333 sf,22.73% Impervious,Inflow Depth = 3.49" for 100 YR-C event
Inflow =1.59 cfs @12.15 hrs,11,133 cf
Outflow =0.34 cfs @13.49 hrs,11,133 cf,Atten= 79%, Lag= 80.4 min
Discarded =0.27 cfs @11.94 hrs,10,720 cf
Primary =0.07 cfs @13.49 hrs,413 cf
Routed to Link 34L : POA 3
Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 93.06' @ 13.49 hrs Surf.Area= 1,150 sf Storage= 2,655 cf
Plug-Flow detention time=77.2 min calculated for 11,133 cf (100% of inflow) Center-of-Mass det. time=77.2 min (944.1 - 866.9)
VolumeInvertAvail.StorageStorage Description
#190.75'4,888 cfCustom Stage Data (Prismatic)Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
90.75 95.001,150 1,1500 4,8880 4,888
DeviceRoutingInvertOutlet Devices
#1Device 392.75'2.5" Vert. Orifice C= 0.600 Limited to weir flow at low heads
#2Device 394.50'48.0" x 48.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads
#3Primary92.75'12.0" Round Culvert L= 7.0' RCP, groove end projecting, Ke= 0.200 Inlet / Outlet Invert= 92.75' / 92.65' S= 0.0143 ' / Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 0.79 sf
#4Discarded90.75'10.000 in/hr Exfiltration over Surface area Phase-In= 0.01'
Discarded OutFlow Max=0.27 cfs @ 11.94 hrs HW=90.80' (Free Discharge) 4=Exfiltration (Exfiltration Controls 0.27 cfs)
Primary OutFlow Max=0.07 cfs @ 13.49 hrs HW=93.06' TW=0.00' (Dynamic Tailwater) 3=Culvert (Passes 0.07 cfs of 0.37 cfs potential flow) 1=Orifice (Orifice Controls 0.07 cfs @ 2.18 fps) 2=Grate ( Controls 0.00 cfs)
Pond 8P: INFILTRATION BASIN 3 Grate
Cuffieat
Exfiltration
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Pond 8P: INFILTRATION BASIN 3
Pond 8P: INFILTRATION BASIN 3
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Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
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Pond 8P: INFILTRATION BASIN 3
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Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 8P: INFILTRATION BASIN 3
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Outflow (cfs)Discarded (cfs)Primary (cfs)
0.000.00090.750.000.000.00
2.000.00090.750.000.000.00
4.000.02190.750.020.020.00
6.000.03190.750.030.030.00
8.000.04290.750.040.040.00
10.000.06390.750.060.060.00
12.000.7613790.870.270.270.00
14.000.272,59493.010.330.270.06
16.000.192,17192.640.270.270.00
18.000.121,38691.960.270.270.00
20.000.0818090.910.270.270.00
22.000.07390.750.070.070.00
24.000.06390.750.060.060.00
26.000.01090.750.010.010.00
28.000.00090.750.000.000.00
30.000.00090.750.000.000.00
32.000.00090.750.000.000.00
34.000.00090.750.000.000.00
36.000.00090.750.000.000.00
38.000.00090.750.000.000.00
40.000.00090.750.000.000.00
42.000.00090.750.000.000.00
44.000.00090.750.000.000.00
46.000.00090.750.000.000.00
48.000.00090.750.000.000.00
50.000.00090.750.000.000.00
52.000.00090.750.000.000.00
54.000.00090.750.000.000.00
56.000.00090.750.000.000.00
58.000.00090.750.000.000.00
60.000.00090.750.000.000.00
62.000.00090.750.000.000.00
64.000.00090.750.000.000.00
66.000.00090.750.000.000.00
68.000.00090.750.000.000.00
70.000.00090.750.000.000.00
72.000.00090.750.000.000.00
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Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 8P: INFILTRATION BASIN 3
Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)
90.750.000.000.0093.350.380.270.12
90.800.270.270.0093.400.390.270.12
90.850.270.270.0093.450.390.270.13
90.900.270.270.0093.500.400.270.13
90.950.270.270.0093.550.400.270.14
91.000.270.270.0093.600.410.270.14
91.050.270.270.0093.650.410.270.15
91.100.270.270.0093.700.420.270.15
91.150.270.270.0093.750.420.270.16
91.200.270.270.0093.800.430.270.16
91.250.270.270.0093.850.430.270.16
91.300.270.270.0093.900.430.270.17
91.350.270.270.0093.950.440.270.17
91.400.270.270.0094.000.440.270.18
91.450.270.270.0094.050.450.270.18
91.500.270.270.0094.100.450.270.18
91.550.270.270.0094.150.450.270.19
91.600.270.270.0094.200.460.270.19
91.650.270.270.0094.250.460.270.19
91.700.270.270.0094.300.460.270.20
91.750.270.270.0094.350.470.270.20
91.800.270.270.0094.400.470.270.20
91.850.270.270.0094.450.470.270.21
91.900.270.270.0094.500.480.270.21
91.950.270.270.0094.551.060.270.80
92.000.270.270.0094.602.140.271.87
92.050.270.270.0094.653.530.273.26
92.100.270.270.0094.705.170.274.90
92.150.270.270.0094.755.880.275.61
92.200.270.270.0094.806.000.275.74
92.250.270.270.0094.856.130.275.86
92.300.270.270.0094.906.250.275.98
92.350.270.270.0094.956.370.276.10
92.400.270.270.0095.006.480.276.22
92.450.270.270.00
92.500.270.270.00
92.550.270.270.00
92.600.270.270.00
92.650.270.270.00
92.700.270.270.00
92.750.270.270.00
92.800.270.270.00
92.850.280.270.02
92.900.300.270.03
92.950.320.270.05
93.000.330.270.06
93.050.340.270.07
93.100.350.270.08
93.150.360.270.09
93.200.360.270.10
93.250.370.270.10
93.300.380.270.11
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Analysis - Proposed Conditions NOAA 24-hr D 100 YR-C Rainfall=9.48" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 332
Stage-Area-Storage for Pond 8P: INFILTRATION BASIN 3
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
90.751,150093.351,1502,990
90.801,1505793.401,1503,048
90.851,15011593.451,1503,105
90.901,15017393.501,1503,163
90.951,15023093.551,1503,220
91.001,15028893.601,1503,277
91.051,15034593.651,1503,335
91.101,15040293.701,1503,393
91.151,15046093.751,1503,450
91.201,15051893.801,1503,507
91.251,15057593.851,1503,565
91.301,15063293.901,1503,623
91.351,15069093.951,1503,680
91.401,15074894.001,1503,738
91.451,15080594.051,1503,795
91.501,15086394.101,1503,852
91.551,15092094.151,1503,910
91.601,15097794.201,1503,968
91.651,1501,03594.251,1504,025
91.701,1501,09394.301,1504,082
91.751,1501,15094.351,1504,140
91.801,1501,20794.401,1504,198
91.851,1501,26594.451,1504,255
91.901,1501,32394.501,1504,313
91.951,1501,38094.551,1504,370
92.001,1501,43894.601,1504,427
92.051,1501,49594.651,1504,485
92.101,1501,55294.701,1504,543
92.151,1501,61094.751,1504,600
92.201,1501,66894.801,1504,657
92.251,1501,72594.851,1504,715
92.301,1501,78294.901,1504,773
92.351,1501,84094.951,1504,830
92.401,1501,89895.001,1504,888
92.451,1501,955
92.501,1502,013
92.551,1502,070
92.601,1502,127
92.651,1502,185
92.701,1502,243
92.751,1502,300
92.801,1502,357
92.851,1502,415
92.901,1502,473
92.951,1502,530
93.001,1502,588
93.051,1502,645
93.101,1502,702
93.151,1502,760
93.201,1502,818
93.251,1502,875
93.301,1502,932
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Analysis - Proposed Conditions NOAA 24-hr D 100 YR-C Rainfall=9.48" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 333
Summary for Pond 10P: PERVIOUS PAVEMENT 2B
Intflow Area = 8,276 sf,100.00% Impervious, Inflow Depth = 9.24" for 100 YR-C event Inflow = 1.57 cfs @ 12.12 hrs, Volume= 6,372 cf Outflow = 1.44 cfs @ 12.15 hrs, Volume= 6,368 cf, Atten= 8%, Lag= 1.6 min Primary = 1.44 cfs @ 12.15 hrs, Volume= 6,368 cf Routed to Pond 33P : INFILTRATION BASIN 2 Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 94.88' @ 12.15 hrs Surf.Area= 9,225 sf Storage= 1,105 cf Plug-Flow detention time= 72.2 min calculated for 6,367 cf (100% of inflow) Center-of-Mass det. time= 72.1 min ( 813.0 - 741.0 )
VolumeInvertAvail.StorageStorage Description
#193.80'615 cfStone Storage Bed (Prismatic)Listed below (Recalc)1,538 cf Overall ร— 40.0% Voids
#294.30'231 cfSurface and Base Course (Prismatic)Listed below (Recalc)1,538 cf Overall ร— 15.0% Voids
#394.80'1,538 cfSurface (Prismatic)Listed below (Recalc)
2,383 cfTotal Available Storage
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
93.803,07500
94.303,0751,5381,538
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
94.303,07500
94.803,0751,5381,538
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
94.803,07500
95.303,0751,5381,538
DeviceRoutingInvertOutlet Devices
#1Device 393.80'2.5" Vert. Orifice C = 0.600
#2Device 394.80'48.0" x 48.0" Horiz. Grate C = 0.600
#3Primary92.08'12.0" Round Culvert L = 38.0' RCP, groove end projecting, Ke = 0.200Inlet / Outlet Invert= $ 92.08'/91.65' $ S = 0.0113'/' Cc = 0.900n=0.011, Flow Area=0.79 sf
Primary OutFlow Max=1.44 cfs @ 12.15 hrs HW=94.88' TW=92.80' (Dynamic Tailwater) 3=Culvert (Passes 1.44 cfs of 6.34 cfs potential flow) 1=Orifice (Orifice Controls 0.16 cfs @ 4.77 fps) 2=Grate (Weir Controls 1.28 cfs @ 0.95 fps)
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Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 10P: PERVIOUS PAVEMENT 2B
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NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 12/19/2025 tions LLC Page 335
Analysis - Proposed Conditions NOAA 24- Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 10P: PERVIOUS PAVEMENT 2B
Pond 10P: PERVIOUS PAVEMENT 2B
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Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LL
Hydrograph for Pond 10P: PERVIOUS PAVEMENT 2B
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Primary (cfs)
0.000.00093.800.00
2.000.025093.840.00
4.000.0212693.900.02
6.000.0315993.930.03
8.000.0520093.960.04
10.000.0828594.030.06
12.000.9098894.850.68
14.000.0978794.670.13
16.000.0547994.190.09
18.000.0326594.020.05
20.000.0317993.950.03
22.000.0215693.930.03
24.000.0214193.910.02
26.000.006593.850.01
28.000.004193.830.00
30.000.002993.820.00
32.000.002393.820.00
34.000.001993.820.00
36.000.001693.810.00
38.000.001493.810.00
40.000.001293.810.00
42.000.001193.810.00
44.000.001093.810.00
46.000.00993.810.00
48.000.00893.810.00
50.000.00893.810.00
52.000.00793.810.00
54.000.00793.810.00
56.000.00693.810.00
58.000.00693.800.00
60.000.00693.800.00
62.000.00593.800.00
64.000.00593.800.00
66.000.00593.800.00
68.000.00593.800.00
70.000.00493.800.00
72.000.00493.800.00
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Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 10P: PERVIOUS PAVEMENT 2B
Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)
93.800.0094.320.1194.840.58
93.810.0094.330.1194.850.74
93.820.0094.340.1194.860.93
93.830.0094.350.1194.871.13
93.840.0094.360.1194.881.35
93.850.0094.370.1194.891.58
93.860.0194.380.1194.901.82
93.870.0194.390.1194.912.07
93.880.0194.400.1294.922.34
93.890.0194.410.1294.932.62
93.900.0294.420.1294.942.91
93.910.0294.430.1294.953.21
93.920.0294.440.1294.963.52
93.930.0394.450.1294.973.84
93.940.0394.460.1294.984.17
93.950.0394.470.1294.994.50
93.960.0494.480.1295.004.85
93.970.0494.490.1395.015.21
93.980.0594.500.1395.025.57
93.990.0594.510.1395.035.95
94.000.0594.520.1395.046.33
94.010.0594.530.1395.056.72
94.020.0694.540.1395.066.83
94.030.0694.550.1395.076.84
94.040.0694.560.1395.086.86
94.050.0694.570.1395.096.87
94.060.0694.580.1395.106.88
94.070.0794.590.1495.116.90
94.080.0794.600.1495.126.91
94.090.0794.610.1495.136.93
94.100.0794.620.1495.146.94
94.110.0794.630.1495.156.95
94.120.0894.640.1495.166.97
94.130.0894.650.1495.176.98
94.140.0894.660.1495.186.99
94.150.0894.670.1495.197.01
94.160.0894.680.1495.207.02
94.170.0894.690.1595.217.04
94.180.0994.700.1595.227.05
94.190.0994.710.1595.237.06
94.200.0994.720.1595.247.08
94.210.0994.730.1595.257.09
94.220.0994.740.1595.267.10
94.230.0994.750.1595.277.12
94.240.1094.760.1595.287.13
94.250.1094.770.1595.297.15
94.260.1094.780.1595.307.16
94.270.1094.790.15
94.280.1094.800.16
94.290.1094.810.21
94.300.1094.820.31
94.310.1094.830.43
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NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 12/19/2025
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Printed 12/19/2025 Page 338
Stage-Area-Storage for Pond 10P: PERVIOUS PAVEMENT 2B
Elevation (feet)Storage (cubic-feet)Elevation (feet)Storage (cubic-feet)Elevation (feet)Storage (cubic-feet)
93.80094.3262494.84969
93.811294.3362994.85999
93.822594.3463394.861,030
93.833794.3563894.871,061
93.844994.3664394.881,092
93.856194.3764794.891,122
93.867494.3865294.901,153
93.878694.3965794.911,184
93.889894.4066194.921,215
93.8911194.4166694.931,245
93.9012394.4267094.941,276
93.9113594.4367594.951,307
93.9214894.4468094.961,338
93.9316094.4568494.971,368
93.9417294.4668994.981,399
93.9518594.4769394.991,430
93.9619794.4869895.001,461
93.9720994.4970395.011,491
93.9822194.5070795.021,522
93.9923494.5171295.031,553
94.0024694.5271695.041,584
94.0125894.5372195.051,614
94.0227194.5472695.061,645
94.0328394.5573095.071,676
94.0429594.5673595.081,707
94.0530894.5774095.091,737
94.0632094.5874495.101,768
94.0733294.5974995.111,799
94.0834494.6075395.121,830
94.0935794.6175895.131,860
94.1036994.6276395.141,891
94.1138194.6376795.151,922
94.1239494.6477295.161,953
94.1340694.6577695.171,983
94.1441894.6678195.182,014
94.1543094.6778695.192,045
94.1644394.6879095.202,076
94.1745594.6979595.212,106
94.1846794.7080095.222,137
94.1948094.7180495.232,168
94.2049294.7280995.242,199
94.2150494.7381395.252,229
94.2251794.7481895.262,260
94.2352994.7582395.272,291
94.2454194.7682795.282,322
94.2555494.7783295.292,352
94.2656694.7883695.302,383
94.2757894.79841
94.2859094.80846
94.2960394.81876
94.3061594.82907
94.3162094.83938
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 15P: PERVIOUS PAVEMENT 3B
Intflow Area = 8,712 sf,100.00% Impervious, Inflow Depth = 9.24" for 100 YR-C event Inflow = 1.65 cfs @ 12.12 hrs, Volume= 6,708 cf Outflow = 1.53 cfs @ 12.15 hrs, Volume= 6,704 cf, Atten= 7%, Lag= 1.5 min Primary = 1.53 cfs @ 12.15 hrs, Volume= 6,704 cf Routed to Pond 8P : INFILTRATION BASIN 3 Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 94.89' @ 12.15 hrs Surf.Area= 8,889 sf Storage= 1,076 cf Plug-Flow detention time= 66.6 min calculated for 6,703 cf (100% of inflow) Center-of-Mass det. time= 66.5 min ( 807.5 - 741.0 )
VolumeInvertAvail.StorageStorage Description
#193.80'593 cfStone Storage Bed (Prismatic)Listed below (Recalc) 1,482 cf Overall ร— 40.0% Voids
#294.30'222 cfSurface and Base Course (Prismatic)Listed below (Recalc) 1,482 cf Overall ร— 15.0% Voids
#394.80'1,482 cfSurface (Prismatic)Listed below (Recalc)
2,296 cfTotal Available Storage
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
93.802,96300
94.302,9631,4821,482
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
94.302,96300
94.802,9631,4821,482
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
94.802,96300
95.302,9631,4821,482
DeviceRoutingInvertOutlet Devices
#1Device 393.80'2.5" Vert. Orifice C = 0.600
#2Device 394.80'48.0" x 48.0" Horiz. Grate C = 0.600
#3Primary92.00'12.0" Round Culvert L = 52.0' RCP, groove end projecting, Ke = 0.200Inlet / Outlet Invert= $ 92.00'/90.75' $ S = 0.0240'/' Cc = 0.900n=0.011, Flow Area=0.79 sf
Primary OutFlow Max=1.53 cfs @ 12.15 hrs HW=94.89' TW=91.28' (Dynamic Tailwater) 3=Culvert (Passes 1.53 cfs of 7.25 cfs potential flow) 1=Orifice (Orifice Controls 0.16 cfs @ 4.78 fps) 2=Grate (Weir Controls 1.37 cfs @ 0.97 fps)
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NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 12/19/2025 tions LLC Page 340
Analysis - Proposed Conditions NOAA 24 Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 15P: PERVIOUS PAVEMENT 3B
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NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 12/19/2025 tions LLC Page 341
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 15P: PERVIOUS PAVEMENT 3B
Pond 15P: PERVIOUS PAVEMENT 3B
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Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LL
Hydrograph for Pond 15P: PERVIOUS PAVEMENT 3B
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Primary (cfs)
0.000.00093.800.00
2.000.025393.840.00
4.000.0312793.910.02
6.000.0315893.930.03
8.000.0520093.970.04
10.000.0929094.040.06
12.000.9596594.850.76
14.000.0973094.610.14
16.000.0544894.180.09
18.000.0325594.020.05
20.000.0317693.950.03
22.000.0315493.930.03
24.000.0213993.920.02
26.000.006293.850.01
28.000.003893.830.00
30.000.002893.820.00
32.000.002293.820.00
34.000.001893.810.00
36.000.001593.810.00
38.000.001393.810.00
40.000.001193.810.00
42.000.001093.810.00
44.000.00993.810.00
46.000.00893.810.00
48.000.00893.810.00
50.000.00793.810.00
52.000.00793.810.00
54.000.00693.810.00
56.000.00693.800.00
58.000.00593.800.00
60.000.00593.800.00
62.000.00593.800.00
64.000.00593.800.00
66.000.00493.800.00
68.000.00493.800.00
70.000.00493.800.00
72.000.00493.800.00
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Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 15P: PERVIOUS PAVEMENT 3B
Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)
93.800.0094.320.1194.840.58
93.810.0094.330.1194.850.74
93.820.0094.340.1194.860.93
93.830.0094.350.1194.871.13
93.840.0094.360.1194.881.35
93.850.0094.370.1194.891.58
93.860.0194.380.1194.901.82
93.870.0194.390.1194.912.07
93.880.0194.400.1294.922.34
93.890.0194.410.1294.932.62
93.900.0294.420.1294.942.91
93.910.0294.430.1294.953.21
93.920.0294.440.1294.963.52
93.930.0394.450.1294.973.84
93.940.0394.460.1294.984.17
93.950.0394.470.1294.994.50
93.960.0494.480.1295.004.85
93.970.0494.490.1395.015.21
93.980.0594.500.1395.025.57
93.990.0594.510.1395.035.95
94.000.0594.520.1395.046.33
94.010.0594.530.1395.056.72
94.020.0694.540.1395.067.11
94.030.0694.550.1395.077.46
94.040.0694.560.1395.087.47
94.050.0694.570.1395.097.48
94.060.0694.580.1395.107.50
94.070.0794.590.1495.117.51
94.080.0794.600.1495.127.52
94.090.0794.610.1495.137.53
94.100.0794.620.1495.147.54
94.110.0794.630.1495.157.55
94.120.0894.640.1495.167.56
94.130.0894.650.1495.177.57
94.140.0894.660.1495.187.58
94.150.0894.670.1495.197.60
94.160.0894.680.1495.207.61
94.170.0894.690.1595.217.62
94.180.0994.700.1595.227.63
94.190.0994.710.1595.237.64
94.200.0994.720.1595.247.65
94.210.0994.730.1595.257.66
94.220.0994.740.1595.267.67
94.230.0994.750.1595.277.68
94.240.1094.760.1595.287.69
94.250.1094.770.1595.297.70
94.260.1094.780.1595.307.72
94.270.1094.790.15
94.280.1094.800.16
94.290.1094.810.21
94.300.1094.820.31
94.310.1094.830.43
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NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 12/19/2025
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Printed 12/19/2025 Page 344
Stage-Area-Storage for Pond 15P: PERVIOUS PAVEMENT 3B
Elevation (feet)Storage (cubic-feet)Elevation (feet)Storage (cubic-feet)Elevation (feet)Storage (cubic-feet)
93.80094.3260194.84933
93.811294.3360694.85963
93.822494.3461094.86993
93.833694.3561594.871,022
93.844794.3661994.881,052
93.855994.3762494.891,081
93.867194.3862894.901,111
93.878394.3963394.911,141
93.889594.4063794.921,170
93.8910794.4164194.931,200
93.9011994.4264694.941,230
93.9113094.4365094.951,259
93.9214294.4465594.961,289
93.9315494.4565994.971,319
93.9416694.4666494.981,348
93.9517894.4766894.991,378
93.9619094.4867395.001,407
93.9720194.4967795.011,437
93.9821394.5068195.021,467
93.9922594.5168695.031,496
94.0023794.5269095.041,526
94.0124994.5369595.051,556
94.0226194.5469995.061,585
94.0327394.5570495.071,615
94.0428494.5670895.081,644
94.0529694.5771395.091,674
94.0630894.5871795.101,704
94.0732094.5972195.111,733
94.0833294.6072695.121,763
94.0934494.6173095.131,793
94.1035694.6273595.141,822
94.1136794.6373995.151,852
94.1237994.6474495.161,882
94.1339194.6574895.171,911
94.1440394.6675395.181,941
94.1541594.6775795.191,970
94.1642794.6876195.202,000
94.1743994.6976695.212,030
94.1845094.7077095.222,059
94.1946294.7177595.232,089
94.2047494.7277995.242,119
94.2148694.7378495.252,148
94.2249894.7478895.262,178
94.2351094.7579395.272,207
94.2452194.7679795.282,237
94.2553394.7780195.292,267
94.2654594.7880695.302,296
94.2755794.79810
94.2856994.80815
94.2958194.81844
94.3059394.82874
94.3159794.83904
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Analysis - Proposed Conditions NOAA 24-hr D 100 YR-C Rainfall=9.48" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 345
Summary for Pond 33P: INFILTRATION BASIN 2
Inflow Area =27,007 sf,30.65% Impervious,Inflow Depth = 4.08" for 100 YR-C event
Inflow =1.85 cfs @12.18 hrs,Volume= 9,185 cf
Outflow =0.29 cfs @13.23 hrs,Volume= 9,185 cf,Atten= 84%, Lag= 62.8 min
Discarded =0.20 cfs @13.23 hrs,Volume= 8,204 cf
Primary =0.10 cfs @13.23 hrs,Volume= 981 cf
Routed to Link 33L : POA 2
Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 94.12' @ 13.23 hrs Surf.Area= 1,704 sf Storage= 2,640 cf
Plug-Flow detention time= 125.5 min calculated for 9,185 cf (100% of inflow) Center-of-Mass det. time= 125.5 min ( 974.6 - 849.1 )
VolumeInvertAvail.StorageStorage Description
#191.65'4,378 cfCustom Stage Data (Prismatic)Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
91.6552000
92.00651205205
93.001,0948731,077
94.001,6291,3622,439
95.002,2491,9394,378
DeviceRoutingInvertOutlet Devices
#1Device 393.65'2.5" Vert. Orifice C= 0.600 Limited to weir flow at low heads
#2Device 394.70'48.0" x 48.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads
#3Primary93.65'12.0" Round Culvert L= 17.0' RCP, groove end projecting, Ke= 0.200 Inlet / Outlet Invert= 93.65' / 93.50' S= 0.0088 '/ Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 0.79 sf
#4Discarded91.65'4.950 in/hr Exfiltration over Surface area Phase-In= 0.01'
Discarded OutFlow Max=0.20 cfs @ 13.23 hrs HW=94.12' (Free Discharge) 4=Exfiltration (Exfiltration Controls 0.20 cfs)
Primary OutFlow Max=0.10 cfs @ 13.23 hrs HW=94.12' TW=0.00' (Dynamic Tailwater) 3=Culvert (Passes 0.10 cfs of 0.76 cfs potential flow) 1=Orifice (Orifice Controls 0.10 cfs @ 2.92 fps) 2=Grate ( Controls 0.00 cfs)
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Pond 33P: INFILTRATION BASIN 2
Pond 33P: INFILTRATION BASIN 2
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Pond 33P: INFILTRATION BASIN 2
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NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 12/19/2025
0 YR-C Rainfall=9.48" Printed 12/19/2025 Page 348
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 33P: INFILTRATION BASIN 2
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Outflow (cfs)Discarded (cfs)Primary (cfs)
0.000.00091.650.000.000.00
2.000.00091.650.000.000.00
4.000.02291.650.020.020.00
6.000.03291.650.030.030.00
8.000.04391.660.040.040.00
10.000.06591.660.060.060.00
12.000.6831792.160.080.080.00
14.000.232,54694.070.280.190.09
16.000.142,05993.760.190.170.02
18.000.091,67593.490.160.160.00
20.000.061,17693.090.130.130.00
22.000.0573492.660.110.110.00
24.000.0438392.250.090.090.00
26.000.01091.650.010.010.00
28.000.00091.650.000.000.00
30.000.00091.650.000.000.00
32.000.00091.650.000.000.00
34.000.00091.650.000.000.00
36.000.00091.650.000.000.00
38.000.00091.650.000.000.00
40.000.00091.650.000.000.00
42.000.00091.650.000.000.00
44.000.00091.650.000.000.00
46.000.00091.650.000.000.00
48.000.00091.650.000.000.00
50.000.00091.650.000.000.00
52.000.00091.650.000.000.00
54.000.00091.650.000.000.00
56.000.00091.650.000.000.00
58.000.00091.650.000.000.00
60.000.00091.650.000.000.00
62.000.00091.650.000.000.00
64.000.00091.650.000.000.00
66.000.00091.650.000.000.00
68.000.00091.650.000.000.00
70.000.00091.650.000.000.00
72.000.00091.650.000.000.00
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Page 349
Stage-Discharge for Pond 33P: INFILTRATION BASIN 2
Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)
91.650.000.000.0094.250.320.200.12
91.700.060.060.0094.300.330.210.12
91.750.060.060.0094.350.340.210.13
91.800.070.070.0094.400.350.220.13
91.850.070.070.0094.450.360.220.14
91.900.070.070.0094.500.360.220.14
91.950.070.070.0094.550.370.230.15
92.000.070.070.0094.600.380.230.15
92.050.080.080.0094.650.390.230.16
92.100.080.080.0094.700.400.240.16
92.150.080.080.0094.750.990.240.75
92.200.080.080.0094.802.070.241.82
92.250.090.090.0094.853.460.253.21
92.300.090.090.0094.903.580.253.33
92.350.090.090.0094.953.670.253.41
92.400.090.090.0095.003.720.263.46
92.450.100.100.00
92.500.100.100.00
92.550.100.100.00
92.600.110.110.00
92.650.110.110.00
92.700.110.110.00
92.750.110.110.00
92.800.120.120.00
92.850.120.120.00
92.900.120.120.00
92.950.120.120.00
93.000.130.130.00
93.050.130.130.00
93.100.130.130.00
93.150.130.130.00
93.200.140.140.00
93.250.140.140.00
93.300.140.140.00
93.350.150.150.00
93.400.150.150.00
93.450.150.150.00
93.500.160.160.00
93.550.160.160.00
93.600.160.160.00
93.650.170.170.00
93.700.170.170.00
93.750.190.170.02
93.800.210.170.03
93.850.230.180.05
93.900.240.180.06
93.950.260.180.07
94.000.270.190.08
94.050.280.190.09
94.100.290.190.10
94.150.300.200.10
94.200.310.200.11
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Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Area-Storage for Pond 33P: INFILTRATION BASIN 2
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
91.655200
91.7053926
91.7555754
91.8057682
91.85595111
91.90614142
91.95632173
92.00651205
92.05673238
92.10695272
92.15717308
92.20740344
92.25762382
92.30784420
92.35806460
92.40828501
92.45850543
92.50873586
92.55895630
92.60917675
92.65939722
92.70961769
92.75983818
92.801,005867
92.851,028918
92.901,050970
92.951,0721,023
93.001,0941,077
93.051,1211,133
93.101,1481,190
93.151,1741,248
93.201,2011,307
93.251,2281,368
93.301,2551,430
93.351,2811,493
93.401,3081,558
93.451,3351,624
93.501,3621,691
93.551,3881,760
93.601,4151,830
93.651,4421,902
93.701,4691,974
93.751,4952,048
93.801,5222,124
93.851,5492,201
93.901,5762,279
93.951,6022,358
94.001,6292,439
94.051,6602,521
94.101,6912,605
94.151,7222,690
94.201,7532,777
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
94.251,7842,866
94.301,8152,956
94.351,8463,047
94.401,8773,140
94.451,9083,235
94.501,9393,331
94.551,9703,429
94.602,0013,528
94.652,0323,629
94.702,0633,731
94.752,0943,835
94.802,1253,941
94.852,1564,048
94.902,1874,156
94.952,2184,266
95.002,2494,378
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Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 42P: BIORENTION BASIN 3A
Inflow Area = 29,621 sf, 0.00% Impervious, Inflow Depth = 1.83" for 100 YR-C event Inflow = 0.66 cfs @ 12.24 hrs, Volume = 4,528 cf Outflow = 0.60 cfs @ 12.38 hrs, Volume = 4,429 cf, Atten = 10%, Lag = 8.4 min Primary = 0.60 cfs @ 12.38 hrs, Volume = 4,429 cf Routed to Pond 8P : INFILTRATION BASIN 3
Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 94.54' @ 12.38 hrs Surf.Area= 907 sf Storage= 532 cf Plug-Flow detention time= 46.6 min calculated for 4,428 cf (98% of inflow) Center-of-Mass det. time= 35.2 min ( 956.8 - 921.5 )
VolumeInvertAvail.StorageStorage Description
#193.30'1,041 cfCustom Stage Data (Prismatic)Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
93.307700
94.00417173173
95.001,3198681,041
DeviceRoutingInvertOutlet Devices
#1Device 393.80'2.5" Vert. Orifice C= 0.600 Limited to weir flow at low heads
#2Device 394.50'48.0" x 48.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads
#3Primary90.80'12.0" Round Culvert L= 11.0' RCP, groove end projecting, Ke= 0.200 Inlet / Outlet Invert= 90.80' / 90.75' S= 0.0045 ' /' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 0.79 sf
Primary OutFlow Max=0.60 cfs @ 12.38 hrs HW=94.54' TW=92.01' (Dynamic Tailwater) 3=Culvert (Passes 0.60 cfs of 7.52 cfs potential flow) 1=Orifice (Orifice Controls 0.13 cfs @ 3.85 fps) 2=Grate (Weir Controls 0.47 cfs @ 0.68 fps)
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Pond 42P: BIORENTION BASIN 3A
Pond 42P: BIORENTION BASIN 3A
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Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 42P: BIORENTION BASIN 3A
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Hydrograph for Pond 42P: BIORENTION BASIN 3A
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Primary (cfs)
0.000.00093.300.00
2.000.00093.300.00
4.000.00093.300.00
6.000.00093.300.00
8.000.00093.300.00
10.000.00093.300.00
12.000.123993.570.00
14.000.1349794.500.14
16.000.0835194.320.11
18.000.0620894.080.07
20.000.0517093.990.05
22.000.0416293.970.04
24.000.0415593.960.04
26.000.0010893.830.00
28.000.0010393.810.00
30.000.0010293.810.00
32.000.0010193.810.00
34.000.0010193.800.00
36.000.0010093.800.00
38.000.0010093.800.00
40.000.0010093.800.00
42.000.0010093.800.00
44.000.0010093.800.00
46.000.0010093.800.00
48.000.0010093.800.00
50.000.0010093.800.00
52.000.0010093.800.00
54.000.0010093.800.00
56.000.0010093.800.00
58.000.0010093.800.00
60.000.0010093.800.00
62.000.0010093.800.00
64.000.0010093.800.00
66.000.0010093.800.00
68.000.0010093.800.00
70.000.0010093.800.00
72.000.0010093.800.00
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Stage-Discharge for Pond 42P: BIORENTION BASIN 3A
Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)
93.300.0093.820.0094.340.11
93.310.0093.830.0094.350.11
93.320.0093.840.0094.360.11
93.330.0093.850.0094.370.11
93.340.0093.860.0194.380.11
93.350.0093.870.0194.390.11
93.360.0093.880.0194.400.12
93.370.0093.890.0194.410.12
93.380.0093.900.0294.420.12
93.390.0093.910.0294.430.12
93.400.0093.920.0294.440.12
93.410.0093.930.0394.450.12
93.420.0093.940.0394.460.12
93.430.0093.950.0394.470.12
93.440.0093.960.0494.480.12
93.450.0093.970.0494.490.13
93.460.0093.980.0594.500.13
93.470.0093.990.0594.510.18
93.480.0094.000.0594.520.28
93.490.0094.010.0594.530.40
93.500.0094.020.0694.540.55
93.510.0094.030.0694.550.72
93.520.0094.040.0694.560.90
93.530.0094.050.0694.571.10
93.540.0094.060.0694.581.32
93.550.0094.070.0794.591.55
93.560.0094.080.0794.601.79
93.570.0094.090.0794.612.05
93.580.0094.100.0794.622.31
93.590.0094.110.0794.632.59
93.600.0094.120.0894.642.88
93.610.0094.130.0894.653.18
93.620.0094.140.0894.663.49
93.630.0094.150.0894.673.81
93.640.0094.160.0894.684.14
93.650.0094.170.0894.694.48
93.660.0094.180.0994.704.83
93.670.0094.190.0994.715.18
93.680.0094.200.0994.725.55
93.690.0094.210.0994.735.92
93.700.0094.220.0994.746.30
93.710.0094.230.0994.756.69
93.720.0094.240.1094.767.09
93.730.0094.250.1094.777.49
93.740.0094.260.1094.787.91
93.750.0094.270.1094.798.33
93.760.0094.280.1094.808.75
93.770.0094.290.1094.818.86
93.780.0094.300.1094.828.87
93.790.0094.310.1094.838.88
93.800.0094.320.1194.848.89
93.810.0094.330.1194.858.91
Elevation (feet)Primary (cfs)
94.868.92
94.878.93
94.888.94
94.898.96
94.908.97
94.918.98
94.928.99
94.939.01
94.949.02
94.959.03
94.969.04
94.979.06
94.989.07
94.999.08
95.009.09
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Area-Storage for Pond 42P: BIORENTION BASIN 3A
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
93.3077094.34724367
93.3287294.36742381
93.3496394.38760396
93.36106594.40778412
93.38116894.42796428
93.401261094.44814444
93.421351394.46832460
93.441451694.48850477
93.461551994.50868494
93.481642294.52886512
93.501742594.54904530
93.521842994.56922548
93.541943294.58940566
93.562033694.60958585
93.582134194.62976605
93.602234594.64994625
93.622325094.661,012645
93.642425494.681,030665
93.662525994.701,048686
93.682626494.721,066707
93.702717094.741,084728
93.722817594.761,103750
93.742918194.781,121773
93.763008794.801,139795
93.783109394.821,157818
93.803209994.841,175841
93.8233010694.861,193865
93.8433911294.881,211889
93.8634911994.901,229914
93.8835912694.921,247938
93.9036813494.941,265963
93.9237814194.961,283989
93.9438814994.981,3011,015
93.9639815795.001,3191,041
93.98407165
94.00417173
94.02435181
94.04453190
94.06471200
94.08489209
94.10507219
94.12525229
94.14543240
94.16561251
94.18579263
94.20597274
94.22615286
94.24633299
94.26652312
94.28670325
94.30688339
94.32706353
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Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Link 32L: POA1
Inflow Area =73,567 sf,27.76% Impervious,Inflow Depth = 0.00" for 100 YR-C event
Inflow =0.00 cfs @0.00 hrs, Volume=0 cf
Primary =0.00 cfs @0.00 hrs, Volume=0 cf, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 32L: POA1
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Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LL
Page 358
Hydrograph for Link 32L: POA1
Time (hours)Inflow (cfs)Elevation (feet)Primary (cfs)
0.000.000.000.00
1.000.000.000.00
2.000.000.000.00
3.000.000.000.00
4.000.000.000.00
5.000.000.000.00
6.000.000.000.00
7.000.000.000.00
8.000.000.000.00
9.000.000.000.00
10.000.000.000.00
11.000.000.000.00
12.000.000.000.00
13.000.000.000.00
14.000.000.000.00
15.000.000.000.00
16.000.000.000.00
17.000.000.000.00
18.000.000.000.00
19.000.000.000.00
20.000.000.000.00
21.000.000.000.00
22.000.000.000.00
23.000.000.000.00
24.000.000.000.00
25.000.000.000.00
26.000.000.000.00
27.000.000.000.00
28.000.000.000.00
29.000.000.000.00
30.000.000.000.00
31.000.000.000.00
32.000.000.000.00
33.000.000.000.00
34.000.000.000.00
35.000.000.000.00
36.000.000.000.00
37.000.000.000.00
38.000.000.000.00
39.000.000.000.00
40.000.000.000.00
41.000.000.000.00
42.000.000.000.00
43.000.000.000.00
44.000.000.000.00
45.000.000.000.00
46.000.000.000.00
47.000.000.000.00
48.000.000.000.00
49.000.000.000.00
50.000.000.000.00
51.000.000.000.00
Time (hours)Inflow (cfs)Elevation (feet)Primary (cfs)
52.000.000.000.00
53.000.000.000.00
54.000.000.000.00
55.000.000.000.00
56.000.000.000.00
57.000.000.000.00
58.000.000.000.00
59.000.000.000.00
60.000.000.000.00
61.000.000.000.00
62.000.000.000.00
63.000.000.000.00
64.000.000.000.00
65.000.000.000.00
66.000.000.000.00
67.000.000.000.00
68.000.000.000.00
69.000.000.000.00
70.000.000.000.00
71.000.000.000.00
72.000.000.000.00
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Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Link 33L: POA 2
Inflow Area = 27,007 sf, 30.65% Impervious, Inflow Depth = 0.44" for 100 YR-C event Inflow = 0.10 cfs @ 13.23 hrs, Volume = 981 cf Primary = 0.10 cfs @ 13.23 hrs, Volume = 981 cf, Atten = 0%, Lag = 0.0 min
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 33L: POA 2
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Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions Ltd
Hydrograph for Link 33L: POA 2
Time (hours)Inflow (cfs)Elevation (feet)Primary (cfs)
0.000.000.000.00
1.000.000.000.00
2.000.000.000.00
3.000.000.000.00
4.000.000.000.00
5.000.000.000.00
6.000.000.000.00
7.000.000.000.00
8.000.000.000.00
9.000.000.000.00
10.000.000.000.00
11.000.000.000.00
12.000.000.000.00
13.000.100.000.10
14.000.090.000.09
15.000.070.000.07
16.000.020.000.02
17.000.000.000.00
18.000.000.000.00
19.000.000.000.00
20.000.000.000.00
21.000.000.000.00
22.000.000.000.00
23.000.000.000.00
24.000.000.000.00
25.000.000.000.00
26.000.000.000.00
27.000.000.000.00
28.000.000.000.00
29.000.000.000.00
30.000.000.000.00
31.000.000.000.00
32.000.000.000.00
33.000.000.000.00
34.000.000.000.00
35.000.000.000.00
36.000.000.000.00
37.000.000.000.00
38.000.000.000.00
39.000.000.000.00
40.000.000.000.00
41.000.000.000.00
42.000.000.000.00
43.000.000.000.00
44.000.000.000.00
45.000.000.000.00
46.000.000.000.00
47.000.000.000.00
48.000.000.000.00
49.000.000.000.00
50.000.000.000.00
51.000.000.000.00
Time (hours)Inflow (cfs)Elevation (feet)Primary (cfs)
52.000.000.000.00
53.000.000.000.00
54.000.000.000.00
55.000.000.000.00
56.000.000.000.00
57.000.000.000.00
58.000.000.000.00
59.000.000.000.00
60.000.000.000.00
61.000.000.000.00
62.000.000.000.00
63.000.000.000.00
64.000.000.000.00
65.000.000.000.00
66.000.000.000.00
67.000.000.000.00
68.000.000.000.00
69.000.000.000.00
70.000.000.000.00
71.000.000.000.00
72.000.000.000.00
Page 528 Download HTML
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 12/19/2025 tions LLC Page 361
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Link 34L: POA 3
Inflow Area = 38,333 sf, 22.73% Impervious, Inflow Depth = 0.13" for 100 YR-C event Inflow = 0.07 cfs @ 13.49 hrs, Volume = 413 cf Primary = 0.07 cfs @ 13.49 hrs, Volume = 413 cf, Atten = 0%, Lag = 0.0 min
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 34L: POA 3
Page 529 Download HTML
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 12/19/2025 tions LLC Page 362
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions Ltd
Page 362
Hydrograph for Link 34L: POA 3
Time (hours)Inflow (cfs)Elevation (feet)Primary (cfs)
0.000.000.000.00
1.000.000.000.00
2.000.000.000.00
3.000.000.000.00
4.000.000.000.00
5.000.000.000.00
6.000.000.000.00
7.000.000.000.00
8.000.000.000.00
9.000.000.000.00
10.000.000.000.00
11.000.000.000.00
12.000.000.000.00
13.000.050.000.05
14.000.060.000.06
15.000.010.000.01
16.000.000.000.00
17.000.000.000.00
18.000.000.000.00
19.000.000.000.00
20.000.000.000.00
21.000.000.000.00
22.000.000.000.00
23.000.000.000.00
24.000.000.000.00
25.000.000.000.00
26.000.000.000.00
27.000.000.000.00
28.000.000.000.00
29.000.000.000.00
30.000.000.000.00
31.000.000.000.00
32.000.000.000.00
33.000.000.000.00
34.000.000.000.00
35.000.000.000.00
36.000.000.000.00
37.000.000.000.00
38.000.000.000.00
39.000.000.000.00
40.000.000.000.00
41.000.000.000.00
42.000.000.000.00
43.000.000.000.00
44.000.000.000.00
45.000.000.000.00
46.000.000.000.00
47.000.000.000.00
48.000.000.000.00
49.000.000.000.00
50.000.000.000.00
51.000.000.000.00
Time (hours)Inflow (cfs)Elevation (feet)Primary (cfs)
52.000.000.000.00
53.000.000.000.00
54.000.000.000.00
55.000.000.000.00
56.000.000.000.00
57.000.000.000.00
58.000.000.000.00
59.000.000.000.00
60.000.000.000.00
61.000.000.000.00
62.000.000.000.00
63.000.000.000.00
64.000.000.000.00
65.000.000.000.00
66.000.000.000.00
67.000.000.000.00
68.000.000.000.00
69.000.000.000.00
70.000.000.000.00
71.000.000.000.00
72.000.000.000.00
Page 530 Download HTML
Analysis - Proposed Conditions NOAA 24-hr D 100 YR-F Rainfall=11.41" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 363
Time span=0.00-72.00 hrs, dt=0.01 hrs, 7201 points Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method
Runoff by SCS 1K-20 method, OH=Delmarva, Split Pervious/Imperv. UI as Pervious Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method
Subcatchment2S: DA-P1 PERVOUSRunoff Area=1,220 ac 0.00% Impervious Runoff Depth=2.87" Flow Length=525' Tc=14.2 min CN=39/0 Runoff=1.88 cfs 12,697 cf
Subcatchment3S: DA-P3 PERVOUSRunoff Area=0.680 ac 0.00% Impervious Runoff Depth=2.87" Flow Length=363' Tc=11.5 min CN=39/0 Runoff=1.18 cfs 7,077 cf
Subcatchment4S: DA-P2 PERVOUSRunoff Area=0.430 ac 0.00% Impervious Runoff Depth=2.87" Flow Length=168' Slope=0.0300 /' Tc=8.7 min CN=39/0 Runoff=0.86 cfs 4,475 cf
Subcatchment6S: DA-P3 IMPERVOUSRunoff Area=0.200 ac 100.00% Impervious Runoff Depth=11.17" Flow Length=155' Tc=4.3 min CN=0/98 Runoff=1.98 cfs 8,108 cf
Subcatchment7S: DA-P2 IMPERVOUSRunoff Area=0.190 ac 100.00% Impervious Runoff Depth=11.17" Flow Length=172' Tc=4.3 min CN=0/98 Runoff=1.89 cfs 7,703 cf
Subcatchment8S: DA-P1 IMPERVOUSRunoff Area=0.400 ac 100.00% Impervious Runoff Depth=11.17" Flow Length=372' Slope=0.0200 /' Tc=2.5 min CN=0/98 Runoff=4.49 cfs 16,217 cf
Subcatchment14S: LOT 11 RoofRunoff Area=3,000 sf 100.00% Impervious Runoff Depth=11.17" Flow Length=40' Tc=0.3 min CN=0/98 Runoff=0.83 cfs 2,792 cf
Pond 2P: Subsurface Infiltration Basin 1Peak Elev=92.62' Storage=7,159 cf Inflow=4.40 cfs 30,199 cf Discarded=0.57 cfs 29,874 cf Primary=0.25 cfs 325 cf Outflow=0.82 cfs 30,199 cf
Pond 5P: BIORETENTIONBASIN 1APeak Elev=95.17' Storage=7,760 cf Inflow=5.50 cfs 28,914 cf Outflow=4.12 cfs 27,407 cf
Pond 6P: BIORETENTIONBASIN 2APeak Elev=95.56' Storage=183 cf Inflow=0.86 cfs 4,475 cf Outflow=0.86 cfs 4,428 cf
Pond 8P: INFILTRATIONBASIN 3Peak Elev=94.40' Storage=4,201 cf Inflow=2.66 cfs 15,082 cf Discarded=0.27 cfs 12,583 cf Primary=0.20 cfs 2,499 cf Outflow=0.47 cfs 15,082 cf
Pond 10P: PERVIOUS PAVEMENT2BPeak Elev=94.90' Storage=1,145 cf Inflow=1.89 cfs 7,703 cf Outflow=1.76 cfs 7,699 cf
Pond 15P: PERVIOUS PAVEMENT3BPeak Elev=94.90' Storage=1,116 cf Inflow=1.98 cfs 8,108 cf Outflow=1.86 cfs 8,105 cf
Pond 33P: INFILTRATIONBASIN 2Peak Elev=94.71' Storage=3,760 cf Inflow=2.57 cfs 12,127 cf Discarded=0.24 cfs 9,837 cf Primary=0.25 cfs 2,290 cf Outflow=0.48 cfs 12,127 cf
Pond 42P: BIORENTION BASIN 3APeak Elev=94.57' Storage=560 cf Inflow=1.18 cfs 7,077 cf Outflow=1.17 cfs 6,978 cf
Link 32L: POA1Inflow=0.25 cfs 325 cf Primary=0.25 cfs 325 cf
Page 531 Download HTML
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC NOAA 24-hr D 100 YR-F Rainfall=11.41' Printed 12/19/2025 Page 364
Link 33L: POA 2 Link 34L: POA 3 Total Runoff Area = 138,907 sf Runoff Volume = 59,070 cf Average Runoff Depth = 5.10" 73.07% Pervious = 101,495 sf 26.93% Impervious = 37,412 sf
Page 532 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 12/19/2025 tions LLC Page 365
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 2S: DA-P1 PERVIOUS
Runoff = 1.88 cfs @ 12.27 hrs, Volume= Routed to Pond 5P : BIORETENTION BASIN 1A
12,697 cf, Depth= 2.87"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 100 YR-F Rainfall=11.41"
Page 533 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 12/19/2025
YR-F Rainfall=11.41" Printed 12/19/2025 Page 366
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions Ltd
Hydrograph for Subcatchment 2S: DA-P1 PERVIOUS
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.270.000.000.00
4.000.600.000.000.00
6.000.970.000.000.00
8.001.480.000.000.00
10.002.260.000.000.00
12.005.470.300.000.45
14.009.151.670.000.37
16.009.932.060.000.20
18.0010.442.330.000.14
20.0010.812.530.000.12
22.0011.142.710.000.11
24.0011.412.870.000.09
26.0011.412.870.000.00
28.0011.412.870.000.00
30.0011.412.870.000.00
32.0011.412.870.000.00
34.0011.412.870.000.00
36.0011.412.870.000.00
38.0011.412.870.000.00
40.0011.412.870.000.00
42.0011.412.870.000.00
44.0011.412.870.000.00
46.0011.412.870.000.00
48.0011.412.870.000.00
50.0011.412.870.000.00
52.0011.412.870.000.00
54.0011.412.870.000.00
56.0011.412.870.000.00
58.0011.412.870.000.00
60.0011.412.870.000.00
62.0011.412.870.000.00
64.0011.412.870.000.00
66.0011.412.870.000.00
68.0011.412.870.000.00
70.0011.412.870.000.00
72.0011.412.870.000.00
Page 534 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 12/19/2025 tions LLC Page 367
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 3S: DA-P3 PERVIOUS
Runoff = 1.18 cfs @ 12.22 hrs, Volume= 7,077 cf, Depth= 2.87" Routed to Pond 42P : BIORENTION BASIN 3A
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 100 YR-F Rainfall=11.41"
Area (ac) CN Description
0.680 39 >75% Grass cover, Good, HSG A
0.680 39 100.00% Pervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
9.0 83 0.0400 0.15 Sheet Flow, Grass: Dense n= 0.240 P2= 3.42" Using McCuen-Spiess flow length
0.2 10 0.0240 1.08 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps
2.2 270 2.00 Direct Entry, Pioe Flow
11.5 363 Total
Page 535 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 12/19/2025
YR-F Rainfall=11.41" Printed 12/19/2025 Page 368
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions Ltd
Hydrograph for Subcatchment 3S: DA-P3 PERVIOUS
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.270.000.000.00
4.000.600.000.000.00
6.000.970.000.000.00
8.001.480.000.000.00
10.002.260.000.000.00
12.005.470.300.000.32
14.009.151.670.000.20
16.009.932.060.000.11
18.0010.442.330.000.08
20.0010.812.530.000.07
22.0011.142.710.000.06
24.0011.412.870.000.05
26.0011.412.870.000.00
28.0011.412.870.000.00
30.0011.412.870.000.00
32.0011.412.870.000.00
34.0011.412.870.000.00
36.0011.412.870.000.00
38.0011.412.870.000.00
40.0011.412.870.000.00
42.0011.412.870.000.00
44.0011.412.870.000.00
46.0011.412.870.000.00
48.0011.412.870.000.00
50.0011.412.870.000.00
52.0011.412.870.000.00
54.0011.412.870.000.00
56.0011.412.870.000.00
58.0011.412.870.000.00
60.0011.412.870.000.00
62.0011.412.870.000.00
64.0011.412.870.000.00
66.0011.412.870.000.00
68.0011.412.870.000.00
70.0011.412.870.000.00
72.0011.412.870.000.00
Page 536 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 12/19/2025 tions LLC Page 369
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 4S: DA-P2 PERVIOUS
Runoff = 0.86 cfs @ 12.18 hrs, Volume= Routed to Pond 6P : BIORENTION BASIN 2A
4,475 cf, Depth= 2.87"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 100 YR-F Rainfall=11.41"
Area (ac) CN Description
0.430 39 >75% Grass cover, Good, HSG A
0.430 39 100.00% Pervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
7.8 60 0.0300 0.13 Sheet Flow, Grass: Dense n= 0.240 P2= 3.42"
0.9 108 2.00 Direct Entry, Pipe Flow
8.7 168 Total
Subcatchment 4S: DA-P2 PERVIOUS
Subcatchment 4S: DA-P2 PERVIOUS
Page 537 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 12/19/2025
YR-F Rainfall=11.41" Printed 12/19/2025 Page 370
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions Ltd
Hydrograph for Subcatchment 4S: DA-P2 PERVIOUS
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.270.000.000.00
4.000.600.000.000.00
6.000.970.000.000.00
8.001.480.000.000.00
10.002.260.000.000.00
12.005.470.300.000.27
14.009.151.670.000.12
16.009.932.060.000.07
18.0010.442.330.000.05
20.0010.812.530.000.04
22.0011.142.710.000.04
24.0011.412.870.000.03
26.0011.412.870.000.00
28.0011.412.870.000.00
30.0011.412.870.000.00
32.0011.412.870.000.00
34.0011.412.870.000.00
36.0011.412.870.000.00
38.0011.412.870.000.00
40.0011.412.870.000.00
42.0011.412.870.000.00
44.0011.412.870.000.00
46.0011.412.870.000.00
48.0011.412.870.000.00
50.0011.412.870.000.00
52.0011.412.870.000.00
54.0011.412.870.000.00
56.0011.412.870.000.00
58.0011.412.870.000.00
60.0011.412.870.000.00
62.0011.412.870.000.00
64.0011.412.870.000.00
66.0011.412.870.000.00
68.0011.412.870.000.00
70.0011.412.870.000.00
72.0011.412.870.000.00
Page 538 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 12/19/2025 tions LLC Page 371
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 6S: DA-P3 IMPERVIOUS
Runoff = 1.98 cfs @ 12.12 hrs, Volume= Routed to Pond 15P : PERVIOUS PAVEMENT 3B 8,108 cf, Depth=11.17"
8,108 cf. Depth=11.17"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 100 YR-F Rainfall=11.41"
Area (ac) CN Description
0.200 98 Paved parking, HSG A
0.200 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
3.6 37 0.0300 0.17 Sheet Flow, Grass: Short n= 0.150 P2= 3.42" Shallow Concentrated Flow, Paved Kv= 20.3 fps
0.7 118 0.0200 2.87
4.3 155 Total
Subcatchment 6S: DA-P3 IMPERVIOUS
Subcatchment 6S: DA-P3 IMPERVIOUS
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours)
Page 539 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 12/19/2025
YR-F Rainfall=11.41" Printed 12/19/2025 Page 372
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LL
Hydrograph for Subcatchment 6S: DA-P3 IMPERVIOUS
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.270.000.120.02
4.000.600.000.410.03
6.000.970.000.770.04
8.001.480.001.260.06
10.002.260.002.030.10
12.005.470.005.231.14
14.009.150.008.910.11
16.009.930.009.690.06
18.0010.440.0010.190.04
20.0010.810.0010.570.04
22.0011.140.0010.890.03
24.0011.410.0011.170.03
26.0011.410.0011.170.00
28.0011.410.0011.170.00
30.0011.410.0011.170.00
32.0011.410.0011.170.00
34.0011.410.0011.170.00
36.0011.410.0011.170.00
38.0011.410.0011.170.00
40.0011.410.0011.170.00
42.0011.410.0011.170.00
44.0011.410.0011.170.00
46.0011.410.0011.170.00
48.0011.410.0011.170.00
50.0011.410.0011.170.00
52.0011.410.0011.170.00
54.0011.410.0011.170.00
56.0011.410.0011.170.00
58.0011.410.0011.170.00
60.0011.410.0011.170.00
62.0011.410.0011.170.00
64.0011.410.0011.170.00
66.0011.410.0011.170.00
68.0011.410.0011.170.00
70.0011.410.0011.170.00
72.0011.410.0011.170.00
Page 540 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 12/19/2025 utions LLC Page 373
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 7S: DA-P2 IMPERVIOUS
Runoff = 1.89 cfs @ 12.12 hrs, Volume= Routed to Pond 10P : PERVIOUS PAVEMENT 2B 7,703 cf, Depth=11.17"
7,703 cf, Depth=11.17
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 100 YR-F Rainfall=11.41"
Area (ac) CN Description
0.190 98 Paved roads w/curbs & sewers, HSG A
0.190 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
3.5 35 0.0300 0.17 Sheet Flow,
0.8 137 0.0200 2.87 Grass: Short n= 0.150 P2= 3.42"
Shallow Concentrated Flow,
Paved Kv= 20.3 fps
4.3 172 Total
Subcatchment 7S: DA-P2 IMPERVIOUS
Subcatchment 7S: DA-P2 IMPERVIOUS
Page 541 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 12/19/2025
YR-F Rainfall=11.41" Printed 12/19/2025 Page 374
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LL
Hydrograph for Subcatchment 7S: DA-P2 IMPERVIOUS
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.270.000.120.02
4.000.600.000.410.03
6.000.970.000.770.04
8.001.480.001.260.06
10.002.260.002.030.10
12.005.470.005.231.08
14.009.150.008.910.11
16.009.930.009.690.06
18.0010.440.0010.190.04
20.0010.810.0010.570.03
22.0011.140.0010.890.03
24.0011.410.0011.170.02
26.0011.410.0011.170.00
28.0011.410.0011.170.00
30.0011.410.0011.170.00
32.0011.410.0011.170.00
34.0011.410.0011.170.00
36.0011.410.0011.170.00
38.0011.410.0011.170.00
40.0011.410.0011.170.00
42.0011.410.0011.170.00
44.0011.410.0011.170.00
46.0011.410.0011.170.00
48.0011.410.0011.170.00
50.0011.410.0011.170.00
52.0011.410.0011.170.00
54.0011.410.0011.170.00
56.0011.410.0011.170.00
58.0011.410.0011.170.00
60.0011.410.0011.170.00
62.0011.410.0011.170.00
64.0011.410.0011.170.00
66.0011.410.0011.170.00
68.0011.410.0011.170.00
70.0011.410.0011.170.00
72.0011.410.0011.170.00
Page 542 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 12/19/2025 Page 375
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 8S: DA-P1 IMPERVIOUS
Runoff = 4.49 cfs @ 12.11 hrs, Volume= Routed to Pond 5P : BIORETENTION BASIN 1A
16,217 cf, Depth=11.17"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 100 YR-F Rainfall=11.41"
Area (ac) CN Description
0.400 98 Paved roads w/curbs & sewers, HSG A
0.400 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
1.4 235 0.0200 2.87 Shallow Concentrated Flow, Paved Kv= 20.3 fps
1.1 137 2.00 Direct Entry, Pipe Flow
2.5 372 Total
Subcatchment 8S: DA-P1_IMPERVIOUS
Subcatchment 8S: DA-P1 IMPERVIOUS
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours)
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Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LL
Hydrograph for Subcatchment 8S: DA-P1 IMPERVIOUS
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.270.000.120.05
4.000.600.000.410.07
6.000.970.000.770.08
8.001.480.001.260.12
10.002.260.002.030.21
12.005.470.005.232.65
14.009.150.008.910.22
16.009.930.009.690.12
18.0010.440.0010.190.08
20.0010.810.0010.570.07
22.0011.140.0010.890.06
24.0011.410.0011.170.05
26.0011.410.0011.170.00
28.0011.410.0011.170.00
30.0011.410.0011.170.00
32.0011.410.0011.170.00
34.0011.410.0011.170.00
36.0011.410.0011.170.00
38.0011.410.0011.170.00
40.0011.410.0011.170.00
42.0011.410.0011.170.00
44.0011.410.0011.170.00
46.0011.410.0011.170.00
48.0011.410.0011.170.00
50.0011.410.0011.170.00
52.0011.410.0011.170.00
54.0011.410.0011.170.00
56.0011.410.0011.170.00
58.0011.410.0011.170.00
60.0011.410.0011.170.00
62.0011.410.0011.170.00
64.0011.410.0011.170.00
66.0011.410.0011.170.00
68.0011.410.0011.170.00
70.0011.410.0011.170.00
72.0011.410.0011.170.00
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Page 377
Summary for Subcatchment 14S: LOT 11 Roof
Runoff = 0.83 cfs @ 12.09 hrs, Volume= 2,792 cf, Depth=11.17"
Routed to Pond 2P : Subsurface Infiltration Basin 1
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 100 YR-F Rainfall=11.41"
Area (sf) CN Description
3,000 98 Roofs, HSG A
3,000 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)
0.3 40 2.00 Direct Entry, Pipe Flow
Subcatchment 14S: LOT 11 Roof
Runoff
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Hydrograph for Subcatchment 14S: LOT 11 Roof
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.270.000.120.01
4.000.600.000.410.01
6.000.970.000.770.01
8.001.480.001.260.02
10.002.260.002.030.04
12.005.470.005.230.52
14.009.150.008.910.04
16.009.930.009.690.02
18.0010.440.0010.190.01
20.0010.810.0010.570.01
22.0011.140.0010.890.01
24.0011.410.0011.170.01
26.0011.410.0011.170.00
28.0011.410.0011.170.00
30.0011.410.0011.170.00
32.0011.410.0011.170.00
34.0011.410.0011.170.00
36.0011.410.0011.170.00
38.0011.410.0011.170.00
40.0011.410.0011.170.00
42.0011.410.0011.170.00
44.0011.410.0011.170.00
46.0011.410.0011.170.00
48.0011.410.0011.170.00
50.0011.410.0011.170.00
52.0011.410.0011.170.00
54.0011.410.0011.170.00
56.0011.410.0011.170.00
58.0011.410.0011.170.00
60.0011.410.0011.170.00
62.0011.410.0011.170.00
64.0011.410.0011.170.00
66.0011.410.0011.170.00
68.0011.410.0011.170.00
70.0011.410.0011.170.00
72.0011.410.0011.170.00
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 2P: Subsurface Infiltration Basin 1
Inflow Area = 73,567 sf, 27.76% Impervious, Inflow Depth = 4.93" for 100 YR-F event
Inflow = 4.40 cfs @ 12.18 hrs, Volume= 30,199 cf
Outflow = 0.82 cfs @ 13.56 hrs, Volume= 30,199 cf, Atten= 81%, Lag= 82.7 min
Discarded = 0.57 cfs @ 12.00 hrs, Volume= 29,874 cf
Primary = 0.25 cfs @ 13.56 hrs, Volume= 325 cf
Routed to Link 32L : POA1
Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs
Peak Elev= 92.62' @ 13.56 hrs Surf.Area= 2,475 sf Storage= 7,159 cf
Plug-Flow detention time= 92.0 min calculated for 30,195 cf (100% of inflow)
Volume Invert Avail.Storage Storage Description
Center-of-Mass det. time= 92.0 min ( 1,079.3 - 987.3 )
#1A 87.00' 4,349 cf 27.50"W x 90.00"L x 6.00"H Field A 14,850 cf Overall - 3,979 cf Embedded = 10,871 cf x 40.0% Voids
#2A 87.50' 3,188 cf ADS N-12 36" x 20 Inside #1 Inside= 36.1"W x 36.1"H => 7.10 sf x 20.00"L = 142.0 cf Outside= 42.0"W x 42.0"H => 8.86 sf x 20.00"L = 177.2 cf 20 Chambers in 5 Rows 24.50' Header x 7.10 sf x 2 = 347.9 cf Inside
7,536 cf Total Available Storage
Device Routing Invert Outlet Devices
Storage Group A created with Chamber Wizard
#1 Primary 92.59' 48.0" x 48.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads
#2 Device 1 88.00' 12.0" Round Culvert L= 119.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 88.00' / 86.00' S= 0.0168 /' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 0.79 sf
#3 Discarded 87.00' 10.000 in/hr Exfiltration over Surface area Phase-In= 0.01'
Discarded OutFlow Max=0.57 cfs @ 12.00 hrs HW=87.07' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.57 cfs)
Primary OutFlow Max=0.25 cfs @ 13.56 hrs HW=92.62' TW=0.00' (Dynamic Tailwater) 1=Grate (Weir Controls 0.25 cfs @ 0.55 fps) 2=Culvert (Passes 0.25 cfs of 0.49 cfs potential flow)
Pond 2P: Subsurface Infiltration Basin 1
Grate
Culvert
Exfiltration
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Pond 2P: Subsurface Infiltration Basin 1 - Chamber Wizard Field A
Chamber Model = ADS N-12 36" (ADS N-12ยฎ Pipe) Inside= 36.1"W x 36.1"H => 7.10 sf x 20.00'L = 142.0 cf Outside= 42.0"W x 42.0"H => 8.86 sf x 20.00'L = 177.2 cf 42.0" Wide + 21.0" Spacing = 63.0" C-C Row Spacing 4 Chambers/Row x 20.00' Long +3.50' Header x 2 = 87.00' Row Length +18.0" End Stone x 2 = 90.00' Base Length 5 Rows x 42.0" Wide + 21.0" Spacing x 4 + 18.0" Side Stone x 2 = 27.50' Base Width 6.0" Stone Base + 42.0" Chamber Height + 24.0" Stone Cover = 6.00' Field Height 20 Chambers x 142.0 cf + 24.50' Header x 7.10 sf x 2 = 3,187.9 cf Chamber Storage 20 Chambers x 177.2 cf + 24.50' Header x 8.86 sf x 2 = 3,978.6 cf Displacement 14,850.0 cf Field - 3,978.6 cf Chambers = 10,871.4 cf Stone x 40.0% Voids = 4,348.5 cf Stone Storage Chamber Storage + Stone Storage = 7,536.4 cf = 0.173 af Overall Storage Efficiency = 50.8% Overall System Size = 90.00' x 27.50' x 6.00' 20 Chambers 550.0 cy Field 402.6 cy Stone
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Pond 2P: Subsurface Infiltration Basin 1
Pond 2P: Subsurface Infiltration Basin 1
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Pond 2P: Subsurface Infiltration Basin 1
Stage-Area-Storage
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0 YR-F Rainfall=11.41" Printed 12/19/2025 Page 383
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 12/19/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 2P: Subsurface Infiltration Basin 1
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Outflow (cfs)Discarded (cfs)Primary (cfs)
0.000.00087.000.000.000.00
2.000.01087.000.010.010.00
4.000.01087.000.010.010.00
6.000.01087.000.010.010.00
8.000.06187.000.060.060.00
10.000.14287.000.140.140.00
12.000.786587.070.570.570.00
14.000.647,14392.600.640.570.07
16.000.356,28891.740.570.570.00
18.000.334,59690.170.570.570.00
20.000.312,76389.100.570.570.00
22.000.2875687.820.570.570.00
24.000.25487.000.250.250.00
26.000.18387.000.190.190.00
28.000.12287.000.120.120.00
30.000.06187.000.060.060.00
32.000.01087.000.010.010.00
34.000.00087.000.000.000.00
36.000.00087.000.000.000.00
38.000.00087.000.000.000.00
40.000.00087.000.000.000.00
42.000.00087.000.000.000.00
44.000.00087.000.000.000.00
46.000.00087.000.000.000.00
48.000.00087.000.000.000.00
50.000.00087.000.000.000.00
52.000.00087.000.000.000.00
54.000.00087.000.000.000.00
56.000.00087.000.000.000.00
58.000.00087.000.000.000.00
60.000.00087.000.000.000.00
62.000.00087.000.000.000.00
64.000.00087.000.000.000.00
66.000.00087.000.000.000.00
68.000.00087.000.000.000.00
70.000.00087.000.000.000.00
72.000.00087.000.000.000.00
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Stage-Discharge for Pond 2P: Subsurface Infiltration Basin 1
Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)
87.000.000.000.00
87.100.570.570.00
87.200.570.570.00
87.300.570.570.00
87.400.570.570.00
87.500.570.570.00
87.600.570.570.00
87.700.570.570.00
87.800.570.570.00
87.900.570.570.00
88.000.570.570.00
88.100.570.570.00
88.200.570.570.00
88.300.570.570.00
88.400.570.570.00
88.500.570.570.00
88.600.570.570.00
88.700.570.570.00
88.800.570.570.00
88.900.570.570.00
89.000.570.570.00
89.100.570.570.00
89.200.570.570.00
89.300.570.570.00
89.400.570.570.00
89.500.570.570.00
89.600.570.570.00
89.700.570.570.00
89.800.570.570.00
89.900.570.570.00
90.000.570.570.00
90.100.570.570.00
90.200.570.570.00
90.300.570.570.00
90.400.570.570.00
90.500.570.570.00
90.600.570.570.00
90.700.570.570.00
90.800.570.570.00
90.900.570.570.00
91.000.570.570.00
91.100.570.570.00
91.200.570.570.00
91.300.570.570.00
91.400.570.570.00
91.500.570.570.00
91.600.570.570.00
91.700.570.570.00
91.800.570.570.00
91.900.570.570.00
92.000.570.570.00
92.100.570.570.00
Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)
92.200.570.570.00
92.300.570.570.00
92.400.570.570.00
92.500.570.570.00
92.600.630.570.05
92.701.540.570.97
92.801.910.571.33
92.902.190.571.62
93.002.440.571.86
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Stage-Area-Storage for Pond 2P: Subsurface Infiltration Basin 1
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
87.002,4750
87.102,47599
87.202,475198
87.302,475297
87.402,475396
87.502,475495
87.602,475581
87.702,475657
87.802,475739
87.902,475852
88.002,475980
88.102,4751,118
88.202,4751,264
88.302,4751,416
88.402,4751,573
88.502,4751,735
88.602,4751,900
88.702,4752,069
88.802,4752,240
88.902,4752,412
89.002,4752,587
89.102,4752,762
89.202,4752,938
89.302,4753,114
89.402,4753,290
89.502,4753,465
89.602,4753,639
89.702,4753,812
89.802,4753,983
89.902,4754,151
90.002,4754,316
90.102,4754,478
90.202,4754,636
90.302,4754,788
90.402,4754,934
90.502,4755,072
90.602,4755,200
90.702,4755,313
90.802,4755,395
90.902,4755,470
91.002,4755,556
91.102,4755,655
91.202,4755,754
91.302,4755,853
91.402,4755,952
91.502,4756,051
91.602,4756,150
91.702,4756,249
91.802,4756,348
91.902,4756,447
92.002,4756,546
92.102,4756,645
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
92.202,4756,744
92.302,4756,843
92.402,4756,942
92.502,4757,041
92.602,4757,140
92.702,4757,239
92.802,4757,338
92.902,4757,437
93.002,4757,536
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Summary for Pond 5P: BIORETENTION BASIN 1A
Inflow Area =70,567 sf,24.69% Impervious,Inflow Depth = 4.92" for 100 YR-F event
Inflow =5.50 cfs @12.11 hrs,Volume= 28,914 cf
Outflow =4.12 cfs @12.18 hrs,Volume= 27,407 cf, Atten= 25%, Lag= 4.0 min
Primary =4.12 cfs @12.18 hrs,Volume= 27,407 cf
Routed to Bond 2B : Subsurface Infiltration Basin 1
Routed to Pond 2P : Subsurface Infiltration Basin 1
Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 95.17' @ 12.18 hrs Surf.Area= 1,500 sf Storage= 7,760 cf Plug-Flow detention time= 232.3 min calculated for 27,407 cf (95% of inflow) Center-of-Mass det. time= 201.5 min (1,013.2 - 811.7)
VolumeInvertAvail.StorageStorage Description
#190.00'8,250 cfCustom Stage Data (Prismatic)Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
90.001,50000
95.501,5008,2508,250
DeviceRoutingInvertOutlet Devices
#1Device 391.00'2.5" Vert. Orifice C = 0.600 Limited to weir flow at low heads
#2Device 395.00'48.0" x 48.0" Horiz. Grate C = 0.600 Limited to weir flow at low heads
#3Primary87.48'12.0" Round Culvert\n L = 28.0' RCP, groove end projecting, Ke = 0.200\nInlet / Outlet Invert= $ 87.48'/87.00' $ S = 0.0171'/' Cc = 0.900\n n = 0.012 Concrete pipe, finished, Flow Area= $ 0.79sf $
Primary OutFlow Max=4.11 cfs @ 12.18 hrs HW=95.17' TW=87.79' (Dynamic Tailwater) 3=Culvert (Passes 4.11 cfs of 12.09 cfs potential flow) 1=Orifice (Orifice Controls 0.33 cfs @ 9.71 fps) 2=Grate (Weir Controls 3.78 cfs @ 1.36 fps)
Pond 5P: BIORETENTION BASIN 1A Orifice
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Pond 5P: BIORETENTION BASIN 1A
Pond 5P: BIORETENTION BASIN 1A
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Pond 5P: BIORETENTION BASIN 1A
Stage-Area-Storage
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Hydrograph for Pond 5P: BIORETENTION BASIN 1A
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Primary (cfs)
0.000.00090.000.00
2.000.0517090.110.00
4.000.0757890.390.00
6.000.081,09490.730.00
8.000.121,75791.170.04
10.000.212,29991.530.11
12.003.115,51393.680.26
14.000.597,55295.030.60
16.000.337,51195.010.33
18.000.237,20494.800.32
20.000.196,48594.320.29
22.000.175,74193.830.27
24.000.144,99293.330.24
26.000.003,56192.370.18
28.000.002,46291.640.12
30.000.001,82991.220.06
32.000.001,62391.080.01
34.000.001,57191.050.00
36.000.001,54991.030.00
38.000.001,53791.020.00
40.000.001,53091.020.00
42.000.001,52591.020.00
44.000.001,52291.010.00
46.000.001,51991.010.00
48.000.001,51791.010.00
50.000.001,51591.010.00
52.000.001,51491.010.00
54.000.001,51391.010.00
56.000.001,51291.010.00
58.000.001,51191.010.00
60.000.001,51091.010.00
62.000.001,51091.010.00
64.000.001,50991.010.00
66.000.001,50891.010.00
68.000.001,50891.010.00
70.000.001,50891.010.00
72.000.001,50791.000.00
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Stage-Discharge for Pond 5P: BIORETENTION BASIN 1A
Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)
90.000.0092.600.20
90.050.0092.650.20
90.100.0092.700.21
90.150.0092.750.21
90.200.0092.800.21
90.250.0092.850.22
90.300.0092.900.22
90.350.0092.950.22
90.400.0093.000.23
90.450.0093.050.23
90.500.0093.100.23
90.550.0093.150.23
90.600.0093.200.24
90.650.0093.250.24
90.700.0093.300.24
90.750.0093.350.25
90.800.0093.400.25
90.850.0093.450.25
90.900.0093.500.25
90.950.0093.550.26
91.000.0093.600.26
91.050.0093.650.26
91.100.0293.700.26
91.150.0393.750.27
91.200.0593.800.27
91.250.0693.850.27
91.300.0793.900.27
91.350.0893.950.28
91.400.0994.000.28
91.450.1094.050.28
91.500.1094.100.28
91.550.1194.150.29
91.600.1294.200.29
91.650.1294.250.29
91.700.1394.300.29
91.750.1394.350.30
91.800.1494.400.30
91.850.1494.450.30
91.900.1594.500.30
91.950.1594.550.30
92.000.1694.600.31
92.050.1694.650.31
92.100.1694.700.31
92.150.1794.750.31
92.200.1794.800.32
92.250.1894.850.32
92.300.1894.900.32
92.350.1894.950.32
92.400.1995.000.32
92.450.1995.050.91
92.500.1995.101.98
92.550.2095.153.37
Elevation (feet)Primary (cfs)
95.205.01
95.256.87
95.308.93
95.3511.17
95.4012.28
95.4512.32
95.5012.36
Page 558 Download HTML
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Area-Storage for Pond 5P: BIORETENTION BASIN 1A
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
90.001,5000
90.101,500150
90.201,500300
90.301,500450
90.401,500600
90.501,500750
90.601,500900
90.701,5001,050
90.801,5001,200
90.901,5001,350
91.001,5001,500
91.101,5001,650
91.201,5001,800
91.301,5001,950
91.401,5002,100
91.501,5002,250
91.601,5002,400
91.701,5002,550
91.801,5002,700
91.901,5002,850
92.001,5003,000
92.101,5003,150
92.201,5003,300
92.301,5003,450
92.401,5003,600
92.501,5003,750
92.601,5003,900
92.701,5004,050
92.801,5004,200
92.901,5004,350
93.001,5004,500
93.101,5004,650
93.201,5004,800
93.301,5004,950
93.401,5005,100
93.501,5005,250
93.601,5005,400
93.701,5005,550
93.801,5005,700
93.901,5005,850
94.001,5006,000
94.101,5006,150
94.201,5006,300
94.301,5006,450
94.401,5006,600
94.501,5006,750
94.601,5006,900
94.701,5007,050
94.801,5007,200
94.901,5007,350
95.001,5007,500
95.101,5007,650
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
95.201,5007,800
95.301,5007,950
95.401,5008,100
95.501,5008,250
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NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 12/19/2025 tions LLC Page 392
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 6P: BIORENTION BASIN 2A Inflow Area = 18,731 sf, 0.00% Impervious, Inflow Depth = 2.87" for 100 YR-F event Inflow = 0.86 cfs @ 12.18 hrs, Volume= 4,475 cf Outflow = 0.86 cfs @ 12.19 hrs, Volume= 4,428 cf, Atten= 0%, Lag= 0.3 min Primary = 0.86 cfs @ 12.19 hrs, Volume= 4,428 cf Routed to Pond 33P : INFILTRATION BASIN 2 Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 95.56' @ 12.19 hrs Surf.Area= 243 sf Storage= 183 cf Plug-Flow detention time= 16.6 min calculated for 4,428 cf (99% of inflow) Center-of-Mass det. time= 10.7 min ( 910.6 - 899.8 )
VolumeInvertAvail.StorageStorage Description
#194.30'307 cfCustom Stage Data (Prismatic)Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
94.306300
95.001487474
96.00319234307
DeviceRoutingInvertOutlet Devices
#1Device 394.80'2.5" Vert. Orifice C= 0.600Limited to weir flow at low heads
#2Device 395.50'48.0" x 48.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads
#3Primary91.80'12.0" Round Culvert L= 30.0' RCP, groove end projecting, Ke= 0.200 Inlet / Outlet Invert= 91.80' / 91.65' S= 0.0050 ' /' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 0.79 sf
Primary OutFlow Max=0.86 cfs @ 12.19 hrs HW=95.56' TW=93.62' (Dynamic Tailwater) 3=Culvert (Passes 0.86 cfs of 6.20 cfs potential flow) 1=Orifice (Orifice Controls 0.13 cfs @ 3.89 fps) 2=Grate (Weir Controls 0.73 cfs @ 0.79 fps)
Image
Page 560 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 12/19/2025 tions LLC Page 393
Analysis - Proposed Conditions NOAA 24- Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 6P: BIORENTION BASIN 2A
Pond 6P: BIORENTION BASIN 2A
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Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 6P: BIORENTION BASIN 2A
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Analysis - Proposed Conditions NOAA 24- Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 6P: BIORENTION BASIN 2A
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Primary (cfs)
0.000.00094.300.00
2.000.00094.300.00
4.000.00094.300.00
6.000.00094.300.00
8.000.00094.300.00
10.000.00094.300.00
12.000.2712095.270.10
14.000.1216895.490.13
16.000.079095.100.07
18.000.057495.000.05
20.000.047094.970.04
22.000.046894.960.04
24.000.036594.940.03
26.000.004894.810.00
28.000.004794.800.00
30.000.004794.800.00
32.000.004794.800.00
34.000.004794.800.00
36.000.004794.800.00
38.000.004794.800.00
40.000.004794.800.00
42.000.004794.800.00
44.000.004794.800.00
46.000.004794.800.00
48.000.004794.800.00
50.000.004794.800.00
52.000.004794.800.00
54.000.004794.800.00
56.000.004794.800.00
58.000.004794.800.00
60.000.004794.800.00
62.000.004794.800.00
64.000.004794.800.00
66.000.004794.800.00
68.000.004794.800.00
70.000.004794.800.00
72.000.004794.800.00
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NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 12/19/2025 utions LLC Page 396
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LL
Stage-Discharge for Pond 6P: BIORENTION BASIN 2A
Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)
94.300.0094.820.0095.340.11
94.310.0094.830.0095.350.11
94.320.0094.840.0095.360.11
94.330.0094.850.0095.370.11
94.340.0094.860.0195.380.11
94.350.0094.870.0195.390.11
94.360.0094.880.0195.400.12
94.370.0094.890.0195.410.12
94.380.0094.900.0295.420.12
94.390.0094.910.0295.430.12
94.400.0094.920.0295.440.12
94.410.0094.930.0395.450.12
94.420.0094.940.0395.460.12
94.430.0094.950.0395.470.12
94.440.0094.960.0495.480.12
94.450.0094.970.0495.490.13
94.460.0094.980.0595.500.13
94.470.0094.990.0595.510.18
94.480.0095.000.0595.520.28
94.490.0095.010.0595.530.40
94.500.0095.020.0695.540.55
94.510.0095.030.0695.550.72
94.520.0095.040.0695.560.90
94.530.0095.050.0695.571.10
94.540.0095.060.0695.581.32
94.550.0095.070.0795.591.55
94.560.0095.080.0795.601.79
94.570.0095.090.0795.612.05
94.580.0095.100.0795.622.31
94.590.0095.110.0795.632.59
94.600.0095.120.0895.642.88
94.610.0095.130.0895.653.18
94.620.0095.140.0895.663.49
94.630.0095.150.0895.673.81
94.640.0095.160.0895.684.14
94.650.0095.170.0895.694.48
94.660.0095.180.0995.704.83
94.670.0095.190.0995.715.18
94.680.0095.200.0995.725.55
94.690.0095.210.0995.735.92
94.700.0095.220.0995.746.30
94.710.0095.230.0995.756.69
94.720.0095.240.1095.767.09
94.730.0095.250.1095.777.49
94.740.0095.260.1095.787.88
94.750.0095.270.1095.797.89
94.760.0095.280.1095.807.90
94.770.0095.290.1095.817.92
94.780.0095.300.1095.827.93
94.790.0095.310.1095.837.94
94.800.0095.320.1195.847.95
94.810.0095.330.1195.857.97
Elevation (feet)Primary (cfs)
95.867.98
95.877.99
95.888.00
95.898.02
95.908.03
95.918.04
95.928.05
95.938.07
95.948.08
95.958.09
95.968.10
95.978.12
95.988.13
95.998.14
96.008.15
Page 564 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 12/19/2025
YR-F Rainfall=11.41" Printed 12/19/2025 Page 397
Analysis - Proposed Conditions NOAA 24 Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Area-Storage for Pond 6P: BIORENTION BASIN 2A
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
94.3063095.34206134
94.3265195.36210138
94.3468395.38213142
94.3670495.40216147
94.3873595.42220151
94.4075795.44223156
94.4278895.46227160
94.44801095.48230165
94.46821295.50234169
94.48851395.52237174
94.50871595.54240179
94.52901795.56244184
94.54921995.58247188
94.56952095.60251193
94.58972295.62254198
94.60992495.64257204
94.621022695.66261209
94.641042895.68264214
94.661073195.70268219
94.681093395.72271225
94.701123595.74275230
94.721143795.76278236
94.741163995.78281241
94.761194295.80285247
94.781214495.82288253
94.801244795.84292258
94.821264995.86295264
94.841295295.88298270
94.861315495.90302276
94.881335795.92305282
94.901366095.94309289
94.921386295.96312295
94.941416595.98316301
94.961436896.00319307
94.9814671
95.0014874
95.0215177
95.0415580
95.0615883
95.0816286
95.1016590
95.1216993
95.1417296
95.16175100
95.18179103
95.20182107
95.22186111
95.24189114
95.26192118
95.28196122
95.30199126
95.32203130
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NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 12/19/2025 tions LLC Page 398
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
VolumeInvertAvail.StorageStorage Description
#190.75'4,888 cfCustom Stage Data (Prismatic) Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
90.751,15000
95.001,1504,8884,888
DeviceRoutingInvertOutlet Devices
#1Device 392.75'2.5" Vert. Orifice C = 0.600 Limited to weir flow at low heads
#2Device 394.50'48.0" ร— 48.0" Horiz. Grate C = 0.600 Limited to weir flow at low heads
#3Primary92.75'12.0" Round Culvert L = 7.0' RCP, groove end projecting, Ke=0.200 Inlet / Outlet Invert= $ 92.75'/92.65' $ S = 0.0143'/ Cc = 0.900 n=0.012 Concrete pipe, finished, Flow Area=0.79 sf
#4Discarded90.75'10.000 in/hr Exfiltration over Surface area Phase-In= $ 0.01' $
Discarded OutFlow Max=0.27 cfs @ 11.80 hrs HW=90.79' (Free Discharge)
4=Exfiltration (Exfiltration Controls 0.27 cfs)
Primary OutFlow Max=0.20 cfs @ 13.39 hrs HW=94.40' TW=0.00' (Dynamic Tailwater)
3=Culvert (Passes 0.20 cfs of 4.64 cfs potential flow)
1=Orifice (Orifice Controls 0.20 cfs @ 5.99 fps)
2=Grate ( Controls 0.00 cfs)
Qriffied
Exfiltration
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NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 12/19/2025 utions LLC Page 399
Analysis - Proposed Conditions NOAA 24 Prepared by Civil Core Consulting HydroCAD\circledR 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 8P: INFILTRATION BASIN 3
Pond 8P: INFILTRATION BASIN 3
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Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 12/19/2025 utions LLC Page 400
Pond 8P: INFILTRATION BASIN 3
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Analysis - Proposed ConditionsNOAA 24-hr D100 YR-F Rainfall=11.41"
Prepared by Civil Core ConsultingPrinted12/19/2025
HydroCAD\textregistered 10.20-8a s/n 13637\circledR 2025 HydroCAD Software Solutions LLCPage 401
Hydrograph for Pond 8P: INFILTRATION BASIN 3
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Outflow (cfs)Discarded (cfs)Primary (cfs)
0.000.00090.750.000.000.00
2.000.01090.750.010.010.00
4.000.03190.750.030.030.00
6.000.04290.750.040.040.00
8.000.05290.750.050.050.00
10.000.07390.750.070.070.00
12.001.0032491.030.270.270.00
14.000.334,01994.240.460.270.19
16.000.222,92193.290.370.270.11
18.000.172,14392.610.270.270.00
20.000.121,24391.830.270.270.00
22.000.108390.820.270.270.00
24.000.08390.750.080.080.00
26.000.01090.750.010.010.00
28.000.00090.750.000.000.00
30.000.00090.750.000.000.00
32.000.00090.750.000.000.00
34.000.00090.750.000.000.00
36.000.00090.750.000.000.00
38.000.00090.750.000.000.00
40.000.00090.750.000.000.00
42.000.00090.750.000.000.00
44.000.00090.750.000.000.00
46.000.00090.750.000.000.00
48.000.00090.750.000.000.00
50.000.00090.750.000.000.00
52.000.00090.750.000.000.00
54.000.00090.750.000.000.00
56.000.00090.750.000.000.00
58.000.00090.750.000.000.00
60.000.00090.750.000.000.00
62.000.00090.750.000.000.00
64.000.00090.750.000.000.00
66.000.00090.750.000.000.00
68.000.00090.750.000.000.00
70.000.00090.750.000.000.00
72.000.00090.750.000.000.00
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NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 12/19/2025 utions LLC Page 402
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LL
Stage-Discharge for Pond 8P: INFILTRATION BASIN 3
Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)
90.750.000.000.0093.350.380.270.12
90.800.270.270.0093.400.390.270.12
90.850.270.270.0093.450.390.270.13
90.900.270.270.0093.500.400.270.13
90.950.270.270.0093.550.400.270.14
91.000.270.270.0093.600.410.270.14
91.050.270.270.0093.650.410.270.15
91.100.270.270.0093.700.420.270.15
91.150.270.270.0093.750.420.270.16
91.200.270.270.0093.800.430.270.16
91.250.270.270.0093.850.430.270.16
91.300.270.270.0093.900.430.270.17
91.350.270.270.0093.950.440.270.17
91.400.270.270.0094.000.440.270.18
91.450.270.270.0094.050.450.270.18
91.500.270.270.0094.100.450.270.18
91.550.270.270.0094.150.450.270.19
91.600.270.270.0094.200.460.270.19
91.650.270.270.0094.250.460.270.19
91.700.270.270.0094.300.460.270.20
91.750.270.270.0094.350.470.270.20
91.800.270.270.0094.400.470.270.20
91.850.270.270.0094.450.470.270.21
91.900.270.270.0094.500.480.270.21
91.950.270.270.0094.551.060.270.80
92.000.270.270.0094.602.140.271.87
92.050.270.270.0094.653.530.273.26
92.100.270.270.0094.705.170.274.90
92.150.270.270.0094.755.880.275.61
92.200.270.270.0094.806.000.275.74
92.250.270.270.0094.856.130.275.86
92.300.270.270.0094.906.250.275.98
92.350.270.270.0094.956.370.276.10
92.400.270.270.0095.006.480.276.22
92.450.270.270.00
92.500.270.270.00
92.550.270.270.00
92.600.270.270.00
92.650.270.270.00
92.700.270.270.00
92.750.270.270.00
92.800.270.270.00
92.850.280.270.02
92.900.300.270.03
92.950.320.270.05
93.000.330.270.06
93.050.340.270.07
93.100.350.270.08
93.150.360.270.09
93.200.360.270.10
93.250.370.270.10
93.300.380.270.11
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Analysis - Proposed ConditionsNOAA 24-hr D100 YR-F Rainfall=11.41"
Prepared by Civil Core ConsultingPrinted 12/19/2025
HydroCAD\textregistered 10.20-8a s/n 13637\circledR 2025 HydroCAD Software Solutions LLCPage 403
Stage-Area-Storage for Pond 8P: INFILTRATION BASIN 3
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
90.751,150093.351,1502,990
90.801,1505793.401,1503,048
90.851,15011593.451,1503,105
90.901,15017393.501,1503,163
90.951,15023093.551,1503,220
91.001,15028893.601,1503,277
91.051,15034593.651,1503,335
91.101,15040293.701,1503,393
91.151,15046093.751,1503,450
91.201,15051893.801,1503,507
91.251,15057593.851,1503,565
91.301,15063293.901,1503,623
91.351,15069093.951,1503,680
91.401,15074894.001,1503,738
91.451,15080594.051,1503,795
91.501,15086394.101,1503,852
91.551,15092094.151,1503,910
91.601,15097794.201,1503,968
91.651,1501,03594.251,1504,025
91.701,1501,09394.301,1504,082
91.751,1501,15094.351,1504,140
91.801,1501,20794.401,1504,198
91.851,1501,26594.451,1504,255
91.901,1501,32394.501,1504,313
91.951,1501,38094.551,1504,370
92.001,1501,43894.601,1504,427
92.051,1501,49594.651,1504,485
92.101,1501,55294.701,1504,543
92.151,1501,61094.751,1504,600
92.201,1501,66894.801,1504,657
92.251,1501,72594.851,1504,715
92.301,1501,78294.901,1504,773
92.351,1501,84094.951,1504,830
92.401,1501,89895.001,1504,888
92.451,1501,955
92.501,1502,013
92.551,1502,070
92.601,1502,127
92.651,1502,185
92.701,1502,243
92.751,1502,300
92.801,1502,357
92.851,1502,415
92.901,1502,473
92.951,1502,530
93.001,1502,588
93.051,1502,645
93.101,1502,702
93.151,1502,760
93.201,1502,818
93.251,1502,875
93.301,1502,932
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NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 12/19/2025 tions LLC Page 404
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 10P: PERVIOUS PAVEMENT 2B
Inflow Area = 8,276 sf, 100.00% Impervious, Inflow Depth = 11.17" for 100 YR-F event Inflow = 1.89 cfs @ 12.12 hrs, Volume= 7,703 cf Outflow = 1.76 cfs @ 12.15 hrs, Volume= 7,699 cf, Atten= 7%, Lag= 1.5 min Primary = 1.76 cfs @ 12.15 hrs, Volume= 7,699 cf Routed to Pond 33P : INFILTRATION BASIN 2 Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 94.90' @ 12.15 hrs Surf.Area= 9,225 sf Storage= 1,145 cf Plug-Flow detention time= 71.3 min calculated for 7,699 cf (100% of inflow) Center-of-Mass det. time= 70.9 min ( 809.8 - 738.9 )
VolumeInvertAvail.StorageStorage Description
#193.80'615 cfStone Storage Bed (Prismatic)Listed below (Recalc) 1,538 cf Overall ร— 40.0% Voids
#294.30'231 cfSurface and Base Course (Prismatic)Listed below (Recalc) 1,538 cf Overall ร— 15.0% Voids
#394.80'1,538 cfSurface (Prismatic)Listed below (Recalc)
2,383 cfTotal Available Storage
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
93.803,07500
94.303,0751,5381,538
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
94.303,07500
94.803,0751,5381,538
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
94.803,07500
95.303,0751,5381,538
DeviceRoutingInvertOutlet Devices
#1Device 393.80'2.5" Vert. Orifice C = 0.600
#2Device 394.80'48.0" x 48.0" Horiz. Grate C = 0.600
#3Primary92.08'12.0" Round Culvert L = 38.0' RCP, groove end projecting, Ke = 0.200Inlet / Outlet Invert= $ 92.08'/91.65' $ S = 0.0113'/' Cc = 0.900n=0.011, Flow Area=0.79 sf
Primary OutFlow Max=1.75 cfs @ 12.15 hrs HW=94.90' TW=93.36' (Dynamic Tailwater) 3=Culvert (Passes 1.75 cfs of 5.46 cfs potential flow) 1=Orifice (Orifice Controls 0.16 cfs @ 4.80 fps) 2=Grate (Weir Controls 1.59 cfs @ 1.02 fps)
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Analysis - Proposed Conditions NOAA 24 Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 10P: PERVIOUS PAVEMENT 2B
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Analysis - Proposed Conditions NOAA 24- Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 10P: PERVIOUS PAVEMENT 2B
Pond 10P: PERVIOUS PAVEMENT 2B
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Analysis - Proposed Conditions NOAA 24- Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 10P: PERVIOUS PAVEMENT 2B
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Primary (cfs)
0.000.00093.800.00
2.000.026893.860.01
4.000.0314893.920.02
6.000.0418193.950.03
8.000.0622993.990.05
10.000.1034294.080.07
12.001.081,02394.860.88
14.000.1187094.810.12
16.000.0667894.440.10
18.000.0438594.110.08
20.000.0322293.980.05
22.000.0317793.940.03
24.000.0215793.930.03
26.000.006993.860.01
28.000.004293.830.00
30.000.003093.820.00
32.000.002393.820.00
34.000.001993.820.00
36.000.001693.810.00
38.000.001493.810.00
40.000.001293.810.00
42.000.001193.810.00
44.000.001093.810.00
46.000.00993.810.00
48.000.00893.810.00
50.000.00893.810.00
52.000.00793.810.00
54.000.00793.810.00
56.000.00693.810.00
58.000.00693.800.00
60.000.00693.800.00
62.000.00593.800.00
64.000.00593.800.00
66.000.00593.800.00
68.000.00593.800.00
70.000.00493.800.00
72.000.00493.800.00
Page 575 Download HTML
Analysis - Proposed Conditions NOAA 24-hr D 100 YR-F Rainfall=11.41" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 408
Stage-Discharge for Pond 10P: PERVIOUS PAVEMENT 2B
Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)
93.800.0094.320.1194.840.58
93.810.0094.330.1194.850.74
93.820.0094.340.1194.860.93
93.830.0094.350.1194.871.13
93.840.0094.360.1194.881.35
93.850.0094.370.1194.891.58
93.860.0194.380.1194.901.82
93.870.0194.390.1194.912.07
93.880.0194.400.1294.922.34
93.890.0194.410.1294.932.62
93.900.0294.420.1294.942.91
93.910.0294.430.1294.953.21
93.920.0294.440.1294.963.52
93.930.0394.450.1294.973.84
93.940.0394.460.1294.984.17
93.950.0394.470.1294.994.50
93.960.0494.480.1295.004.85
93.970.0494.490.1395.015.21
93.980.0594.500.1395.025.57
93.990.0594.510.1395.035.95
94.000.0594.520.1395.046.33
94.010.0594.530.1395.056.72
94.020.0694.540.1395.066.83
94.030.0694.550.1395.076.84
94.040.0694.560.1395.086.86
94.050.0694.570.1395.096.87
94.060.0694.580.1395.106.88
94.070.0794.590.1495.116.90
94.080.0794.600.1495.126.91
94.090.0794.610.1495.136.93
94.100.0794.620.1495.146.94
94.110.0794.630.1495.156.95
94.120.0894.640.1495.166.97
94.130.0894.650.1495.176.98
94.140.0894.660.1495.186.99
94.150.0894.670.1495.197.01
94.160.0894.680.1495.207.02
94.170.0894.690.1595.217.04
94.180.0994.700.1595.227.05
94.190.0994.710.1595.237.06
94.200.0994.720.1595.247.08
94.210.0994.730.1595.257.09
94.220.0994.740.1595.267.10
94.230.0994.750.1595.277.12
94.240.1094.760.1595.287.13
94.250.1094.770.1595.297.15
94.260.1094.780.1595.307.16
94.270.1094.790.15
94.280.1094.800.16
94.290.1094.810.21
94.300.1094.820.31
94.310.1094.830.43
Page 576 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 12/19/2025
Analysis - Proposed Conditions NOAA 24 Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Printed 12/19/2025 Page 409
Stage-Area-Storage for Pond 10P: PERVIOUS PAVEMENT 2B
Elevation (feet)Storage (cubic-feet)Elevation (feet)Storage (cubic-feet)Elevation (feet)Storage (cubic-feet)
93.80094.3262494.84969
93.811294.3362994.85999
93.822594.3463394.861,030
93.833794.3563894.871,061
93.844994.3664394.881,092
93.856194.3764794.891,122
93.867494.3865294.901,153
93.878694.3965794.911,184
93.889894.4066194.921,215
93.8911194.4166694.931,245
93.9012394.4267094.941,276
93.9113594.4367594.951,307
93.9214894.4468094.961,338
93.9316094.4568494.971,368
93.9417294.4668994.981,399
93.9518594.4769394.991,430
93.9619794.4869895.001,461
93.9720994.4970395.011,491
93.9822194.5070795.021,522
93.9923494.5171295.031,553
94.0024694.5271695.041,584
94.0125894.5372195.051,614
94.0227194.5472695.061,645
94.0328394.5573095.071,676
94.0429594.5673595.081,707
94.0530894.5774095.091,737
94.0632094.5874495.101,768
94.0733294.5974995.111,799
94.0834494.6075395.121,830
94.0935794.6175895.131,860
94.1036994.6276395.141,891
94.1138194.6376795.151,922
94.1239494.6477295.161,953
94.1340694.6577695.171,983
94.1441894.6678195.182,014
94.1543094.6778695.192,045
94.1644394.6879095.202,076
94.1745594.6979595.212,106
94.1846794.7080095.222,137
94.1948094.7180495.232,168
94.2049294.7280995.242,199
94.2150494.7381395.252,229
94.2251794.7481895.262,260
94.2352994.7582395.272,291
94.2454194.7682795.282,322
94.2555494.7783295.292,352
94.2656694.7883695.302,383
94.2757894.79841
94.2859094.80846
94.2960394.81876
94.3061594.82907
94.3162094.83938
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NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 12/19/2025 tions LLC Page 410
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 15P: PERVIOUS PAVEMENT 3B
Inflow Area = 8,712 sf,100.00% Impervious, Inflow Depth = 11.17" for 100 YR-F event Inflow = 1.98 cfs @ 12.12 hrs, Volume= 8,108 cf Outflow = 1.86 cfs @ 12.15 hrs, Volume= 8,105 cf, Atten= 6%, Lag= 1.5 min Primary = 1.86 cfs @ 12.15 hrs, Volume= 8,105 cf Routed to Pond 8P : INFILTRATION BASIN 3 Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 94.90' @ 12.15 hrs Surf.Area= 8,889 sf Storage= 1,116 cf Plug-Flow detention time= 62.9 min calculated for 8,103 cf (100% of inflow) Center-of-Mass det. time= 62.9 min ( 801.8 - 738.9 )
VolumeInvertAvail.StorageStorage Description
#193.80'593 cfStone Storage Bed (Prismatic)Listed below (Recalc) 1,482 cf Overall ร— 40.0% Voids
#294.30'222 cfSurface and Base Course (Prismatic)Listed below (Recalc) 1,482 cf Overall ร— 15.0% Voids
#394.80'1,482 cfSurface (Prismatic)Listed below (Recalc) 2,296 cfTotal Available Storage
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
93.802,96300
94.302,9631,4821,482
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
94.302,96300
94.802,9631,4821,482
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
94.802,96300
95.302,9631,4821,482
DeviceRoutingInvertOutlet Devices
#1Device 393.80'2.5" Vert. Orifice C = 0.600
#2Device 394.80'48.0" x 48.0" Horiz. Grate C = 0.600
#3Primary92.00'12.0" Round Culvert L = 52.0' RCP, groove end projecting, Ke = 0.200Inlet / Outlet Invert= $ 92.00'/90.75' $ S = 0.0240'/ Cc = 0.900n=0.011, Flow Area=0.79 sf
Primary OutFlow Max=1.86 cfs @ 12.15 hrs HW=94.90' TW=91.59' (Dynamic Tailwater) 3=Culvert (Passes 1.86 cfs of 7.27 cfs potential flow) 1=Orifice (Orifice Controls 0.16 cfs @ 4.81 fps) 2=Grate (Weir Controls 1.69 cfs @ 1.04 fps)
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Analysis - Proposed Conditions NOAA 24-1 Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 15P: PERVIOUS PAVEMENT 3B
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Analysis - Proposed Conditions NOAA 24-1 Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 15P: PERVIOUS PAVEMENT 3B
Pond 15P: PERVIOUS PAVEMENT 3B
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NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 12/19/2025
Analysis - Proposed Conditions NOAA 24- Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 15P: PERVIOUS PAVEMENT 3B
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Primary (cfs)
0.000.00093.800.00
2.000.027193.860.01
4.000.0314993.930.03
6.000.0418193.950.04
8.000.0623193.990.05
10.000.1035194.100.07
12.001.1499594.860.94
14.000.1182194.800.13
16.000.0653994.250.10
18.000.0432294.070.07
20.000.0420793.970.04
22.000.0317493.950.03
24.000.0315593.930.03
26.000.006693.860.01
28.000.004093.830.00
30.000.002893.820.00
32.000.002293.820.00
34.000.001893.820.00
36.000.001593.810.00
38.000.001393.810.00
40.000.001193.810.00
42.000.001093.810.00
44.000.00993.810.00
46.000.00893.810.00
48.000.00893.810.00
50.000.00793.810.00
52.000.00793.810.00
54.000.00693.810.00
56.000.00693.800.00
58.000.00593.800.00
60.000.00593.800.00
62.000.00593.800.00
64.000.00593.800.00
66.000.00493.800.00
68.000.00493.800.00
70.000.00493.800.00
72.000.00493.800.00
Page 413
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NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 12/19/2025
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 414
Stage-Discharge for Pond 15P: PERVIOUS PAVEMENT 3B
Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)
93.800.0094.320.1194.840.58
93.810.0094.330.1194.850.74
93.820.0094.340.1194.860.93
93.830.0094.350.1194.871.13
93.840.0094.360.1194.881.35
93.850.0094.370.1194.891.58
93.860.0194.380.1194.901.82
93.870.0194.390.1194.912.07
93.880.0194.400.1294.922.34
93.890.0194.410.1294.932.62
93.900.0294.420.1294.942.91
93.910.0294.430.1294.953.21
93.920.0294.440.1294.963.52
93.930.0394.450.1294.973.84
93.940.0394.460.1294.984.17
93.950.0394.470.1294.994.50
93.960.0494.480.1295.004.85
93.970.0494.490.1395.015.21
93.980.0594.500.1395.025.57
93.990.0594.510.1395.035.95
94.000.0594.520.1395.046.33
94.010.0594.530.1395.056.72
94.020.0694.540.1395.067.11
94.030.0694.550.1395.077.46
94.040.0694.560.1395.087.47
94.050.0694.570.1395.097.48
94.060.0694.580.1395.107.50
94.070.0794.590.1495.117.51
94.080.0794.600.1495.127.52
94.090.0794.610.1495.137.53
94.100.0794.620.1495.147.54
94.110.0794.630.1495.157.55
94.120.0894.640.1495.167.56
94.130.0894.650.1495.177.57
94.140.0894.660.1495.187.58
94.150.0894.670.1495.197.60
94.160.0894.680.1495.207.61
94.170.0894.690.1595.217.62
94.180.0994.700.1595.227.63
94.190.0994.710.1595.237.64
94.200.0994.720.1595.247.65
94.210.0994.730.1595.257.66
94.220.0994.740.1595.267.67
94.230.0994.750.1595.277.68
94.240.1094.760.1595.287.69
94.250.1094.770.1595.297.70
94.260.1094.780.1595.307.72
94.270.1094.790.15
94.280.1094.800.16
94.290.1094.810.21
94.300.1094.820.31
94.310.1094.830.43
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NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 12/19/2025
0 YR-F Rainfall=11.41" Printed 12/19/2025 Page 415
Analysis - Proposed Conditions NOAA 24 Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Area-Storage for Pond 15P: PERVIOUS PAVEMENT 3B
Elevation (feet)Storage (cubic-feet)Elevation (feet)Storage (cubic-feet)Elevation (feet)Storage (cubic-feet)
93.80094.3260194.84933
93.811294.3360694.85963
93.822494.3461094.86993
93.833694.3561594.871,022
93.844794.3661994.881,052
93.855994.3762494.891,081
93.867194.3862894.901,111
93.878394.3963394.911,141
93.889594.4063794.921,170
93.8910794.4164194.931,200
93.9011994.4264694.941,230
93.9113094.4365094.951,259
93.9214294.4465594.961,289
93.9315494.4565994.971,319
93.9416694.4666494.981,348
93.9517894.4766894.991,378
93.9619094.4867395.001,407
93.9720194.4967795.011,437
93.9821394.5068195.021,467
93.9922594.5168695.031,496
94.0023794.5269095.041,526
94.0124994.5369595.051,556
94.0226194.5469995.061,585
94.0327394.5570495.071,615
94.0428494.5670895.081,644
94.0529694.5771395.091,674
94.0630894.5871795.101,704
94.0732094.5972195.111,733
94.0833294.6072695.121,763
94.0934494.6173095.131,793
94.1035694.6273595.141,822
94.1136794.6373995.151,852
94.1237994.6474495.161,882
94.1339194.6574895.171,911
94.1440394.6675395.181,941
94.1541594.6775795.191,970
94.1642794.6876195.202,000
94.1743994.6976695.212,030
94.1845094.7077095.222,059
94.1946294.7177595.232,089
94.2047494.7277995.242,119
94.2148694.7378495.252,148
94.2249894.7478895.262,178
94.2351094.7579395.272,207
94.2452194.7679795.282,237
94.2553394.7780195.292,267
94.2654594.7880695.302,296
94.2755794.79810
94.2856994.80815
94.2958194.81844
94.3059394.82874
94.3159794.83904
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NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 12/19/2025 tions LLC Page 416
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 33P: INFILTRATION BASIN 2
Inflow Area = 27,007 sf, 30.65% Impervious, Inflow Depth = 5.39" for 100 YR-F event
Inflow = 2.57 cfs @ 12.16 hrs, Volume= 12,127 cf
Outflow = 0.48 cfs @ 12.98 hrs, Volume= 12,127 cf, Atten= 81%, Lag= 49.4 min
Discarded = 0.24 cfs @ 12.98 hrs, Volume= 9,837 cf
Primary = 0.25 cfs @ 12.98 hrs, Volume= 2,290 cf
Routed to Link 33L : POA 2
Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs
Peak Elev= 94.71' @ 12.98 hrs Surf.Area= 2,072 sf Storage= 3,760 cf
Plug-Flow detention time= 131.3 min calculated for 12,126 cf (100% of inflow)
Center-of-Mass det. time= 131.3 min ( 977.9 - 846.6 )
VolumeInvertAvail.StorageStorage Description
#191.65'4,378 cfCustom Stage Data (Prismatic)Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
91.6552000
92.00651205205
93.001,0948731,077
94.001,6291,3622,439
95.002,2491,9394,378
DeviceRoutingInvertOutlet Devices
#1Device 393.65'2.5" Vert. Orifice C= 0.600 Limited to weir flow at low heads
#2Device 394.70'48.0" x 48.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads
#3Primary93.65'12.0" Round Culvert L= 17.0' RCP, groove end projecting, Ke= 0.200 Inlet / Outlet Invert= 93.65' / 93.50' S= 0.0088 '/ Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 0.79 sf
#4Discarded91.65'4.950 in/hr Exfiltration over Surface area Phase-In= 0.01'
Discarded OutFlow Max=0.24 cfs @ 12.98 hrs HW=94.71' (Free Discharge) 4=Exfiltration (Exfiltration Controls 0.24 cfs)
Primary OutFlow Max=0.25 cfs @ 12.98 hrs HW=94.71' TW=0.00' (Dynamic Tailwater) 3=Culvert (Passes 0.25 cfs of 2.79 cfs potential flow) 1=Orifice (Orifice Controls 0.16 cfs @ 4.72 fps) 2=Grate (Weir Controls 0.09 cfs @ 0.39 fps)
Pond 33P: INFILTRATION BASIN 2
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Analysis - Proposed Conditions NOAA 24 Prepared by Civil Core Consulting HydroCAD\circledR 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 33P: INFILTRATION BASIN 2
Pond 33P: INFILTRATION BASIN 2
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Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 33P: INFILTRATION BASIN 2
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Analysis - Proposed ConditionsNOAA 24-hr D100 YR-F Rainfall=11.41"
Prepared by Civil Core ConsultingPrinted12/19/2025
HydroCAD\textregistered 10.20-8a s/n 13637\circledR 2025 HydroCAD Software Solutions LLCPage 419
Hydrograph for Pond 33P: INFILTRATION BASIN 2
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Outflow (cfs)Discarded (cfs)Primary (cfs)
0.000.00091.650.000.000.00
2.000.01091.650.010.010.00
4.000.02291.650.020.020.00
6.000.03391.660.030.030.00
8.000.05491.660.050.050.00
10.000.071391.670.060.060.00
12.000.9865792.580.100.100.00
14.000.243,48094.580.380.230.15
16.000.172,55894.070.280.190.09
18.000.131,99793.720.180.170.01
20.000.091,58693.420.150.150.00
22.000.071,13793.050.130.130.00
24.000.0674492.670.110.110.00
26.000.0121292.010.080.080.00
28.000.00091.650.000.000.00
30.000.00091.650.000.000.00
32.000.00091.650.000.000.00
34.000.00091.650.000.000.00
36.000.00091.650.000.000.00
38.000.00091.650.000.000.00
40.000.00091.650.000.000.00
42.000.00091.650.000.000.00
44.000.00091.650.000.000.00
46.000.00091.650.000.000.00
48.000.00091.650.000.000.00
50.000.00091.650.000.000.00
52.000.00091.650.000.000.00
54.000.00091.650.000.000.00
56.000.00091.650.000.000.00
58.000.00091.650.000.000.00
60.000.00091.650.000.000.00
62.000.00091.650.000.000.00
64.000.00091.650.000.000.00
66.000.00091.650.000.000.00
68.000.00091.650.000.000.00
70.000.00091.650.000.000.00
72.000.00091.650.000.000.00
Page 587 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 12/19/2025 utions LLC Page 420
Analysis - Proposed Conditions NOAA 24- Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 33P: INFILTRATION BASIN 2
Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)
91.650.000.000.0094.250.320.200.12
91.700.060.060.0094.300.330.210.12
91.750.060.060.0094.350.340.210.13
91.800.070.070.0094.400.350.220.13
91.850.070.070.0094.450.360.220.14
91.900.070.070.0094.500.360.220.14
91.950.070.070.0094.550.370.230.15
92.000.070.070.0094.600.380.230.15
92.050.080.080.0094.650.390.230.16
92.100.080.080.0094.700.400.240.16
92.150.080.080.0094.750.990.240.75
92.200.080.080.0094.802.070.241.82
92.250.090.090.0094.853.460.253.21
92.300.090.090.0094.903.580.253.33
92.350.090.090.0094.953.670.253.41
92.400.090.090.0095.003.720.263.46
92.450.100.100.00
92.500.100.100.00
92.550.100.100.00
92.600.110.110.00
92.650.110.110.00
92.700.110.110.00
92.750.110.110.00
92.800.120.120.00
92.850.120.120.00
92.900.120.120.00
92.950.120.120.00
93.000.130.130.00
93.050.130.130.00
93.100.130.130.00
93.150.130.130.00
93.200.140.140.00
93.250.140.140.00
93.300.140.140.00
93.350.150.150.00
93.400.150.150.00
93.450.150.150.00
93.500.160.160.00
93.550.160.160.00
93.600.160.160.00
93.650.170.170.00
93.700.170.170.00
93.750.190.170.02
93.800.210.170.03
93.850.230.180.05
93.900.240.180.06
93.950.260.180.07
94.000.270.190.08
94.050.280.190.09
94.100.290.190.10
94.150.300.200.10
94.200.310.200.11
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'R-F Rainfall=11.41" Printed 12/19/2025 Page 421
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 12/19/2025
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Area-Storage for Pond 33P: INFILTRATION BASIN 2
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
91.655200
91.7053926
91.7555754
91.8057682
91.85595111
91.90614142
91.95632173
92.00651205
92.05673238
92.10695272
92.15717308
92.20740344
92.25762382
92.30784420
92.35806460
92.40828501
92.45850543
92.50873586
92.55895630
92.60917675
92.65939722
92.70961769
92.75983818
92.801,005867
92.851,028918
92.901,050970
92.951,0721,023
93.001,0941,077
93.051,1211,133
93.101,1481,190
93.151,1741,248
93.201,2011,307
93.251,2281,368
93.301,2551,430
93.351,2811,493
93.401,3081,558
93.451,3351,624
93.501,3621,691
93.551,3881,760
93.601,4151,830
93.651,4421,902
93.701,4691,974
93.751,4952,048
93.801,5222,124
93.851,5492,201
93.901,5762,279
93.951,6022,358
94.001,6292,439
94.051,6602,521
94.101,6912,605
94.151,7222,690
94.201,7532,777
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
94.251,7842,866
94.301,8152,956
94.351,8463,047
94.401,8773,140
94.451,9083,235
94.501,9393,331
94.551,9703,429
94.602,0013,528
94.652,0323,629
94.702,0633,731
94.752,0943,835
94.802,1253,941
94.852,1564,048
94.902,1874,156
94.952,2184,266
95.002,2494,378
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NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 12/19/2025 tions LLC Page 422
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 42P: BIORENTION BASIN 3A
Inflow Area = 29,621 sf, 0.00% Impervious, Inflow Depth = 2.87" for 100 YR-F event
Inflow = 1.18 cfs @ 12.22 hrs, Volume= 7,077 cf
Outflow = 1.17 cfs @ 12.25 hrs, Volume= 6,978 cf, Atten= 1%, Lag= 1.3 min
Primary = 1.17 cfs @ 12.25 hrs, Volume= 6,978 cf
Routed to Pond 8P : INFIL TRATION BASIN 3
Routed to Pond 8P : INFILTRATION BASIN 3
Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 94.57' @ 12.25 hrs Surf.Area= 934 sf Storage= 560 cf Plug-Flow detention time= 36.9 min calculated for 6,978 cf (99% of inflow) Center-of-Mass det. time= 29.2 min ( 933.3 - 904.2 )
VolumeInvertAvail.StorageStorage Description
#193.30'1,041 cfCustom Stage Data (Prismatic)Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
93.307700
94.00417173173
95.001,3198681,041
DeviceRoutingInvertOutlet Devices
#1Device 393.80'2.5" Vert. Orifice C= 0.600 Limited to weir flow at low heads
#2Device 394.50'48.0" x 48.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads
#3Primary90.80'12.0" Round Culvert L= 11.0' RCP, groove end projecting, Ke= 0.200 Inlet / Outlet Invert= 90.80' / 90.75' S= 0.0045 ' /' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 0.79 sf
Primary OutFlow Max=1.17 cfs @ 12.25 hrs HW=94.57' TW=92.26' (Dynamic Tailwater) 3=Culvert (Passes 1.17 cfs of 7.18 cfs potential flow) 1=Orifice (Orifice Controls 0.13 cfs @ 3.94 fps) 2=Grate (Weir Controls 1.03 cfs @ 0.88 fps)
Page 590 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 12/19/2025 tions LLC Page 423
Analysis - Proposed Conditions NOAA 24 Prepared by Civil Core Consulting HydroCAD\circledR 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 42P: BIORENTION BASIN 3A
Pond 42P: BIORENTION BASIN 3A
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NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 12/19/2025 tions LLC Page 424
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 42P: BIORENTION BASIN 3A
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NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 12/19/2025
YR-F Rainfall=11.41" Printed 12/19/2025 Page 425
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 42P: BIORENTION BASIN 3A
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Primary (cfs)
0.000.00093.300.00
2.000.00093.300.00
4.000.00093.300.00
6.000.00093.300.00
8.000.00093.300.00
10.000.00093.300.00
12.000.3218494.030.06
14.000.2050994.520.20
16.000.1147494.480.12
18.000.0833694.300.10
20.000.0722494.110.07
22.000.0619394.050.06
24.000.0517594.010.05
26.000.0010893.830.00
28.000.0010393.810.00
30.000.0010293.810.00
32.000.0010193.810.00
34.000.0010193.800.00
36.000.0010093.800.00
38.000.0010093.800.00
40.000.0010093.800.00
42.000.0010093.800.00
44.000.0010093.800.00
46.000.0010093.800.00
48.000.0010093.800.00
50.000.0010093.800.00
52.000.0010093.800.00
54.000.0010093.800.00
56.000.0010093.800.00
58.000.0010093.800.00
60.000.0010093.800.00
62.000.0010093.800.00
64.000.0010093.800.00
66.000.0010093.800.00
68.000.0010093.800.00
70.000.0010093.800.00
72.000.0010093.800.00
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LL
Stage-Discharge for Pond 42P: BIORENTION BASIN 3A
Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)
93.300.0093.820.0094.340.11
93.310.0093.830.0094.350.11
93.320.0093.840.0094.360.11
93.330.0093.850.0094.370.11
93.340.0093.860.0194.380.11
93.350.0093.870.0194.390.11
93.360.0093.880.0194.400.12
93.370.0093.890.0194.410.12
93.380.0093.900.0294.420.12
93.390.0093.910.0294.430.12
93.400.0093.920.0294.440.12
93.410.0093.930.0394.450.12
93.420.0093.940.0394.460.12
93.430.0093.950.0394.470.12
93.440.0093.960.0494.480.12
93.450.0093.970.0494.490.13
93.460.0093.980.0594.500.13
93.470.0093.990.0594.510.18
93.480.0094.000.0594.520.28
93.490.0094.010.0594.530.40
93.500.0094.020.0694.540.55
93.510.0094.030.0694.550.72
93.520.0094.040.0694.560.90
93.530.0094.050.0694.571.10
93.540.0094.060.0694.581.32
93.550.0094.070.0794.591.55
93.560.0094.080.0794.601.79
93.570.0094.090.0794.612.05
93.580.0094.100.0794.622.31
93.590.0094.110.0794.632.59
93.600.0094.120.0894.642.88
93.610.0094.130.0894.653.18
93.620.0094.140.0894.663.49
93.630.0094.150.0894.673.81
93.640.0094.160.0894.684.14
93.650.0094.170.0894.694.48
93.660.0094.180.0994.704.83
93.670.0094.190.0994.715.18
93.680.0094.200.0994.725.55
93.690.0094.210.0994.735.92
93.700.0094.220.0994.746.30
93.710.0094.230.0994.756.69
93.720.0094.240.1094.767.09
93.730.0094.250.1094.777.49
93.740.0094.260.1094.787.91
93.750.0094.270.1094.798.33
93.760.0094.280.1094.808.75
93.770.0094.290.1094.818.86
93.780.0094.300.1094.828.87
93.790.0094.310.1094.838.88
93.800.0094.320.1194.848.89
93.810.0094.330.1194.858.91
Elevation (feet)Primary (cfs)
94.868.92
94.878.93
94.888.94
94.898.96
94.908.97
94.918.98
94.928.99
94.939.01
94.949.02
94.959.03
94.969.04
94.979.06
94.989.07
94.999.08
95.009.09
Page 594 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 12/19/2025 tions LLC Page 427
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Area-Storage for Pond 42P: BIORENTION BASIN 3A
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
93.3077094.34724367
93.3287294.36742381
93.3496394.38760396
93.36106594.40778412
93.38116894.42796428
93.401261094.44814444
93.421351394.46832460
93.441451694.48850477
93.461551994.50868494
93.481642294.52886512
93.501742594.54904530
93.521842994.56922548
93.541943294.58940566
93.562033694.60958585
93.582134194.62976605
93.602234594.64994625
93.622325094.661,012645
93.642425494.681,030665
93.662525994.701,048686
93.682626494.721,066707
93.702717094.741,084728
93.722817594.761,103750
93.742918194.781,121773
93.763008794.801,139795
93.783109394.821,157818
93.803209994.841,175841
93.8233010694.861,193865
93.8433911294.881,211889
93.8634911994.901,229914
93.8835912694.921,247938
93.9036813494.941,265963
93.9237814194.961,283989
93.9438814994.981,3011,015
93.9639815795.001,3191,041
93.98407165
94.00417173
94.02435181
94.04453190
94.06471200
94.08489209
94.10507219
94.12525229
94.14543240
94.16561251
94.18579263
94.20597274
94.22615286
94.24633299
94.26652312
94.28670325
94.30688339
94.32706353
Page 595 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 12/19/2025 tions LLC Page 428
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Link 32L: POA1
Inflow Area = 73,567 sf, 27.76% Impervious, Inflow Depth = 0.05" for 100 YR-F event Inflow = 0.25 cfs @ 13.56 hrs, Volume= 325 cf Primary = 0.25 cfs @ 13.56 hrs, Volume= 325 cf, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 32L: POA1
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NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 12/19/2025
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions
Page 429
Hydrograph for Link 32L: POA1
Time (hours)Inflow (cfs)Elevation (feet)Primary (cfs)
0.000.000.000.00
1.000.000.000.00
2.000.000.000.00
3.000.000.000.00
4.000.000.000.00
5.000.000.000.00
6.000.000.000.00
7.000.000.000.00
8.000.000.000.00
9.000.000.000.00
10.000.000.000.00
11.000.000.000.00
12.000.000.000.00
13.000.000.000.00
14.000.070.000.07
15.000.000.000.00
16.000.000.000.00
17.000.000.000.00
18.000.000.000.00
19.000.000.000.00
20.000.000.000.00
21.000.000.000.00
22.000.000.000.00
23.000.000.000.00
24.000.000.000.00
25.000.000.000.00
26.000.000.000.00
27.000.000.000.00
28.000.000.000.00
29.000.000.000.00
30.000.000.000.00
31.000.000.000.00
32.000.000.000.00
33.000.000.000.00
34.000.000.000.00
35.000.000.000.00
36.000.000.000.00
37.000.000.000.00
38.000.000.000.00
39.000.000.000.00
40.000.000.000.00
41.000.000.000.00
42.000.000.000.00
43.000.000.000.00
44.000.000.000.00
45.000.000.000.00
46.000.000.000.00
47.000.000.000.00
48.000.000.000.00
49.000.000.000.00
50.000.000.000.00
51.000.000.000.00
Time (hours)Inflow (cfs)Elevation (feet)Primary (cfs)
52.000.000.000.00
53.000.000.000.00
54.000.000.000.00
55.000.000.000.00
56.000.000.000.00
57.000.000.000.00
58.000.000.000.00
59.000.000.000.00
60.000.000.000.00
61.000.000.000.00
62.000.000.000.00
63.000.000.000.00
64.000.000.000.00
65.000.000.000.00
66.000.000.000.00
67.000.000.000.00
68.000.000.000.00
69.000.000.000.00
70.000.000.000.00
71.000.000.000.00
72.000.000.000.00
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Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Link 33L: POA 2
Inflow Area = 27,007 sf, 30.65% Impervious, Inflow Depth = 1.02" for 100 YR-F event Inflow = 0.25 cfs @ 12.98 hrs, Volume = 2,290 cf Primary = 0.25 cfs @ 12.98 hrs, Volume = 2,290 cf, Atten = 0%, Lag = 0.0 min
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 33L: POA 2
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NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 12/19/2025
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions
Page 431
Hydrograph for Link 33L: POA 2
Time (hours)Inflow (cfs)Elevation (feet)Primary (cfs)
0.000.000.000.00
1.000.000.000.00
2.000.000.000.00
3.000.000.000.00
4.000.000.000.00
5.000.000.000.00
6.000.000.000.00
7.000.000.000.00
8.000.000.000.00
9.000.000.000.00
10.000.000.000.00
11.000.000.000.00
12.000.000.000.00
13.000.250.000.25
14.000.150.000.15
15.000.120.000.12
16.000.090.000.09
17.000.050.000.05
18.000.010.000.01
19.000.000.000.00
20.000.000.000.00
21.000.000.000.00
22.000.000.000.00
23.000.000.000.00
24.000.000.000.00
25.000.000.000.00
26.000.000.000.00
27.000.000.000.00
28.000.000.000.00
29.000.000.000.00
30.000.000.000.00
31.000.000.000.00
32.000.000.000.00
33.000.000.000.00
34.000.000.000.00
35.000.000.000.00
36.000.000.000.00
37.000.000.000.00
38.000.000.000.00
39.000.000.000.00
40.000.000.000.00
41.000.000.000.00
42.000.000.000.00
43.000.000.000.00
44.000.000.000.00
45.000.000.000.00
46.000.000.000.00
47.000.000.000.00
48.000.000.000.00
49.000.000.000.00
50.000.000.000.00
51.000.000.000.00
Time (hours)Inflow (cfs)Elevation (feet)Primary (cfs)
52.000.000.000.00
53.000.000.000.00
54.000.000.000.00
55.000.000.000.00
56.000.000.000.00
57.000.000.000.00
58.000.000.000.00
59.000.000.000.00
60.000.000.000.00
61.000.000.000.00
62.000.000.000.00
63.000.000.000.00
64.000.000.000.00
65.000.000.000.00
66.000.000.000.00
67.000.000.000.00
68.000.000.000.00
69.000.000.000.00
70.000.000.000.00
71.000.000.000.00
72.000.000.000.00
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Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Link 34L: POA 3
Inflow Area = 38,333 sf, 22.73% Impervious, Inflow Depth = 0.78" for 100 YR-F event Inflow = 0.20 cfs @ 13.39 hrs, Volume= 2,499 cf Primary = 0.20 cfs @ 13.39 hrs, Volume= 2,499 cf, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 34L: POA 3
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Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions Ltd
Hydrograph for Link 34L: POA 3
Time (hours)Inflow (cfs)Elevation (feet)Primary (cfs)
0.000.000.000.00
1.000.000.000.00
2.000.000.000.00
3.000.000.000.00
4.000.000.000.00
5.000.000.000.00
6.000.000.000.00
7.000.000.000.00
8.000.000.000.00
9.000.000.000.00
10.000.000.000.00
11.000.000.000.00
12.000.000.000.00
13.000.200.000.20
14.000.190.000.19
15.000.160.000.16
16.000.110.000.11
17.000.030.000.03
18.000.000.000.00
19.000.000.000.00
20.000.000.000.00
21.000.000.000.00
22.000.000.000.00
23.000.000.000.00
24.000.000.000.00
25.000.000.000.00
26.000.000.000.00
27.000.000.000.00
28.000.000.000.00
29.000.000.000.00
30.000.000.000.00
31.000.000.000.00
32.000.000.000.00
33.000.000.000.00
34.000.000.000.00
35.000.000.000.00
36.000.000.000.00
37.000.000.000.00
38.000.000.000.00
39.000.000.000.00
40.000.000.000.00
41.000.000.000.00
42.000.000.000.00
43.000.000.000.00
44.000.000.000.00
45.000.000.000.00
46.000.000.000.00
47.000.000.000.00
48.000.000.000.00
49.000.000.000.00
50.000.000.000.00
51.000.000.000.00
Time (hours)Inflow (cfs)Elevation (feet)Primary (cfs)
52.000.000.000.00
53.000.000.000.00
54.000.000.000.00
55.000.000.000.00
56.000.000.000.00
57.000.000.000.00
58.000.000.000.00
59.000.000.000.00
60.000.000.000.00
61.000.000.000.00
62.000.000.000.00
63.000.000.000.00
64.000.000.000.00
65.000.000.000.00
66.000.000.000.00
67.000.000.000.00
68.000.000.000.00
69.000.000.000.00
70.000.000.000.00
71.000.000.000.00
72.000.000.000.00
Page 601 Download HTML
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Multi-Event Tables Printed 12/19/2025 Page 434
Events for Subcatchment 2S: DA-P1 PERVIOUS
EventRainfall (inches)Runoff (cfs)Volume (cubic-feet)Depth (inches)
2 YR-C3.420.00240.01
2 YR-F4.040.012220.05
10 YR-C5.380.061,2550.28
10 YR-F6.340.172,4230.55
100 YR-C9.481.068,1241.83
100 YR-F11.411.8812,6972.87
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Multi-Event Tables Printed 12/19/2025 Page 435
Events for Subcatchment 3S: DA-P3 PERVIOUS
EventRainfall (inches)Runoff (cfs)Volume (cubic-feet)Depth (inches)
2 YR-C3.420.00130.01
2 YR-F4.040.001240.05
10 YR-C5.380.047000.28
10 YR-F6.340.101,3510.55
100 YR-C9.480.664,5281.83
100 YR-F11.411.187,0772.87
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Multi-Event Tables Printed 12/19/2025 Page 436
Events for Subcatchment 4S: DA-P2 PERVIOUS
EventRainfall (inches)Runoff (cfs)Volume (cubic-feet)Depth (inches)
2 YR-C3.420.0080.01
2 YR-F4.040.00780.05
10 YR-C5.380.024420.28
10 YR-F6.340.078540.55
100 YR-C9.480.492,8631.83
100 YR-F11.410.864,4752.87
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Multi-Event Tables Printed 12/19/2025 Page 437
Events for Subcatchment 6S: DA-P3 IMPERVIOUS
EventRainfall (inches)Runoff (cfs)Volume (cubic-feet)Depth (inches)
2 YR-C3.420.592,3143.19
2 YR-F4.040.702,7623.81
10 YR-C5.380.933,7345.14
10 YR-F6.341.104,4306.10
100 YR-C9.481.656,7089.24
100 YR-F11.411.988,10811.17
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Multi-Event Tables Printed 12/19/2025 Page 438
Events for Subcatchment 7S: DA-P2 IMPERVIOUS
EventRainfall (inches)Runoff (cfs)Volume (cubic-feet)Depth (inches)
2 YR-C3.420.562,1983.19
2 YR-F4.040.662,6243.81
10 YR-C5.380.893,5475.14
10 YR-F6.341.054,2086.10
100 YR-C9.481.576,3729.24
100 YR-F11.411.897,70311.17
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Multi-Event Tables Printed 12/19/2025 Page 439
Events for Subcatchment 8S: DA-P1 IMPERVIOUS
EventRainfall (inches)Runoff (cfs)Volume (cubic-feet)Depth (inches)
2 YR-C3.421.334,6273.19
2 YR-F4.041.585,5253.81
10 YR-C5.382.117,4675.14
10 YR-F6.342.498,8596.10
100 YR-C9.483.7313,4169.24
100 YR-F11.414.4916,21711.17
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Multi-Event Tables Printed 12/19/2025 Page 440
Events for Subcatchment 14S: LOT 11 Roof
EventRainfall (inches)Runoff (cfs)Volume (cubic-feet)Depth (inches)
2 YR-C3.420.257973.19
2 YR-F4.040.299513.81
10 YR-C5.380.391,2865.14
10 YR-F6.340.461,5256.10
100 YR-C9.480.692,3109.24
100 YR-F11.410.832,79211.17
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Analysis - Proposed ConditionsMulti-Event Tables
Prepared by Civil Core ConsultingPrinted 12/19/2025
HydroCAD\textregistered 10.20-8a s/n 13637\circledR 2025 HydroCAD Software Solutions LLCPage 441
Events for Pond 2P: Subsurface Infiltration Basin 1
EventInflow (cfs)Outflow (cfs)Discarded (cfs)Primary (cfs)Elevation (feet)Storage (cubic-feet)
2 YR-C0.340.340.340.0087.016
2 YR-F0.420.420.420.0087.017
10 YR-C0.560.560.560.0087.0110
10 YR-F0.650.570.570.0087.0331
100 YR-C2.010.570.570.0089.072,711
100 YR-F4.400.820.570.2592.627,159
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Multi-Event Tables Printed 12/19/2025 Page 442
Events for Pond 5P: BIORETENTION BASIN 1A
EventInflow (cfs)Primary (cfs)Elevation (feet)Storage (cubic-feet)
2 YR-C1.330.1491.882,824
2 YR-F1.580.1792.213,321
10 YR-C2.110.2392.994,482
10 YR-F2.500.2793.745,607
100 YR-C4.201.8995.107,644
100 YR-F5.504.1295.177,760
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Multi-Event Tables Printed 12/19/2025 Page 443
Events for Pond 6P: BIORENTION BASIN 2A
EventInflow (cfs)Primary (cfs)Elevation (feet)Storage (cubic-feet)
2 YR-C0.000.0094.428
2 YR-F0.000.0094.8351
10 YR-C0.020.0294.9160
10 YR-F0.070.0695.0378
100 YR-C0.490.4995.54178
100 YR-F0.860.8695.56183
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Analysis - Proposed ConditionsMulti-Event Tables
Prepared by Civil Core ConsultingPrinted 12/19/2025
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Events for Pond 8P: INFILTRATION BASIN 3
Events for Pound 8P. INFILTRATION BASIN 3
EventInflow (cfs)Outflow (cfs)Discarded (cfs)Primary (cfs)Elevation (feet)Storage (cubic-feet)
2 YR-C0.150.150.150.0090.766
2 YR-F0.270.270.270.0090.7613
10 YR-C0.670.270.270.0091.01294
10 YR-F0.940.270.270.0091.23548
100 YR-C1.590.340.270.0793.062,655
100 YR-F2.660.470.270.2094.404,201
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Multi-Event Tables Printed 12/19/2025 Page 445
Events for Pond 10P: PERVIOUS PAVEMENT 2B
EventInflow (cfs)Primary (cfs)Elevation (feet)Storage (cubic-feet)
2 YR-C0.560.1494.59748
2 YR-F0.660.1994.81870
10 YR-C0.890.5694.84966
10 YR-F1.050.8394.851,015
100 YR-C1.571.4494.881,105
100 YR-F1.891.7694.901,145
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Multi-Event Tables Printed 12/19/2025 Page 446
Events for Pond 15P: PERVIOUS PAVEMENT 3B
EventInflow (cfs)Primary (cfs)Elevation (feet)Storage (cubic-feet)
2 YR-C0.590.1594.71773
2 YR-F0.700.2794.82866
10 YR-C0.930.6794.85951
10 YR-F1.100.9494.86994
100 YR-C1.651.5394.891,076
100 YR-F1.981.8694.901,116
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Analysis - Proposed ConditionsMulti-Event Tables
Prepared by Civil Core ConsultingPrinted 12/19/2025
HydroCAD\textregistered 10.20-8a s/n 13637\circledR 2025 HydroCAD Software Solutions LLCPage 447
Events for Pond 33P: INFILTRATION BASIN 2
EventInflow (cfs)Outflow (cfs)Discarded (cfs)Primary (cfs)Elevation (feet)Storage (cubic-feet)
2 YR-C0.140.080.080.0092.12286
2 YR-F0.190.090.090.0092.28408
10 YR-C0.560.110.110.0092.72790
10 YR-F0.830.130.130.0093.121,207
100 YR-C1.850.290.200.1094.122,640
100 YR-F2.570.480.240.2594.713,760
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Multi-Event Tables Printed 12/19/2025 Page 448
Events for Pond 42P: BIORENTION BASIN 3A
EventInflow (cfs)Primary (cfs)Elevation (feet)Storage (cubic-feet)
2 YR-C0.000.0093.4213
2 YR-F0.000.0093.84112
10 YR-C0.040.0293.92141
10 YR-F0.100.0794.07204
100 YR-C0.660.6094.54532
100 YR-F1.181.1794.57560
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Multi-Event Tables Printed 12/19/2025 Page 449
Events for Link 32L: POA1
EventInflow (cfs)Primary (cfs)Elevation (feet)
2 YR-C0.000.000.00
2 YR-F0.000.000.00
10 YR-C0.000.000.00
10 YR-F0.000.000.00
100 YR-C0.000.000.00
100 YR-F0.250.250.00
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Multi-Event Tables Printed 12/19/2025 Page 450
Events for Link 33L: POA 2
EventInflow (cfs)Primary (cfs)Elevation (feet)
2 YR-C0.000.000.00
2 YR-F0.000.000.00
10 YR-C0.000.000.00
10 YR-F0.000.000.00
100 YR-C0.100.100.00
100 YR-F0.250.250.00
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Multi-Event Tables Printed 12/19/2025 Page 451
Events for Link 34L: POA 3
EventInflow (cfs)Primary (cfs)Elevation (feet)
2 YR-C0.000.000.00
2 YR-F0.000.000.00
10 YR-C0.000.000.00
10 YR-F0.000.000.00
100 YR-C0.070.070.00
100 YR-F0.200.200.00
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Table of Contents Printed 12/19/2025
TABLE OF CONTENTS
Project Reports
1 Routing Diagram 2 Project Notes 3 Rainfall Events Listing (selected events) 4 Area Listing (selected nodes) 5 Soil Listing (selected nodes) 6 Ground Covers (selected nodes) 7 Pipe Listing (selected nodes)
2 YR-C Event
8 Node Listing
10 Subcat 2S: DA-P1 PERVIOUS
12 Subcat 3S: DA-P3 PERVIOUS
14 Subcat 4S: DA-P2 PERVIOUS
16 Subcat 6S: DA-P3 IMPERVIOUS
18 Subcat 7S: DA-P2 IMPERVIOUS
20 Subcat 8S: DA-P1 IMPERVIOUS
22 Subcat 14S: LOT 11 Roof
24 Pond 2P: Subsurface Infiltration Basin 1
31 Pond 5P: BIORETENTION BASIN 1A
37 Pond 6P: BIORENTION BASIN 2A
43 Pond 8P: INFILTRATION BASIN 3
49 Pond 10P: PERVIOUS PAVEMENT 2B
55 Pond 15P: PERVIOUS PAVEMENT 3B
61 Pond 33P: INFILTRATION BASIN 2
67 Pond 42P: BIORENTION BASIN 3A
73 Link 32L: POA1
75 Link 33L: POA 2
77 Link 34L: POA 3
2 YR-F Event
79 Node Listing 81 Subcat 2S: DA-P1 PERVIOUS
87 Subcat 6S: DA-P3 IMPERVIOUS
81 Subcat 2S: DA-P1 PERVIOUS
89 Subcat 7S: DA-P2 IMPERVIOUS
83 Subcat 3S: DA-P3 PERVIOUS
91 Subcat 8S: DA-P1 IMPERVIOUS
85 Subcat 4S: DA-P2 PERVIOUS
93 Subcat 14S: LOT 11 Roof
95 Pond 2P: Subsurface Infiltration Basin 1
102 Pond 5P: BIORETENTION BASIN 1A
108 Pond 6P: BIORENTION BASIN 2A
114 Pond 8P: INFILTRATION BASIN 3
120 Pond 10P: PERVIOUS PAVEMENT 2B
126 Pond 15P: PERVIOUS PAVEMENT 3B
132 Pond 33P: INFILTRATION BASIN 2
138 Pond 42P: BIORENTION BASIN 3A
14 Link 32L: POA1
146 Link 33L: POA2
148 Link 34L: POA 3
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Table of Contents Printed 12/19/2025
10 YR-C Event
150 Node Listing 152 Subcat 2S: DA-P1 PERVIOUS 154 Subcat 3S: DA-P3 PERVIOUS 156 Subcat 4S: DA-P2 PERVIOUS 158 Subcat 6S: DA-P3 IMPERVIOUS 160 Subcat 7S: DA-P2 IMPERVIOUS 162 Subcat 8S: DA-P1 IMPERVIOUS 164 Subcat 14S: LOT 11 Roof 166 Pond 2P: Subsurface Infiltration Basin 1 173 Pond 5P: BIORETENTION BASIN 1A 179 Pond 6P: BIORENTION BASIN 2A 185 Pond 8P: INFILTRATION BASIN 3 191 Pond 10P: PERVIOUS PAVEMENT 2B 197 Pond 15P: PERVIOUS PAVEMENT 3B 203 Pond 33P: INFILTRATION BASIN 2 209 Pond 42P: BIORENTION BASIN 3A 215 Link 32L: POA1 217 Link 33L: POA 2 219 Link 34L: POA 3
10 YR-F Event
221 Node Listing
221 Node Listing 223 Subcat 2S: DA-P1 PERVIOUS 225 Subcat 3S: DA-P3 PERVIOUS 227 Subcat 4S: DA-P2 PERVIOUS 229 Subcat 6S: DA-P3 IMPERVIOUS 231 Subcat 7S: DA-P2 IMPERVIOUS 233 Subcat 8S: DA-P1 IMPERVIOUS 235 Subcat 14S: LOT 11 Roof 237 Pond 2P: Subsurface Infiltration Basin 1 244 Pond 5P: BIORETENTION BASIN 1A 250 Pond 6P: BIORENTION BASIN 2A 256 Pond 8P: INFILTRATION BASIN 3 262 Pond 10P: PERVIOUS PAVEMENT 2B 268 Pond 15P: PERVIOUS PAVEMENT 3B 274 Pond 33P: INFILTRATION BASIN 2 280 Pond 42P: BIORENTION BASIN 3A 286 Link 32L: POA1 288 Link 33L: POA 2 290 Link 34L: POA 3
100 YR-C Event
292 Node Listing
294 Subcat 2S: DA-P1 PERVIOUS
296 Subcat 3S: DA-P3 PERVIOUS
298 Subcat 4S: DA-P2 PERVIOUS
300 Subcat 6S: DA-P3 IMPERVIOUS
302 Subcat 7S: DA-P2 IMPERVIOUS
304 Subcat 8S: DA-P1 IMPERVIOUS
306 Subcat 14S: LOT 11 Roof
308 Pond 2P: Subsurface Infiltration Basin 1
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Table of Contents Printed 12/19/2025
315 Pond 5P: BIORETENTION BASIN 1A 321 Pond 6P: BIORENTION BASIN 2A 327 Pond 8P: INFILTRATION BASIN 3 333 Pond 10P: PERVIOUS PAVEMENT 2B 339 Pond 15P: PERVIOUS PAVEMENT 3B 345 Pond 33P: INFILTRATION BASIN 2 351 Pond 42P: BIORENTION BASIN 3A 357 Link 32L: POA1 359 Link 33L: POA 2 361 Link 34L: POA 3
100 YR-F Event
363 Node Listing
365 Subcat 2S: DA-P1 PERVIOUS
367 Subcat 3S: DA-P3 PERVIOUS
369 Subcat 4S: DA-P2 PERVIOUS
371 Subcat 6S: DA-P3 IMPERVIOUS
373 Subcat 7S: DA-P2 IMPERVIOUS
375 Subcat 8S: DA-P1 IMPERVIOUS
377 Subcat 14S: LOT 11 Roof
379 Pond 2P: Subsurface Infiltration Basin 1
386 Pond 5P: BIORETENTION BASIN 1A
392 Pond 6P: BIORETENTION BASIN 2A
398 Pond 8P: INFILTRATION BASIN 3
404 Pond 10P: PERVIOUS PAVEMENT 2B
410 Pond 15P: PERVIOUS PAVEMENT 3B
416 Pond 33P: INFILTRATION BASIN 2
422 Pond 42P: BIORETENTION BASIN 3A
428 Link 32L: POA1
430 Link 33L: POA 2
432 Link 34L: POA 3
Multi-Event Tables
434 Subcat 2S: DA-P1 PERVIOUS
438 Subcat 7S: DA-P2 IMPERVIOUS
439 Subcat 8S: DA-P1 IMPERVIOUS
435 Subcat 3S: DA-P3 PERVIOUS
440 Subcat 14S: LOT 11 Roof
436 Subcat 4S: DA-P2 PERVIOUS 437 Subcat 6S: DA-P3 IMPERVIOUS
437 Subcat 6S: DA-P3 IMPERVIOUS
441 Pond 2P: Subsurface Infiltration Basin 1
442 Pond 5P: BIORETENTION BASIN 1A
443 Pond 6P: BIORENTION BASIN 2A
444 Pond 8P: INFILTRATION BASIN 3
445 Pond 10P: PERVIOUS PAVEMENT 2B
446 Pond 15P: PERVIOUS PAVEMENT 3B
447 Pond 33P: INFILTRATION BASIN 2
448 Pond 42P: BIORENTION BASIN 3A
449 Link 32L: POA1
450 Link 33L: POA 2
451 Link 34L: POA 3
451 Link 34L: POA 3
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Project Notes
Rainfall events imported from "240214_Analysis.hcp"
Printed 10/24/2025 Page 2
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Analysis - Proposed Conditions
Printed 10/24/2025 Page 3
Rainfall Events Listing (selected events)
Event#Event NameStorm TypeCurveModeDuration (hours)B/BDepth (inches)AMC
12 YR-CNOAA 24-hrDDefault24.0013.422
22 YR-FNOAA 24-hrDDefault24.0014.042
310 YR-CNOAA 24-hrDDefault24.0015.382
410 YR-FNOAA 24-hrDDefault24.0016.342
5100 YR-CNOAA 24-hrDDefault24.0019.482
6100 YR-FNOAA 24-hrDDefault24.00111.412
1 2 YR-C NOAA 24-hr D Default 24.00 1 3.42
2 2 YR-F NOAA 24-hr D Default 24.00 1 4.04
3 10 YR-C NOAA 24-hr D Default 24.00 1 5.38
4 10 YR-F NOAA 24-hr D Default 24.00 1 6.34
5 100 YR-C NOAA 24-hr D Default 24.00 1 9.48
6 100 YR-F NOAA 24-hr D Default 24.00 1 11.41
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Analysis - Proposed Conditions
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HydroCAD\textregistered 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 4
Area Listing (selected nodes)
Area (sq-ft)CNDescription (subcatchment-numbers)
16,65098Roofs, HSG A (36S, 37S, 38S, 40S, 42S, 44S, 48S, 51S, 55S)
16,65098TOTAL AREA
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Soil Listing (selected nodes)
Area (sq-ft)Soil GroupSubcatchment Numbers
16,650HSG A36S, 37S, 38S, 40S, 42S, 44S, 48S, 51S, 55S
0HSG B
0HSG C
0HSG D
0Other
16,650TOTAL AREA
Printed 10/24/2025 Page 5
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Analysis - Proposed Conditions
Prepared by Civil Core Consulting Printed 10/24/2025
HydroCAD\textregistered 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 6
Ground Covers (selected nodes)
HSG-A (sq-ft) HSG-B (sq-ft) HSG-C (sq-ft) HSG-D (sq-ft) Other (sq-ft) Total (sq-ft) Ground Cover Subcatchment Numbers
16,650 0 0 0 0 16,650 Roofs 3
16,650 0 0 0 0 16,650 TOTAL AREA
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Analysis - Proposed Conditions NOAA 24-hr D 2 YR-C Rainfall=3.42" Prepared by Civil Core Consulting Printed 10/24/2025 HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 7
Time span=0.00-72.00 hrs, dt=0.01 hrs, 7201 points
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious
Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method
Subcatchment 36S: Roof Lot 1Runoff Area=1,850 sf 100.00% Impervious Runoff Depth=3.19" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.15 cfs 491 cf
Subcatchment 37S: Roof Lot 8Runoff Area=1,850 sf 100.00% Impervious Runoff Depth=3.19" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.15 cfs 491 cf
Subcatchment 38S: Roof Lot 2Runoff Area=1,850 sf 100.00% Impervious Runoff Depth=3.19" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.15 cfs 491 cf
Subcatchment 40S: Roof Lot 9Runoff Area=1,850 sf 100.00% Impervious Runoff Depth=3.19" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.15 cfs 491 cf
Subcatchment 42S: Roof Lot 10Runoff Area=1,850 sf 100.00% Impervious Runoff Depth=3.19" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.15 cfs 491 cf
Subcatchment 44S: Roof Lot 3Runoff Area=1,850 sf 100.00% Impervious Runoff Depth=3.19" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.15 cfs 491 cf
Subcatchment 48S: Roof Lot 4Runoff Area=1,850 sf 100.00% Impervious Runoff Depth=3.19" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.15 cfs 491 cf
Subcatchment 51S: Roof Lot 6Runoff Area=1,850 sf 100.00% Impervious Runoff Depth=3.19" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.15 cfs 491 cf
Subcatchment 55S: Roof Lot 7Runoff Area=1,850 sf 100.00% Impervious Runoff Depth=3.19" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.15 cfs 491 cf
Pond 37P: Subsurface Basin Lot 1Peak Elev=91.36' Storage=0.002 af Inflow=0.15 cfs 491 cf Outflow=0.03 cfs 491 cf
Pond 38P: Subsurface Basin Lot 8Peak Elev=94.21' Storage=0.001 af Inflow=0.15 cfs 491 cf Outflow=0.08 cfs 491 cf
Pond 39P: Subsurface Basin Lot 2Peak Elev=93.25' Storage=0.001 af Inflow=0.15 cfs 491 cf Outflow=0.07 cfs 491 cf
Pond 41P: Subsurface Basin Lot 9Peak Elev=93.26' Storage=0.001 af Inflow=0.15 cfs 491 cf Outflow=0.07 cfs 491 cf
Pond 43P: Subsurface Basin Lot 10Peak Elev=92.21' Storage=0.001 af Inflow=0.15 cfs 491 cf Outflow=0.08 cfs 491 cf
Pond 46P: Subsurface Basin Lot 3Peak Elev=93.30' Storage=0.001 af Inflow=0.15 cfs 491 cf Outflow=0.05 cfs 491 cf
Pond 50P: Subsurface Basin Lot 4Peak Elev=93.30' Storage=0.001 af Inflow=0.15 cfs 491 cf Outflow=0.05 cfs 491 cf
Page 629 Download HTML
Analysis - Proposed Conditions NOAA 24-hr D 2 YR-C Rainfall=3.42" Prepared by Civil Core Consulting Printed 10/24/2025 HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 8
Pond 52P: Subsurface Basin Lot 6
Pond 56P: Subsurface Basin Lot 7 Peak Elev=93.25' Storage=0.001 af Inflow=0.15 cfs 491 cf Outflow=0.07 cfs 491 cf
Total Runoff Area = 16,650 sf Runoff Volume = 4,422 cf Average Runoff Depth = 3.19" 0.00% Pervious = 0 sf 100.00% Impervious = 16,650 sf
Peak Elev=93.25' Storage=0.001 af Inflow=0.15 cfs 491 cf Outflow=0.07 cfs 491 cf
Peak Elev=94.21' Storage=0.001 af Inflow=0.15 cfs 491 cf Outflow=0.08 cfs 491 cf
Runoff Volume = 4,422 cf Average Runoff Depth = 3.19" 0.00% Pervious = 0 sf 100.00% Impervious = 16,650 sf
Page 630 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 9
Summary for Subcatchment 36S: Roof Lot 1
Runoff = 0.15 cfs @ 12.09 hrs, Volume= Routed to Pond 37P : Subsurface Basin Lot 1
491 cf, Depth= 3.19"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-C Rainfall=3.42"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)
0.4 45 2.00 Direct Entry, Pipe Flow
Subcatchment 36S: Roof Lot 1
Page 631 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 36S: Roof Lot 1
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.080.000.010.00
4.000.180.000.060.00
6.000.290.000.140.00
8.000.440.000.270.00
10.000.680.000.480.01
12.001.640.001.420.09
14.002.740.002.510.01
16.002.980.002.740.00
18.003.130.002.900.00
20.003.240.003.010.00
22.003.340.003.100.00
24.003.420.003.190.00
26.003.420.003.190.00
28.003.420.003.190.00
30.003.420.003.190.00
32.003.420.003.190.00
34.003.420.003.190.00
36.003.420.003.190.00
38.003.420.003.190.00
40.003.420.003.190.00
42.003.420.003.190.00
44.003.420.003.190.00
46.003.420.003.190.00
48.003.420.003.190.00
50.003.420.003.190.00
52.003.420.003.190.00
54.003.420.003.190.00
56.003.420.003.190.00
58.003.420.003.190.00
60.003.420.003.190.00
62.003.420.003.190.00
64.003.420.003.190.00
66.003.420.003.190.00
68.003.420.003.190.00
70.003.420.003.190.00
72.003.420.003.190.00
Page 10
Page 632 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 11
Summary for Subcatchment 37S: Roof Lot 8
Runoff = 0.15 cfs @ 12.09 hrs, Volume= 491 cf, Depth= 3.19"
Routed to Pond 38P : Subsurface Basin Lot 8
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-C Rainfall=3.42"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)
0.4 45 2.00 Direct Entry, Pipe Flow
Subcatchment 37S: Roof Lot 8
Page 633 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 37S: Roof Lot 8
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.080.000.010.00
4.000.180.000.060.00
6.000.290.000.140.00
8.000.440.000.270.00
10.000.680.000.480.01
12.001.640.001.420.09
14.002.740.002.510.01
16.002.980.002.740.00
18.003.130.002.900.00
20.003.240.003.010.00
22.003.340.003.100.00
24.003.420.003.190.00
26.003.420.003.190.00
28.003.420.003.190.00
30.003.420.003.190.00
32.003.420.003.190.00
34.003.420.003.190.00
36.003.420.003.190.00
38.003.420.003.190.00
40.003.420.003.190.00
42.003.420.003.190.00
44.003.420.003.190.00
46.003.420.003.190.00
48.003.420.003.190.00
50.003.420.003.190.00
52.003.420.003.190.00
54.003.420.003.190.00
56.003.420.003.190.00
58.003.420.003.190.00
60.003.420.003.190.00
62.003.420.003.190.00
64.003.420.003.190.00
66.003.420.003.190.00
68.003.420.003.190.00
70.003.420.003.190.00
72.003.420.003.190.00
Page 12
Page 634 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 13
Summary for Subcatchment 38S: Roof Lot 2
Runoff = 0.15 cfs @ 12.09 hrs, Volume= 491 cf, Depth= 3.19" Routed to Pond 39P : Subsurface Basin Lot 2
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-C Rainfall=3.42"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
0.4 45 2.00 Direct Entry, Pipe Flow
Subcatchment 38S: Roof Lot 2
Page 635 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 38S: Roof Lot 2
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.080.000.010.00
4.000.180.000.060.00
6.000.290.000.140.00
8.000.440.000.270.00
10.000.680.000.480.01
12.001.640.001.420.09
14.002.740.002.510.01
16.002.980.002.740.00
18.003.130.002.900.00
20.003.240.003.010.00
22.003.340.003.100.00
24.003.420.003.190.00
26.003.420.003.190.00
28.003.420.003.190.00
30.003.420.003.190.00
32.003.420.003.190.00
34.003.420.003.190.00
36.003.420.003.190.00
38.003.420.003.190.00
40.003.420.003.190.00
42.003.420.003.190.00
44.003.420.003.190.00
46.003.420.003.190.00
48.003.420.003.190.00
50.003.420.003.190.00
52.003.420.003.190.00
54.003.420.003.190.00
56.003.420.003.190.00
58.003.420.003.190.00
60.003.420.003.190.00
62.003.420.003.190.00
64.003.420.003.190.00
66.003.420.003.190.00
68.003.420.003.190.00
70.003.420.003.190.00
72.003.420.003.190.00
Page 14
Page 636 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 15
Summary for Subcatchment 40S: Roof Lot 9
Runoff = 0.15 cfs @ 12.09 hrs, Volume= 491 cf, Depth= 3.19" Routed to Pond 41P : Subsurface Basin Lot 9
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-C Rainfall=3.42"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
0.4 45 2.00 Direct Entry, Pipe Flow
Subcatchment 40S: Roof Lot 9
Page 637 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 40S: Roof Lot 9
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.080.000.010.00
4.000.180.000.060.00
6.000.290.000.140.00
8.000.440.000.270.00
10.000.680.000.480.01
12.001.640.001.420.09
14.002.740.002.510.01
16.002.980.002.740.00
18.003.130.002.900.00
20.003.240.003.010.00
22.003.340.003.100.00
24.003.420.003.190.00
26.003.420.003.190.00
28.003.420.003.190.00
30.003.420.003.190.00
32.003.420.003.190.00
34.003.420.003.190.00
36.003.420.003.190.00
38.003.420.003.190.00
40.003.420.003.190.00
42.003.420.003.190.00
44.003.420.003.190.00
46.003.420.003.190.00
48.003.420.003.190.00
50.003.420.003.190.00
52.003.420.003.190.00
54.003.420.003.190.00
56.003.420.003.190.00
58.003.420.003.190.00
60.003.420.003.190.00
62.003.420.003.190.00
64.003.420.003.190.00
66.003.420.003.190.00
68.003.420.003.190.00
70.003.420.003.190.00
72.003.420.003.190.00
Page 16
Page 638 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 17
Summary for Subcatchment 42S: Roof Lot 10
Runoff = 0.15 cfs @ 12.09 hrs, Volume= 491 cf, Depth= 3.19"
Routed to Pond 43P : Subsurface Basin Lot 10
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-C Rainfall=3.42"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)
0.4 45 2.00 Direct Entry, Pipe Flow
Subcatchment 42S: Roof Lot 10
Page 639 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 42S: Roof Lot 10
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.080.000.010.00
4.000.180.000.060.00
6.000.290.000.140.00
8.000.440.000.270.00
10.000.680.000.480.01
12.001.640.001.420.09
14.002.740.002.510.01
16.002.980.002.740.00
18.003.130.002.900.00
20.003.240.003.010.00
22.003.340.003.100.00
24.003.420.003.190.00
26.003.420.003.190.00
28.003.420.003.190.00
30.003.420.003.190.00
32.003.420.003.190.00
34.003.420.003.190.00
36.003.420.003.190.00
38.003.420.003.190.00
40.003.420.003.190.00
42.003.420.003.190.00
44.003.420.003.190.00
46.003.420.003.190.00
48.003.420.003.190.00
50.003.420.003.190.00
52.003.420.003.190.00
54.003.420.003.190.00
56.003.420.003.190.00
58.003.420.003.190.00
60.003.420.003.190.00
62.003.420.003.190.00
64.003.420.003.190.00
66.003.420.003.190.00
68.003.420.003.190.00
70.003.420.003.190.00
72.003.420.003.190.00
Page 18
Page 640 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 19
Summary for Subcatchment 44S: Roof Lot 3
Runoff = 0.15 cfs @ 12.09 hrs, Volume= 491 cf, Depth= 3.19" Routed to Pond 46P : Subsurface Basin Lot 3
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-C Rainfall=3.42"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
0.4 45 2.00 Direct Entry, Pipe Flow
Subcatchment 44S: Roof Lot 3
Page 641 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025
2 YR-C Rainfall=3.42" Printed 10/24/2025 Page 20
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 44S: Roof Lot 3
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.080.000.010.00
4.000.180.000.060.00
6.000.290.000.140.00
8.000.440.000.270.00
10.000.680.000.480.01
12.001.640.001.420.09
14.002.740.002.510.01
16.002.980.002.740.00
18.003.130.002.900.00
20.003.240.003.010.00
22.003.340.003.100.00
24.003.420.003.190.00
26.003.420.003.190.00
28.003.420.003.190.00
30.003.420.003.190.00
32.003.420.003.190.00
34.003.420.003.190.00
36.003.420.003.190.00
38.003.420.003.190.00
40.003.420.003.190.00
42.003.420.003.190.00
44.003.420.003.190.00
46.003.420.003.190.00
48.003.420.003.190.00
50.003.420.003.190.00
52.003.420.003.190.00
54.003.420.003.190.00
56.003.420.003.190.00
58.003.420.003.190.00
60.003.420.003.190.00
62.003.420.003.190.00
64.003.420.003.190.00
66.003.420.003.190.00
68.003.420.003.190.00
70.003.420.003.190.00
72.003.420.003.190.00
Page 642 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025
YR-C Rainfall=3.42" Printed 10/24/2025 Page 21
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 48S: Roof Lot 4
Runoff = 0.15 cfs @ 12.09 hrs, Volume= 491 cf, Depth= 3.19"
Routed to Pond 50P : Subsurface Basin Lot 4
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-C Rainfall=3.42"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)
0.4 45 2.00 Direct Entry, Pipe Flow
Subcatchment 48S: Roof Lot 4
Page 643 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 48S: Roof Lot 4
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.080.000.010.00
4.000.180.000.060.00
6.000.290.000.140.00
8.000.440.000.270.00
10.000.680.000.480.01
12.001.640.001.420.09
14.002.740.002.510.01
16.002.980.002.740.00
18.003.130.002.900.00
20.003.240.003.010.00
22.003.340.003.100.00
24.003.420.003.190.00
26.003.420.003.190.00
28.003.420.003.190.00
30.003.420.003.190.00
32.003.420.003.190.00
34.003.420.003.190.00
36.003.420.003.190.00
38.003.420.003.190.00
40.003.420.003.190.00
42.003.420.003.190.00
44.003.420.003.190.00
46.003.420.003.190.00
48.003.420.003.190.00
50.003.420.003.190.00
52.003.420.003.190.00
54.003.420.003.190.00
56.003.420.003.190.00
58.003.420.003.190.00
60.003.420.003.190.00
62.003.420.003.190.00
64.003.420.003.190.00
66.003.420.003.190.00
68.003.420.003.190.00
70.003.420.003.190.00
72.003.420.003.190.00
Page 22
Page 644 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025
YR-C Rainfall=3.42" Printed 10/24/2025 Page 23
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 51S: Roof Lot 6
Runoff = 0.15 cfs @ 12.09 hrs, Volume= 491 cf, Depth= 3.19"
Routed to Pond 52P : Subsurface Basin Lot 6
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-C Rainfall=3.42"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)
0.4 45 2.00 Direct Entry, Pipe Flow
Subcatchment 51S: Roof Lot 6
Page 645 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 51S: Roof Lot 6
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.080.000.010.00
4.000.180.000.060.00
6.000.290.000.140.00
8.000.440.000.270.00
10.000.680.000.480.01
12.001.640.001.420.09
14.002.740.002.510.01
16.002.980.002.740.00
18.003.130.002.900.00
20.003.240.003.010.00
22.003.340.003.100.00
24.003.420.003.190.00
26.003.420.003.190.00
28.003.420.003.190.00
30.003.420.003.190.00
32.003.420.003.190.00
34.003.420.003.190.00
36.003.420.003.190.00
38.003.420.003.190.00
40.003.420.003.190.00
42.003.420.003.190.00
44.003.420.003.190.00
46.003.420.003.190.00
48.003.420.003.190.00
50.003.420.003.190.00
52.003.420.003.190.00
54.003.420.003.190.00
56.003.420.003.190.00
58.003.420.003.190.00
60.003.420.003.190.00
62.003.420.003.190.00
64.003.420.003.190.00
66.003.420.003.190.00
68.003.420.003.190.00
70.003.420.003.190.00
72.003.420.003.190.00
Page 24
Page 646 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 25
Summary for Subcatchment 55S: Roof Lot 7
Runoff = 0.15 cfs @ 12.09 hrs, Volume= Routed to Pond 56P : Subsurface Basin Lot 7
491 cf, Depth= 3.19"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-C Rainfall=3.42"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
0.4 45 2.00 Direct Entry, Pipe Flow
Subcatchment 55S: Roof Lot 7
Page 647 Download HTML
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 55S: Roof Lot 7
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.080.000.010.00
4.000.180.000.060.00
6.000.290.000.140.00
8.000.440.000.270.00
10.000.680.000.480.01
12.001.640.001.420.09
14.002.740.002.510.01
16.002.980.002.740.00
18.003.130.002.900.00
20.003.240.003.010.00
22.003.340.003.100.00
24.003.420.003.190.00
26.003.420.003.190.00
28.003.420.003.190.00
30.003.420.003.190.00
32.003.420.003.190.00
34.003.420.003.190.00
36.003.420.003.190.00
38.003.420.003.190.00
40.003.420.003.190.00
42.003.420.003.190.00
44.003.420.003.190.00
46.003.420.003.190.00
48.003.420.003.190.00
50.003.420.003.190.00
52.003.420.003.190.00
54.003.420.003.190.00
56.003.420.003.190.00
58.003.420.003.190.00
60.003.420.003.190.00
62.003.420.003.190.00
64.003.420.003.190.00
66.003.420.003.190.00
68.003.420.003.190.00
70.003.420.003.190.00
72.003.420.003.190.00
Page 26
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 27
Summary for Pond 37P: Subsurface Basin Lot 1
Inflow Area = 1,850 sf,100.00% Impervious, Inflow Depth = 3.19" for 2 YR-C event Inflow = 0.15 cfs @ 12.09 hrs, Volume= 491 cf Outflow = 0.03 cfs @ 11.83 hrs, Volume= 491 cf, Atten=78%, Lag=0.0 min Discarded = 0.03 cfs @ 11.83 hrs, Volume= 491 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 91.36' @ 12.31 hrs Surf.Area= 0.013 ac Storage= 0.002 af Plug-Flow detention time= 11.6 min calculated for 491 cf (100% of inflow) Center-of-Mass det. time= 11.6 min (763.5 - 751.9)
VolumeInvertAvail.StorageStorage Description
#1A91.00'0.008 af10.06'W x 57.33'L x 2.17'H Field A
0.029 af Overall - 0.008 af Embedded = 0.020 af x 40.0% Voids
#2A91.33'0.006 afADS N-12 15" x 12 Inside #1 Inside = 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside = 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf Row Length Adjustment = -7.00' x 1.20 sf x 4 rows 8.72' Header x 1.20 sf x 2 = 20.9 cf Inside
0.014 af Total Available Storage
Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Discarded91.00'2.450 in/hr Exfiltration over Surface area
Discarded OutFlowMax=0.03 cfs @ 11.83 hrsHW=91.02' (Free Discharge)
1=Exfiltration (Exfiltration Controls 0.03 cfs)
Pond 37P: Subsurface Basin Lot 1
Exfiltration
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 37P: Subsurface Basin Lot 1 - Chamber Wizard Field A
Chamber Model = ADS N-12 15" (ADS N-12ยฎ Pipe) Inside= 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside= 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf Row Length Adjustment= -7.00' x 1.20 sf x 4 rows 18.0" Wide + 10.9" Spacing = 28.9" C-C Row Spacing 3 Chambers/Row x 20.00' Long -7.00' Row Adjustment +1.50' Header x 2 = 56.00' Row Length +8.0" End Stone x 2 = 57.33' Base Length 4 Rows x 18.0" Wide + 10.9" Spacing x 3 + 8.0" Side Stone x 2 = 10.06' Base Width 4.0" Stone Base + 18.0" Chamber Height + 4.0" Stone Cover = 2.17' Field Height 12 Chambers x 24.0 cf -7.00' Row Adjustment x 1.20 sf x 4 Rows + 8.72' Header x 1.20 sf x 2 = 275.3 cf Chamber Storage 12 Chambers x 31.9 cf -7.00' Row Adjustment x 1.60 sf x 4 Rows + 8.72' Header x 1.60 sf x 2 = 366.2 cf Displacement 1,248.8 cf Field - 366.2 cf Chambers = 882.6 cf Stone x 40.0% Voids = 353.0 cf Stone Storage Chamber Storage + Stone Storage = 628.4 cf = 0.014 af Overall Storage Efficiency = 50.3% Overall System Size = 57.33' x 10.06' x 2.17' 12 Chambers 46.3 cy Field 32.7 cy Stone
โ˜โ˜โ˜
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025 Page 29
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 37P: Subsurface Basin Lot 1
Pond 37P: Subsurface Basin Lot 1
โ˜ Discarded
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 37P: Subsurface Basin Lot 1
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 37P: Subsurface Basin Lot 1
Time (hours)Inflow (cfs)Storage (acre-feet)Elevation (feet)Discarded (cfs)
0.000.000.00091.000.00
2.000.000.00091.000.00
4.000.000.00091.000.00
6.000.000.00091.000.00
8.000.000.00091.000.00
10.000.010.00091.000.01
12.000.090.00191.130.03
14.000.010.00091.000.01
16.000.000.00091.000.00
18.000.000.00091.000.00
20.000.000.00091.000.00
22.000.000.00091.000.00
24.000.000.00091.000.00
26.000.000.00091.000.00
28.000.000.00091.000.00
30.000.000.00091.000.00
32.000.000.00091.000.00
34.000.000.00091.000.00
36.000.000.00091.000.00
38.000.000.00091.000.00
40.000.000.00091.000.00
42.000.000.00091.000.00
44.000.000.00091.000.00
46.000.000.00091.000.00
48.000.000.00091.000.00
50.000.000.00091.000.00
52.000.000.00091.000.00
54.000.000.00091.000.00
56.000.000.00091.000.00
58.000.000.00091.000.00
60.000.000.00091.000.00
62.000.000.00091.000.00
64.000.000.00091.000.00
66.000.000.00091.000.00
68.000.000.00091.000.00
70.000.000.00091.000.00
72.000.000.00091.000.00
Page 31
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025 Page 32
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 37P: Subsurface Basin Lot 1
Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
91.000.0092.040.03
91.020.0392.060.03
91.040.0392.080.03
91.060.0392.100.03
91.080.0392.120.03
91.100.0392.140.03
91.120.0392.160.03
91.140.0392.180.03
91.160.0392.200.03
91.180.0392.220.03
91.200.0392.240.03
91.220.0392.260.03
91.240.0392.280.03
91.260.0392.300.03
91.280.0392.320.03
91.300.0392.340.03
91.320.0392.360.03
91.340.0392.380.03
91.360.0392.400.03
91.380.0392.420.03
91.400.0392.440.03
91.420.0392.460.03
91.440.0392.480.03
91.460.0392.500.03
91.480.0392.520.03
91.500.0392.540.03
91.520.0392.560.03
91.540.0392.580.03
91.560.0392.600.03
91.580.0392.620.03
91.600.0392.640.03
91.620.0392.660.03
91.640.0392.680.03
91.660.0392.700.03
91.680.0392.720.03
91.700.0392.740.03
91.720.0392.760.03
91.740.0392.780.03
91.760.0392.800.03
91.780.0392.820.03
91.800.0392.840.03
91.820.0392.860.03
91.840.0392.880.03
91.860.0392.900.03
91.880.0392.920.03
91.900.0392.940.03
91.920.0392.960.03
91.940.0392.980.03
91.960.0393.000.03
91.980.0393.020.03
92.000.0393.040.03
92.020.0393.060.03
Elevation (feet)Discarded (cfs)
93.080.03
93.100.03
93.120.03
93.140.03
93.160.03
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025
Stage-Area-Storage for Pond 37P: Subsurface Basin Lot 1
Elevation (feet)Surface (acres)Storage (acre-feet)
91.000.0130.000
91.050.0130.000
91.100.0130.001
91.150.0130.001
91.200.0130.001
91.250.0130.001
91.300.0130.002
91.350.0130.002
91.400.0130.002
91.450.0130.002
91.500.0130.002
91.550.0130.003
91.600.0130.003
91.650.0130.004
91.700.0130.004
91.750.0130.004
91.800.0130.005
91.850.0130.005
91.900.0130.006
91.950.0130.006
92.000.0130.006
92.050.0130.007
92.100.0130.007
92.150.0130.008
92.200.0130.008
92.250.0130.009
92.300.0130.009
92.350.0130.010
92.400.0130.010
92.450.0130.010
92.500.0130.011
92.550.0130.011
92.600.0130.012
92.650.0130.012
92.700.0130.012
92.750.0130.012
92.800.0130.013
92.850.0130.013
92.900.0130.013
92.950.0130.013
93.000.0130.014
93.050.0130.014
93.100.0130.014
93.150.0130.014
Page 33
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 34
Summary for Pond 38P: Subsurface Basin Lot 8
Inflow Area = 1,850 sf, 100.00% Impervious, Inflow Depth = 3.19" for 2 YR-C event Inflow = 0.15 cfs @ 12.09 hrs, Volume= 491 cf Outflow = 0.08 cfs @ 11.97 hrs, Volume= 491 cf, Atten=47%, Lag=0.0 min Discarded = 0.08 cfs @ 11.97 hrs, Volume= 491 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 94.21' @ 12.11 hrs Surf.Area= 0.008 ac Storage= 0.001 af Plug-Flow detention time= 0.9 min calculated for 491 cf (100% of inflow) Center-of-Mass det. time= 0.9 min (752.8 - 751.9)
VolumeInvertAvail.StorageStorage Description
#1A94.00'0.005 af7.65"W x 45.33"L x 2.17"H Field A
0.017 af Overall - 0.005 af Embedded = 0.012 af x 40.0% Voids
#2A94.33'0.004 afADS N-12 15" x 6 Inside #1 Inside = 14.8"W x 14.8"H => 1.20 sf x 20.00"L = 24.0 cf Outside = 18.0"W x 18.0"H => 1.60 sf x 20.00"L = 31.9 cf Row Length Adjustment= +1.00' x 1.20 sf x 3 rows 6.31' Header x 1.20 sf x 2 = 15.2 cf Inside
0.000 afTotal Available Storage
0.009 af Total Available Storage
Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Discarded94.00'10.000 in/hr Exfiltration over Surface area
Discarded OutFlowMax=0.08 cfs @ 11.97 hrsHW=94.02' (Free Discharge)
1=Exfiltration (Exfiltration Controls 0.08 cfs)
Pond 38P: Subsurface Basin Lot 8
Exfiltration
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 38P: Subsurface Basin Lot 8 - Chamber Wizard Field A
Chamber Model = ADS N-12 15" (ADS N-12ยฎ Pipe) Inside= 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside= 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf Row Length Adjustment= +1.00' x 1.20 sf x 3 rows 18.0" Wide + 10.9" Spacing = 28.9" C-C Row Spacing 2 Chambers/Row x 20.00' Long +1.00' Row Adjustment +1.50' Header x 2 = 44.00' Row Length +8.0" End Stone x 2 = 45.33' Base Length 3 Rows x 18.0" Wide + 10.9" Spacing x 2 + 8.0" Side Stone x 2 = 7.65' Base Width 4.0" Stone Base + 18.0" Chamber Height + 4.0" Stone Cover = 2.17' Field Height 6 Chambers x 24.0 cf +1.00' Row Adjustment x 1.20 sf x 3 Rows + 6.31' Header x 1.20 sf x 2 = 162.8 cf Chamber Storage 6 Chambers x 31.9 cf +1.00' Row Adjustment x 1.60 sf x 3 Rows + 6.31' Header x 1.60 sf x 2 = 216.5 cf Displacement 751.0 cf Field - 216.5 cf Chambers = 534.5 cf Stone x 40.0% Voids = 213.8 cf Stone Storage Chamber Storage + Stone Storage = 376.6 cf = 0.009 af Overall Storage Efficiency = 50.1% Overall System Size = 45.33' x 7.65' x 2.17' 6 Chambers 27.8 cy Field 19.8 cy Stone
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025 Page 36
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 38P: Subsurface Basin Lot 8
Pond 38P: Subsurface Basin Lot 8
โ˜ Discarded
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 37
Pond 38P: Subsurface Basin Lot 8
Stage-Area-Storage
0.000 0.001 0.001 0.002 0.002 0.003 0.003 0.004 0.004 0.005 0.005 0.006 0.006 0.007 0.007 0.008 0.009 Storage (acre-feet)
Surface Storage
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 38P: Subsurface Basin Lot 8
Time (hours)Inflow (cfs)Storage (acre-feet)Elevation (feet)Discarded (cfs)
0.000.000.00094.000.00
2.000.000.00094.000.00
4.000.000.00094.000.00
6.000.000.00094.000.00
8.000.000.00094.000.00
10.000.010.00094.000.01
12.000.090.00094.030.08
14.000.010.00094.000.01
16.000.000.00094.000.00
18.000.000.00094.000.00
20.000.000.00094.000.00
22.000.000.00094.000.00
24.000.000.00094.000.00
26.000.000.00094.000.00
28.000.000.00094.000.00
30.000.000.00094.000.00
32.000.000.00094.000.00
34.000.000.00094.000.00
36.000.000.00094.000.00
38.000.000.00094.000.00
40.000.000.00094.000.00
42.000.000.00094.000.00
44.000.000.00094.000.00
46.000.000.00094.000.00
48.000.000.00094.000.00
50.000.000.00094.000.00
52.000.000.00094.000.00
54.000.000.00094.000.00
56.000.000.00094.000.00
58.000.000.00094.000.00
60.000.000.00094.000.00
62.000.000.00094.000.00
64.000.000.00094.000.00
66.000.000.00094.000.00
68.000.000.00094.000.00
70.000.000.00094.000.00
72.000.000.00094.000.00
Page 38
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 38P: Subsurface Basin Lot 8
Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
94.000.0095.040.08
94.020.0895.060.08
94.040.0895.080.08
94.060.0895.100.08
94.080.0895.120.08
94.100.0895.140.08
94.120.0895.160.08
94.140.0895.180.08
94.160.0895.200.08
94.180.0895.220.08
94.200.0895.240.08
94.220.0895.260.08
94.240.0895.280.08
94.260.0895.300.08
94.280.0895.320.08
94.300.0895.340.08
94.320.0895.360.08
94.340.0895.380.08
94.360.0895.400.08
94.380.0895.420.08
94.400.0895.440.08
94.420.0895.460.08
94.440.0895.480.08
94.460.0895.500.08
94.480.0895.520.08
94.500.0895.540.08
94.520.0895.560.08
94.540.0895.580.08
94.560.0895.600.08
94.580.0895.620.08
94.600.0895.640.08
94.620.0895.660.08
94.640.0895.680.08
94.660.0895.700.08
94.680.0895.720.08
94.700.0895.740.08
94.720.0895.760.08
94.740.0895.780.08
94.760.0895.800.08
94.780.0895.820.08
94.800.0895.840.08
94.820.0895.860.08
94.840.0895.880.08
94.860.0895.900.08
94.880.0895.920.08
94.900.0895.940.08
94.920.0895.960.08
94.940.0895.980.08
94.960.0896.000.08
94.980.0896.020.08
95.000.0896.040.08
95.020.0896.060.08
Elevation (feet)Discarded (cfs)
96.080.08
96.100.08
96.120.08
96.140.08
96.160.08
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025
Stage-Area-Storage for Pond 38P: Subsurface Basin Lot 8
Elevation (feet)Surface (acres)Storage (acre-feet)
94.000.0080.000
94.050.0080.000
94.100.0080.000
94.150.0080.000
94.200.0080.001
94.250.0080.001
94.300.0080.001
94.350.0080.001
94.400.0080.001
94.450.0080.001
94.500.0080.002
94.550.0080.002
94.600.0080.002
94.650.0080.002
94.700.0080.002
94.750.0080.003
94.800.0080.003
94.850.0080.003
94.900.0080.003
94.950.0080.004
95.000.0080.004
95.050.0080.004
95.100.0080.004
95.150.0080.005
95.200.0080.005
95.250.0080.005
95.300.0080.005
95.350.0080.006
95.400.0080.006
95.450.0080.006
95.500.0080.006
95.550.0080.007
95.600.0080.007
95.650.0080.007
95.700.0080.007
95.750.0080.007
95.800.0080.007
95.850.0080.008
95.900.0080.008
95.950.0080.008
96.000.0080.008
96.050.0080.008
96.100.0080.008
96.150.0080.009
Page 40
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
R-C Rainfall=3.42" Printed 10/24/2025 Page 41
Summary for Pond 39P: Subsurface Basin Lot 2
Inflow Area = 1,850 sf, 100.00% Impervious, Inflow Depth = 3.19" for 2 YR-C event Inflow = 0.15 cfs @ 12.09 hrs, Volume= 491 cf Outflow = 0.07 cfs @ 11.94 hrs, Volume= 491 cf, Atten= 55%, Lag= 0.0 min Discarded = 0.07 cfs @ 11.94 hrs, Volume= 491 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 93.25' @ 12.12 hrs Surf.Area= 0.009 ac Storage= 0.001 af Plug-Flow detention time= 1.6 min calculated for 491 cf (100% of inflow) Center-of-Mass det. time= 1.6 min (753.5 - 751.9)
VolumeInvertAvail.StorageStorage Description
#1A93.00'0.005 af7.65"W x 49.33"L x 2.17"H Field A
0.019 af Overall - 0.005 af Embedded = 0.013 af x 40.0% Voids
#2A93.33'0.004 afADS N-12 15" x 6 Inside #1 Inside = 14.8"W x 14.8"H => 1.20 sf x 20.00"L = 24.0 cf Outside = 18.0"W x 18.0"H => 1.60 sf x 20.00"L = 31.9 cf Row Length Adjustment= +5.00' x 1.20 sf x 3 rows 6.31' Header x 1.20 sf x 2 = 15.2 cf Inside
0.009 af Total Available Storage
Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Discarded93.00'7.850 in/hr Exfiltration over Surface area
Discarded OutFlowMax=0.07 cfs @ 11.94 hrsHW=93.02' (Free Discharge)
1=Exfiltration (Exfiltration Controls 0.07 cfs)
Pond 39P: Subsurface Basin Lot 2
Exfiltration
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 39P: Subsurface Basin Lot 2 - Chamber Wizard Field A
Chamber Model = ADS N-12 15" (ADS N-12ยฎ Pipe) Inside= 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside= 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf Row Length Adjustment= +5.00' x 1.20 sf x 3 rows 18.0" Wide + 10.9" Spacing = 28.9" C-C Row Spacing 2 Chambers/Row x 20.00' Long +5.00' Row Adjustment +1.50' Header x 2 = 48.00' Row Length +8.0" End Stone x 2 = 49.33' Base Length 3 Rows x 18.0" Wide + 10.9" Spacing x 2 + 8.0" Side Stone x 2 = 7.65' Base Width 4.0" Stone Base + 18.0" Chamber Height + 4.0" Stone Cover = 2.17' Field Height 6 Chambers x 24.0 cf +5.00' Row Adjustment x 1.20 sf x 3 Rows + 6.31' Header x 1.20 sf x 2 = 177.2 cf Chamber Storage 6 Chambers x 31.9 cf +5.00' Row Adjustment x 1.60 sf x 3 Rows + 6.31' Header x 1.60 sf x 2 = 235.7 cf Displacement 817.3 cf Field - 235.7 cf Chambers = 581.6 cf Stone x 40.0% Voids = 232.6 cf Stone Storage Chamber Storage + Stone Storage = 409.8 cf = 0.009 af Overall Storage Efficiency = 50.1% Overall System Size = 49.33' x 7.65' x 2.17' 6 Chambers 30.3 cy Field 21.5 cy Stone
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025 Page 43
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 39P: Subsurface Basin Lot 2
Pond 39P: Subsurface Basin Lot 2
โ˜ Discarded
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 44
Pond 39P: Subsurface Basin Lot 2
Stage-Area-Storage
0 0.000 0.001 0.001 0.002 0.002 0.003 0.003 0.004 0.004 0.005 0.005 0.006 0.006 0.007 0.007 0.008 0.009 0.009 Storage (acre-feet)
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 39P: Subsurface Basin Lot 2
Time (hours)Inflow (cfs)Storage (acre-feet)Elevation (feet)Discarded (cfs)
0.000.000.00093.000.00
2.000.000.00093.000.00
4.000.000.00093.000.00
6.000.000.00093.000.00
8.000.000.00093.000.00
10.000.010.00093.000.01
12.000.090.00093.050.07
14.000.010.00093.000.01
16.000.000.00093.000.00
18.000.000.00093.000.00
20.000.000.00093.000.00
22.000.000.00093.000.00
24.000.000.00093.000.00
26.000.000.00093.000.00
28.000.000.00093.000.00
30.000.000.00093.000.00
32.000.000.00093.000.00
34.000.000.00093.000.00
36.000.000.00093.000.00
38.000.000.00093.000.00
40.000.000.00093.000.00
42.000.000.00093.000.00
44.000.000.00093.000.00
46.000.000.00093.000.00
48.000.000.00093.000.00
50.000.000.00093.000.00
52.000.000.00093.000.00
54.000.000.00093.000.00
56.000.000.00093.000.00
58.000.000.00093.000.00
60.000.000.00093.000.00
62.000.000.00093.000.00
64.000.000.00093.000.00
66.000.000.00093.000.00
68.000.000.00093.000.00
70.000.000.00093.000.00
72.000.000.00093.000.00
Page 45
Page 667 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025 Page 46
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 39P: Subsurface Basin Lot 2
Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
93.000.0094.040.07
93.020.0794.060.07
93.040.0794.080.07
93.060.0794.100.07
93.080.0794.120.07
93.100.0794.140.07
93.120.0794.160.07
93.140.0794.180.07
93.160.0794.200.07
93.180.0794.220.07
93.200.0794.240.07
93.220.0794.260.07
93.240.0794.280.07
93.260.0794.300.07
93.280.0794.320.07
93.300.0794.340.07
93.320.0794.360.07
93.340.0794.380.07
93.360.0794.400.07
93.380.0794.420.07
93.400.0794.440.07
93.420.0794.460.07
93.440.0794.480.07
93.460.0794.500.07
93.480.0794.520.07
93.500.0794.540.07
93.520.0794.560.07
93.540.0794.580.07
93.560.0794.600.07
93.580.0794.620.07
93.600.0794.640.07
93.620.0794.660.07
93.640.0794.680.07
93.660.0794.700.07
93.680.0794.720.07
93.700.0794.740.07
93.720.0794.760.07
93.740.0794.780.07
93.760.0794.800.07
93.780.0794.820.07
93.800.0794.840.07
93.820.0794.860.07
93.840.0794.880.07
93.860.0794.900.07
93.880.0794.920.07
93.900.0794.940.07
93.920.0794.960.07
93.940.0794.980.07
93.960.0795.000.07
93.980.0795.020.07
94.000.0795.040.07
94.020.0795.060.07
Elevation (feet)Discarded (cfs)
95.080.07
95.100.07
95.120.07
95.140.07
95.160.07
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Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025
Stage-Area-Storage for Pond 39P: Subsurface Basin Lot 2
Elevation (feet)Surface (acres)Storage (acre-feet)
93.000.0090.000
93.050.0090.000
93.100.0090.000
93.150.0090.001
93.200.0090.001
93.250.0090.001
93.300.0090.001
93.350.0090.001
93.400.0090.001
93.450.0090.001
93.500.0090.002
93.550.0090.002
93.600.0090.002
93.650.0090.002
93.700.0090.003
93.750.0090.003
93.800.0090.003
93.850.0090.003
93.900.0090.004
93.950.0090.004
94.000.0090.004
94.050.0090.005
94.100.0090.005
94.150.0090.005
94.200.0090.005
94.250.0090.006
94.300.0090.006
94.350.0090.006
94.400.0090.007
94.450.0090.007
94.500.0090.007
94.550.0090.007
94.600.0090.008
94.650.0090.008
94.700.0090.008
94.750.0090.008
94.800.0090.008
94.850.0090.008
94.900.0090.008
94.950.0090.009
95.000.0090.009
95.050.0090.009
95.100.0090.009
95.150.0090.009
Page 47
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025
R-C Rainfall=3.42" Printed 10/24/2025 Page 48
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 41P: Subsurface Basin Lot 9
Inflow Area = 1,850 sf,100.00% Impervious, Inflow Depth = 3.19" for 2 YR-C event Inflow = 0.15 cfs @ 12.09 hrs, Volume= 491 cf Outflow = 0.07 cfs @ 11.94 hrs, Volume= 491 cf, Atten=55%, Lag=0.0 min Discarded = 0.07 cfs @ 11.94 hrs, Volume= 491 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 93.26' @ 12.12 hrs Surf.Area= 0.008 ac Storage= 0.001 af Plug-Flow detention time= 1.6 min calculated for 491 cf (100% of inflow) Center-of-Mass det. time= 1.6 min (753.5 - 751.9)
VolumeInvertAvail.StorageStorage Description
#1A93.00'0.005 af7.65"W x 48.33"L x 2.17"H Field A
0.018 af Overall - 0.005 af Embedded = 0.013 af x 40.0% Voids
#2A93.33'0.004 afADS N-12 15" x 6 Inside #1 Inside = 14.8"W x 14.8"H => 1.20 sf x 20.00"L = 24.0 cf Outside = 18.0"W x 18.0"H => 1.60 sf x 20.00"L = 31.9 cf Row Length Adjustment= +4.00' x 1.20 sf x 3 rows 6.31' Header x 1.20 sf x 2 = 15.2 cf Inside
0.009 af Total Available Storage
Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Discarded93.00'8.000 in/hr Exfiltration over Surface area
Discarded OutFlowMax=0.07 cfs @ 11.94 hrsHW=93.02' (Free Discharge)
1=Exfiltration (Exfiltration Controls 0.07 cfs)
Pond 41P: Subsurface Basin Lot 9
Exfiltration
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 41P: Subsurface Basin Lot 9 - Chamber Wizard Field A
Chamber Model = ADS N-12 15" (ADS N-12ยฎ Pipe) Inside= 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside= 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf Row Length Adjustment= +4.00' x 1.20 sf x 3 rows 18.0" Wide + 10.9" Spacing = 28.9" C-C Row Spacing 2 Chambers/Row x 20.00' Long +4.00' Row Adjustment +1.50' Header x 2 = 47.00' Row Length +8.0" End Stone x 2 = 48.33' Base Length 3 Rows x 18.0" Wide + 10.9" Spacing x 2 + 8.0" Side Stone x 2 = 7.65' Base Width 4.0" Stone Base + 18.0" Chamber Height + 4.0" Stone Cover = 2.17' Field Height 6 Chambers x 24.0 cf +4.00' Row Adjustment x 1.20 sf x 3 Rows + 6.31' Header x 1.20 sf x 2 = 173.6 cf Chamber Storage 6 Chambers x 31.9 cf +4.00' Row Adjustment x 1.60 sf x 3 Rows + 6.31' Header x 1.60 sf x 2 = 230.9 cf Displacement 800.7 cf Field - 230.9 cf Chambers = 569.8 cf Stone x 40.0% Voids = 227.9 cf Stone Storage Chamber Storage + Stone Storage = 401.5 cf = 0.009 af Overall Storage Efficiency = 50.1% Overall System Size = 48.33' x 7.65' x 2.17' 6 Chambers 29.7 cy Field 21.1 cy Stone
โ—‹โ—‹โ—‹
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025 Page 50
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 41P: Subsurface Basin Lot 9
Pond 41P: Subsurface Basin Lot 9
โ˜ Discarded
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 51
Pond 41P: Subsurface Basin Lot 9
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025
2 YR-C Rainfall=3.42" Printed 10/24/2025 Page 52
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 41P: Subsurface Basin Lot 9
Time (hours)Inflow (cfs)Storage (acre-feet)Elevation (feet)Discarded (cfs)
0.000.000.00093.000.00
2.000.000.00093.000.00
4.000.000.00093.000.00
6.000.000.00093.000.00
8.000.000.00093.000.00
10.000.010.00093.000.01
12.000.090.00093.050.07
14.000.010.00093.000.01
16.000.000.00093.000.00
18.000.000.00093.000.00
20.000.000.00093.000.00
22.000.000.00093.000.00
24.000.000.00093.000.00
26.000.000.00093.000.00
28.000.000.00093.000.00
30.000.000.00093.000.00
32.000.000.00093.000.00
34.000.000.00093.000.00
36.000.000.00093.000.00
38.000.000.00093.000.00
40.000.000.00093.000.00
42.000.000.00093.000.00
44.000.000.00093.000.00
46.000.000.00093.000.00
48.000.000.00093.000.00
50.000.000.00093.000.00
52.000.000.00093.000.00
54.000.000.00093.000.00
56.000.000.00093.000.00
58.000.000.00093.000.00
60.000.000.00093.000.00
62.000.000.00093.000.00
64.000.000.00093.000.00
66.000.000.00093.000.00
68.000.000.00093.000.00
70.000.000.00093.000.00
72.000.000.00093.000.00
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025 Page 53
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 41P: Subsurface Basin Lot 9
Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
93.000.0094.040.07
93.020.0794.060.07
93.040.0794.080.07
93.060.0794.100.07
93.080.0794.120.07
93.100.0794.140.07
93.120.0794.160.07
93.140.0794.180.07
93.160.0794.200.07
93.180.0794.220.07
93.200.0794.240.07
93.220.0794.260.07
93.240.0794.280.07
93.260.0794.300.07
93.280.0794.320.07
93.300.0794.340.07
93.320.0794.360.07
93.340.0794.380.07
93.360.0794.400.07
93.380.0794.420.07
93.400.0794.440.07
93.420.0794.460.07
93.440.0794.480.07
93.460.0794.500.07
93.480.0794.520.07
93.500.0794.540.07
93.520.0794.560.07
93.540.0794.580.07
93.560.0794.600.07
93.580.0794.620.07
93.600.0794.640.07
93.620.0794.660.07
93.640.0794.680.07
93.660.0794.700.07
93.680.0794.720.07
93.700.0794.740.07
93.720.0794.760.07
93.740.0794.780.07
93.760.0794.800.07
93.780.0794.820.07
93.800.0794.840.07
93.820.0794.860.07
93.840.0794.880.07
93.860.0794.900.07
93.880.0794.920.07
93.900.0794.940.07
93.920.0794.960.07
93.940.0794.980.07
93.960.0795.000.07
93.980.0795.020.07
94.000.0795.040.07
94.020.0795.060.07
Elevation (feet)Discarded (cfs)
95.080.07
95.100.07
95.120.07
95.140.07
95.160.07
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025 Page 54
Stage-Area-Storage for Pond 41P: Subsurface Basin Lot 9
Elevation (feet)Surface (acres)Storage (acre-feet)
93.000.0080.000
93.050.0080.000
93.100.0080.000
93.150.0080.001
93.200.0080.001
93.250.0080.001
93.300.0080.001
93.350.0080.001
93.400.0080.001
93.450.0080.001
93.500.0080.002
93.550.0080.002
93.600.0080.002
93.650.0080.002
93.700.0080.003
93.750.0080.003
93.800.0080.003
93.850.0080.003
93.900.0080.004
93.950.0080.004
94.000.0080.004
94.050.0080.004
94.100.0080.005
94.150.0080.005
94.200.0080.005
94.250.0080.006
94.300.0080.006
94.350.0080.006
94.400.0080.006
94.450.0080.007
94.500.0080.007
94.550.0080.007
94.600.0080.007
94.650.0080.008
94.700.0080.008
94.750.0080.008
94.800.0080.008
94.850.0080.008
94.900.0080.008
94.950.0080.008
95.000.0080.009
95.050.0080.009
95.100.0080.009
95.150.0080.009
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025 Page 55
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 43P: Subsurface Basin Lot 10
Inflow Area = 1,850 sf,100.00% Impervious, Inflow Depth = 3.19" for 2 YR-C event Inflow = 0.15 cfs @ 12.09 hrs, Volume= 491 cf Outflow = 0.08 cfs @ 11.97 hrs, Volume= 491 cf, Atten=47%, Lag=0.0 min Discarded = 0.08 cfs @ 11.97 hrs, Volume= 491 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 92.21' @ 12.11 hrs Surf.Area= 0.008 ac Storage= 0.001 af Plug-Flow detention time= 0.9 min calculated for 491 cf (100% of inflow) Center-of-Mass det. time= 0.9 min (752.8 - 751.9)
VolumeInvertAvail.StorageStorage Description
#1A92.00'0.005 af7.65"W x 45.33"L x 2.17"H Field A
0.017 af Overall - 0.005 af Embedded = 0.012 af x 40.0% Voids
#2A92.33'0.004 afADS N-12 15" x 6 Inside #1 Inside = 14.8"W x 14.8"H => 1.20 sf x 20.00"L = 24.0 cf Outside = 18.0"W x 18.0"H => 1.60 sf x 20.00"L = 31.9 cf Row Length Adjustment= +1.00' x 1.20 sf x 3 rows 6.31' Header x 1.20 sf x 2 = 15.2 cf Inside
0.009 af Total Available Storage
Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Discarded92.00'10.000 in/hr Exfiltration over Surface area
Discarded OutFlowMax=0.08 cfs @ 11.97 hrsHW=92.02' (Free Discharge)
1=Exfiltration (Exfiltration Controls 0.08 cfs)
Pond 43P: Subsurface Basin Lot 10
Exfiltration
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 43P: Subsurface Basin Lot 10 - Chamber Wizard Field A
Chamber Model = ADS N-12 15" (ADS N-12ยฎ Pipe) Inside= 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside= 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf Row Length Adjustment= +1.00' x 1.20 sf x 3 rows 18.0" Wide + 10.9" Spacing = 28.9" C-C Row Spacing 2 Chambers/Row x 20.00' Long +1.00' Row Adjustment +1.50' Header x 2 = 44.00' Row Length +8.0" End Stone x 2 = 45.33' Base Length 3 Rows x 18.0" Wide + 10.9" Spacing x 2 + 8.0" Side Stone x 2 = 7.65' Base Width 4.0" Stone Base + 18.0" Chamber Height + 4.0" Stone Cover = 2.17' Field Height 6 Chambers x 24.0 cf +1.00' Row Adjustment x 1.20 sf x 3 Rows + 6.31' Header x 1.20 sf x 2 = 162.8 cf Chamber Storage 6 Chambers x 31.9 cf +1.00' Row Adjustment x 1.60 sf x 3 Rows + 6.31' Header x 1.60 sf x 2 = 216.5 cf Displacement 751.0 cf Field - 216.5 cf Chambers = 534.5 cf Stone x 40.0% Voids = 213.8 cf Stone Storage Chamber Storage + Stone Storage = 376.6 cf = 0.009 af Overall Storage Efficiency = 50.1% Overall System Size = 45.33' x 7.65' x 2.17' 6 Chambers 27.8 cy Field 19.8 cy Stone
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025 Page 57
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 43P: Subsurface Basin Lot 10
Pond 43P: Subsurface Basin Lot 10
โ˜ Discarded
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 58
Pond 43P: Subsurface Basin Lot 10
Stage-Area-Storage
0.000 0.001 0.001 0.002 0.002 0.003 0.003 0.004 0.004 0.005 0.005 0.006 0.006 0.007 0.007 0.008 0.009 Storage (acre-feet)
Surface Storage
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 43P: Subsurface Basin Lot 10
Time (hours)Inflow (cfs)Storage (acre-feet)Elevation (feet)Discarded (cfs)
0.000.000.00092.000.00
2.000.000.00092.000.00
4.000.000.00092.000.00
6.000.000.00092.000.00
8.000.000.00092.000.00
10.000.010.00092.000.01
12.000.090.00092.030.08
14.000.010.00092.000.01
16.000.000.00092.000.00
18.000.000.00092.000.00
20.000.000.00092.000.00
22.000.000.00092.000.00
24.000.000.00092.000.00
26.000.000.00092.000.00
28.000.000.00092.000.00
30.000.000.00092.000.00
32.000.000.00092.000.00
34.000.000.00092.000.00
36.000.000.00092.000.00
38.000.000.00092.000.00
40.000.000.00092.000.00
42.000.000.00092.000.00
44.000.000.00092.000.00
46.000.000.00092.000.00
48.000.000.00092.000.00
50.000.000.00092.000.00
52.000.000.00092.000.00
54.000.000.00092.000.00
56.000.000.00092.000.00
58.000.000.00092.000.00
60.000.000.00092.000.00
62.000.000.00092.000.00
64.000.000.00092.000.00
66.000.000.00092.000.00
68.000.000.00092.000.00
70.000.000.00092.000.00
72.000.000.00092.000.00
Page 59
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025 Page 60
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 43P: Subsurface Basin Lot 10
Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
92.000.0093.040.08
92.020.0893.060.08
92.040.0893.080.08
92.060.0893.100.08
92.080.0893.120.08
92.100.0893.140.08
92.120.0893.160.08
92.140.0893.180.08
92.160.0893.200.08
92.180.0893.220.08
92.200.0893.240.08
92.220.0893.260.08
92.240.0893.280.08
92.260.0893.300.08
92.280.0893.320.08
92.300.0893.340.08
92.320.0893.360.08
92.340.0893.380.08
92.360.0893.400.08
92.380.0893.420.08
92.400.0893.440.08
92.420.0893.460.08
92.440.0893.480.08
92.460.0893.500.08
92.480.0893.520.08
92.500.0893.540.08
92.520.0893.560.08
92.540.0893.580.08
92.560.0893.600.08
92.580.0893.620.08
92.600.0893.640.08
92.620.0893.660.08
92.640.0893.680.08
92.660.0893.700.08
92.680.0893.720.08
92.700.0893.740.08
92.720.0893.760.08
92.740.0893.780.08
92.760.0893.800.08
92.780.0893.820.08
92.800.0893.840.08
92.820.0893.860.08
92.840.0893.880.08
92.860.0893.900.08
92.880.0893.920.08
92.900.0893.940.08
92.920.0893.960.08
92.940.0893.980.08
92.960.0894.000.08
92.980.0894.020.08
93.000.0894.040.08
93.020.0894.060.08
Elevation (feet)Discarded (cfs)
94.080.08
94.100.08
94.120.08
94.140.08
94.160.08
Page 682 Download HTML
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025 Page 61
Stage-Area-Storage for Pond 43P: Subsurface Basin Lot 10
Elevation (feet)Surface (acres)Storage (acre-feet)
92.000.0080.000
92.050.0080.000
92.100.0080.000
92.150.0080.000
92.200.0080.001
92.250.0080.001
92.300.0080.001
92.350.0080.001
92.400.0080.001
92.450.0080.001
92.500.0080.002
92.550.0080.002
92.600.0080.002
92.650.0080.002
92.700.0080.002
92.750.0080.003
92.800.0080.003
92.850.0080.003
92.900.0080.003
92.950.0080.004
93.000.0080.004
93.050.0080.004
93.100.0080.004
93.150.0080.005
93.200.0080.005
93.250.0080.005
93.300.0080.005
93.350.0080.006
93.400.0080.006
93.450.0080.006
93.500.0080.006
93.550.0080.007
93.600.0080.007
93.650.0080.007
93.700.0080.007
93.750.0080.007
93.800.0080.007
93.850.0080.008
93.900.0080.008
93.950.0080.008
94.000.0080.008
94.050.0080.008
94.100.0080.008
94.150.0080.009
Page 61
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 62
Summary for Pond 46P: Subsurface Basin Lot 3
Inflow Area = 1,850 sf,100.00% Impervious, Inflow Depth = 3.19" for 2 YR-C event Inflow = 0.15 cfs @ 12.09 hrs, Volume= 491 cf Outflow = 0.05 cfs @ 11.91 hrs, Volume= 491 cf, Atten=70%, Lag=0.0 min Discarded = 0.05 cfs @ 11.91 hrs, Volume= 491 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 93.30' @ 12.21 hrs Surf.Area= 0.011 ac Storage= 0.001 af Plug-Flow detention time= 4.9 min calculated for 491 cf (100% of inflow) Center-of-Mass det. time= 4.9 min (756.8 - 751.9)
VolumeInvertAvail.StorageStorage Description
#1A93.00'0.007 af7.65"W x 64.33"L x 2.17"H Field A 0.024 af Overall - 0.007 af Embedded = 0.017 af x 40.0% Voids
#2A93.33'0.005 afADS N-12 15" x 9 Inside #1 Inside = 14.8"W x 14.8"H => 1.20 sf x 20.00"L = 24.0 cf Outside = 18.0"W x 18.0"H => 1.60 sf x 20.00"L = 31.9 cf 9 Chambers in 3 Rows 6.31' Header x 1.20 sf x 2 = 15.2 cf Inside
0.012 cfTotal Available Storage
0.012 af Total Available Storage
Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Discarded93.00'4.050 in/hr Exfiltration over Surface area
Discarded OutFlowMax=0.05 cfs @ 11.91 hrs HW=93.02' (Free Discharge)
1=Exfiltration (Exfiltration Controls 0.05 cfs)
Pond 46P: Subsurface Basin Lot 3
Exfiltration
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025 Page 63
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 46P: Subsurface Basin Lot 3 - Chamber Wizard Field A
Chamber Model = ADS N-12 15" (ADS N-12ยฎ Pipe) Inside= 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside= 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf 18.0" Wide + 10.9" Spacing = 28.9" C-C Row Spacing 3 Chambers/Row x 20.00' Long +1.50' Header x 2 = 63.00' Row Length +8.0" End Stone x 2 = 64.33' Base Length 3 Rows x 18.0" Wide + 10.9" Spacing x 2 + 8.0" Side Stone x 2 = 7.65' Base Width 4.0" Stone Base + 18.0" Chamber Height + 4.0" Stone Cover = 2.17' Field Height 9 Chambers x 24.0 cf + 6.31' Header x 1.20 sf x 2 = 231.2 cf Chamber Storage 9 Chambers x 31.9 cf + 6.31' Header x 1.60 sf x 2 = 307.5 cf Displacement 1,065.8 cf Field - 307.5 cf Chambers = 758.3 cf Stone x 40.0% Voids = 303.3 cf Stone Storage Chamber Storage + Stone Storage = 534.5 cf = 0.012 af Overall Storage Efficiency = 50.1% Overall System Size = 64.33' x 7.65' x 2.17' 9 Chambers 39.5 cy Field 28.1 cy Stone
Page 685 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025 Page 64
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 46P: Subsurface Basin Lot 3
Pond 46P: Subsurface Basin Lot 3
Stage-Discharge
โ˜ Discarded
Page 686 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025 Page 65
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 46P: Subsurface Basin Lot 3
Page 687 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 46P: Subsurface Basin Lot 3
Time (hours)Inflow (cfs)Storage (acre-feet)Elevation (feet)Discarded (cfs)
0.000.000.00093.000.00
2.000.000.00093.000.00
4.000.000.00093.000.00
6.000.000.00093.000.00
8.000.000.00093.000.00
10.000.010.00093.000.01
12.000.090.00093.090.05
14.000.010.00093.000.01
16.000.000.00093.000.00
18.000.000.00093.000.00
20.000.000.00093.000.00
22.000.000.00093.000.00
24.000.000.00093.000.00
26.000.000.00093.000.00
28.000.000.00093.000.00
30.000.000.00093.000.00
32.000.000.00093.000.00
34.000.000.00093.000.00
36.000.000.00093.000.00
38.000.000.00093.000.00
40.000.000.00093.000.00
42.000.000.00093.000.00
44.000.000.00093.000.00
46.000.000.00093.000.00
48.000.000.00093.000.00
50.000.000.00093.000.00
52.000.000.00093.000.00
54.000.000.00093.000.00
56.000.000.00093.000.00
58.000.000.00093.000.00
60.000.000.00093.000.00
62.000.000.00093.000.00
64.000.000.00093.000.00
66.000.000.00093.000.00
68.000.000.00093.000.00
70.000.000.00093.000.00
72.000.000.00093.000.00
Page 66
Page 688 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025 Page 67
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 46P: Subsurface Basin Lot 3
Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
93.000.0094.040.05
93.020.0594.060.05
93.040.0594.080.05
93.060.0594.100.05
93.080.0594.120.05
93.100.0594.140.05
93.120.0594.160.05
93.140.0594.180.05
93.160.0594.200.05
93.180.0594.220.05
93.200.0594.240.05
93.220.0594.260.05
93.240.0594.280.05
93.260.0594.300.05
93.280.0594.320.05
93.300.0594.340.05
93.320.0594.360.05
93.340.0594.380.05
93.360.0594.400.05
93.380.0594.420.05
93.400.0594.440.05
93.420.0594.460.05
93.440.0594.480.05
93.460.0594.500.05
93.480.0594.520.05
93.500.0594.540.05
93.520.0594.560.05
93.540.0594.580.05
93.560.0594.600.05
93.580.0594.620.05
93.600.0594.640.05
93.620.0594.660.05
93.640.0594.680.05
93.660.0594.700.05
93.680.0594.720.05
93.700.0594.740.05
93.720.0594.760.05
93.740.0594.780.05
93.760.0594.800.05
93.780.0594.820.05
93.800.0594.840.05
93.820.0594.860.05
93.840.0594.880.05
93.860.0594.900.05
93.880.0594.920.05
93.900.0594.940.05
93.920.0594.960.05
93.940.0594.980.05
93.960.0595.000.05
93.980.0595.020.05
94.000.0595.040.05
94.020.0595.060.05
Elevation (feet)Discarded (cfs)
95.080.05
95.100.05
95.120.05
95.140.05
95.160.05
Page 689 Download HTML
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025 Page 68
Stage-Area-Storage for Pond 46P: Subsurface Basin Lot 3
Elevation (feet)Surface (acres)Storage (acre-feet)
93.000.0110.000
93.050.0110.000
93.100.0110.000
93.150.0110.001
93.200.0110.001
93.250.0110.001
93.300.0110.001
93.350.0110.002
93.400.0110.002
93.450.0110.002
93.500.0110.002
93.550.0110.002
93.600.0110.003
93.650.0110.003
93.700.0110.003
93.750.0110.004
93.800.0110.004
93.850.0110.004
93.900.0110.005
93.950.0110.005
94.000.0110.006
94.050.0110.006
94.100.0110.006
94.150.0110.007
94.200.0110.007
94.250.0110.007
94.300.0110.008
94.350.0110.008
94.400.0110.008
94.450.0110.009
94.500.0110.009
94.550.0110.009
94.600.0110.010
94.650.0110.010
94.700.0110.010
94.750.0110.010
94.800.0110.011
94.850.0110.011
94.900.0110.011
94.950.0110.011
95.000.0110.012
95.050.0110.012
95.100.0110.012
95.150.0110.012
Page 690 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025 Page 69
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 50P: Subsurface Basin Lot 4
Inflow Area = 1,850 sf,100.00% Impervious, Inflow Depth = 3.19" for 2 YR-C event Inflow = 0.15 cfs @ 12.09 hrs, Volume= 491 cf Outflow = 0.05 cfs @ 11.91 hrs, Volume= 491 cf, Atten=70%, Lag=0.0 min Discarded = 0.05 cfs @ 11.91 hrs, Volume= 491 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 93.30' @ 12.21 hrs Surf.Area= 0.011 ac Storage= 0.001 af Plug-Flow detention time= 4.9 min calculated for 491 cf (100% of inflow) Center-of-Mass det. time= 4.9 min (756.8 - 751.9)
VolumeInvertAvail.StorageStorage Description
#1A93.00'0.007 af7.65"W x 64.33"L x 2.17"H Field A
0.024 af Overall - 0.007 af Embedded = 0.017 af x 40.0% Voids
#2A93.33'0.005 afADS N-12 15" x 9 Inside #1 Inside = 14.8"W x 14.8"H => 1.20 sf x 20.00"L = 24.0 cf Outside = 18.0"W x 18.0"H => 1.60 sf x 20.00"L = 31.9 cf 9 Chambers in 3 Rows 6.31' Header x 1.20 sf x 2 = 15.2 cf Inside
Total Available Storage
0.012 af Total Available Storage
Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Discarded93.00'4.050 in/hr Exfiltration over Surface area
Discarded OutFlowMax=0.05 cfs @ 11.91 hrsHW=93.02' (Free Discharge)
1=Exfiltration (Exfiltration Controls 0.05 cfs)
Pond 50P: Subsurface Basin Lot 4
Exfiltration
Page 691 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025 Page 70
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 50P: Subsurface Basin Lot 4 - Chamber Wizard Field A
Chamber Model = ADS N-12 15" (ADS N-12ยฎ Pipe) Inside= 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside= 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf 18.0" Wide + 10.9" Spacing = 28.9" C-C Row Spacing 3 Chambers/Row x 20.00' Long +1.50' Header x 2 = 63.00' Row Length +8.0" End Stone x 2 = 64.33' Base Length 3 Rows x 18.0" Wide + 10.9" Spacing x 2 + 8.0" Side Stone x 2 = 7.65' Base Width 4.0" Stone Base + 18.0" Chamber Height + 4.0" Stone Cover = 2.17' Field Height 9 Chambers x 24.0 cf + 6.31' Header x 1.20 sf x 2 = 231.2 cf Chamber Storage 9 Chambers x 31.9 cf + 6.31' Header x 1.60 sf x 2 = 307.5 cf Displacement 1,065.8 cf Field - 307.5 cf Chambers = 758.3 cf Stone x 40.0% Voids = 303.3 cf Stone Storage Chamber Storage + Stone Storage = 534.5 cf = 0.012 af Overall Storage Efficiency = 50.1% Overall System Size = 64.33' x 7.65' x 2.17' 9 Chambers 39.5 cy Field 28.1 cy Stone
Page 692 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 71
Pond 50P: Subsurface Basin Lot 4
Pond 50P: Subsurface Basin Lot 4
Stage-Discharge
โ˜ Discarded
Page 693 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 72
Pond 50P: Subsurface Basin Lot 4
Page 694 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 50P: Subsurface Basin Lot 4
Time (hours)Inflow (cfs)Storage (acre-feet)Elevation (feet)Discarded (cfs)
0.000.000.00093.000.00
2.000.000.00093.000.00
4.000.000.00093.000.00
6.000.000.00093.000.00
8.000.000.00093.000.00
10.000.010.00093.000.01
12.000.090.00093.090.05
14.000.010.00093.000.01
16.000.000.00093.000.00
18.000.000.00093.000.00
20.000.000.00093.000.00
22.000.000.00093.000.00
24.000.000.00093.000.00
26.000.000.00093.000.00
28.000.000.00093.000.00
30.000.000.00093.000.00
32.000.000.00093.000.00
34.000.000.00093.000.00
36.000.000.00093.000.00
38.000.000.00093.000.00
40.000.000.00093.000.00
42.000.000.00093.000.00
44.000.000.00093.000.00
46.000.000.00093.000.00
48.000.000.00093.000.00
50.000.000.00093.000.00
52.000.000.00093.000.00
54.000.000.00093.000.00
56.000.000.00093.000.00
58.000.000.00093.000.00
60.000.000.00093.000.00
62.000.000.00093.000.00
64.000.000.00093.000.00
66.000.000.00093.000.00
68.000.000.00093.000.00
70.000.000.00093.000.00
72.000.000.00093.000.00
Page 73
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 50P: Subsurface Basin Lot 4
Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
93.000.0094.040.05
93.020.0594.060.05
93.040.0594.080.05
93.060.0594.100.05
93.080.0594.120.05
93.100.0594.140.05
93.120.0594.160.05
93.140.0594.180.05
93.160.0594.200.05
93.180.0594.220.05
93.200.0594.240.05
93.220.0594.260.05
93.240.0594.280.05
93.260.0594.300.05
93.280.0594.320.05
93.300.0594.340.05
93.320.0594.360.05
93.340.0594.380.05
93.360.0594.400.05
93.380.0594.420.05
93.400.0594.440.05
93.420.0594.460.05
93.440.0594.480.05
93.460.0594.500.05
93.480.0594.520.05
93.500.0594.540.05
93.520.0594.560.05
93.540.0594.580.05
93.560.0594.600.05
93.580.0594.620.05
93.600.0594.640.05
93.620.0594.660.05
93.640.0594.680.05
93.660.0594.700.05
93.680.0594.720.05
93.700.0594.740.05
93.720.0594.760.05
93.740.0594.780.05
93.760.0594.800.05
93.780.0594.820.05
93.800.0594.840.05
93.820.0594.860.05
93.840.0594.880.05
93.860.0594.900.05
93.880.0594.920.05
93.900.0594.940.05
93.920.0594.960.05
93.940.0594.980.05
93.960.0595.000.05
93.980.0595.020.05
94.000.0595.040.05
94.020.0595.060.05
Elevation (feet)Discarded (cfs)
95.080.05
95.100.05
95.120.05
95.140.05
95.160.05
Page 74
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Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025
Stage-Area-Storage for Pond 50P: Subsurface Basin Lot 4
Elevation (feet)Surface (acres)Storage (acre-feet)
93.000.0110.000
93.050.0110.000
93.100.0110.000
93.150.0110.001
93.200.0110.001
93.250.0110.001
93.300.0110.001
93.350.0110.002
93.400.0110.002
93.450.0110.002
93.500.0110.002
93.550.0110.002
93.600.0110.003
93.650.0110.003
93.700.0110.003
93.750.0110.004
93.800.0110.004
93.850.0110.004
93.900.0110.005
93.950.0110.005
94.000.0110.006
94.050.0110.006
94.100.0110.006
94.150.0110.007
94.200.0110.007
94.250.0110.007
94.300.0110.008
94.350.0110.008
94.400.0110.008
94.450.0110.009
94.500.0110.009
94.550.0110.009
94.600.0110.010
94.650.0110.010
94.700.0110.010
94.750.0110.010
94.800.0110.011
94.850.0110.011
94.900.0110.011
94.950.0110.011
95.000.0110.012
95.050.0110.012
95.100.0110.012
95.150.0110.012
Page 75
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025
YR-C Rainfall=3.42" Printed 10/24/2025 Page 76
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 52P: Subsurface Basin Lot 6
Inflow Area = 1,850 sf, 100.00% Impervious, Inflow Depth = 3.19" for 2 YR-C event Inflow = 0.15 cfs @ 12.09 hrs, Volume= 491 cf Outflow = 0.07 cfs @ 11.95 hrs, Volume= 491 cf, Atten= 53%, Lag= 0.0 min Discarded = 0.07 cfs @ 11.95 hrs, Volume= 491 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 93.25' @ 12.12 hrs Surf.Area= 0.008 ac Storage= 0.001 af Plug-Flow detention time= 1.4 min calculated for 491 cf (100% of inflow) Center-of-Mass det. time= 1.4 min (753.3 - 751.9)
VolumeInvertAvail.StorageStorage Description
#1A93.00'0.005 af7.65"W x 47.33"L x 2.17"H Field A
0.018 af Overall - 0.005 af Embedded = 0.013 af x 40.0% Voids
#2A93.33'0.004 afADS N-12 15" x 6 Inside #1 Inside = 14.8"W x 14.8"H => 1.20 sf x 20.00"L = 24.0 cf Outside = 18.0"W x 18.0"H => 1.60 sf x 20.00"L = 31.9 cf Row Length Adjustment= +3.00' x 1.20 sf x 3 rows 6.31' Header x 1.20 sf x 2 = 15.2 cf Inside
0.009 af Total Available Storage
Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Discarded93.00'8.450 in/hr Exfiltration over Surface area
Discarded OutFlowMax=0.07 cfs @ 11.95 hrsHW=93.03' (Free Discharge)
1=Exfiltration (Exfiltration Controls 0.07 cfs)
Pond 52P: Subsurface Basin Lot 6
Exfiltration
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025 Page 77
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 52P: Subsurface Basin Lot 6 - Chamber Wizard Field A
Chamber Model = ADS N-12 15" (ADS N-12ยฎ Pipe) Inside= 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside= 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf Row Length Adjustment= +3.00' x 1.20 sf x 3 rows 18.0" Wide + 10.9" Spacing = 28.9" C-C Row Spacing 2 Chambers/Row x 20.00' Long +3.00' Row Adjustment +1.50' Header x 2 = 46.00' Row Length +8.0" End Stone x 2 = 47.33' Base Length 3 Rows x 18.0" Wide + 10.9" Spacing x 2 + 8.0" Side Stone x 2 = 7.65' Base Width 4.0" Stone Base + 18.0" Chamber Height + 4.0" Stone Cover = 2.17' Field Height 6 Chambers x 24.0 cf +3.00' Row Adjustment x 1.20 sf x 3 Rows + 6.31' Header x 1.20 sf x 2 = 170.0 cf Chamber Storage 6 Chambers x 31.9 cf +3.00' Row Adjustment x 1.60 sf x 3 Rows + 6.31' Header x 1.60 sf x 2 = 226.1 cf Displacement 784.1 cf Field - 226.1 cf Chambers = 558.1 cf Stone x 40.0% Voids = 223.2 cf Stone Storage Chamber Storage + Stone Storage = 393.2 cf = 0.009 af Overall Storage Efficiency = 50.1% Overall System Size = 47.33' x 7.65' x 2.17' 6 Chambers 29.0 cy Field 20.7 cy Stone
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 78
Pond 52P: Subsurface Basin Lot 6
Pond 52P: Subsurface Basin Lot 6
โ˜ Discarded
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 79
Pond 52P: Subsurface Basin Lot 6
Stage-Area-Storage
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 52P: Subsurface Basin Lot 6
Time (hours)Inflow (cfs)Storage (acre-feet)Elevation (feet)Discarded (cfs)
0.000.000.00093.000.00
2.000.000.00093.000.00
4.000.000.00093.000.00
6.000.000.00093.000.00
8.000.000.00093.000.00
10.000.010.00093.000.01
12.000.090.00093.050.07
14.000.010.00093.000.01
16.000.000.00093.000.00
18.000.000.00093.000.00
20.000.000.00093.000.00
22.000.000.00093.000.00
24.000.000.00093.000.00
26.000.000.00093.000.00
28.000.000.00093.000.00
30.000.000.00093.000.00
32.000.000.00093.000.00
34.000.000.00093.000.00
36.000.000.00093.000.00
38.000.000.00093.000.00
40.000.000.00093.000.00
42.000.000.00093.000.00
44.000.000.00093.000.00
46.000.000.00093.000.00
48.000.000.00093.000.00
50.000.000.00093.000.00
52.000.000.00093.000.00
54.000.000.00093.000.00
56.000.000.00093.000.00
58.000.000.00093.000.00
60.000.000.00093.000.00
62.000.000.00093.000.00
64.000.000.00093.000.00
66.000.000.00093.000.00
68.000.000.00093.000.00
70.000.000.00093.000.00
72.000.000.00093.000.00
Page 80
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 52P: Subsurface Basin Lot 6
Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
93.000.0094.040.07
93.020.0794.060.07
93.040.0794.080.07
93.060.0794.100.07
93.080.0794.120.07
93.100.0794.140.07
93.120.0794.160.07
93.140.0794.180.07
93.160.0794.200.07
93.180.0794.220.07
93.200.0794.240.07
93.220.0794.260.07
93.240.0794.280.07
93.260.0794.300.07
93.280.0794.320.07
93.300.0794.340.07
93.320.0794.360.07
93.340.0794.380.07
93.360.0794.400.07
93.380.0794.420.07
93.400.0794.440.07
93.420.0794.460.07
93.440.0794.480.07
93.460.0794.500.07
93.480.0794.520.07
93.500.0794.540.07
93.520.0794.560.07
93.540.0794.580.07
93.560.0794.600.07
93.580.0794.620.07
93.600.0794.640.07
93.620.0794.660.07
93.640.0794.680.07
93.660.0794.700.07
93.680.0794.720.07
93.700.0794.740.07
93.720.0794.760.07
93.740.0794.780.07
93.760.0794.800.07
93.780.0794.820.07
93.800.0794.840.07
93.820.0794.860.07
93.840.0794.880.07
93.860.0794.900.07
93.880.0794.920.07
93.900.0794.940.07
93.920.0794.960.07
93.940.0794.980.07
93.960.0795.000.07
93.980.0795.020.07
94.000.0795.040.07
94.020.0795.060.07
Elevation (feet)Discarded (cfs)
95.080.07
95.100.07
95.120.07
95.140.07
95.160.07
Page 81
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025 Page 82
Stage-Area-Storage for Pond 52P: Subsurface Basin Lot 6
Elevation (feet)Surface (acres)Storage (acre-feet)
93.000.0080.000
93.050.0080.000
93.100.0080.000
93.150.0080.000
93.200.0080.001
93.250.0080.001
93.300.0080.001
93.350.0080.001
93.400.0080.001
93.450.0080.001
93.500.0080.002
93.550.0080.002
93.600.0080.002
93.650.0080.002
93.700.0080.002
93.750.0080.003
93.800.0080.003
93.850.0080.003
93.900.0080.003
93.950.0080.004
94.000.0080.004
94.050.0080.004
94.100.0080.005
94.150.0080.005
94.200.0080.005
94.250.0080.005
94.300.0080.006
94.350.0080.006
94.400.0080.006
94.450.0080.006
94.500.0080.007
94.550.0080.007
94.600.0080.007
94.650.0080.007
94.700.0080.008
94.750.0080.008
94.800.0080.008
94.850.0080.008
94.900.0080.008
94.950.0080.008
95.000.0080.008
95.050.0080.009
95.100.0080.009
95.150.0080.009
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 83
Summary for Pond 56P: Subsurface Basin Lot 7
Inflow Area = 1,850 sf,100.00% Impervious, Inflow Depth = 3.19" for 2 YR-C event Inflow = 0.15 cfs @ 12.09 hrs, Volume= 491 cf Outflow = 0.08 cfs @ 11.97 hrs, Volume= 491 cf, Atten=47%, Lag=0.0 min Discarded = 0.08 cfs @ 11.97 hrs, Volume= 491 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 94.21' @ 12.11 hrs Surf.Area= 0.008 ac Storage= 0.001 af Plug-Flow detention time= 0.9 min calculated for 491 cf (100% of inflow) Center-of-Mass det. time= 0.9 min (752.8 - 751.9)
VolumeInvertAvail.StorageStorage Description
#1A94.00'0.005 af7.65"W x 45.33"L x 2.17"H Field A
0.017 af Overall - 0.005 af Embedded = 0.012 af x 40.0% Voids
#2A94.33'0.004 afADS N-12 15" x 6 Inside #1 Inside = 14.8"W x 14.8"H => 1.20 sf x 20.00"L = 24.0 cf Outside = 18.0"W x 18.0"H => 1.60 sf x 20.00"L = 31.9 cf Row Length Adjustment= +1.00' x 1.20 sf x 3 rows 6.31' Header x 1.20 sf x 2 = 15.2 cf Inside
0.000 afTotal Available Storage
0.009 af Total Available Storage
Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Discarded94.00'10.000 in/hr Exfiltration over Surface area
Discarded OutFlowMax=0.08 cfs @ 11.97 hrsHW=94.02' (Free Discharge)
1=Exfiltration (Exfiltration Controls 0.08 cfs)
Pond 56P: Subsurface Basin Lot 7
Exfiltration
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025 as LLC Page 84
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 56P: Subsurface Basin Lot 7 - Chamber Wizard Field A
Chamber Model = ADS N-12 15" (ADS N-12ยฎ Pipe) Inside= 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside= 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf Row Length Adjustment= +1.00' x 1.20 sf x 3 rows 18.0" Wide + 10.9" Spacing = 28.9" C-C Row Spacing 2 Chambers/Row x 20.00' Long +1.00' Row Adjustment +1.50' Header x 2 = 44.00' Row Length +8.0" End Stone x 2 = 45.33' Base Length 3 Rows x 18.0" Wide + 10.9" Spacing x 2 + 8.0" Side Stone x 2 = 7.65' Base Width 4.0" Stone Base + 18.0" Chamber Height + 4.0" Stone Cover = 2.17' Field Height 6 Chambers x 24.0 cf +1.00' Row Adjustment x 1.20 sf x 3 Rows + 6.31' Header x 1.20 sf x 2 = 162.8 cf Chamber Storage 6 Chambers x 31.9 cf +1.00' Row Adjustment x 1.60 sf x 3 Rows + 6.31' Header x 1.60 sf x 2 = 216.5 cf Displacement 751.0 cf Field - 216.5 cf Chambers = 534.5 cf Stone x 40.0% Voids = 213.8 cf Stone Storage Chamber Storage + Stone Storage = 376.6 cf = 0.009 af Overall Storage Efficiency = 50.1% Overall System Size = 45.33' x 7.65' x 2.17' 6 Chambers 27.8 cy Field 19.8 cy Stone
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025 Page 85
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 56P: Subsurface Basin Lot 7
Pond 56P: Subsurface Basin Lot 7
โ˜ Discarded
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025 Page 86
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 56P: Subsurface Basin Lot 7
Stage-Area-Storage
0.000 0.001 0.001 0.002 0.002 0.003 0.003 0.004 0.004 0.005 0.005 0.006 0.006 0.007 0.007 0.008 0.009 Storage (acre-feet)
Surface Storage
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 56P: Subsurface Basin Lot 7
Time (hours)Inflow (cfs)Storage (acre-feet)Elevation (feet)Discarded (cfs)
0.000.000.00094.000.00
2.000.000.00094.000.00
4.000.000.00094.000.00
6.000.000.00094.000.00
8.000.000.00094.000.00
10.000.010.00094.000.01
12.000.090.00094.030.08
14.000.010.00094.000.01
16.000.000.00094.000.00
18.000.000.00094.000.00
20.000.000.00094.000.00
22.000.000.00094.000.00
24.000.000.00094.000.00
26.000.000.00094.000.00
28.000.000.00094.000.00
30.000.000.00094.000.00
32.000.000.00094.000.00
34.000.000.00094.000.00
36.000.000.00094.000.00
38.000.000.00094.000.00
40.000.000.00094.000.00
42.000.000.00094.000.00
44.000.000.00094.000.00
46.000.000.00094.000.00
48.000.000.00094.000.00
50.000.000.00094.000.00
52.000.000.00094.000.00
54.000.000.00094.000.00
56.000.000.00094.000.00
58.000.000.00094.000.00
60.000.000.00094.000.00
62.000.000.00094.000.00
64.000.000.00094.000.00
66.000.000.00094.000.00
68.000.000.00094.000.00
70.000.000.00094.000.00
72.000.000.00094.000.00
Page 87
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025 Page 88
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 56P: Subsurface Basin Lot 7
Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
94.000.0095.040.08
94.020.0895.060.08
94.040.0895.080.08
94.060.0895.100.08
94.080.0895.120.08
94.100.0895.140.08
94.120.0895.160.08
94.140.0895.180.08
94.160.0895.200.08
94.180.0895.220.08
94.200.0895.240.08
94.220.0895.260.08
94.240.0895.280.08
94.260.0895.300.08
94.280.0895.320.08
94.300.0895.340.08
94.320.0895.360.08
94.340.0895.380.08
94.360.0895.400.08
94.380.0895.420.08
94.400.0895.440.08
94.420.0895.460.08
94.440.0895.480.08
94.460.0895.500.08
94.480.0895.520.08
94.500.0895.540.08
94.520.0895.560.08
94.540.0895.580.08
94.560.0895.600.08
94.580.0895.620.08
94.600.0895.640.08
94.620.0895.660.08
94.640.0895.680.08
94.660.0895.700.08
94.680.0895.720.08
94.700.0895.740.08
94.720.0895.760.08
94.740.0895.780.08
94.760.0895.800.08
94.780.0895.820.08
94.800.0895.840.08
94.820.0895.860.08
94.840.0895.880.08
94.860.0895.900.08
94.880.0895.920.08
94.900.0895.940.08
94.920.0895.960.08
94.940.0895.980.08
94.960.0896.000.08
94.980.0896.020.08
95.000.0896.040.08
95.020.0896.060.08
Elevation (feet)Discarded (cfs)
96.080.08
96.100.08
96.120.08
96.140.08
96.160.08
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025 Page 89
Stage-Area-Storage for Pond 56P: Subsurface Basin Lot 7
Elevation (feet)Surface (acres)Storage (acre-feet)
94.000.0080.000
94.050.0080.000
94.100.0080.000
94.150.0080.000
94.200.0080.001
94.250.0080.001
94.300.0080.001
94.350.0080.001
94.400.0080.001
94.450.0080.001
94.500.0080.002
94.550.0080.002
94.600.0080.002
94.650.0080.002
94.700.0080.002
94.750.0080.003
94.800.0080.003
94.850.0080.003
94.900.0080.003
94.950.0080.004
95.000.0080.004
95.050.0080.004
95.100.0080.004
95.150.0080.005
95.200.0080.005
95.250.0080.005
95.300.0080.005
95.350.0080.006
95.400.0080.006
95.450.0080.006
95.500.0080.006
95.550.0080.007
95.600.0080.007
95.650.0080.007
95.700.0080.007
95.750.0080.007
95.800.0080.007
95.850.0080.008
95.900.0080.008
95.950.0080.008
96.000.0080.008
96.050.0080.008
96.100.0080.008
96.150.0080.009
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025 Page 90
Time span=0.00-72.00 hrs, dt=0.01 hrs, 7201 points
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious
Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method
Subcatchment 36S: Roof Lot 1Runoff Area=1,850 sf 100.00% Impervious Runoff Depth=3.81" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.18 cfs 587 cf
Subcatchment 37S: Roof Lot 8Runoff Area=1,850 sf 100.00% Impervious Runoff Depth=3.81" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.18 cfs 587 cf
Subcatchment 38S: Roof Lot 2Runoff Area=1,850 sf 100.00% Impervious Runoff Depth=3.81" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.18 cfs 587 cf
Subcatchment 40S: Roof Lot 9Runoff Area=1,850 sf 100.00% Impervious Runoff Depth=3.81" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.18 cfs 587 cf
Subcatchment 42S: Roof Lot 10Runoff Area=1,850 sf 100.00% Impervious Runoff Depth=3.81" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.18 cfs 587 cf
Subcatchment 44S: Roof Lot 3Runoff Area=1,850 sf 100.00% Impervious Runoff Depth=3.81" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.18 cfs 587 cf
Subcatchment 48S: Roof Lot 4Runoff Area=1,850 sf 100.00% Impervious Runoff Depth=3.81" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.18 cfs 587 cf
Subcatchment 51S: Roof Lot 6Runoff Area=1,850 sf 100.00% Impervious Runoff Depth=3.81" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.18 cfs 587 cf
Subcatchment 55S: Roof Lot 7Runoff Area=1,850 sf 100.00% Impervious Runoff Depth=3.81" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.18 cfs 587 cf
Pond 37P: Subsurface Basin Lot 1Peak Elev=91.51' Storage=0.003 af Inflow=0.18 cfs 587 cf Outflow=0.03 cfs 587 cf
Pond 38P: Subsurface Basin Lot 8Peak Elev=94.33' Storage=0.001 af Inflow=0.18 cfs 587 cf Outflow=0.08 cfs 587 cf
Pond 39P: Subsurface Basin Lot 2Peak Elev=93.36' Storage=0.001 af Inflow=0.18 cfs 587 cf Outflow=0.07 cfs 587 cf
Pond 41P: Subsurface Basin Lot 9Peak Elev=93.37' Storage=0.001 af Inflow=0.18 cfs 587 cf Outflow=0.07 cfs 587 cf
Pond 43P: Subsurface Basin Lot 10Peak Elev=92.33' Storage=0.001 af Inflow=0.18 cfs 587 cf Outflow=0.08 cfs 587 cf
Pond 46P: Subsurface Basin Lot 3Peak Elev=93.44' Storage=0.002 af Inflow=0.18 cfs 587 cf Outflow=0.05 cfs 587 cf
Pond 50P: Subsurface Basin Lot 4Peak Elev=93.44' Storage=0.002 af Inflow=0.18 cfs 587 cf Outflow=0.05 cfs 587 cf
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Analysis - Proposed Conditions NOAA 24-hr D 2 YR-F Rainfall=4.04" Prepared by Civil Core Consulting Printed 10/24/2025 HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 91
Pond 52P: Subsurface Basin Lot 6
Pond 56P: Subsurface Basin Lot 7 Peak Elev=93.37' Storage=0.001 af Inflow=0.18 cfs 587 cf Outflow=0.07 cfs 587 cf
Total Runoff Area = 16,650 sf Runoff Volume = 5,279 cf Average Runoff Depth = 3.81" 0.00% Pervious = 0 sf 100.00% Impervious = 16,650 sf
Peak Elev=93.37' Storage=0.001 af Inflow=0.18 cfs 587 cf Outflow=0.07 cfs 587 cf
Peak Elev=94.33' Storage=0.001 af Inflow=0.18 cfs 587 cf Outflow=0.08 cfs 587 cf
Runoff Volume = 5,279 cf Average Runoff Depth = 3.81" 0.00% Pervious = 0 sf 100.00% Impervious = 16,650 sf
Page 713 Download HTML
NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025 Page 92
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 36S: Roof Lot 1
Runoff = 0.18 cfs @ 12.09 hrs, Volume= 587 cf, Depth= 3.81" Routed to Pond 37P : Subsurface Basin Lot 1
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-F Rainfall=4.04"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
0.4 45 2.00 Direct Entry, Pipe Flow
Subcatchment 36S: Roof Lot 1
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NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025 Page 93
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 36S: Roof Lot 1
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.100.000.010.00
4.000.210.000.080.00
6.000.340.000.180.00
8.000.520.000.340.00
10.000.800.000.600.01
12.001.940.001.710.11
14.003.240.003.010.01
16.003.520.003.280.00
18.003.700.003.460.00
20.003.830.003.590.00
22.003.940.003.710.00
24.004.040.003.810.00
26.004.040.003.810.00
28.004.040.003.810.00
30.004.040.003.810.00
32.004.040.003.810.00
34.004.040.003.810.00
36.004.040.003.810.00
38.004.040.003.810.00
40.004.040.003.810.00
42.004.040.003.810.00
44.004.040.003.810.00
46.004.040.003.810.00
48.004.040.003.810.00
50.004.040.003.810.00
52.004.040.003.810.00
54.004.040.003.810.00
56.004.040.003.810.00
58.004.040.003.810.00
60.004.040.003.810.00
62.004.040.003.810.00
64.004.040.003.810.00
66.004.040.003.810.00
68.004.040.003.810.00
70.004.040.003.810.00
72.004.040.003.810.00
Page 715 Download HTML
NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025 Page 94
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 37S: Roof Lot 8
Runoff = 0.18 cfs @ 12.09 hrs, Volume= 587 cf, Depth= 3.81" Routed to Pond 38P : Subsurface Basin Lot 8
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-F Rainfall=4.04"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
Direct Entry, Pipe Flow
0.4 45 2.00
Subcatchment 37S: Roof Lot 8
Page 716 Download HTML
NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 37S: Roof Lot 8
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.100.000.010.00
4.000.210.000.080.00
6.000.340.000.180.00
8.000.520.000.340.00
10.000.800.000.600.01
12.001.940.001.710.11
14.003.240.003.010.01
16.003.520.003.280.00
18.003.700.003.460.00
20.003.830.003.590.00
22.003.940.003.710.00
24.004.040.003.810.00
26.004.040.003.810.00
28.004.040.003.810.00
30.004.040.003.810.00
32.004.040.003.810.00
34.004.040.003.810.00
36.004.040.003.810.00
38.004.040.003.810.00
40.004.040.003.810.00
42.004.040.003.810.00
44.004.040.003.810.00
46.004.040.003.810.00
48.004.040.003.810.00
50.004.040.003.810.00
52.004.040.003.810.00
54.004.040.003.810.00
56.004.040.003.810.00
58.004.040.003.810.00
60.004.040.003.810.00
62.004.040.003.810.00
64.004.040.003.810.00
66.004.040.003.810.00
68.004.040.003.810.00
70.004.040.003.810.00
72.004.040.003.810.00
Page 95
Page 717 Download HTML
NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025 as LLC Page 96
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 38S: Roof Lot 2
Runoff = 0.18 cfs @ 12.09 hrs, Volume= 587 cf, Depth= 3.81" Routed to Pond 39P : Subsurface Basin Lot 2
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-F Rainfall=4.04"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
0.4 45 2.00 Direct Entry, Pipe Flow
Subcatchment 38S: Roof Lot 2
Page 718 Download HTML
NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 38S: Roof Lot 2
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.100.000.010.00
4.000.210.000.080.00
6.000.340.000.180.00
8.000.520.000.340.00
10.000.800.000.600.01
12.001.940.001.710.11
14.003.240.003.010.01
16.003.520.003.280.00
18.003.700.003.460.00
20.003.830.003.590.00
22.003.940.003.710.00
24.004.040.003.810.00
26.004.040.003.810.00
28.004.040.003.810.00
30.004.040.003.810.00
32.004.040.003.810.00
34.004.040.003.810.00
36.004.040.003.810.00
38.004.040.003.810.00
40.004.040.003.810.00
42.004.040.003.810.00
44.004.040.003.810.00
46.004.040.003.810.00
48.004.040.003.810.00
50.004.040.003.810.00
52.004.040.003.810.00
54.004.040.003.810.00
56.004.040.003.810.00
58.004.040.003.810.00
60.004.040.003.810.00
62.004.040.003.810.00
64.004.040.003.810.00
66.004.040.003.810.00
68.004.040.003.810.00
70.004.040.003.810.00
72.004.040.003.810.00
Page 97
Page 719 Download HTML
NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025 as LLC Page 98
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 40S: Roof Lot 9
Runoff = 0.18 cfs @ 12.09 hrs, Volume= 587 cf, Depth= 3.81" Routed to Pond 41P : Subsurface Basin Lot 9
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-F Rainfall=4.04"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
0.4 45 2.00 Direct Entry, Pipe Flow
Subcatchment 40S: Roof Lot 9
Page 720 Download HTML
NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025 Page 99
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 40S: Roof Lot 9
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.100.000.010.00
4.000.210.000.080.00
6.000.340.000.180.00
8.000.520.000.340.00
10.000.800.000.600.01
12.001.940.001.710.11
14.003.240.003.010.01
16.003.520.003.280.00
18.003.700.003.460.00
20.003.830.003.590.00
22.003.940.003.710.00
24.004.040.003.810.00
26.004.040.003.810.00
28.004.040.003.810.00
30.004.040.003.810.00
32.004.040.003.810.00
34.004.040.003.810.00
36.004.040.003.810.00
38.004.040.003.810.00
40.004.040.003.810.00
42.004.040.003.810.00
44.004.040.003.810.00
46.004.040.003.810.00
48.004.040.003.810.00
50.004.040.003.810.00
52.004.040.003.810.00
54.004.040.003.810.00
56.004.040.003.810.00
58.004.040.003.810.00
60.004.040.003.810.00
62.004.040.003.810.00
64.004.040.003.810.00
66.004.040.003.810.00
68.004.040.003.810.00
70.004.040.003.810.00
72.004.040.003.810.00
Page 721 Download HTML
NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025
YR-F Rainfall=4.04" Printed 10/24/2025 Page 100
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 42S: Roof Lot 10
Runoff = 0.18 cfs @ 12.09 hrs, Volume= 587 cf, Depth= 3.81" Routed to Pond 43P : Subsurface Basin Lot 10
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-F Rainfall=4.04"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)
0.4 45 2.00 Direct Entry, Pipe Flow
Subcatchment 42S: Roof Lot 10
Page 722 Download HTML
NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 42S: Roof Lot 10
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.100.000.010.00
4.000.210.000.080.00
6.000.340.000.180.00
8.000.520.000.340.00
10.000.800.000.600.01
12.001.940.001.710.11
14.003.240.003.010.01
16.003.520.003.280.00
18.003.700.003.460.00
20.003.830.003.590.00
22.003.940.003.710.00
24.004.040.003.810.00
26.004.040.003.810.00
28.004.040.003.810.00
30.004.040.003.810.00
32.004.040.003.810.00
34.004.040.003.810.00
36.004.040.003.810.00
38.004.040.003.810.00
40.004.040.003.810.00
42.004.040.003.810.00
44.004.040.003.810.00
46.004.040.003.810.00
48.004.040.003.810.00
50.004.040.003.810.00
52.004.040.003.810.00
54.004.040.003.810.00
56.004.040.003.810.00
58.004.040.003.810.00
60.004.040.003.810.00
62.004.040.003.810.00
64.004.040.003.810.00
66.004.040.003.810.00
68.004.040.003.810.00
70.004.040.003.810.00
72.004.040.003.810.00
Page 101
Page 723 Download HTML
NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025
YR-F Rainfall=4.04" Printed 10/24/2025 Page 102
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 44S: Roof Lot 3
Runoff = 0.18 cfs @ 12.09 hrs, Volume= 587 cf, Depth= 3.81" Routed to Pond 46P : Subsurface Basin Lot 3
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-F Rainfall=4.04"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
0.4 45 2.00 Direct Entry, Pipe Flow
Subcatchment 44S: Roof Lot 3
Page 724 Download HTML
NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 44S: Roof Lot 3
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.100.000.010.00
4.000.210.000.080.00
6.000.340.000.180.00
8.000.520.000.340.00
10.000.800.000.600.01
12.001.940.001.710.11
14.003.240.003.010.01
16.003.520.003.280.00
18.003.700.003.460.00
20.003.830.003.590.00
22.003.940.003.710.00
24.004.040.003.810.00
26.004.040.003.810.00
28.004.040.003.810.00
30.004.040.003.810.00
32.004.040.003.810.00
34.004.040.003.810.00
36.004.040.003.810.00
38.004.040.003.810.00
40.004.040.003.810.00
42.004.040.003.810.00
44.004.040.003.810.00
46.004.040.003.810.00
48.004.040.003.810.00
50.004.040.003.810.00
52.004.040.003.810.00
54.004.040.003.810.00
56.004.040.003.810.00
58.004.040.003.810.00
60.004.040.003.810.00
62.004.040.003.810.00
64.004.040.003.810.00
66.004.040.003.810.00
68.004.040.003.810.00
70.004.040.003.810.00
72.004.040.003.810.00
Page 103
Page 725 Download HTML
NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025 as LLC Page 104
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 48S: Roof Lot 4
Runoff = 0.18 cfs @ 12.09 hrs, Volume= 587 cf, Depth= 3.81" Routed to Pond 50P : Subsurface Basin Lot 4
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-F Rainfall=4.04"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
0.4 45 2.00 Direct Entry, Pipe Flow
Subcatchment 48S: Roof Lot 4
Page 726 Download HTML
NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 48S: Roof Lot 4
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.100.000.010.00
4.000.210.000.080.00
6.000.340.000.180.00
8.000.520.000.340.00
10.000.800.000.600.01
12.001.940.001.710.11
14.003.240.003.010.01
16.003.520.003.280.00
18.003.700.003.460.00
20.003.830.003.590.00
22.003.940.003.710.00
24.004.040.003.810.00
26.004.040.003.810.00
28.004.040.003.810.00
30.004.040.003.810.00
32.004.040.003.810.00
34.004.040.003.810.00
36.004.040.003.810.00
38.004.040.003.810.00
40.004.040.003.810.00
42.004.040.003.810.00
44.004.040.003.810.00
46.004.040.003.810.00
48.004.040.003.810.00
50.004.040.003.810.00
52.004.040.003.810.00
54.004.040.003.810.00
56.004.040.003.810.00
58.004.040.003.810.00
60.004.040.003.810.00
62.004.040.003.810.00
64.004.040.003.810.00
66.004.040.003.810.00
68.004.040.003.810.00
70.004.040.003.810.00
72.004.040.003.810.00
Page 105
Page 727 Download HTML
NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025 Page 106
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 51S: Roof Lot 6
Runoff = 0.18 cfs @ 12.09 hrs, Volume= 587 cf, Depth= 3.81" Routed to Pond 52P : Subsurface Basin Lot 6
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-F Rainfall=4.04"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
0.4 45 2.00 Direct Entry, Pipe Flow
Subcatchment 51S: Roof Lot 6
Page 728 Download HTML
NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 51S: Roof Lot 6
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.100.000.010.00
4.000.210.000.080.00
6.000.340.000.180.00
8.000.520.000.340.00
10.000.800.000.600.01
12.001.940.001.710.11
14.003.240.003.010.01
16.003.520.003.280.00
18.003.700.003.460.00
20.003.830.003.590.00
22.003.940.003.710.00
24.004.040.003.810.00
26.004.040.003.810.00
28.004.040.003.810.00
30.004.040.003.810.00
32.004.040.003.810.00
34.004.040.003.810.00
36.004.040.003.810.00
38.004.040.003.810.00
40.004.040.003.810.00
42.004.040.003.810.00
44.004.040.003.810.00
46.004.040.003.810.00
48.004.040.003.810.00
50.004.040.003.810.00
52.004.040.003.810.00
54.004.040.003.810.00
56.004.040.003.810.00
58.004.040.003.810.00
60.004.040.003.810.00
62.004.040.003.810.00
64.004.040.003.810.00
66.004.040.003.810.00
68.004.040.003.810.00
70.004.040.003.810.00
72.004.040.003.810.00
Page 107
Page 729 Download HTML
NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 108
Summary for Subcatchment 55S: Roof Lot 7
Runoff = 0.18 cfs @ 12.09 hrs, Volume= 587 cf, Depth= 3.81" Routed to Pond 56P : Subsurface Basin Lot 7
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-F Rainfall=4.04"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
0.4 45 2.00 Direct Entry, Pipe Flow
Subcatchment 55S: Roof Lot 7
Page 730 Download HTML
NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 55S: Roof Lot 7
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.100.000.010.00
4.000.210.000.080.00
6.000.340.000.180.00
8.000.520.000.340.00
10.000.800.000.600.01
12.001.940.001.710.11
14.003.240.003.010.01
16.003.520.003.280.00
18.003.700.003.460.00
20.003.830.003.590.00
22.003.940.003.710.00
24.004.040.003.810.00
26.004.040.003.810.00
28.004.040.003.810.00
30.004.040.003.810.00
32.004.040.003.810.00
34.004.040.003.810.00
36.004.040.003.810.00
38.004.040.003.810.00
40.004.040.003.810.00
42.004.040.003.810.00
44.004.040.003.810.00
46.004.040.003.810.00
48.004.040.003.810.00
50.004.040.003.810.00
52.004.040.003.810.00
54.004.040.003.810.00
56.004.040.003.810.00
58.004.040.003.810.00
60.004.040.003.810.00
62.004.040.003.810.00
64.004.040.003.810.00
66.004.040.003.810.00
68.004.040.003.810.00
70.004.040.003.810.00
72.004.040.003.810.00
Page 109
Page 731 Download HTML
NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025 C Page 110
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 37P: Subsurface Basin Lot 1
Inflow Area = 1,850 sf,100.00% Impervious, Inflow Depth = 3.81" for 2 YR-F event Inflow = 0.18 cfs @ 12.09 hrs, Volume= 587 cf Outflow = 0.03 cfs @ 11.78 hrs, Volume= 587 cf, Atten= 82%, Lag= 0.0 min Discarded = 0.03 cfs @ 11.78 hrs, Volume= 587 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 91.51' @ 12.40 hrs Surf.Area= 0.013 ac Storage= 0.003 af Plug-Flow detention time= 16.5 min calculated for 587 cf (100% of inflow) Center-of-Mass det. time= 16.5 min (764.9 - 748.4)
VolumeInvertAvail.StorageStorage Description
#1A91.00'0.008 af10.06'W x 57.33'L x 2.17'H Field A
0.029 af Overall - 0.008 af Embedded = 0.020 af x 40.0% Voids
#2A91.33'0.006 afADS N-12 15" x 12 Inside #1 Inside = 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside = 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf Row Length Adjustment = -7.00' x 1.20 sf x 4 rows 8.72' Header x 1.20 sf x 2 = 20.9 cf Inside
0.014 af Total Available Storage
Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Discarded91.00'2.450 in/hr Exfiltration over Surface area
Discarded OutFlowMax=0.03 cfs @ 11.78 hrsHW=91.02' (Free Discharge)
1=Exfiltration (Exfiltration Controls 0.03 cfs)
Pond 37P: Subsurface Basin Lot 1
Exfiltration
Page 732 Download HTML
NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025 s LLC Page 111
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 37P: Subsurface Basin Lot 1 - Chamber Wizard Field A
Chamber Model = ADS N-12 15" (ADS N-12ยฎ Pipe) Inside= 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside= 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf Row Length Adjustment= -7.00' x 1.20 sf x 4 rows 18.0" Wide + 10.9" Spacing = 28.9" C-C Row Spacing 3 Chambers/Row x 20.00' Long -7.00' Row Adjustment +1.50' Header x 2 = 56.00' Row Length +8.0" End Stone x 2 = 57.33' Base Length 4 Rows x 18.0" Wide + 10.9" Spacing x 3 + 8.0" Side Stone x 2 = 10.06' Base Width 4.0" Stone Base + 18.0" Chamber Height + 4.0" Stone Cover = 2.17' Field Height 12 Chambers x 24.0 cf -7.00' Row Adjustment x 1.20 sf x 4 Rows + 8.72' Header x 1.20 sf x 2 = 275.3 cf Chamber Storage 12 Chambers x 31.9 cf -7.00' Row Adjustment x 1.60 sf x 4 Rows + 8.72' Header x 1.60 sf x 2 = 366.2 cf Displacement 1,248.8 cf Field - 366.2 cf Chambers = 882.6 cf Stone x 40.0% Voids = 353.0 cf Stone Storage Chamber Storage + Stone Storage = 628.4 cf = 0.014 af Overall Storage Efficiency = 50.3% Overall System Size = 57.33' x 10.06' x 2.17' 12 Chambers 46.3 cy Field 32.7 cy Stone
โ˜โ˜โ˜
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NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 112
Pond 37P: Subsurface Basin Lot 1
Pond 37P: Subsurface Basin Lot 1
โ˜ Discarded
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Page 113
Pond 37P: Subsurface Basin Lot 1
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 37P: Subsurface Basin Lot 1
Time (hours)Inflow (cfs)Storage (acre-feet)Elevation (feet)Discarded (cfs)
0.000.000.00091.000.00
2.000.000.00091.000.00
4.000.000.00091.000.00
6.000.000.00091.000.00
8.000.000.00091.000.00
10.000.010.00091.000.01
12.000.110.00191.180.03
14.000.010.00091.040.03
16.000.000.00091.000.00
18.000.000.00091.000.00
20.000.000.00091.000.00
22.000.000.00091.000.00
24.000.000.00091.000.00
26.000.000.00091.000.00
28.000.000.00091.000.00
30.000.000.00091.000.00
32.000.000.00091.000.00
34.000.000.00091.000.00
36.000.000.00091.000.00
38.000.000.00091.000.00
40.000.000.00091.000.00
42.000.000.00091.000.00
44.000.000.00091.000.00
46.000.000.00091.000.00
48.000.000.00091.000.00
50.000.000.00091.000.00
52.000.000.00091.000.00
54.000.000.00091.000.00
56.000.000.00091.000.00
58.000.000.00091.000.00
60.000.000.00091.000.00
62.000.000.00091.000.00
64.000.000.00091.000.00
66.000.000.00091.000.00
68.000.000.00091.000.00
70.000.000.00091.000.00
72.000.000.00091.000.00
Page 114
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NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 37P: Subsurface Basin Lot 1
Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
91.000.0092.040.03
91.020.0392.060.03
91.040.0392.080.03
91.060.0392.100.03
91.080.0392.120.03
91.100.0392.140.03
91.120.0392.160.03
91.140.0392.180.03
91.160.0392.200.03
91.180.0392.220.03
91.200.0392.240.03
91.220.0392.260.03
91.240.0392.280.03
91.260.0392.300.03
91.280.0392.320.03
91.300.0392.340.03
91.320.0392.360.03
91.340.0392.380.03
91.360.0392.400.03
91.380.0392.420.03
91.400.0392.440.03
91.420.0392.460.03
91.440.0392.480.03
91.460.0392.500.03
91.480.0392.520.03
91.500.0392.540.03
91.520.0392.560.03
91.540.0392.580.03
91.560.0392.600.03
91.580.0392.620.03
91.600.0392.640.03
91.620.0392.660.03
91.640.0392.680.03
91.660.0392.700.03
91.680.0392.720.03
91.700.0392.740.03
91.720.0392.760.03
91.740.0392.780.03
91.760.0392.800.03
91.780.0392.820.03
91.800.0392.840.03
91.820.0392.860.03
91.840.0392.880.03
91.860.0392.900.03
91.880.0392.920.03
91.900.0392.940.03
91.920.0392.960.03
91.940.0392.980.03
91.960.0393.000.03
91.980.0393.020.03
92.000.0393.040.03
92.020.0393.060.03
Elevation (feet)Discarded (cfs)
93.080.03
93.100.03
93.120.03
93.140.03
93.160.03
Page 115
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025
Stage-Area-Storage for Pond 37P: Subsurface Basin Lot 1
Elevation (feet)Surface (acres)Storage (acre-feet)
91.000.0130.000
91.050.0130.000
91.100.0130.001
91.150.0130.001
91.200.0130.001
91.250.0130.001
91.300.0130.002
91.350.0130.002
91.400.0130.002
91.450.0130.002
91.500.0130.002
91.550.0130.003
91.600.0130.003
91.650.0130.004
91.700.0130.004
91.750.0130.004
91.800.0130.005
91.850.0130.005
91.900.0130.006
91.950.0130.006
92.000.0130.006
92.050.0130.007
92.100.0130.007
92.150.0130.008
92.200.0130.008
92.250.0130.009
92.300.0130.009
92.350.0130.010
92.400.0130.010
92.450.0130.010
92.500.0130.011
92.550.0130.011
92.600.0130.012
92.650.0130.012
92.700.0130.012
92.750.0130.012
92.800.0130.013
92.850.0130.013
92.900.0130.013
92.950.0130.013
93.000.0130.014
93.050.0130.014
93.100.0130.014
93.150.0130.014
Page 116
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Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 38P: Subsurface Basin Lot 8
Inflow Area = 1,850 sf, 100.00% Impervious, Inflow Depth = 3.81" for 2 YR-F event Inflow = 0.18 cfs @ 12.09 hrs, Volume= 587 cf Outflow = 0.08 cfs @ 11.94 hrs, Volume= 587 cf, Atten= 55%, Lag= 0.0 min Discarded = 0.08 cfs @ 11.94 hrs, Volume= 587 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 94.33' @ 12.12 hrs Surf.Area= 0.008 ac Storage= 0.001 af Plug-Flow detention time= 1.6 min calculated for 587 cf (100% of inflow) Center-of-Mass det. time= 1.6 min (749.9 - 748.4)
VolumeInvertAvail.StorageStorage Description
#1A94.00'0.005 af7.65'W x 45.33'L x 2.17'H Field A 0.017 af Overall - 0.005 af Embedded = 0.012 af x 40.0% Voids
#2A94.33'0.004 afADS N-12 15" x 6 Inside #1 Inside = 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside = 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf Row Length Adjustment= +1.00' x 1.20 sf x 3 rows 6.31' Header x 1.20 sf x 2 = 15.2 cf Inside
0.009 af Total Available Storage
Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Discarded94.00'10.000 in/hr Exfiltration over Surface area
Discarded OutFlowMax=0.08 cfs @ 11.94 hrsHW=94.03' (Free Discharge)
1=Exfiltration (Exfiltration Controls 0.08 cfs)
Pond 38P: Subsurface Basin Lot 8
Exfiltration
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 38P: Subsurface Basin Lot 8 - Chamber Wizard Field A
Chamber Model = ADS N-12 15" (ADS N-12ยฎ Pipe) Inside= 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside= 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf Row Length Adjustment= +1.00' x 1.20 sf x 3 rows 18.0" Wide + 10.9" Spacing = 28.9" C-C Row Spacing 2 Chambers/Row x 20.00' Long +1.00' Row Adjustment +1.50' Header x 2 = 44.00' Row Length +8.0" End Stone x 2 = 45.33' Base Length 3 Rows x 18.0" Wide + 10.9" Spacing x 2 + 8.0" Side Stone x 2 = 7.65' Base Width 4.0" Stone Base + 18.0" Chamber Height + 4.0" Stone Cover = 2.17' Field Height 6 Chambers x 24.0 cf +1.00' Row Adjustment x 1.20 sf x 3 Rows + 6.31' Header x 1.20 sf x 2 = 162.8 cf Chamber Storage 6 Chambers x 31.9 cf +1.00' Row Adjustment x 1.60 sf x 3 Rows + 6.31' Header x 1.60 sf x 2 = 216.5 cf Displacement 751.0 cf Field - 216.5 cf Chambers = 534.5 cf Stone x 40.0% Voids = 213.8 cf Stone Storage Chamber Storage + Stone Storage = 376.6 cf = 0.009 af Overall Storage Efficiency = 50.1% Overall System Size = 45.33' x 7.65' x 2.17' 6 Chambers 27.8 cy Field 19.8 cy Stone
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 119
Pond 38P: Subsurface Basin Lot 8
Pond 38P: Subsurface Basin Lot 8
โ˜ Discarded
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 120
Pond 38P: Subsurface Basin Lot 8
Stage-Area-Storage
0.000 0.001 0.001 0.002 0.002 0.003 0.003 0.004 0.004 0.005 0.005 0.006 0.006 0.007 0.007 0.008 0.009 Storage (acre-feet)
Surface Storage
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NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 38P: Subsurface Basin Lot 8
Time (hours)Inflow (cfs)Storage (acre-feet)Elevation (feet)Discarded (cfs)
0.000.000.00094.000.00
2.000.000.00094.000.00
4.000.000.00094.000.00
6.000.000.00094.000.00
8.000.000.00094.000.00
10.000.010.00094.000.01
12.000.110.00094.070.08
14.000.010.00094.000.01
16.000.000.00094.000.00
18.000.000.00094.000.00
20.000.000.00094.000.00
22.000.000.00094.000.00
24.000.000.00094.000.00
26.000.000.00094.000.00
28.000.000.00094.000.00
30.000.000.00094.000.00
32.000.000.00094.000.00
34.000.000.00094.000.00
36.000.000.00094.000.00
38.000.000.00094.000.00
40.000.000.00094.000.00
42.000.000.00094.000.00
44.000.000.00094.000.00
46.000.000.00094.000.00
48.000.000.00094.000.00
50.000.000.00094.000.00
52.000.000.00094.000.00
54.000.000.00094.000.00
56.000.000.00094.000.00
58.000.000.00094.000.00
60.000.000.00094.000.00
62.000.000.00094.000.00
64.000.000.00094.000.00
66.000.000.00094.000.00
68.000.000.00094.000.00
70.000.000.00094.000.00
72.000.000.00094.000.00
Page 121
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NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 38P: Subsurface Basin Lot 8
Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
94.000.0095.040.08
94.020.0895.060.08
94.040.0895.080.08
94.060.0895.100.08
94.080.0895.120.08
94.100.0895.140.08
94.120.0895.160.08
94.140.0895.180.08
94.160.0895.200.08
94.180.0895.220.08
94.200.0895.240.08
94.220.0895.260.08
94.240.0895.280.08
94.260.0895.300.08
94.280.0895.320.08
94.300.0895.340.08
94.320.0895.360.08
94.340.0895.380.08
94.360.0895.400.08
94.380.0895.420.08
94.400.0895.440.08
94.420.0895.460.08
94.440.0895.480.08
94.460.0895.500.08
94.480.0895.520.08
94.500.0895.540.08
94.520.0895.560.08
94.540.0895.580.08
94.560.0895.600.08
94.580.0895.620.08
94.600.0895.640.08
94.620.0895.660.08
94.640.0895.680.08
94.660.0895.700.08
94.680.0895.720.08
94.700.0895.740.08
94.720.0895.760.08
94.740.0895.780.08
94.760.0895.800.08
94.780.0895.820.08
94.800.0895.840.08
94.820.0895.860.08
94.840.0895.880.08
94.860.0895.900.08
94.880.0895.920.08
94.900.0895.940.08
94.920.0895.960.08
94.940.0895.980.08
94.960.0896.000.08
94.980.0896.020.08
95.000.0896.040.08
95.020.0896.060.08
Elevation (feet)Discarded (cfs)
96.080.08
96.100.08
96.120.08
96.140.08
96.160.08
Page 122
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Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025
Stage-Area-Storage for Pond 38P: Subsurface Basin Lot 8
Elevation (feet)Surface (acres)Storage (acre-feet)
94.000.0080.000
94.050.0080.000
94.100.0080.000
94.150.0080.000
94.200.0080.001
94.250.0080.001
94.300.0080.001
94.350.0080.001
94.400.0080.001
94.450.0080.001
94.500.0080.002
94.550.0080.002
94.600.0080.002
94.650.0080.002
94.700.0080.002
94.750.0080.003
94.800.0080.003
94.850.0080.003
94.900.0080.003
94.950.0080.004
95.000.0080.004
95.050.0080.004
95.100.0080.004
95.150.0080.005
95.200.0080.005
95.250.0080.005
95.300.0080.005
95.350.0080.006
95.400.0080.006
95.450.0080.006
95.500.0080.006
95.550.0080.007
95.600.0080.007
95.650.0080.007
95.700.0080.007
95.750.0080.007
95.800.0080.007
95.850.0080.008
95.900.0080.008
95.950.0080.008
96.000.0080.008
96.050.0080.008
96.100.0080.008
96.150.0080.009
Page 123
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 124
Summary for Pond 39P: Subsurface Basin Lot 2
Inflow Area = 1,850 sf, 100.00% Impervious, Inflow Depth = 3.81" for 2 YR-F event Inflow = 0.18 cfs @ 12.09 hrs, Volume= 587 cf Outflow = 0.07 cfs @ 11.93 hrs, Volume= 587 cf, Atten= 62%, Lag= 0.0 min Discarded = 0.07 cfs @ 11.93 hrs, Volume= 587 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 93.36' @ 12.13 hrs Surf.Area= 0.009 ac Storage= 0.001 af Plug-Flow detention time= 2.5 min calculated for 587 cf (100% of inflow) Center-of-Mass det. time= 2.5 min (750.9 - 748.4)
VolumeInvertAvail.StorageStorage Description
#1A93.00'0.005 af7.65'W x 49.33'L x 2.17'H Field A 0.019 af Overall - 0.005 af Embedded = 0.013 af x 40.0% Voids
#2A93.33'0.004 afADS N-12 15" x 6 Inside #1 Inside = 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside = 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf Row Length Adjustment= +5.00' x 1.20 sf x 3 rows 6.31' Header x 1.20 sf x 2 = 15.2 cf Inside
0.009 af Total Available Storage
Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Discarded93.00'7.850 in/hr Exfiltration over Surface area
Discarded OutFlowMax=0.07 cfs @ 11.93 hrsHW=93.03' (Free Discharge)
1=Exfiltration (Exfiltration Controls 0.07 cfs)
Pond 39P: Subsurface Basin Lot 2
Exfiltration
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 39P: Subsurface Basin Lot 2 - Chamber Wizard Field A
Chamber Model = ADS N-12 15" (ADS N-12ยฎ Pipe) Inside= 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside= 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf Row Length Adjustment= +5.00' x 1.20 sf x 3 rows 18.0" Wide + 10.9" Spacing = 28.9" C-C Row Spacing 2 Chambers/Row x 20.00' Long +5.00' Row Adjustment +1.50' Header x 2 = 48.00' Row Length +8.0" End Stone x 2 = 49.33' Base Length 3 Rows x 18.0" Wide + 10.9" Spacing x 2 + 8.0" Side Stone x 2 = 7.65' Base Width 4.0" Stone Base + 18.0" Chamber Height + 4.0" Stone Cover = 2.17' Field Height 6 Chambers x 24.0 cf +5.00' Row Adjustment x 1.20 sf x 3 Rows + 6.31' Header x 1.20 sf x 2 = 177.2 cf Chamber Storage 6 Chambers x 31.9 cf +5.00' Row Adjustment x 1.60 sf x 3 Rows + 6.31' Header x 1.60 sf x 2 = 235.7 cf Displacement 817.3 cf Field - 235.7 cf Chambers = 581.6 cf Stone x 40.0% Voids = 232.6 cf Stone Storage Chamber Storage + Stone Storage = 409.8 cf = 0.009 af Overall Storage Efficiency = 50.1% Overall System Size = 49.33' x 7.65' x 2.17' 6 Chambers 30.3 cy Field 21.5 cy Stone
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NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025 Page 126
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 126
Pond 39P: Subsurface Basin Lot 2
Pond 39P: Subsurface Basin Lot 2
โ˜ Discarded
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 127
Pond 39P: Subsurface Basin Lot 2
Stage-Area-Storage
0 0.000 0.001 0.001 0.002 0.002 0.003 0.003 0.004 0.004 0.005 0.005 0.006 0.006 0.007 0.007 0.008 0.009 0.009 Storage (acre-feet)
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NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 39P: Subsurface Basin Lot 2
Time (hours)Inflow (cfs)Storage (acre-feet)Elevation (feet)Discarded (cfs)
0.000.000.00093.000.00
2.000.000.00093.000.00
4.000.000.00093.000.00
6.000.000.00093.000.00
8.000.000.00093.000.00
10.000.010.00093.000.01
12.000.110.00093.090.07
14.000.010.00093.000.01
16.000.000.00093.000.00
18.000.000.00093.000.00
20.000.000.00093.000.00
22.000.000.00093.000.00
24.000.000.00093.000.00
26.000.000.00093.000.00
28.000.000.00093.000.00
30.000.000.00093.000.00
32.000.000.00093.000.00
34.000.000.00093.000.00
36.000.000.00093.000.00
38.000.000.00093.000.00
40.000.000.00093.000.00
42.000.000.00093.000.00
44.000.000.00093.000.00
46.000.000.00093.000.00
48.000.000.00093.000.00
50.000.000.00093.000.00
52.000.000.00093.000.00
54.000.000.00093.000.00
56.000.000.00093.000.00
58.000.000.00093.000.00
60.000.000.00093.000.00
62.000.000.00093.000.00
64.000.000.00093.000.00
66.000.000.00093.000.00
68.000.000.00093.000.00
70.000.000.00093.000.00
72.000.000.00093.000.00
Page 128
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NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 39P: Subsurface Basin Lot 2
Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
93.000.0094.040.07
93.020.0794.060.07
93.040.0794.080.07
93.060.0794.100.07
93.080.0794.120.07
93.100.0794.140.07
93.120.0794.160.07
93.140.0794.180.07
93.160.0794.200.07
93.180.0794.220.07
93.200.0794.240.07
93.220.0794.260.07
93.240.0794.280.07
93.260.0794.300.07
93.280.0794.320.07
93.300.0794.340.07
93.320.0794.360.07
93.340.0794.380.07
93.360.0794.400.07
93.380.0794.420.07
93.400.0794.440.07
93.420.0794.460.07
93.440.0794.480.07
93.460.0794.500.07
93.480.0794.520.07
93.500.0794.540.07
93.520.0794.560.07
93.540.0794.580.07
93.560.0794.600.07
93.580.0794.620.07
93.600.0794.640.07
93.620.0794.660.07
93.640.0794.680.07
93.660.0794.700.07
93.680.0794.720.07
93.700.0794.740.07
93.720.0794.760.07
93.740.0794.780.07
93.760.0794.800.07
93.780.0794.820.07
93.800.0794.840.07
93.820.0794.860.07
93.840.0794.880.07
93.860.0794.900.07
93.880.0794.920.07
93.900.0794.940.07
93.920.0794.960.07
93.940.0794.980.07
93.960.0795.000.07
93.980.0795.020.07
94.000.0795.040.07
94.020.0795.060.07
Elevation (feet)Discarded (cfs)
95.080.07
95.100.07
95.120.07
95.140.07
95.160.07
Page 129
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025
Stage-Area-Storage for Pond 39P: Subsurface Basin Lot 2
Elevation (feet)Surface (acres)Storage (acre-feet)
93.000.0090.000
93.050.0090.000
93.100.0090.000
93.150.0090.001
93.200.0090.001
93.250.0090.001
93.300.0090.001
93.350.0090.001
93.400.0090.001
93.450.0090.001
93.500.0090.002
93.550.0090.002
93.600.0090.002
93.650.0090.002
93.700.0090.003
93.750.0090.003
93.800.0090.003
93.850.0090.003
93.900.0090.004
93.950.0090.004
94.000.0090.004
94.050.0090.005
94.100.0090.005
94.150.0090.005
94.200.0090.005
94.250.0090.006
94.300.0090.006
94.350.0090.006
94.400.0090.007
94.450.0090.007
94.500.0090.007
94.550.0090.007
94.600.0090.008
94.650.0090.008
94.700.0090.008
94.750.0090.008
94.800.0090.008
94.850.0090.008
94.900.0090.008
94.950.0090.009
95.000.0090.009
95.050.0090.009
95.100.0090.009
95.150.0090.009
Page 130
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NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 131
Summary for Pond 41P: Subsurface Basin Lot 9
Inflow Area = 1,850 sf, 100.00% Impervious, Inflow Depth = 3.81" for 2 YR-F event Inflow = 0.18 cfs @ 12.09 hrs, Volume= 587 cf Outflow = 0.07 cfs @ 11.93 hrs, Volume= 587 cf, Atten= 62%, Lag= 0.0 min Discarded = 0.07 cfs @ 11.93 hrs, Volume= 587 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 93.37' @ 12.13 hrs Surf.Area= 0.008 ac Storage= 0.001 af Plug-Flow detention time= 2.5 min calculated for 587 cf (100% of inflow) Center-of-Mass det. time= 2.5 min (750.9 - 748.4)
VolumeInvertAvail.StorageStorage Description
#1A93.00'0.005 af7.65'W x 48.33'L x 2.17'H Field A 0.018 af Overall - 0.005 af Embedded = 0.013 af x 40.0% Voids
#2A93.33'0.004 afADS N-12 15" x 6 Inside #1 Inside = 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside = 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf Row Length Adjustment= +4.00' x 1.20 sf x 3 rows 6.31' Header x 1.20 sf x 2 = 15.2 cf Inside
0.009 af Total Available Storage
Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Discarded93.00'8.000 in/hr Exfiltration over Surface area
Discarded OutFlowMax=0.07 cfs @ 11.93 hrsHW=93.03' (Free Discharge)
1=Exfiltration (Exfiltration Controls 0.07 cfs)
Pond 41P: Subsurface Basin Lot 9
Exfiltration
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 41P: Subsurface Basin Lot 9 - Chamber Wizard Field A
Chamber Model = ADS N-12 15" (ADS N-12ยฎ Pipe) Inside= 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside= 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf Row Length Adjustment= +4.00' x 1.20 sf x 3 rows 18.0" Wide + 10.9" Spacing = 28.9" C-C Row Spacing 2 Chambers/Row x 20.00' Long +4.00' Row Adjustment +1.50' Header x 2 = 47.00' Row Length +8.0" End Stone x 2 = 48.33' Base Length 3 Rows x 18.0" Wide + 10.9" Spacing x 2 + 8.0" Side Stone x 2 = 7.65' Base Width 4.0" Stone Base + 18.0" Chamber Height + 4.0" Stone Cover = 2.17' Field Height 6 Chambers x 24.0 cf +4.00' Row Adjustment x 1.20 sf x 3 Rows + 6.31' Header x 1.20 sf x 2 = 173.6 cf Chamber Storage 6 Chambers x 31.9 cf +4.00' Row Adjustment x 1.60 sf x 3 Rows + 6.31' Header x 1.60 sf x 2 = 230.9 cf Displacement 800.7 cf Field - 230.9 cf Chambers = 569.8 cf Stone x 40.0% Voids = 227.9 cf Stone Storage Chamber Storage + Stone Storage = 401.5 cf = 0.009 af Overall Storage Efficiency = 50.1% Overall System Size = 48.33' x 7.65' x 2.17' 6 Chambers 29.7 cy Field 21.1 cy Stone
โ—‹โ—‹โ—‹
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NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 133
Pond 41P: Subsurface Basin Lot 9
Pond 41P: Subsurface Basin Lot 9
โ˜ Discarded
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Page 134
Pond 41P: Subsurface Basin Lot 9
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NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 41P: Subsurface Basin Lot 9
Time (hours)Inflow (cfs)Storage (acre-feet)Elevation (feet)Discarded (cfs)
0.000.000.00093.000.00
2.000.000.00093.000.00
4.000.000.00093.000.00
6.000.000.00093.000.00
8.000.000.00093.000.00
10.000.010.00093.000.01
12.000.110.00093.090.07
14.000.010.00093.000.01
16.000.000.00093.000.00
18.000.000.00093.000.00
20.000.000.00093.000.00
22.000.000.00093.000.00
24.000.000.00093.000.00
26.000.000.00093.000.00
28.000.000.00093.000.00
30.000.000.00093.000.00
32.000.000.00093.000.00
34.000.000.00093.000.00
36.000.000.00093.000.00
38.000.000.00093.000.00
40.000.000.00093.000.00
42.000.000.00093.000.00
44.000.000.00093.000.00
46.000.000.00093.000.00
48.000.000.00093.000.00
50.000.000.00093.000.00
52.000.000.00093.000.00
54.000.000.00093.000.00
56.000.000.00093.000.00
58.000.000.00093.000.00
60.000.000.00093.000.00
62.000.000.00093.000.00
64.000.000.00093.000.00
66.000.000.00093.000.00
68.000.000.00093.000.00
70.000.000.00093.000.00
72.000.000.00093.000.00
Page 135
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NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 41P: Subsurface Basin Lot 9
Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
93.000.0094.040.07
93.020.0794.060.07
93.040.0794.080.07
93.060.0794.100.07
93.080.0794.120.07
93.100.0794.140.07
93.120.0794.160.07
93.140.0794.180.07
93.160.0794.200.07
93.180.0794.220.07
93.200.0794.240.07
93.220.0794.260.07
93.240.0794.280.07
93.260.0794.300.07
93.280.0794.320.07
93.300.0794.340.07
93.320.0794.360.07
93.340.0794.380.07
93.360.0794.400.07
93.380.0794.420.07
93.400.0794.440.07
93.420.0794.460.07
93.440.0794.480.07
93.460.0794.500.07
93.480.0794.520.07
93.500.0794.540.07
93.520.0794.560.07
93.540.0794.580.07
93.560.0794.600.07
93.580.0794.620.07
93.600.0794.640.07
93.620.0794.660.07
93.640.0794.680.07
93.660.0794.700.07
93.680.0794.720.07
93.700.0794.740.07
93.720.0794.760.07
93.740.0794.780.07
93.760.0794.800.07
93.780.0794.820.07
93.800.0794.840.07
93.820.0794.860.07
93.840.0794.880.07
93.860.0794.900.07
93.880.0794.920.07
93.900.0794.940.07
93.920.0794.960.07
93.940.0794.980.07
93.960.0795.000.07
93.980.0795.020.07
94.000.0795.040.07
94.020.0795.060.07
Elevation (feet)Discarded (cfs)
95.080.07
95.100.07
95.120.07
95.140.07
95.160.07
Page 136
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025
Stage-Area-Storage for Pond 41P: Subsurface Basin Lot 9
Elevation (feet)Surface (acres)Storage (acre-feet)
93.000.0080.000
93.050.0080.000
93.100.0080.000
93.150.0080.001
93.200.0080.001
93.250.0080.001
93.300.0080.001
93.350.0080.001
93.400.0080.001
93.450.0080.001
93.500.0080.002
93.550.0080.002
93.600.0080.002
93.650.0080.002
93.700.0080.003
93.750.0080.003
93.800.0080.003
93.850.0080.003
93.900.0080.004
93.950.0080.004
94.000.0080.004
94.050.0080.004
94.100.0080.005
94.150.0080.005
94.200.0080.005
94.250.0080.006
94.300.0080.006
94.350.0080.006
94.400.0080.006
94.450.0080.007
94.500.0080.007
94.550.0080.007
94.600.0080.007
94.650.0080.008
94.700.0080.008
94.750.0080.008
94.800.0080.008
94.850.0080.008
94.900.0080.008
94.950.0080.008
95.000.0080.009
95.050.0080.009
95.100.0080.009
95.150.0080.009
Page 137
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NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 138
Summary for Pond 43P: Subsurface Basin Lot 10
Inflow Area = 1,850 sf,100.00% Impervious, Inflow Depth = 3.81" for 2 YR-F event Inflow = 0.18 cfs @ 12.09 hrs, Volume= 587 cf Outflow = 0.08 cfs @ 11.94 hrs, Volume= 587 cf, Atten= 55%, Lag= 0.0 min Discarded = 0.08 cfs @ 11.94 hrs, Volume= 587 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 92.33' @ 12.12 hrs Surf.Area= 0.008 ac Storage= 0.001 af Plug-Flow detention time= 1.6 min calculated for 587 cf (100% of inflow) Center-of-Mass det. time= 1.6 min (749.9 - 748.4)
VolumeInvertAvail.StorageStorage Description
#1A92.00'0.005 af7.65'W x 45.33'L x 2.17'H Field A 0.017 af Overall - 0.005 af Embedded = 0.012 af x 40.0% Voids
#2A92.33'0.004 afADS N-12 15" x 6 Inside #1 Inside = 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside = 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf Row Length Adjustment= +1.00' x 1.20 sf x 3 rows 6.31' Header x 1.20 sf x 2 = 15.2 cf Inside
0.009 af Total Available Storage
Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Discarded92.00'10.000 in/hr Exfiltration over Surface area
Discarded OutFlowMax=0.08 cfs @ 11.94 hrsHW=92.03' (Free Discharge)
โ€”1=Exfiltration (Exfiltration Controls 0.08 cfs)
Pond 43P: Subsurface Basin Lot 10
Exfiltration
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 43P: Subsurface Basin Lot 10 - Chamber Wizard Field A
Chamber Model = ADS N-12 15" (ADS N-12ยฎ Pipe) Inside= 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside= 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf Row Length Adjustment= +1.00' x 1.20 sf x 3 rows 18.0" Wide + 10.9" Spacing = 28.9" C-C Row Spacing 2 Chambers/Row x 20.00' Long +1.00' Row Adjustment +1.50' Header x 2 = 44.00' Row Length +8.0" End Stone x 2 = 45.33' Base Length 3 Rows x 18.0" Wide + 10.9" Spacing x 2 + 8.0" Side Stone x 2 = 7.65' Base Width 4.0" Stone Base + 18.0" Chamber Height + 4.0" Stone Cover = 2.17' Field Height 6 Chambers x 24.0 cf +1.00' Row Adjustment x 1.20 sf x 3 Rows + 6.31' Header x 1.20 sf x 2 = 162.8 cf Chamber Storage 6 Chambers x 31.9 cf +1.00' Row Adjustment x 1.60 sf x 3 Rows + 6.31' Header x 1.60 sf x 2 = 216.5 cf Displacement 751.0 cf Field - 216.5 cf Chambers = 534.5 cf Stone x 40.0% Voids = 213.8 cf Stone Storage Chamber Storage + Stone Storage = 376.6 cf = 0.009 af Overall Storage Efficiency = 50.1% Overall System Size = 45.33' x 7.65' x 2.17' 6 Chambers 27.8 cy Field 19.8 cy Stone
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NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 140
Pond 43P: Subsurface Basin Lot 10
Pond 43P: Subsurface Basin Lot 10
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NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 141
Pond 43P: Subsurface Basin Lot 10
Stage-Area-Storage
0.000 0.001 0.001 0.002 0.002 0.003 0.003 0.004 0.004 0.005 0.005 0.006 0.006 0.007 0.007 0.008 0.009 Storage (acre-feet)
Surface Storage
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NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 43P: Subsurface Basin Lot 10
Time (hours)Inflow (cfs)Storage (acre-feet)Elevation (feet)Discarded (cfs)
0.000.000.00092.000.00
2.000.000.00092.000.00
4.000.000.00092.000.00
6.000.000.00092.000.00
8.000.000.00092.000.00
10.000.010.00092.000.01
12.000.110.00092.070.08
14.000.010.00092.000.01
16.000.000.00092.000.00
18.000.000.00092.000.00
20.000.000.00092.000.00
22.000.000.00092.000.00
24.000.000.00092.000.00
26.000.000.00092.000.00
28.000.000.00092.000.00
30.000.000.00092.000.00
32.000.000.00092.000.00
34.000.000.00092.000.00
36.000.000.00092.000.00
38.000.000.00092.000.00
40.000.000.00092.000.00
42.000.000.00092.000.00
44.000.000.00092.000.00
46.000.000.00092.000.00
48.000.000.00092.000.00
50.000.000.00092.000.00
52.000.000.00092.000.00
54.000.000.00092.000.00
56.000.000.00092.000.00
58.000.000.00092.000.00
60.000.000.00092.000.00
62.000.000.00092.000.00
64.000.000.00092.000.00
66.000.000.00092.000.00
68.000.000.00092.000.00
70.000.000.00092.000.00
72.000.000.00092.000.00
Page 142
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NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 43P: Subsurface Basin Lot 10
Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
92.000.0093.040.08
92.020.0893.060.08
92.040.0893.080.08
92.060.0893.100.08
92.080.0893.120.08
92.100.0893.140.08
92.120.0893.160.08
92.140.0893.180.08
92.160.0893.200.08
92.180.0893.220.08
92.200.0893.240.08
92.220.0893.260.08
92.240.0893.280.08
92.260.0893.300.08
92.280.0893.320.08
92.300.0893.340.08
92.320.0893.360.08
92.340.0893.380.08
92.360.0893.400.08
92.380.0893.420.08
92.400.0893.440.08
92.420.0893.460.08
92.440.0893.480.08
92.460.0893.500.08
92.480.0893.520.08
92.500.0893.540.08
92.520.0893.560.08
92.540.0893.580.08
92.560.0893.600.08
92.580.0893.620.08
92.600.0893.640.08
92.620.0893.660.08
92.640.0893.680.08
92.660.0893.700.08
92.680.0893.720.08
92.700.0893.740.08
92.720.0893.760.08
92.740.0893.780.08
92.760.0893.800.08
92.780.0893.820.08
92.800.0893.840.08
92.820.0893.860.08
92.840.0893.880.08
92.860.0893.900.08
92.880.0893.920.08
92.900.0893.940.08
92.920.0893.960.08
92.940.0893.980.08
92.960.0894.000.08
92.980.0894.020.08
93.000.0894.040.08
93.020.0894.060.08
Elevation (feet)Discarded (cfs)
94.080.08
94.100.08
94.120.08
94.140.08
94.160.08
Page 143
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025
Stage-Area-Storage for Pond 43P: Subsurface Basin Lot 10
Elevation (feet)Surface (acres)Storage (acre-feet)
92.000.0080.000
92.050.0080.000
92.100.0080.000
92.150.0080.000
92.200.0080.001
92.250.0080.001
92.300.0080.001
92.350.0080.001
92.400.0080.001
92.450.0080.001
92.500.0080.002
92.550.0080.002
92.600.0080.002
92.650.0080.002
92.700.0080.002
92.750.0080.003
92.800.0080.003
92.850.0080.003
92.900.0080.003
92.950.0080.004
93.000.0080.004
93.050.0080.004
93.100.0080.004
93.150.0080.005
93.200.0080.005
93.250.0080.005
93.300.0080.005
93.350.0080.006
93.400.0080.006
93.450.0080.006
93.500.0080.006
93.550.0080.007
93.600.0080.007
93.650.0080.007
93.700.0080.007
93.750.0080.007
93.800.0080.007
93.850.0080.008
93.900.0080.008
93.950.0080.008
94.000.0080.008
94.050.0080.008
94.100.0080.008
94.150.0080.009
Page 144
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Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 145
Summary for Pond 46P: Subsurface Basin Lot 3
Inflow Area = 1,850 sf,100.00% Impervious, Inflow Depth = 3.81" for 2 YR-F event Inflow = 0.18 cfs @ 12.09 hrs, Volume= 587 cf Outflow = 0.05 cfs @ 11.86 hrs, Volume= 587 cf, Atten=74%, Lag=0.0 min Discarded = 0.05 cfs @ 11.86 hrs, Volume= 587 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 93.44' @ 12.22 hrs Surf.Area= 0.011 ac Storage= 0.002 af Plug-Flow detention time= 7.3 min calculated for 587 cf (100% of inflow) Center-of-Mass det. time= 7.3 min (755.7 - 748.4)
VolumeInvertAvail.StorageStorage Description
#1A93.00'0.007 af7.65"W x 64.33"L x 2.17"H Field A 0.024 af Overall - 0.007 af Embedded = 0.017 af x 40.0% Voids
#2A93.33'0.005 afADS N-12 15" x 9 Inside #1 Inside = 14.8"W x 14.8"H => 1.20 sf x 20.00"L = 24.0 cf Outside = 18.0"W x 18.0"H => 1.60 sf x 20.00"L = 31.9 cf 9 Chambers in 3 Rows 6.31' Header x 1.20 sf x 2 = 15.2 cf Inside
0.012 af Total Available Storage
Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Discarded93.00'4.050 in/hr Exfiltration over Surface area
Discarded OutFlowMax=0.05 cfs @ 11.86 hrsHW=93.02' (Free Discharge)
1=Exfiltration (Exfiltration Controls 0.05 cfs)
Pond 46P: Subsurface Basin Lot 3
Exfiltration
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Analysis - Proposed Conditions NOAA 24-h Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 46P: Subsurface Basin Lot 3 - Chamber Wizard Field A
Chamber Model = ADS N-12 15" (ADS N-12ยฎ Pipe) Inside= 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside= 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf 18.0" Wide + 10.9" Spacing = 28.9" C-C Row Spacing 3 Chambers/Row x 20.00' Long +1.50' Header x 2 = 63.00' Row Length +8.0" End Stone x 2 = 64.33' Base Length 3 Rows x 18.0" Wide + 10.9" Spacing x 2 + 8.0" Side Stone x 2 = 7.65' Base Width 4.0" Stone Base + 18.0" Chamber Height + 4.0" Stone Cover = 2.17' Field Height 9 Chambers x 24.0 cf + 6.31' Header x 1.20 sf x 2 = 231.2 cf Chamber Storage 9 Chambers x 31.9 cf + 6.31' Header x 1.60 sf x 2 = 307.5 cf Displacement 1,065.8 cf Field - 307.5 cf Chambers = 758.3 cf Stone x 40.0% Voids = 303.3 cf Stone Storage Chamber Storage + Stone Storage = 534.5 cf = 0.012 af Overall Storage Efficiency = 50.1% Overall System Size = 64.33' x 7.65' x 2.17' 9 Chambers 39.5 cy Field 28.1 cy Stone
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NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 147
Pond 46P: Subsurface Basin Lot 3
Pond 46P: Subsurface Basin Lot 3
Stage-Discharge
โ˜ Discarded
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NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 148
Pond 46P: Subsurface Basin Lot 3
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NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 46P: Subsurface Basin Lot 3
Time (hours)Inflow (cfs)Storage (acre-feet)Elevation (feet)Discarded (cfs)
0.000.000.00093.000.00
2.000.000.00093.000.00
4.000.000.00093.000.00
6.000.000.00093.000.00
8.000.000.00093.000.00
10.000.010.00093.000.01
12.000.110.00193.140.05
14.000.010.00093.000.01
16.000.000.00093.000.00
18.000.000.00093.000.00
20.000.000.00093.000.00
22.000.000.00093.000.00
24.000.000.00093.000.00
26.000.000.00093.000.00
28.000.000.00093.000.00
30.000.000.00093.000.00
32.000.000.00093.000.00
34.000.000.00093.000.00
36.000.000.00093.000.00
38.000.000.00093.000.00
40.000.000.00093.000.00
42.000.000.00093.000.00
44.000.000.00093.000.00
46.000.000.00093.000.00
48.000.000.00093.000.00
50.000.000.00093.000.00
52.000.000.00093.000.00
54.000.000.00093.000.00
56.000.000.00093.000.00
58.000.000.00093.000.00
60.000.000.00093.000.00
62.000.000.00093.000.00
64.000.000.00093.000.00
66.000.000.00093.000.00
68.000.000.00093.000.00
70.000.000.00093.000.00
72.000.000.00093.000.00
Page 149
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NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025
2 YR-F Rainfall=4.04" Printed 10/24/2025 Page 150
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 46P: Subsurface Basin Lot 3
Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
93.000.0094.040.05
93.020.0594.060.05
93.040.0594.080.05
93.060.0594.100.05
93.080.0594.120.05
93.100.0594.140.05
93.120.0594.160.05
93.140.0594.180.05
93.160.0594.200.05
93.180.0594.220.05
93.200.0594.240.05
93.220.0594.260.05
93.240.0594.280.05
93.260.0594.300.05
93.280.0594.320.05
93.300.0594.340.05
93.320.0594.360.05
93.340.0594.380.05
93.360.0594.400.05
93.380.0594.420.05
93.400.0594.440.05
93.420.0594.460.05
93.440.0594.480.05
93.460.0594.500.05
93.480.0594.520.05
93.500.0594.540.05
93.520.0594.560.05
93.540.0594.580.05
93.560.0594.600.05
93.580.0594.620.05
93.600.0594.640.05
93.620.0594.660.05
93.640.0594.680.05
93.660.0594.700.05
93.680.0594.720.05
93.700.0594.740.05
93.720.0594.760.05
93.740.0594.780.05
93.760.0594.800.05
93.780.0594.820.05
93.800.0594.840.05
93.820.0594.860.05
93.840.0594.880.05
93.860.0594.900.05
93.880.0594.920.05
93.900.0594.940.05
93.920.0594.960.05
93.940.0594.980.05
93.960.0595.000.05
93.980.0595.020.05
94.000.0595.040.05
94.020.0595.060.05
Elevation (feet)Discarded (cfs)
95.080.05
95.100.05
95.120.05
95.140.05
95.160.05
Page 772 Download HTML
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025
Stage-Area-Storage for Pond 46P: Subsurface Basin Lot 3
Elevation (feet)Surface (acres)Storage (acre-feet)
93.000.0110.000
93.050.0110.000
93.100.0110.000
93.150.0110.001
93.200.0110.001
93.250.0110.001
93.300.0110.001
93.350.0110.002
93.400.0110.002
93.450.0110.002
93.500.0110.002
93.550.0110.002
93.600.0110.003
93.650.0110.003
93.700.0110.003
93.750.0110.004
93.800.0110.004
93.850.0110.004
93.900.0110.005
93.950.0110.005
94.000.0110.006
94.050.0110.006
94.100.0110.006
94.150.0110.007
94.200.0110.007
94.250.0110.007
94.300.0110.008
94.350.0110.008
94.400.0110.008
94.450.0110.009
94.500.0110.009
94.550.0110.009
94.600.0110.010
94.650.0110.010
94.700.0110.010
94.750.0110.010
94.800.0110.011
94.850.0110.011
94.900.0110.011
94.950.0110.011
95.000.0110.012
95.050.0110.012
95.100.0110.012
95.150.0110.012
Page 151
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NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025 Page 152
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 50P: Subsurface Basin Lot 4
Inflow Area = 1,850 sf, 100.00% Impervious, Inflow Depth = 3.81" for 2 YR-F event Inflow = 0.18 cfs @ 12.09 hrs, Volume= 587 cf Outflow = 0.05 cfs @ 11.86 hrs, Volume= 587 cf, Atten=74%, Lag=0.0 min Discarded = 0.05 cfs @ 11.86 hrs, Volume= 587 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 93.44' @ 12.22 hrs Surf.Area= 0.011 ac Storage= 0.002 af Plug-Flow detention time= 7.3 min calculated for 587 cf (100% of inflow) Center-of-Mass det. time= 7.3 min (755.7 - 748.4)
VolumeInvertAvail.StorageStorage Description
#1A93.00'0.007 af7.65"W x 64.33"L x 2.17"H Field A
0.024 af Overall - 0.007 af Embedded = 0.017 af x 40.0% Voids
#2A93.33'0.005 afADS N-12 15" x 9 Inside #1 Inside = 14.8"W x 14.8"H => 1.20 sf x 20.00"L = 24.0 cf Outside = 18.0"W x 18.0"H => 1.60 sf x 20.00"L = 31.9 cf 9 Chambers in 3 Rows 6.31' Header x 1.20 sf x 2 = 15.2 cf Inside
0.012 af Total Available Storage
Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Discarded93.00'4.050 in/hr Exfiltration over Surface area
Discarded OutFlowMax=0.05 cfs @ 11.86 hrsHW=93.02' (Free Discharge)
1=Exfiltration (Exfiltration Controls 0.05 cfs)
Pond 50P: Subsurface Basin Lot 4
Exfiltration
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Analysis - Proposed Conditions NOAA 24-h Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 50P: Subsurface Basin Lot 4 - Chamber Wizard Field A
Chamber Model = ADS N-12 15" (ADS N-12ยฎ Pipe) Inside= 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside= 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf 18.0" Wide + 10.9" Spacing = 28.9" C-C Row Spacing 3 Chambers/Row x 20.00' Long +1.50' Header x 2 = 63.00' Row Length +8.0" End Stone x 2 = 64.33' Base Length 3 Rows x 18.0" Wide + 10.9" Spacing x 2 + 8.0" Side Stone x 2 = 7.65' Base Width 4.0" Stone Base + 18.0" Chamber Height + 4.0" Stone Cover = 2.17' Field Height 9 Chambers x 24.0 cf + 6.31' Header x 1.20 sf x 2 = 231.2 cf Chamber Storage 9 Chambers x 31.9 cf + 6.31' Header x 1.60 sf x 2 = 307.5 cf Displacement 1,065.8 cf Field - 307.5 cf Chambers = 758.3 cf Stone x 40.0% Voids = 303.3 cf Stone Storage Chamber Storage + Stone Storage = 534.5 cf = 0.012 af Overall Storage Efficiency = 50.1% Overall System Size = 64.33' x 7.65' x 2.17' 9 Chambers 39.5 cy Field 28.1 cy Stone
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NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025 Page 154
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 50P: Subsurface Basin Lot 4
Pond 50P: Subsurface Basin Lot 4
Stage-Discharge
โ˜ Discarded
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NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 155
Pond 50P: Subsurface Basin Lot 4
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NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 50P: Subsurface Basin Lot 4
Time (hours)Inflow (cfs)Storage (acre-feet)Elevation (feet)Discarded (cfs)
0.000.000.00093.000.00
2.000.000.00093.000.00
4.000.000.00093.000.00
6.000.000.00093.000.00
8.000.000.00093.000.00
10.000.010.00093.000.01
12.000.110.00193.140.05
14.000.010.00093.000.01
16.000.000.00093.000.00
18.000.000.00093.000.00
20.000.000.00093.000.00
22.000.000.00093.000.00
24.000.000.00093.000.00
26.000.000.00093.000.00
28.000.000.00093.000.00
30.000.000.00093.000.00
32.000.000.00093.000.00
34.000.000.00093.000.00
36.000.000.00093.000.00
38.000.000.00093.000.00
40.000.000.00093.000.00
42.000.000.00093.000.00
44.000.000.00093.000.00
46.000.000.00093.000.00
48.000.000.00093.000.00
50.000.000.00093.000.00
52.000.000.00093.000.00
54.000.000.00093.000.00
56.000.000.00093.000.00
58.000.000.00093.000.00
60.000.000.00093.000.00
62.000.000.00093.000.00
64.000.000.00093.000.00
66.000.000.00093.000.00
68.000.000.00093.000.00
70.000.000.00093.000.00
72.000.000.00093.000.00
Page 156
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NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025
2 YR-F Rainfall=4.04" Printed 10/24/2025 Page 157
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 50P: Subsurface Basin Lot 4
Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
93.000.0094.040.05
93.020.0594.060.05
93.040.0594.080.05
93.060.0594.100.05
93.080.0594.120.05
93.100.0594.140.05
93.120.0594.160.05
93.140.0594.180.05
93.160.0594.200.05
93.180.0594.220.05
93.200.0594.240.05
93.220.0594.260.05
93.240.0594.280.05
93.260.0594.300.05
93.280.0594.320.05
93.300.0594.340.05
93.320.0594.360.05
93.340.0594.380.05
93.360.0594.400.05
93.380.0594.420.05
93.400.0594.440.05
93.420.0594.460.05
93.440.0594.480.05
93.460.0594.500.05
93.480.0594.520.05
93.500.0594.540.05
93.520.0594.560.05
93.540.0594.580.05
93.560.0594.600.05
93.580.0594.620.05
93.600.0594.640.05
93.620.0594.660.05
93.640.0594.680.05
93.660.0594.700.05
93.680.0594.720.05
93.700.0594.740.05
93.720.0594.760.05
93.740.0594.780.05
93.760.0594.800.05
93.780.0594.820.05
93.800.0594.840.05
93.820.0594.860.05
93.840.0594.880.05
93.860.0594.900.05
93.880.0594.920.05
93.900.0594.940.05
93.920.0594.960.05
93.940.0594.980.05
93.960.0595.000.05
93.980.0595.020.05
94.000.0595.040.05
94.020.0595.060.05
Elevation (feet)Discarded (cfs)
95.080.05
95.100.05
95.120.05
95.140.05
95.160.05
Page 779 Download HTML
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025
Stage-Area-Storage for Pond 50P: Subsurface Basin Lot 4
Elevation (feet)Surface (acres)Storage (acre-feet)
93.000.0110.000
93.050.0110.000
93.100.0110.000
93.150.0110.001
93.200.0110.001
93.250.0110.001
93.300.0110.001
93.350.0110.002
93.400.0110.002
93.450.0110.002
93.500.0110.002
93.550.0110.002
93.600.0110.003
93.650.0110.003
93.700.0110.003
93.750.0110.004
93.800.0110.004
93.850.0110.004
93.900.0110.005
93.950.0110.005
94.000.0110.006
94.050.0110.006
94.100.0110.006
94.150.0110.007
94.200.0110.007
94.250.0110.007
94.300.0110.008
94.350.0110.008
94.400.0110.008
94.450.0110.009
94.500.0110.009
94.550.0110.009
94.600.0110.010
94.650.0110.010
94.700.0110.010
94.750.0110.010
94.800.0110.011
94.850.0110.011
94.900.0110.011
94.950.0110.011
95.000.0110.012
95.050.0110.012
95.100.0110.012
95.150.0110.012
Page 158
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 159
Summary for Pond 52P: Subsurface Basin Lot 6
Inflow Area = 1,850 sf, 100.00% Impervious, Inflow Depth = 3.81" for 2 YR-F event Inflow = 0.18 cfs @ 12.09 hrs, Volume= 587 cf Outflow = 0.07 cfs @ 11.93 hrs, Volume= 587 cf, Atten= 61%, Lag= 0.0 min Discarded = 0.07 cfs @ 11.93 hrs, Volume= 587 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 93.37' @ 12.12 hrs Surf.Area= 0.008 ac Storage= 0.001 af Plug-Flow detention time= 2.3 min calculated for 587 cf (100% of inflow) Center-of-Mass det. time= 2.3 min (750.6 - 748.4)
VolumeInvertAvail.StorageStorage Description
#1A93.00'0.005 af7.65"W x 47.33"L x 2.17"H Field A
0.018 af Overall - 0.005 af Embedded = 0.013 af x 40.0% Voids
#2A93.33'0.004 afADS N-12 15" x 6 Inside #1 Inside = 14.8"W x 14.8"H => 1.20 sf x 20.00"L = 24.0 cf Outside = 18.0"W x 18.0"H => 1.60 sf x 20.00"L = 31.9 cf Row Length Adjustment= +3.00' x 1.20 sf x 3 rows 6.31' Header x 1.20 sf x 2 = 15.2 cf Inside
0.009 af Total Available Storage
Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Discarded93.00'8.450 in/hr Exfiltration over Surface area
Discarded OutFlowMax=0.07 cfs @ 11.93 hrsHW=93.03' (Free Discharge)
โ€”1=Exfiltration (Exfiltration Controls 0.07 cfs)
Pond 52P: Subsurface Basin Lot 6
Exfiltration
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NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025 s LLC Page 160
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 52P: Subsurface Basin Lot 6 - Chamber Wizard Field A
Chamber Model = ADS N-12 15" (ADS N-12ยฎ Pipe) Inside= 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside= 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf Row Length Adjustment= +3.00' x 1.20 sf x 3 rows 18.0" Wide + 10.9" Spacing = 28.9" C-C Row Spacing 2 Chambers/Row x 20.00' Long +3.00' Row Adjustment +1.50' Header x 2 = 46.00' Row Length +8.0" End Stone x 2 = 47.33' Base Length 3 Rows x 18.0" Wide + 10.9" Spacing x 2 + 8.0" Side Stone x 2 = 7.65' Base Width 4.0" Stone Base + 18.0" Chamber Height + 4.0" Stone Cover = 2.17' Field Height 6 Chambers x 24.0 cf +3.00' Row Adjustment x 1.20 sf x 3 Rows + 6.31' Header x 1.20 sf x 2 = 170.0 cf Chamber Storage 6 Chambers x 31.9 cf +3.00' Row Adjustment x 1.60 sf x 3 Rows + 6.31' Header x 1.60 sf x 2 = 226.1 cf Displacement 784.1 cf Field - 226.1 cf Chambers = 558.1 cf Stone x 40.0% Voids = 223.2 cf Stone Storage Chamber Storage + Stone Storage = 393.2 cf = 0.009 af Overall Storage Efficiency = 50.1% Overall System Size = 47.33' x 7.65' x 2.17' 6 Chambers 29.0 cy Field 20.7 cy Stone
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NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 161
Pond 52P: Subsurface Basin Lot 6
Pond 52P: Subsurface Basin Lot 6
โ˜ Discarded
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NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 162
Pond 52P: Subsurface Basin Lot 6
Stage-Area-Storage
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NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 52P: Subsurface Basin Lot 6
Time (hours)Inflow (cfs)Storage (acre-feet)Elevation (feet)Discarded (cfs)
0.000.000.00093.000.00
2.000.000.00093.000.00
4.000.000.00093.000.00
6.000.000.00093.000.00
8.000.000.00093.000.00
10.000.010.00093.000.01
12.000.110.00093.090.07
14.000.010.00093.000.01
16.000.000.00093.000.00
18.000.000.00093.000.00
20.000.000.00093.000.00
22.000.000.00093.000.00
24.000.000.00093.000.00
26.000.000.00093.000.00
28.000.000.00093.000.00
30.000.000.00093.000.00
32.000.000.00093.000.00
34.000.000.00093.000.00
36.000.000.00093.000.00
38.000.000.00093.000.00
40.000.000.00093.000.00
42.000.000.00093.000.00
44.000.000.00093.000.00
46.000.000.00093.000.00
48.000.000.00093.000.00
50.000.000.00093.000.00
52.000.000.00093.000.00
54.000.000.00093.000.00
56.000.000.00093.000.00
58.000.000.00093.000.00
60.000.000.00093.000.00
62.000.000.00093.000.00
64.000.000.00093.000.00
66.000.000.00093.000.00
68.000.000.00093.000.00
70.000.000.00093.000.00
72.000.000.00093.000.00
Page 163
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NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 52P: Subsurface Basin Lot 6
Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
93.000.0094.040.07
93.020.0794.060.07
93.040.0794.080.07
93.060.0794.100.07
93.080.0794.120.07
93.100.0794.140.07
93.120.0794.160.07
93.140.0794.180.07
93.160.0794.200.07
93.180.0794.220.07
93.200.0794.240.07
93.220.0794.260.07
93.240.0794.280.07
93.260.0794.300.07
93.280.0794.320.07
93.300.0794.340.07
93.320.0794.360.07
93.340.0794.380.07
93.360.0794.400.07
93.380.0794.420.07
93.400.0794.440.07
93.420.0794.460.07
93.440.0794.480.07
93.460.0794.500.07
93.480.0794.520.07
93.500.0794.540.07
93.520.0794.560.07
93.540.0794.580.07
93.560.0794.600.07
93.580.0794.620.07
93.600.0794.640.07
93.620.0794.660.07
93.640.0794.680.07
93.660.0794.700.07
93.680.0794.720.07
93.700.0794.740.07
93.720.0794.760.07
93.740.0794.780.07
93.760.0794.800.07
93.780.0794.820.07
93.800.0794.840.07
93.820.0794.860.07
93.840.0794.880.07
93.860.0794.900.07
93.880.0794.920.07
93.900.0794.940.07
93.920.0794.960.07
93.940.0794.980.07
93.960.0795.000.07
93.980.0795.020.07
94.000.0795.040.07
94.020.0795.060.07
Elevation (feet)Discarded (cfs)
95.080.07
95.100.07
95.120.07
95.140.07
95.160.07
Page 164
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025
Stage-Area-Storage for Pond 52P: Subsurface Basin Lot 6
Elevation (feet)Surface (acres)Storage (acre-feet)
93.000.0080.000
93.050.0080.000
93.100.0080.000
93.150.0080.000
93.200.0080.001
93.250.0080.001
93.300.0080.001
93.350.0080.001
93.400.0080.001
93.450.0080.001
93.500.0080.002
93.550.0080.002
93.600.0080.002
93.650.0080.002
93.700.0080.002
93.750.0080.003
93.800.0080.003
93.850.0080.003
93.900.0080.003
93.950.0080.004
94.000.0080.004
94.050.0080.004
94.100.0080.005
94.150.0080.005
94.200.0080.005
94.250.0080.005
94.300.0080.006
94.350.0080.006
94.400.0080.006
94.450.0080.006
94.500.0080.007
94.550.0080.007
94.600.0080.007
94.650.0080.007
94.700.0080.008
94.750.0080.008
94.800.0080.008
94.850.0080.008
94.900.0080.008
94.950.0080.008
95.000.0080.008
95.050.0080.009
95.100.0080.009
95.150.0080.009
Page 165
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NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 166
Summary for Pond 56P: Subsurface Basin Lot 7
Inflow Area = 1,850 sf,100.00% Impervious, Inflow Depth = 3.81" for 2 YR-F event Inflow = 0.18 cfs @ 12.09 hrs, Volume= 587 cf Outflow = 0.08 cfs @ 11.94 hrs, Volume= 587 cf, Atten= 55%, Lag= 0.0 min Discarded = 0.08 cfs @ 11.94 hrs, Volume= 587 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 94.33' @ 12.12 hrs Surf.Area= 0.008 ac Storage= 0.001 af Plug-Flow detention time= 1.6 min calculated for 587 cf (100% of inflow) Center-of-Mass det. time= 1.6 min (749.9 - 748.4)
VolumeInvertAvail.StorageStorage Description
#1A94.00'0.005 af7.65"W x 45.33"L x 2.17"H Field A
0.017 af Overall - 0.005 af Embedded = 0.012 af x 40.0% Voids
#2A94.33'0.004 afADS N-12 15" x 6 Inside #1 Inside = 14.8"W x 14.8"H => 1.20 sf x 20.00"L = 24.0 cf Outside = 18.0"W x 18.0"H => 1.60 sf x 20.00"L = 31.9 cf Row Length Adjustment= +1.00' x 1.20 sf x 3 rows 6.31' Header x 1.20 sf x 2 = 15.2 cf Inside
0.000 afTotal Available Storage
0.009 af Total Available Storage
Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Discarded94.00'10.000 in/hr Exfiltration over Surface area
Discarded OutFlowMax=0.08 cfs @ 11.94 hrsHW=94.03' (Free Discharge)
โ€”1=Exfiltration (Exfiltration Controls 0.08 cfs)
Pond 56P: Subsurface Basin Lot 7
Exfiltration
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 56P: Subsurface Basin Lot 7 - Chamber Wizard Field A
Chamber Model = ADS N-12 15" (ADS N-12ยฎ Pipe) Inside= 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside= 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf Row Length Adjustment= +1.00' x 1.20 sf x 3 rows 18.0" Wide + 10.9" Spacing = 28.9" C-C Row Spacing 2 Chambers/Row x 20.00' Long +1.00' Row Adjustment +1.50' Header x 2 = 44.00' Row Length +8.0" End Stone x 2 = 45.33' Base Length 3 Rows x 18.0" Wide + 10.9" Spacing x 2 + 8.0" Side Stone x 2 = 7.65' Base Width 4.0" Stone Base + 18.0" Chamber Height + 4.0" Stone Cover = 2.17' Field Height 6 Chambers x 24.0 cf +1.00' Row Adjustment x 1.20 sf x 3 Rows + 6.31' Header x 1.20 sf x 2 = 162.8 cf Chamber Storage 6 Chambers x 31.9 cf +1.00' Row Adjustment x 1.60 sf x 3 Rows + 6.31' Header x 1.60 sf x 2 = 216.5 cf Displacement 751.0 cf Field - 216.5 cf Chambers = 534.5 cf Stone x 40.0% Voids = 213.8 cf Stone Storage Chamber Storage + Stone Storage = 376.6 cf = 0.009 af Overall Storage Efficiency = 50.1% Overall System Size = 45.33' x 7.65' x 2.17' 6 Chambers 27.8 cy Field 19.8 cy Stone
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NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 168
Pond 56P: Subsurface Basin Lot 7
Pond 56P: Subsurface Basin Lot 7
โ˜ Discarded
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NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 169
Pond 56P: Subsurface Basin Lot 7
Stage-Area-Storage
0.000 0.001 0.001 0.002 0.002 0.003 0.003 0.004 0.004 0.005 0.005 0.006 0.006 0.007 0.007 0.008 0.009 Storage (acre-feet)
Surface Storage
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NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 56P: Subsurface Basin Lot 7
Time (hours)Inflow (cfs)Storage (acre-feet)Elevation (feet)Discarded (cfs)
0.000.000.00094.000.00
2.000.000.00094.000.00
4.000.000.00094.000.00
6.000.000.00094.000.00
8.000.000.00094.000.00
10.000.010.00094.000.01
12.000.110.00094.070.08
14.000.010.00094.000.01
16.000.000.00094.000.00
18.000.000.00094.000.00
20.000.000.00094.000.00
22.000.000.00094.000.00
24.000.000.00094.000.00
26.000.000.00094.000.00
28.000.000.00094.000.00
30.000.000.00094.000.00
32.000.000.00094.000.00
34.000.000.00094.000.00
36.000.000.00094.000.00
38.000.000.00094.000.00
40.000.000.00094.000.00
42.000.000.00094.000.00
44.000.000.00094.000.00
46.000.000.00094.000.00
48.000.000.00094.000.00
50.000.000.00094.000.00
52.000.000.00094.000.00
54.000.000.00094.000.00
56.000.000.00094.000.00
58.000.000.00094.000.00
60.000.000.00094.000.00
62.000.000.00094.000.00
64.000.000.00094.000.00
66.000.000.00094.000.00
68.000.000.00094.000.00
70.000.000.00094.000.00
72.000.000.00094.000.00
Page 170
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NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 56P: Subsurface Basin Lot 7
Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
94.000.0095.040.08
94.020.0895.060.08
94.040.0895.080.08
94.060.0895.100.08
94.080.0895.120.08
94.100.0895.140.08
94.120.0895.160.08
94.140.0895.180.08
94.160.0895.200.08
94.180.0895.220.08
94.200.0895.240.08
94.220.0895.260.08
94.240.0895.280.08
94.260.0895.300.08
94.280.0895.320.08
94.300.0895.340.08
94.320.0895.360.08
94.340.0895.380.08
94.360.0895.400.08
94.380.0895.420.08
94.400.0895.440.08
94.420.0895.460.08
94.440.0895.480.08
94.460.0895.500.08
94.480.0895.520.08
94.500.0895.540.08
94.520.0895.560.08
94.540.0895.580.08
94.560.0895.600.08
94.580.0895.620.08
94.600.0895.640.08
94.620.0895.660.08
94.640.0895.680.08
94.660.0895.700.08
94.680.0895.720.08
94.700.0895.740.08
94.720.0895.760.08
94.740.0895.780.08
94.760.0895.800.08
94.780.0895.820.08
94.800.0895.840.08
94.820.0895.860.08
94.840.0895.880.08
94.860.0895.900.08
94.880.0895.920.08
94.900.0895.940.08
94.920.0895.960.08
94.940.0895.980.08
94.960.0896.000.08
94.980.0896.020.08
95.000.0896.040.08
95.020.0896.060.08
Elevation (feet)Discarded (cfs)
96.080.08
96.100.08
96.120.08
96.140.08
96.160.08
Page 171
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-F Rainfall=4.04" Printed 10/24/2025
Stage-Area-Storage for Pond 56P: Subsurface Basin Lot 7
Elevation (feet)Surface (acres)Storage (acre-feet)
94.000.0080.000
94.050.0080.000
94.100.0080.000
94.150.0080.000
94.200.0080.001
94.250.0080.001
94.300.0080.001
94.350.0080.001
94.400.0080.001
94.450.0080.001
94.500.0080.002
94.550.0080.002
94.600.0080.002
94.650.0080.002
94.700.0080.002
94.750.0080.003
94.800.0080.003
94.850.0080.003
94.900.0080.003
94.950.0080.004
95.000.0080.004
95.050.0080.004
95.100.0080.004
95.150.0080.005
95.200.0080.005
95.250.0080.005
95.300.0080.005
95.350.0080.006
95.400.0080.006
95.450.0080.006
95.500.0080.006
95.550.0080.007
95.600.0080.007
95.650.0080.007
95.700.0080.007
95.750.0080.007
95.800.0080.007
95.850.0080.008
95.900.0080.008
95.950.0080.008
96.000.0080.008
96.050.0080.008
96.100.0080.008
96.150.0080.009
Page 172
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025 ons LLC Page 173
Time span=0.00-72.00 hrs, dt=0.01 hrs, 7201 points
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious
Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method
Subcatchment 36S: Roof Lot 1Runoff Area=1,850 sf 100.00% Impervious Runoff Depth=5.14" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.24 cfs 793 cf
Subcatchment 37S: Roof Lot 8Runoff Area=1,850 sf 100.00% Impervious Runoff Depth=5.14" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.24 cfs 793 cf
Subcatchment 38S: Roof Lot 2Runoff Area=1,850 sf 100.00% Impervious Runoff Depth=5.14" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.24 cfs 793 cf
Subcatchment 40S: Roof Lot 9Runoff Area=1,850 sf 100.00% Impervious Runoff Depth=5.14" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.24 cfs 793 cf
Subcatchment 42S: Roof Lot 10Runoff Area=1,850 sf 100.00% Impervious Runoff Depth=5.14" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.24 cfs 793 cf
Subcatchment 44S: Roof Lot 3Runoff Area=1,850 sf 100.00% Impervious Runoff Depth=5.14" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.24 cfs 793 cf
Subcatchment 48S: Roof Lot 4Runoff Area=1,850 sf 100.00% Impervious Runoff Depth=5.14" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.24 cfs 793 cf
Subcatchment 51S: Roof Lot 6Runoff Area=1,850 sf 100.00% Impervious Runoff Depth=5.14" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.24 cfs 793 cf
Subcatchment 55S: Roof Lot 7Runoff Area=1,850 sf 100.00% Impervious Runoff Depth=5.14" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.24 cfs 793 cf
Pond 37P: Subsurface Basin Lot 1Peak Elev=91.75' Storage=0.004 af Inflow=0.24 cfs 793 cf Outflow=0.03 cfs 793 cf
Pond 38P: Subsurface Basin Lot 8Peak Elev=94.60' Storage=0.002 af Inflow=0.24 cfs 793 cf Outflow=0.08 cfs 793 cf
Pond 39P: Subsurface Basin Lot 2Peak Elev=93.65' Storage=0.002 af Inflow=0.24 cfs 793 cf Outflow=0.07 cfs 793 cf
Pond 41P: Subsurface Basin Lot 9Peak Elev=93.66' Storage=0.002 af Inflow=0.24 cfs 793 cf Outflow=0.07 cfs 793 cf
Pond 43P: Subsurface Basin Lot 10Peak Elev=92.60' Storage=0.002 af Inflow=0.24 cfs 793 cf Outflow=0.08 cfs 793 cf
Pond 46P: Subsurface Basin Lot 3Peak Elev=93.69' Storage=0.003 af Inflow=0.24 cfs 793 cf Outflow=0.05 cfs 793 cf
Pond 50P: Subsurface Basin Lot 4Peak Elev=93.69' Storage=0.003 af Inflow=0.24 cfs 793 cf Outflow=0.05 cfs 793 cf
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Analysis - Proposed Conditions NOAA 24-hr D 10 YR-C Rainfall=5.38" Prepared by Civil Core Consulting Printed 10/24/2025 HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 174
Pond 52P: Subsurface Basin Lot 6
Pond 56P: Subsurface Basin Lot 7 Peak Elev=93.65' Storage=0.002 af Inflow=0.24 cfs 793 cf Outflow=0.07 cfs 793 cf
Total Runoff Area = 16,650 sf Peak Elev=94.60' Storage=0.002 af Inflow=0.24 cfs 793 cf Outflow=0.08 cfs 793 cf
Peak Elev=93.65' Storage=0.002 af Inflow=0.24 cfs 793 cf Outflow=0.07 cfs 793 cf
Peak Elev=94.60' Storage=0.002 af Inflow=0.24 cfs 793 cf Outflow=0.08 cfs 793 cf
Runoff Volume = 7,135 cf Average Runoff Depth = 5.14" 0.00% Pervious = 0 sf 100.00% Impervious = 16,650 sf
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NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 175
Summary for Subcatchment 36S: Roof Lot 1
Runoff = 0.24 cfs @ 12.09 hrs, Volume= 793 cf, Depth= 5.14" Routed to Pond 37P : Subsurface Basin Lot 1
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-C Rainfall=5.38"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
0.4 45 2.00 Direct Entry, Pipe Flow
Subcatchment 36S: Roof Lot 1
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NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 36S: Roof Lot 1
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.130.000.030.00
4.000.280.000.130.00
6.000.460.000.280.00
8.000.700.000.500.01
10.001.070.000.860.01
12.002.580.002.350.15
14.004.310.004.080.01
16.004.680.004.450.01
18.004.920.004.680.00
20.005.100.004.860.00
22.005.250.005.010.00
24.005.380.005.140.00
26.005.380.005.140.00
28.005.380.005.140.00
30.005.380.005.140.00
32.005.380.005.140.00
34.005.380.005.140.00
36.005.380.005.140.00
38.005.380.005.140.00
40.005.380.005.140.00
42.005.380.005.140.00
44.005.380.005.140.00
46.005.380.005.140.00
48.005.380.005.140.00
50.005.380.005.140.00
52.005.380.005.140.00
54.005.380.005.140.00
56.005.380.005.140.00
58.005.380.005.140.00
60.005.380.005.140.00
62.005.380.005.140.00
64.005.380.005.140.00
66.005.380.005.140.00
68.005.380.005.140.00
70.005.380.005.140.00
72.005.380.005.140.00
Page 176
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NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 177
Summary for Subcatchment 37S: Roof Lot 8
Runoff = 0.24 cfs @ 12.09 hrs, Volume= 793 cf, Depth= 5.14" Routed to Pond 38P : Subsurface Basin Lot 8
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-C Rainfall=5.38"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
0.4 45 2.00 Direct Entry, Pipe Flow
Subcatchment 37S: Roof Lot 8
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NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 37S: Roof Lot 8
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.130.000.030.00
4.000.280.000.130.00
6.000.460.000.280.00
8.000.700.000.500.01
10.001.070.000.860.01
12.002.580.002.350.15
14.004.310.004.080.01
16.004.680.004.450.01
18.004.920.004.680.00
20.005.100.004.860.00
22.005.250.005.010.00
24.005.380.005.140.00
26.005.380.005.140.00
28.005.380.005.140.00
30.005.380.005.140.00
32.005.380.005.140.00
34.005.380.005.140.00
36.005.380.005.140.00
38.005.380.005.140.00
40.005.380.005.140.00
42.005.380.005.140.00
44.005.380.005.140.00
46.005.380.005.140.00
48.005.380.005.140.00
50.005.380.005.140.00
52.005.380.005.140.00
54.005.380.005.140.00
56.005.380.005.140.00
58.005.380.005.140.00
60.005.380.005.140.00
62.005.380.005.140.00
64.005.380.005.140.00
66.005.380.005.140.00
68.005.380.005.140.00
70.005.380.005.140.00
72.005.380.005.140.00
Page 178
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NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 179
Summary for Subcatchment 38S: Roof Lot 2
Runoff = 0.24 cfs @ 12.09 hrs, Volume= 793 cf, Depth= 5.14" Routed to Pond 39P : Subsurface Basin Lot 2
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-C Rainfall=5.38"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
0.4 45 2.00 Direct Entry, Pipe Flow
Subcatchment 38S: Roof Lot 2
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NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025
0 YR-C Rainfall=5.38" Printed 10/24/2025 Page 180
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 38S: Roof Lot 2
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.130.000.030.00
4.000.280.000.130.00
6.000.460.000.280.00
8.000.700.000.500.01
10.001.070.000.860.01
12.002.580.002.350.15
14.004.310.004.080.01
16.004.680.004.450.01
18.004.920.004.680.00
20.005.100.004.860.00
22.005.250.005.010.00
24.005.380.005.140.00
26.005.380.005.140.00
28.005.380.005.140.00
30.005.380.005.140.00
32.005.380.005.140.00
34.005.380.005.140.00
36.005.380.005.140.00
38.005.380.005.140.00
40.005.380.005.140.00
42.005.380.005.140.00
44.005.380.005.140.00
46.005.380.005.140.00
48.005.380.005.140.00
50.005.380.005.140.00
52.005.380.005.140.00
54.005.380.005.140.00
56.005.380.005.140.00
58.005.380.005.140.00
60.005.380.005.140.00
62.005.380.005.140.00
64.005.380.005.140.00
66.005.380.005.140.00
68.005.380.005.140.00
70.005.380.005.140.00
72.005.380.005.140.00
Page 802 Download HTML
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
R-C Rainfall=5.38" Printed 10/24/2025 Page 181
Summary for Subcatchment 40S: Roof Lot 9
Runoff = 0.24 cfs @ 12.09 hrs, Volume= 793 cf, Depth= 5.14" Routed to Pond 41P : Subsurface Basin Lot 9
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-C Rainfall=5.38"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
0.4 45 2.00 Direct Entry, Pipe Flow
Subcatchment 40S: Roof Lot 9
Page 803 Download HTML
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 40S: Roof Lot 9
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.130.000.030.00
4.000.280.000.130.00
6.000.460.000.280.00
8.000.700.000.500.01
10.001.070.000.860.01
12.002.580.002.350.15
14.004.310.004.080.01
16.004.680.004.450.01
18.004.920.004.680.00
20.005.100.004.860.00
22.005.250.005.010.00
24.005.380.005.140.00
26.005.380.005.140.00
28.005.380.005.140.00
30.005.380.005.140.00
32.005.380.005.140.00
34.005.380.005.140.00
36.005.380.005.140.00
38.005.380.005.140.00
40.005.380.005.140.00
42.005.380.005.140.00
44.005.380.005.140.00
46.005.380.005.140.00
48.005.380.005.140.00
50.005.380.005.140.00
52.005.380.005.140.00
54.005.380.005.140.00
56.005.380.005.140.00
58.005.380.005.140.00
60.005.380.005.140.00
62.005.380.005.140.00
64.005.380.005.140.00
66.005.380.005.140.00
68.005.380.005.140.00
70.005.380.005.140.00
72.005.380.005.140.00
Page 182
Page 804 Download HTML
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
R-C Rainfall=5.38" Printed 10/24/2025 Page 183
Summary for Subcatchment 42S: Roof Lot 10
Runoff = 0.24 cfs @ 12.09 hrs, Volume= 793 cf, Depth= 5.14" Routed to Pond 43P : Subsurface Basin Lot 10
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-C Rainfall=5.38"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
0.4 45 2.00 Direct Entry, Pipe Flow
Subcatchment 42S: Roof Lot 10
Page 805 Download HTML
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 42S: Roof Lot 10
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.130.000.030.00
4.000.280.000.130.00
6.000.460.000.280.00
8.000.700.000.500.01
10.001.070.000.860.01
12.002.580.002.350.15
14.004.310.004.080.01
16.004.680.004.450.01
18.004.920.004.680.00
20.005.100.004.860.00
22.005.250.005.010.00
24.005.380.005.140.00
26.005.380.005.140.00
28.005.380.005.140.00
30.005.380.005.140.00
32.005.380.005.140.00
34.005.380.005.140.00
36.005.380.005.140.00
38.005.380.005.140.00
40.005.380.005.140.00
42.005.380.005.140.00
44.005.380.005.140.00
46.005.380.005.140.00
48.005.380.005.140.00
50.005.380.005.140.00
52.005.380.005.140.00
54.005.380.005.140.00
56.005.380.005.140.00
58.005.380.005.140.00
60.005.380.005.140.00
62.005.380.005.140.00
64.005.380.005.140.00
66.005.380.005.140.00
68.005.380.005.140.00
70.005.380.005.140.00
72.005.380.005.140.00
Page 184
Page 806 Download HTML
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
R-C Rainfall=5.38" Printed 10/24/2025 Page 185
Summary for Subcatchment 44S: Roof Lot 3
Runoff = 0.24 cfs @ 12.09 hrs, Volume= 793 cf, Depth= 5.14" Routed to Pond 46P : Subsurface Basin Lot 3
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-C Rainfall=5.38"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
0.4 45 2.00 Direct Entry, Pipe Flow
Subcatchment 44S: Roof Lot 3
Page 807 Download HTML
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 44S: Roof Lot 3
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.130.000.030.00
4.000.280.000.130.00
6.000.460.000.280.00
8.000.700.000.500.01
10.001.070.000.860.01
12.002.580.002.350.15
14.004.310.004.080.01
16.004.680.004.450.01
18.004.920.004.680.00
20.005.100.004.860.00
22.005.250.005.010.00
24.005.380.005.140.00
26.005.380.005.140.00
28.005.380.005.140.00
30.005.380.005.140.00
32.005.380.005.140.00
34.005.380.005.140.00
36.005.380.005.140.00
38.005.380.005.140.00
40.005.380.005.140.00
42.005.380.005.140.00
44.005.380.005.140.00
46.005.380.005.140.00
48.005.380.005.140.00
50.005.380.005.140.00
52.005.380.005.140.00
54.005.380.005.140.00
56.005.380.005.140.00
58.005.380.005.140.00
60.005.380.005.140.00
62.005.380.005.140.00
64.005.380.005.140.00
66.005.380.005.140.00
68.005.380.005.140.00
70.005.380.005.140.00
72.005.380.005.140.00
Page 186
Page 808 Download HTML
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
R-C Rainfall=5.38" Printed 10/24/2025 Page 187
Summary for Subcatchment 48S: Roof Lot 4
Runoff = 0.24 cfs @ 12.09 hrs, Volume= 793 cf, Depth= 5.14" Routed to Pond 50P : Subsurface Basin Lot 4
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-C Rainfall=5.38"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
0.4 45 2.00 Direct Entry, Pipe Flow
Subcatchment 48S: Roof Lot 4
Page 809 Download HTML
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 48S: Roof Lot 4
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.130.000.030.00
4.000.280.000.130.00
6.000.460.000.280.00
8.000.700.000.500.01
10.001.070.000.860.01
12.002.580.002.350.15
14.004.310.004.080.01
16.004.680.004.450.01
18.004.920.004.680.00
20.005.100.004.860.00
22.005.250.005.010.00
24.005.380.005.140.00
26.005.380.005.140.00
28.005.380.005.140.00
30.005.380.005.140.00
32.005.380.005.140.00
34.005.380.005.140.00
36.005.380.005.140.00
38.005.380.005.140.00
40.005.380.005.140.00
42.005.380.005.140.00
44.005.380.005.140.00
46.005.380.005.140.00
48.005.380.005.140.00
50.005.380.005.140.00
52.005.380.005.140.00
54.005.380.005.140.00
56.005.380.005.140.00
58.005.380.005.140.00
60.005.380.005.140.00
62.005.380.005.140.00
64.005.380.005.140.00
66.005.380.005.140.00
68.005.380.005.140.00
70.005.380.005.140.00
72.005.380.005.140.00
Page 188
Page 810 Download HTML
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
R-C Rainfall=5.38" Printed 10/24/2025 Page 189
Summary for Subcatchment 51S: Roof Lot 6
Runoff = 0.24 cfs @ 12.09 hrs, Volume= 793 cf, Depth= 5.14" Routed to Pond 52P : Subsurface Basin Lot 6
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-C Rainfall=5.38"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
0.4 45 2.00 Direct Entry, Pipe Flow
Subcatchment 51S: Roof Lot 6
Page 811 Download HTML
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 51S: Roof Lot 6
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.130.000.030.00
4.000.280.000.130.00
6.000.460.000.280.00
8.000.700.000.500.01
10.001.070.000.860.01
12.002.580.002.350.15
14.004.310.004.080.01
16.004.680.004.450.01
18.004.920.004.680.00
20.005.100.004.860.00
22.005.250.005.010.00
24.005.380.005.140.00
26.005.380.005.140.00
28.005.380.005.140.00
30.005.380.005.140.00
32.005.380.005.140.00
34.005.380.005.140.00
36.005.380.005.140.00
38.005.380.005.140.00
40.005.380.005.140.00
42.005.380.005.140.00
44.005.380.005.140.00
46.005.380.005.140.00
48.005.380.005.140.00
50.005.380.005.140.00
52.005.380.005.140.00
54.005.380.005.140.00
56.005.380.005.140.00
58.005.380.005.140.00
60.005.380.005.140.00
62.005.380.005.140.00
64.005.380.005.140.00
66.005.380.005.140.00
68.005.380.005.140.00
70.005.380.005.140.00
72.005.380.005.140.00
Page 190
Page 812 Download HTML
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 191
Summary for Subcatchment 55S: Roof Lot 7
Runoff = 0.24 cfs @ 12.09 hrs, Volume= 793 cf, Depth= 5.14" Routed to Pond 56P : Subsurface Basin Lot 7
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-C Rainfall=5.38"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
0.4 45 2.00 Direct Entry, Pipe Flow
Subcatchment 55S: Roof Lot 7
Page 813 Download HTML
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 55S: Roof Lot 7
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.130.000.030.00
4.000.280.000.130.00
6.000.460.000.280.00
8.000.700.000.500.01
10.001.070.000.860.01
12.002.580.002.350.15
14.004.310.004.080.01
16.004.680.004.450.01
18.004.920.004.680.00
20.005.100.004.860.00
22.005.250.005.010.00
24.005.380.005.140.00
26.005.380.005.140.00
28.005.380.005.140.00
30.005.380.005.140.00
32.005.380.005.140.00
34.005.380.005.140.00
36.005.380.005.140.00
38.005.380.005.140.00
40.005.380.005.140.00
42.005.380.005.140.00
44.005.380.005.140.00
46.005.380.005.140.00
48.005.380.005.140.00
50.005.380.005.140.00
52.005.380.005.140.00
54.005.380.005.140.00
56.005.380.005.140.00
58.005.380.005.140.00
60.005.380.005.140.00
62.005.380.005.140.00
64.005.380.005.140.00
66.005.380.005.140.00
68.005.380.005.140.00
70.005.380.005.140.00
72.005.380.005.140.00
Page 192
Page 814 Download HTML
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025 ons LLC Page 193
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 37P: Subsurface Basin Lot 1
Inflow Area = 1,850 sf,100.00% Impervious, Inflow Depth = 5.14" for 10 YR-C event Inflow = 0.24 cfs @ 12.09 hrs, Volume= 793 cf Outflow = 0.03 cfs @ 11.61 hrs, Volume= 793 cf, Atten= 86%, Lag= 0.0 min Discarded = 0.03 cfs @ 11.61 hrs, Volume= 793 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 91.75' @ 12.52 hrs Surf.Area= 0.013 ac Storage= 0.004 af Plug-Flow detention time= 30.6 min calculated for 793 cf (100% of inflow) Center-of-Mass det. time= 30.5 min (773.6 - 743.1)
VolumeInvertAvail.StorageStorage Description
#1A91.00'0.008 af10.06'W x 57.33'L x 2.17'H Field A
0.029 af Overall - 0.008 af Embedded = 0.020 af x 40.0% Voids
#2A91.33'0.006 afADS N-12 15" x 12 Inside #1 Inside = 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside = 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf Row Length Adjustment = -7.00' x 1.20 sf x 4 rows 8.72' Header x 1.20 sf x 2 = 20.9 cf Inside
0.014 af Total Available Storage
Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Discarded91.00'2.450 in/hr Exfiltration over Surface area
Discarded OutFlowMax=0.03 cfs @ 11.61 hrsHW=91.02' (Free Discharge)
1=Exfiltration (Exfiltration Controls 0.03 cfs)
Pond 37P: Subsurface Basin Lot 1
Exfiltration
Page 815 Download HTML
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025 ons LLC Page 194
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 37P: Subsurface Basin Lot 1 - Chamber Wizard Field A
Chamber Model = ADS N-12 15" (ADS N-12ยฎ Pipe) Inside= 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside= 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf Row Length Adjustment= -7.00' x 1.20 sf x 4 rows 18.0" Wide + 10.9" Spacing = 28.9" C-C Row Spacing 3 Chambers/Row x 20.00' Long -7.00' Row Adjustment +1.50' Header x 2 = 56.00' Row Length +8.0" End Stone x 2 = 57.33' Base Length 4 Rows x 18.0" Wide + 10.9" Spacing x 3 + 8.0" Side Stone x 2 = 10.06' Base Width 4.0" Stone Base + 18.0" Chamber Height + 4.0" Stone Cover = 2.17' Field Height 12 Chambers x 24.0 cf -7.00' Row Adjustment x 1.20 sf x 4 Rows + 8.72' Header x 1.20 sf x 2 = 275.3 cf Chamber Storage 12 Chambers x 31.9 cf -7.00' Row Adjustment x 1.60 sf x 4 Rows + 8.72' Header x 1.60 sf x 2 = 366.2 cf Displacement 1,248.8 cf Field - 366.2 cf Chambers = 882.6 cf Stone x 40.0% Voids = 353.0 cf Stone Storage Chamber Storage + Stone Storage = 628.4 cf = 0.014 af Overall Storage Efficiency = 50.3% Overall System Size = 57.33' x 10.06' x 2.17' 12 Chambers 46.3 cy Field 32.7 cy Stone
โ˜โ˜โ˜
Page 816 Download HTML
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025 ons LLC Page 195
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 37P: Subsurface Basin Lot 1
Pond 37P: Subsurface Basin Lot 1
โ˜ Discarded
Page 817 Download HTML
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 196
Pond 37P: Subsurface Basin Lot 1
Page 818 Download HTML
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 37P: Subsurface Basin Lot 1
Time (hours)Inflow (cfs)Storage (acre-feet)Elevation (feet)Discarded (cfs)
0.000.000.00091.000.00
2.000.000.00091.000.00
4.000.000.00091.000.00
6.000.000.00091.000.00
8.000.010.00091.000.01
10.000.010.00091.000.01
12.000.150.00291.310.03
14.000.010.00291.500.03
16.000.010.00091.000.01
18.000.000.00091.000.00
20.000.000.00091.000.00
22.000.000.00091.000.00
24.000.000.00091.000.00
26.000.000.00091.000.00
28.000.000.00091.000.00
30.000.000.00091.000.00
32.000.000.00091.000.00
34.000.000.00091.000.00
36.000.000.00091.000.00
38.000.000.00091.000.00
40.000.000.00091.000.00
42.000.000.00091.000.00
44.000.000.00091.000.00
46.000.000.00091.000.00
48.000.000.00091.000.00
50.000.000.00091.000.00
52.000.000.00091.000.00
54.000.000.00091.000.00
56.000.000.00091.000.00
58.000.000.00091.000.00
60.000.000.00091.000.00
62.000.000.00091.000.00
64.000.000.00091.000.00
66.000.000.00091.000.00
68.000.000.00091.000.00
70.000.000.00091.000.00
72.000.000.00091.000.00
Page 197
Page 819 Download HTML
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025
YR-C Rainfall=5.38" Printed 10/24/2025 Page 198
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 37P: Subsurface Basin Lot 1
Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
91.000.0092.040.03
91.020.0392.060.03
91.040.0392.080.03
91.060.0392.100.03
91.080.0392.120.03
91.100.0392.140.03
91.120.0392.160.03
91.140.0392.180.03
91.160.0392.200.03
91.180.0392.220.03
91.200.0392.240.03
91.220.0392.260.03
91.240.0392.280.03
91.260.0392.300.03
91.280.0392.320.03
91.300.0392.340.03
91.320.0392.360.03
91.340.0392.380.03
91.360.0392.400.03
91.380.0392.420.03
91.400.0392.440.03
91.420.0392.460.03
91.440.0392.480.03
91.460.0392.500.03
91.480.0392.520.03
91.500.0392.540.03
91.520.0392.560.03
91.540.0392.580.03
91.560.0392.600.03
91.580.0392.620.03
91.600.0392.640.03
91.620.0392.660.03
91.640.0392.680.03
91.660.0392.700.03
91.680.0392.720.03
91.700.0392.740.03
91.720.0392.760.03
91.740.0392.780.03
91.760.0392.800.03
91.780.0392.820.03
91.800.0392.840.03
91.820.0392.860.03
91.840.0392.880.03
91.860.0392.900.03
91.880.0392.920.03
91.900.0392.940.03
91.920.0392.960.03
91.940.0392.980.03
91.960.0393.000.03
91.980.0393.020.03
92.000.0393.040.03
92.020.0393.060.03
Elevation (feet)Discarded (cfs)
93.080.03
93.100.03
93.120.03
93.140.03
93.160.03
Page 820 Download HTML
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LL
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025
Stage-Area-Storage for Pond 37P: Subsurface Basin Lot 1
Elevation (feet)Surface (acres)Storage (acre-feet)
91.000.0130.000
91.050.0130.000
91.100.0130.001
91.150.0130.001
91.200.0130.001
91.250.0130.001
91.300.0130.002
91.350.0130.002
91.400.0130.002
91.450.0130.002
91.500.0130.002
91.550.0130.003
91.600.0130.003
91.650.0130.004
91.700.0130.004
91.750.0130.004
91.800.0130.005
91.850.0130.005
91.900.0130.006
91.950.0130.006
92.000.0130.006
92.050.0130.007
92.100.0130.007
92.150.0130.008
92.200.0130.008
92.250.0130.009
92.300.0130.009
92.350.0130.010
92.400.0130.010
92.450.0130.010
92.500.0130.011
92.550.0130.011
92.600.0130.012
92.650.0130.012
92.700.0130.012
92.750.0130.012
92.800.0130.013
92.850.0130.013
92.900.0130.013
92.950.0130.013
93.000.0130.014
93.050.0130.014
93.100.0130.014
93.150.0130.014
Page 199
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NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025 ons LLC Page 200
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 38P: Subsurface Basin Lot 8
Inflow Area = 1,850 sf, 100.00% Impervious, Inflow Depth = 5.14" for 10 YR-C event Inflow = 0.24 cfs @ 12.09 hrs, Volume= 793 cf Outflow = 0.08 cfs @ 11.92 hrs, Volume= 793 cf, Atten= 66%, Lag= 0.0 min Discarded = 0.08 cfs @ 11.92 hrs, Volume= 793 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 94.60' @ 12.20 hrs Surf.Area= 0.008 ac Storage= 0.002 af Plug-Flow detention time= 3.4 min calculated for 793 cf (100% of inflow) Center-of-Mass det. time= 3.4 min (746.4 - 743.1)
VolumeInvertAvail.StorageStorage Description
#1A94.00'0.005 af7.65"W x 45.33"L x 2.17"H Field A
0.017 af Overall - 0.005 af Embedded = 0.012 af x 40.0% Voids
#2A94.33'0.004 afADS N-12 15" x 6 Inside #1 Inside = 14.8"W x 14.8"H => 1.20 sf x 20.00"L = 24.0 cf Outside = 18.0"W x 18.0"H => 1.60 sf x 20.00"L = 31.9 cf Row Length Adjustment= +1.00' x 1.20 sf x 3 rows 6.31' Header x 1.20 sf x 2 = 15.2 cf Inside
0.000 afTotal Available Storage
0.009 af Total Available Storage
Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Discarded94.00'10.000 in/hr Exfiltration over Surface area
Discarded OutFlowMax=0.08 cfs @ 11.92 hrsHW=94.03' (Free Discharge)
1=Exfiltration (Exfiltration Controls 0.08 cfs)
Pond 38P: Subsurface Basin Lot 8
Exfiltration
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NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025 ons LLC Page 201
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 38P: Subsurface Basin Lot 8 - Chamber Wizard Field A
Chamber Model = ADS N-12 15" (ADS N-12ยฎ Pipe) Inside= 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside= 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf Row Length Adjustment= +1.00' x 1.20 sf x 3 rows 18.0" Wide + 10.9" Spacing = 28.9" C-C Row Spacing 2 Chambers/Row x 20.00' Long +1.00' Row Adjustment +1.50' Header x 2 = 44.00' Row Length +8.0" End Stone x 2 = 45.33' Base Length 3 Rows x 18.0" Wide + 10.9" Spacing x 2 + 8.0" Side Stone x 2 = 7.65' Base Width 4.0" Stone Base + 18.0" Chamber Height + 4.0" Stone Cover = 2.17' Field Height 6 Chambers x 24.0 cf +1.00' Row Adjustment x 1.20 sf x 3 Rows + 6.31' Header x 1.20 sf x 2 = 162.8 cf Chamber Storage 6 Chambers x 31.9 cf +1.00' Row Adjustment x 1.60 sf x 3 Rows + 6.31' Header x 1.60 sf x 2 = 216.5 cf Displacement 751.0 cf Field - 216.5 cf Chambers = 534.5 cf Stone x 40.0% Voids = 213.8 cf Stone Storage Chamber Storage + Stone Storage = 376.6 cf = 0.009 af Overall Storage Efficiency = 50.1% Overall System Size = 45.33' x 7.65' x 2.17' 6 Chambers 27.8 cy Field 19.8 cy Stone
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NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025 ons LLC Page 202
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 38P: Subsurface Basin Lot 8
Pond 38P: Subsurface Basin Lot 8
โ˜ Discarded
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 38P: Subsurface Basin Lot 8
Stage-Area-Storage
0.000 0.001 0.001 0.002 0.002 0.003 0.003 0.004 0.004 0.005 0.005 0.006 0.006 0.007 0.007 0.008 0.009 Storage (acre-feet)
Surface Storage
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NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025 ons LLC Page 204
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 38P: Subsurface Basin Lot 8
Time (hours)Inflow (cfs)Storage (acre-feet)Elevation (feet)Discarded (cfs)
0.000.000.00094.000.00
2.000.000.00094.000.00
4.000.000.00094.000.00
6.000.000.00094.000.00
8.000.010.00094.000.01
10.000.010.00094.000.01
12.000.150.00194.160.08
14.000.010.00094.000.01
16.000.010.00094.000.01
18.000.000.00094.000.00
20.000.000.00094.000.00
22.000.000.00094.000.00
24.000.000.00094.000.00
26.000.000.00094.000.00
28.000.000.00094.000.00
30.000.000.00094.000.00
32.000.000.00094.000.00
34.000.000.00094.000.00
36.000.000.00094.000.00
38.000.000.00094.000.00
40.000.000.00094.000.00
42.000.000.00094.000.00
44.000.000.00094.000.00
46.000.000.00094.000.00
48.000.000.00094.000.00
50.000.000.00094.000.00
52.000.000.00094.000.00
54.000.000.00094.000.00
56.000.000.00094.000.00
58.000.000.00094.000.00
60.000.000.00094.000.00
62.000.000.00094.000.00
64.000.000.00094.000.00
66.000.000.00094.000.00
68.000.000.00094.000.00
70.000.000.00094.000.00
72.000.000.00094.000.00
Page 826 Download HTML
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025 ons LLC Page 205
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 38P: Subsurface Basin Lot 8
Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
94.000.0095.040.08
94.020.0895.060.08
94.040.0895.080.08
94.060.0895.100.08
94.080.0895.120.08
94.100.0895.140.08
94.120.0895.160.08
94.140.0895.180.08
94.160.0895.200.08
94.180.0895.220.08
94.200.0895.240.08
94.220.0895.260.08
94.240.0895.280.08
94.260.0895.300.08
94.280.0895.320.08
94.300.0895.340.08
94.320.0895.360.08
94.340.0895.380.08
94.360.0895.400.08
94.380.0895.420.08
94.400.0895.440.08
94.420.0895.460.08
94.440.0895.480.08
94.460.0895.500.08
94.480.0895.520.08
94.500.0895.540.08
94.520.0895.560.08
94.540.0895.580.08
94.560.0895.600.08
94.580.0895.620.08
94.600.0895.640.08
94.620.0895.660.08
94.640.0895.680.08
94.660.0895.700.08
94.680.0895.720.08
94.700.0895.740.08
94.720.0895.760.08
94.740.0895.780.08
94.760.0895.800.08
94.780.0895.820.08
94.800.0895.840.08
94.820.0895.860.08
94.840.0895.880.08
94.860.0895.900.08
94.880.0895.920.08
94.900.0895.940.08
94.920.0895.960.08
94.940.0895.980.08
94.960.0896.000.08
94.980.0896.020.08
95.000.0896.040.08
95.020.0896.060.08
Elevation (feet)Discarded (cfs)
96.080.08
96.100.08
96.120.08
96.140.08
96.160.08
Page 827 Download HTML
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025 ons LLC Page 206
Stage-Area-Storage for Pond 38P: Subsurface Basin Lot 8
Elevation (feet)Surface (acres)Storage (acre-feet)
94.000.0080.000
94.050.0080.000
94.100.0080.000
94.150.0080.000
94.200.0080.001
94.250.0080.001
94.300.0080.001
94.350.0080.001
94.400.0080.001
94.450.0080.001
94.500.0080.002
94.550.0080.002
94.600.0080.002
94.650.0080.002
94.700.0080.002
94.750.0080.003
94.800.0080.003
94.850.0080.003
94.900.0080.003
94.950.0080.004
95.000.0080.004
95.050.0080.004
95.100.0080.004
95.150.0080.005
95.200.0080.005
95.250.0080.005
95.300.0080.005
95.350.0080.006
95.400.0080.006
95.450.0080.006
95.500.0080.006
95.550.0080.007
95.600.0080.007
95.650.0080.007
95.700.0080.007
95.750.0080.007
95.800.0080.007
95.850.0080.008
95.900.0080.008
95.950.0080.008
96.000.0080.008
96.050.0080.008
96.100.0080.008
96.150.0080.009
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NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025 ons LLC Page 207
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 39P: Subsurface Basin Lot 2
Inflow Area = 1,850 sf, 100.00% Impervious, Inflow Depth = 5.14" for 10 YR-C event Inflow = 0.24 cfs @ 12.09 hrs, Volume= 793 cf Outflow = 0.07 cfs @ 11.85 hrs, Volume= 793 cf, Atten= 71%, Lag= 0.0 min Discarded = 0.07 cfs @ 11.85 hrs, Volume= 793 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 93.65' @ 12.21 hrs Surf.Area= 0.009 ac Storage= 0.002 af Plug-Flow detention time= 5.3 min calculated for 793 cf (100% of inflow) Center-of-Mass det. time= 5.3 min (748.3 - 743.1)
VolumeInvertAvail.StorageStorage Description
#1A93.00'0.005 af7.65"W x 49.33"L x 2.17"H Field A
0.019 af Overall - 0.005 af Embedded = 0.013 af x 40.0% Voids
#2A93.33'0.004 afADS N-12 15" x 6 Inside #1 Inside = 14.8"W x 14.8"H => 1.20 sf x 20.00"L = 24.0 cf Outside = 18.0"W x 18.0"H => 1.60 sf x 20.00"L = 31.9 cf Row Length Adjustment= +5.00' x 1.20 sf x 3 rows 6.31' Header x 1.20 sf x 2 = 15.2 cf Inside
0.009 af Total Available Storage
Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Discarded93.00'7.850 in/hr Exfiltration over Surface area
Discarded OutFlowMax=0.07 cfs @ 11.85 hrsHW=93.02' (Free Discharge)
1=Exfiltration (Exfiltration Controls 0.07 cfs)
Pond 39P: Subsurface Basin Lot 2
Exfiltration
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 39P: Subsurface Basin Lot 2 - Chamber Wizard Field A
Chamber Model = ADS N-12 15" (ADS N-12ยฎ Pipe) Inside= 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside= 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf Row Length Adjustment= +5.00' x 1.20 sf x 3 rows 18.0" Wide + 10.9" Spacing = 28.9" C-C Row Spacing 2 Chambers/Row x 20.00' Long +5.00' Row Adjustment +1.50' Header x 2 = 48.00' Row Length +8.0" End Stone x 2 = 49.33' Base Length 3 Rows x 18.0" Wide + 10.9" Spacing x 2 + 8.0" Side Stone x 2 = 7.65' Base Width 4.0" Stone Base + 18.0" Chamber Height + 4.0" Stone Cover = 2.17' Field Height 6 Chambers x 24.0 cf +5.00' Row Adjustment x 1.20 sf x 3 Rows + 6.31' Header x 1.20 sf x 2 = 177.2 cf Chamber Storage 6 Chambers x 31.9 cf +5.00' Row Adjustment x 1.60 sf x 3 Rows + 6.31' Header x 1.60 sf x 2 = 235.7 cf Displacement 817.3 cf Field - 235.7 cf Chambers = 581.6 cf Stone x 40.0% Voids = 232.6 cf Stone Storage Chamber Storage + Stone Storage = 409.8 cf = 0.009 af Overall Storage Efficiency = 50.1% Overall System Size = 49.33' x 7.65' x 2.17' 6 Chambers 30.3 cy Field 21.5 cy Stone
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NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025 ons LLC Page 209
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 39P: Subsurface Basin Lot 2
Pond 39P: Subsurface Basin Lot 2
โ˜ Discarded
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 39P: Subsurface Basin Lot 2
Stage-Area-Storage
0 0.000 0.001 0.001 0.002 0.002 0.003 0.003 0.004 0.004 0.005 0.005 0.006 0.006 0.007 0.007 0.008 0.009 0.009 Storage (acre-feet)
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NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 39P: Subsurface Basin Lot 2
Time (hours)Inflow (cfs)Storage (acre-feet)Elevation (feet)Discarded (cfs)
0.000.000.00093.000.00
2.000.000.00093.000.00
4.000.000.00093.000.00
6.000.000.00093.000.00
8.000.010.00093.000.01
10.000.010.00093.000.01
12.000.150.00193.200.07
14.000.010.00093.000.01
16.000.010.00093.000.01
18.000.000.00093.000.00
20.000.000.00093.000.00
22.000.000.00093.000.00
24.000.000.00093.000.00
26.000.000.00093.000.00
28.000.000.00093.000.00
30.000.000.00093.000.00
32.000.000.00093.000.00
34.000.000.00093.000.00
36.000.000.00093.000.00
38.000.000.00093.000.00
40.000.000.00093.000.00
42.000.000.00093.000.00
44.000.000.00093.000.00
46.000.000.00093.000.00
48.000.000.00093.000.00
50.000.000.00093.000.00
52.000.000.00093.000.00
54.000.000.00093.000.00
56.000.000.00093.000.00
58.000.000.00093.000.00
60.000.000.00093.000.00
62.000.000.00093.000.00
64.000.000.00093.000.00
66.000.000.00093.000.00
68.000.000.00093.000.00
70.000.000.00093.000.00
72.000.000.00093.000.00
Page 211
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NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025
YR-C Rainfall=5.38" Printed 10/24/2025 Page 212
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 39P: Subsurface Basin Lot 2
Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
93.000.0094.040.07
93.020.0794.060.07
93.040.0794.080.07
93.060.0794.100.07
93.080.0794.120.07
93.100.0794.140.07
93.120.0794.160.07
93.140.0794.180.07
93.160.0794.200.07
93.180.0794.220.07
93.200.0794.240.07
93.220.0794.260.07
93.240.0794.280.07
93.260.0794.300.07
93.280.0794.320.07
93.300.0794.340.07
93.320.0794.360.07
93.340.0794.380.07
93.360.0794.400.07
93.380.0794.420.07
93.400.0794.440.07
93.420.0794.460.07
93.440.0794.480.07
93.460.0794.500.07
93.480.0794.520.07
93.500.0794.540.07
93.520.0794.560.07
93.540.0794.580.07
93.560.0794.600.07
93.580.0794.620.07
93.600.0794.640.07
93.620.0794.660.07
93.640.0794.680.07
93.660.0794.700.07
93.680.0794.720.07
93.700.0794.740.07
93.720.0794.760.07
93.740.0794.780.07
93.760.0794.800.07
93.780.0794.820.07
93.800.0794.840.07
93.820.0794.860.07
93.840.0794.880.07
93.860.0794.900.07
93.880.0794.920.07
93.900.0794.940.07
93.920.0794.960.07
93.940.0794.980.07
93.960.0795.000.07
93.980.0795.020.07
94.000.0795.040.07
94.020.0795.060.07
Elevation (feet)Discarded (cfs)
95.080.07
95.100.07
95.120.07
95.140.07
95.160.07
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Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LL
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025
Stage-Area-Storage for Pond 39P: Subsurface Basin Lot 2
Elevation (feet)Surface (acres)Storage (acre-feet)
93.000.0090.000
93.050.0090.000
93.100.0090.000
93.150.0090.001
93.200.0090.001
93.250.0090.001
93.300.0090.001
93.350.0090.001
93.400.0090.001
93.450.0090.001
93.500.0090.002
93.550.0090.002
93.600.0090.002
93.650.0090.002
93.700.0090.003
93.750.0090.003
93.800.0090.003
93.850.0090.003
93.900.0090.004
93.950.0090.004
94.000.0090.004
94.050.0090.005
94.100.0090.005
94.150.0090.005
94.200.0090.005
94.250.0090.006
94.300.0090.006
94.350.0090.006
94.400.0090.007
94.450.0090.007
94.500.0090.007
94.550.0090.007
94.600.0090.008
94.650.0090.008
94.700.0090.008
94.750.0090.008
94.800.0090.008
94.850.0090.008
94.900.0090.008
94.950.0090.009
95.000.0090.009
95.050.0090.009
95.100.0090.009
95.150.0090.009
Page 213
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NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025 ons LLC Page 214
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 41P: Subsurface Basin Lot 9
Inflow Area = 1,850 sf, 100.00% Impervious, Inflow Depth = 5.14" for 10 YR-C event Inflow = 0.24 cfs @ 12.09 hrs, Volume= 793 cf Outflow = 0.07 cfs @ 11.85 hrs, Volume= 793 cf, Atten= 71%, Lag= 0.0 min Discarded = 0.07 cfs @ 11.85 hrs, Volume= 793 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 93.66' @ 12.21 hrs Surf.Area= 0.008 ac Storage= 0.002 af Plug-Flow detention time= 5.3 min calculated for 793 cf (100% of inflow) Center-of-Mass det. time= 5.3 min (748.4 - 743.1)
VolumeInvertAvail.StorageStorage Description
#1A93.00'0.005 af7.65"W x 48.33"L x 2.17"H Field A
0.018 af Overall - 0.005 af Embedded = 0.013 af x 40.0% Voids
#2A93.33'0.004 afADS N-12 15" x 6 Inside #1 Inside = 14.8"W x 14.8"H => 1.20 sf x 20.00"L = 24.0 cf Outside = 18.0"W x 18.0"H => 1.60 sf x 20.00"L = 31.9 cf Row Length Adjustment= +4.00' x 1.20 sf x 3 rows 6.31' Header x 1.20 sf x 2 = 15.2 cf Inside
0.009 af Total Available Storage
Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Discarded93.00'8.000 in/hr Exfiltration over Surface area
Discarded OutFlowMax=0.07 cfs @ 11.85 hrs HW=93.02' (Free Discharge)
โ€”1=Exfiltration(Exfiltration Controls 0.07 cfs)
Pond 41P: Subsurface Basin Lot 9
Exfiltration
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Analysis - Proposed Conditions NOAA 24-hr D 10 YR-C Rainfall=5.38" Prepared by Civil Core Consulting Printed 10/24/2025 HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 215
Pond 41P: Subsurface Basin Lot 9 - Chamber Wizard Field A
Chamber Model = ADS N-12 15" (ADS N-12ยฎ Pipe) Inside= 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside= 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf Row Length Adjustment= +4.00' x 1.20 sf x 3 rows 18.0" Wide + 10.9" Spacing = 28.9" C-C Row Spacing 2 Chambers/Row x 20.00' Long +4.00' Row Adjustment +1.50' Header x 2 = 47.00' Row Length +8.0" End Stone x 2 = 48.33' Base Length 3 Rows x 18.0" Wide + 10.9" Spacing x 2 + 8.0" Side Stone x 2 = 7.65' Base Width 4.0" Stone Base + 18.0" Chamber Height + 4.0" Stone Cover = 2.17' Field Height 6 Chambers x 24.0 cf +4.00' Row Adjustment x 1.20 sf x 3 Rows + 6.31' Header x 1.20 sf x 2 = 173.6 cf Chamber Storage 6 Chambers x 31.9 cf +4.00' Row Adjustment x 1.60 sf x 3 Rows + 6.31' Header x 1.60 sf x 2 = 230.9 cf Displacement 800.7 cf Field - 230.9 cf Chambers = 569.8 cf Stone x 40.0% Voids = 227.9 cf Stone Storage Chamber Storage + Stone Storage = 401.5 cf = 0.009 af Overall Storage Efficiency = 50.1% Overall System Size = 48.33' x 7.65' x 2.17' 6 Chambers 29.7 cy Field 21.1 cy Stone
โ—‹โ—‹โ—‹
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NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025 ons LLC Page 216
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 41P: Subsurface Basin Lot 9
Pond 41P: Subsurface Basin Lot 9
โ˜ Discarded
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NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025 ons LLC Page 217
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 41P: Subsurface Basin Lot 9
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NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 41P: Subsurface Basin Lot 9
Time (hours)Inflow (cfs)Storage (acre-feet)Elevation (feet)Discarded (cfs)
0.000.000.00093.000.00
2.000.000.00093.000.00
4.000.000.00093.000.00
6.000.000.00093.000.00
8.000.010.00093.000.01
10.000.010.00093.000.01
12.000.150.00193.210.07
14.000.010.00093.000.01
16.000.010.00093.000.01
18.000.000.00093.000.00
20.000.000.00093.000.00
22.000.000.00093.000.00
24.000.000.00093.000.00
26.000.000.00093.000.00
28.000.000.00093.000.00
30.000.000.00093.000.00
32.000.000.00093.000.00
34.000.000.00093.000.00
36.000.000.00093.000.00
38.000.000.00093.000.00
40.000.000.00093.000.00
42.000.000.00093.000.00
44.000.000.00093.000.00
46.000.000.00093.000.00
48.000.000.00093.000.00
50.000.000.00093.000.00
52.000.000.00093.000.00
54.000.000.00093.000.00
56.000.000.00093.000.00
58.000.000.00093.000.00
60.000.000.00093.000.00
62.000.000.00093.000.00
64.000.000.00093.000.00
66.000.000.00093.000.00
68.000.000.00093.000.00
70.000.000.00093.000.00
72.000.000.00093.000.00
Page 218
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NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 41P: Subsurface Basin Lot 9
Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
93.000.0094.040.07
93.020.0794.060.07
93.040.0794.080.07
93.060.0794.100.07
93.080.0794.120.07
93.100.0794.140.07
93.120.0794.160.07
93.140.0794.180.07
93.160.0794.200.07
93.180.0794.220.07
93.200.0794.240.07
93.220.0794.260.07
93.240.0794.280.07
93.260.0794.300.07
93.280.0794.320.07
93.300.0794.340.07
93.320.0794.360.07
93.340.0794.380.07
93.360.0794.400.07
93.380.0794.420.07
93.400.0794.440.07
93.420.0794.460.07
93.440.0794.480.07
93.460.0794.500.07
93.480.0794.520.07
93.500.0794.540.07
93.520.0794.560.07
93.540.0794.580.07
93.560.0794.600.07
93.580.0794.620.07
93.600.0794.640.07
93.620.0794.660.07
93.640.0794.680.07
93.660.0794.700.07
93.680.0794.720.07
93.700.0794.740.07
93.720.0794.760.07
93.740.0794.780.07
93.760.0794.800.07
93.780.0794.820.07
93.800.0794.840.07
93.820.0794.860.07
93.840.0794.880.07
93.860.0794.900.07
93.880.0794.920.07
93.900.0794.940.07
93.920.0794.960.07
93.940.0794.980.07
93.960.0795.000.07
93.980.0795.020.07
94.000.0795.040.07
94.020.0795.060.07
Elevation (feet)Discarded (cfs)
95.080.07
95.100.07
95.120.07
95.140.07
95.160.07
R-C Rainfall=5.38" Printed 10/24/2025 Page 219
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025
Stage-Area-Storage for Pond 41P: Subsurface Basin Lot 9
Elevation (feet)Surface (acres)Storage (acre-feet)
93.000.0080.000
93.050.0080.000
93.100.0080.000
93.150.0080.001
93.200.0080.001
93.250.0080.001
93.300.0080.001
93.350.0080.001
93.400.0080.001
93.450.0080.001
93.500.0080.002
93.550.0080.002
93.600.0080.002
93.650.0080.002
93.700.0080.003
93.750.0080.003
93.800.0080.003
93.850.0080.003
93.900.0080.004
93.950.0080.004
94.000.0080.004
94.050.0080.004
94.100.0080.005
94.150.0080.005
94.200.0080.005
94.250.0080.006
94.300.0080.006
94.350.0080.006
94.400.0080.006
94.450.0080.007
94.500.0080.007
94.550.0080.007
94.600.0080.007
94.650.0080.008
94.700.0080.008
94.750.0080.008
94.800.0080.008
94.850.0080.008
94.900.0080.008
94.950.0080.008
95.000.0080.009
95.050.0080.009
95.100.0080.009
95.150.0080.009
Page 220
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NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025 ons LLC Page 221
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 43P: Subsurface Basin Lot 10
Inflow Area = 1,850 sf, 100.00% Impervious, Inflow Depth = 5.14" for 10 YR-C event Inflow = 0.24 cfs @ 12.09 hrs, Volume= 793 cf Outflow = 0.08 cfs @ 11.92 hrs, Volume= 793 cf, Atten= 66%, Lag= 0.0 min Discarded = 0.08 cfs @ 11.92 hrs, Volume= 793 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 92.60' @ 12.20 hrs Surf.Area= 0.008 ac Storage= 0.002 af Plug-Flow detention time= 3.4 min calculated for 793 cf (100% of inflow) Center-of-Mass det. time= 3.4 min (746.4 - 743.1)
VolumeInvertAvail.StorageStorage Description
#1A92.00'0.005 af7.65"W x 45.33"L x 2.17"H Field A
0.017 af Overall - 0.005 af Embedded = 0.012 af x 40.0% Voids
#2A92.33'0.004 afADS N-12 15" x 6 Inside #1 Inside = 14.8"W x 14.8"H => 1.20 sf x 20.00"L = 24.0 cf Outside = 18.0"W x 18.0"H => 1.60 sf x 20.00"L = 31.9 cf Row Length Adjustment= +1.00' x 1.20 sf x 3 rows 6.31' Header x 1.20 sf x 2 = 15.2 cf Inside
0.009 af Total Available Storage
Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Discarded92.00'10.000 in/hr Exfiltration over Surface area
Discarded OutFlowMax=0.08 cfs @ 11.92 hrsHW=92.03' (Free Discharge)
โ€”1=Exfiltration (Exfiltration Controls 0.08 cfs)
Pond 43P: Subsurface Basin Lot 10
Exfiltration
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NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025 ons LLC Page 222
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 43P: Subsurface Basin Lot 10 - Chamber Wizard Field A
Chamber Model = ADS N-12 15" (ADS N-12ยฎ Pipe) Inside= 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside= 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf Row Length Adjustment= +1.00' x 1.20 sf x 3 rows 18.0" Wide + 10.9" Spacing = 28.9" C-C Row Spacing 2 Chambers/Row x 20.00' Long +1.00' Row Adjustment +1.50' Header x 2 = 44.00' Row Length +8.0" End Stone x 2 = 45.33' Base Length 3 Rows x 18.0" Wide + 10.9" Spacing x 2 + 8.0" Side Stone x 2 = 7.65' Base Width 4.0" Stone Base + 18.0" Chamber Height + 4.0" Stone Cover = 2.17' Field Height 6 Chambers x 24.0 cf +1.00' Row Adjustment x 1.20 sf x 3 Rows + 6.31' Header x 1.20 sf x 2 = 162.8 cf Chamber Storage 6 Chambers x 31.9 cf +1.00' Row Adjustment x 1.60 sf x 3 Rows + 6.31' Header x 1.60 sf x 2 = 216.5 cf Displacement 751.0 cf Field - 216.5 cf Chambers = 534.5 cf Stone x 40.0% Voids = 213.8 cf Stone Storage Chamber Storage + Stone Storage = 376.6 cf = 0.009 af Overall Storage Efficiency = 50.1% Overall System Size = 45.33' x 7.65' x 2.17' 6 Chambers 27.8 cy Field 19.8 cy Stone
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NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025 ons LLC Page 223
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 43P: Subsurface Basin Lot 10
Pond 43P: Subsurface Basin Lot 10
โ˜ Discarded
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NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025 ons LLC Page 224
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 43P: Subsurface Basin Lot 10
Stage-Area-Storage
Surface Storage
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NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 43P: Subsurface Basin Lot 10
Time (hours)Inflow (cfs)Storage (acre-feet)Elevation (feet)Discarded (cfs)
0.000.000.00092.000.00
2.000.000.00092.000.00
4.000.000.00092.000.00
6.000.000.00092.000.00
8.000.010.00092.000.01
10.000.010.00092.000.01
12.000.150.00192.160.08
14.000.010.00092.000.01
16.000.010.00092.000.01
18.000.000.00092.000.00
20.000.000.00092.000.00
22.000.000.00092.000.00
24.000.000.00092.000.00
26.000.000.00092.000.00
28.000.000.00092.000.00
30.000.000.00092.000.00
32.000.000.00092.000.00
34.000.000.00092.000.00
36.000.000.00092.000.00
38.000.000.00092.000.00
40.000.000.00092.000.00
42.000.000.00092.000.00
44.000.000.00092.000.00
46.000.000.00092.000.00
48.000.000.00092.000.00
50.000.000.00092.000.00
52.000.000.00092.000.00
54.000.000.00092.000.00
56.000.000.00092.000.00
58.000.000.00092.000.00
60.000.000.00092.000.00
62.000.000.00092.000.00
64.000.000.00092.000.00
66.000.000.00092.000.00
68.000.000.00092.000.00
70.000.000.00092.000.00
72.000.000.00092.000.00
Page 225
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0 YR-C Rainfall=5.38" Printed 10/24/2025 Page 226
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 43P: Subsurface Basin Lot 10
Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
92.000.0093.040.08
92.020.0893.060.08
92.040.0893.080.08
92.060.0893.100.08
92.080.0893.120.08
92.100.0893.140.08
92.120.0893.160.08
92.140.0893.180.08
92.160.0893.200.08
92.180.0893.220.08
92.200.0893.240.08
92.220.0893.260.08
92.240.0893.280.08
92.260.0893.300.08
92.280.0893.320.08
92.300.0893.340.08
92.320.0893.360.08
92.340.0893.380.08
92.360.0893.400.08
92.380.0893.420.08
92.400.0893.440.08
92.420.0893.460.08
92.440.0893.480.08
92.460.0893.500.08
92.480.0893.520.08
92.500.0893.540.08
92.520.0893.560.08
92.540.0893.580.08
92.560.0893.600.08
92.580.0893.620.08
92.600.0893.640.08
92.620.0893.660.08
92.640.0893.680.08
92.660.0893.700.08
92.680.0893.720.08
92.700.0893.740.08
92.720.0893.760.08
92.740.0893.780.08
92.760.0893.800.08
92.780.0893.820.08
92.800.0893.840.08
92.820.0893.860.08
92.840.0893.880.08
92.860.0893.900.08
92.880.0893.920.08
92.900.0893.940.08
92.920.0893.960.08
92.940.0893.980.08
92.960.0894.000.08
92.980.0894.020.08
93.000.0894.040.08
93.020.0894.060.08
Elevation (feet)Discarded (cfs)
94.080.08
94.100.08
94.120.08
94.140.08
94.160.08
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Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025
Stage-Area-Storage for Pond 43P: Subsurface Basin Lot 10
Elevation (feet)Surface (acres)Storage (acre-feet)
92.000.0080.000
92.050.0080.000
92.100.0080.000
92.150.0080.000
92.200.0080.001
92.250.0080.001
92.300.0080.001
92.350.0080.001
92.400.0080.001
92.450.0080.001
92.500.0080.002
92.550.0080.002
92.600.0080.002
92.650.0080.002
92.700.0080.002
92.750.0080.003
92.800.0080.003
92.850.0080.003
92.900.0080.003
92.950.0080.004
93.000.0080.004
93.050.0080.004
93.100.0080.004
93.150.0080.005
93.200.0080.005
93.250.0080.005
93.300.0080.005
93.350.0080.006
93.400.0080.006
93.450.0080.006
93.500.0080.006
93.550.0080.007
93.600.0080.007
93.650.0080.007
93.700.0080.007
93.750.0080.007
93.800.0080.007
93.850.0080.008
93.900.0080.008
93.950.0080.008
94.000.0080.008
94.050.0080.008
94.100.0080.008
94.150.0080.009
Page 227
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NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025 ons LLC Page 228
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 46P: Subsurface Basin Lot 3
Inflow Area = 1,850 sf,100.00% Impervious, Inflow Depth = 5.14" for 10 YR-C event Inflow = 0.24 cfs @ 12.09 hrs, Volume= 793 cf Outflow = 0.05 cfs @ 11.77 hrs, Volume= 793 cf, Atten= 81%, Lag= 0.0 min Discarded = 0.05 cfs @ 11.77 hrs, Volume= 793 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 93.69' @ 12.32 hrs Surf.Area= 0.011 ac Storage= 0.003 af Plug-Flow detention time= 14.2 min calculated for 793 cf (100% of inflow) Center-of-Mass det. time= 14.2 min (757.2 - 743.1)
VolumeInvertAvail.StorageStorage Description
#1A93.00'0.007 af7.65"W x 64.33"L x 2.17"H Field A 0.024 af Overall - 0.007 af Embedded = 0.017 af x 40.0% Voids
#2A93.33'0.005 afADS N-12 15" x 9 Inside #1 Inside = 14.8"W x 14.8"H => 1.20 sf x 20.00"L = 24.0 cf Outside = 18.0"W x 18.0"H => 1.60 sf x 20.00"L = 31.9 cf 9 Chambers in 3 Rows 6.31' Header x 1.20 sf x 2 = 15.2 cf Inside
0.012 cfTotal Available Storage
0.012 af Total Available Storage
Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Discarded93.00'4.050 in/hr Exfiltration over Surface area
Discarded OutFlowMax=0.05 cfs @ 11.77 hrsHW=93.02' (Free Discharge)
1=Exfiltration (Exfiltration Controls 0.05 cfs)
Pond 46P: Subsurface Basin Lot 3
Exfiltration
Exfiltration
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NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025 ons LLC Page 229
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 46P: Subsurface Basin Lot 3 - Chamber Wizard Field A
Chamber Model = ADS N-12 15" (ADS N-12ยฎ Pipe) Inside= 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside= 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf 18.0" Wide + 10.9" Spacing = 28.9" C-C Row Spacing 3 Chambers/Row x 20.00' Long +1.50' Header x 2 = 63.00' Row Length +8.0" End Stone x 2 = 64.33' Base Length 3 Rows x 18.0" Wide + 10.9" Spacing x 2 + 8.0" Side Stone x 2 = 7.65' Base Width 4.0" Stone Base + 18.0" Chamber Height + 4.0" Stone Cover = 2.17' Field Height 9 Chambers x 24.0 cf + 6.31' Header x 1.20 sf x 2 = 231.2 cf Chamber Storage 9 Chambers x 31.9 cf + 6.31' Header x 1.60 sf x 2 = 307.5 cf Displacement 1,065.8 cf Field - 307.5 cf Chambers = 758.3 cf Stone x 40.0% Voids = 303.3 cf Stone Storage Chamber Storage + Stone Storage = 534.5 cf = 0.012 af Overall Storage Efficiency = 50.1% Overall System Size = 64.33' x 7.65' x 2.17' 9 Chambers 39.5 cy Field 28.1 cy Stone
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NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025 ons LLC Page 230
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 46P: Subsurface Basin Lot 3
Pond 46P: Subsurface Basin Lot 3
Stage-Discharge
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NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025 ons LLC Page 231
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 46P: Subsurface Basin Lot 3
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NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 46P: Subsurface Basin Lot 3
Time (hours)Inflow (cfs)Storage (acre-feet)Elevation (feet)Discarded (cfs)
0.000.000.00093.000.00
2.000.000.00093.000.00
4.000.000.00093.000.00
6.000.000.00093.000.00
8.000.010.00093.000.01
10.000.010.00093.000.01
12.000.150.00193.260.05
14.000.010.00093.000.01
16.000.010.00093.000.01
18.000.000.00093.000.00
20.000.000.00093.000.00
22.000.000.00093.000.00
24.000.000.00093.000.00
26.000.000.00093.000.00
28.000.000.00093.000.00
30.000.000.00093.000.00
32.000.000.00093.000.00
34.000.000.00093.000.00
36.000.000.00093.000.00
38.000.000.00093.000.00
40.000.000.00093.000.00
42.000.000.00093.000.00
44.000.000.00093.000.00
46.000.000.00093.000.00
48.000.000.00093.000.00
50.000.000.00093.000.00
52.000.000.00093.000.00
54.000.000.00093.000.00
56.000.000.00093.000.00
58.000.000.00093.000.00
60.000.000.00093.000.00
62.000.000.00093.000.00
64.000.000.00093.000.00
66.000.000.00093.000.00
68.000.000.00093.000.00
70.000.000.00093.000.00
72.000.000.00093.000.00
Page 232
Page 854 Download HTML
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025
0 YR-C Rainfall=5.38" Printed 10/24/2025 Page 233
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 46P: Subsurface Basin Lot 3
Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
93.000.0094.040.05
93.020.0594.060.05
93.040.0594.080.05
93.060.0594.100.05
93.080.0594.120.05
93.100.0594.140.05
93.120.0594.160.05
93.140.0594.180.05
93.160.0594.200.05
93.180.0594.220.05
93.200.0594.240.05
93.220.0594.260.05
93.240.0594.280.05
93.260.0594.300.05
93.280.0594.320.05
93.300.0594.340.05
93.320.0594.360.05
93.340.0594.380.05
93.360.0594.400.05
93.380.0594.420.05
93.400.0594.440.05
93.420.0594.460.05
93.440.0594.480.05
93.460.0594.500.05
93.480.0594.520.05
93.500.0594.540.05
93.520.0594.560.05
93.540.0594.580.05
93.560.0594.600.05
93.580.0594.620.05
93.600.0594.640.05
93.620.0594.660.05
93.640.0594.680.05
93.660.0594.700.05
93.680.0594.720.05
93.700.0594.740.05
93.720.0594.760.05
93.740.0594.780.05
93.760.0594.800.05
93.780.0594.820.05
93.800.0594.840.05
93.820.0594.860.05
93.840.0594.880.05
93.860.0594.900.05
93.880.0594.920.05
93.900.0594.940.05
93.920.0594.960.05
93.940.0594.980.05
93.960.0595.000.05
93.980.0595.020.05
94.000.0595.040.05
94.020.0595.060.05
Elevation (feet)Discarded (cfs)
95.080.05
95.100.05
95.120.05
95.140.05
95.160.05
Page 855 Download HTML
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LL
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025
Stage-Area-Storage for Pond 46P: Subsurface Basin Lot 3
Elevation (feet)Surface (acres)Storage (acre-feet)
93.000.0110.000
93.050.0110.000
93.100.0110.000
93.150.0110.001
93.200.0110.001
93.250.0110.001
93.300.0110.001
93.350.0110.002
93.400.0110.002
93.450.0110.002
93.500.0110.002
93.550.0110.002
93.600.0110.003
93.650.0110.003
93.700.0110.003
93.750.0110.004
93.800.0110.004
93.850.0110.004
93.900.0110.005
93.950.0110.005
94.000.0110.006
94.050.0110.006
94.100.0110.006
94.150.0110.007
94.200.0110.007
94.250.0110.007
94.300.0110.008
94.350.0110.008
94.400.0110.008
94.450.0110.009
94.500.0110.009
94.550.0110.009
94.600.0110.010
94.650.0110.010
94.700.0110.010
94.750.0110.010
94.800.0110.011
94.850.0110.011
94.900.0110.011
94.950.0110.011
95.000.0110.012
95.050.0110.012
95.100.0110.012
95.150.0110.012
Page 234
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NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025 ons LLC Page 235
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 50P: Subsurface Basin Lot 4
Inflow Area = 1,850 sf,100.00% Impervious, Inflow Depth = 5.14" for 10 YR-C event Inflow = 0.24 cfs @ 12.09 hrs, Volume= 793 cf Outflow = 0.05 cfs @ 11.77 hrs, Volume= 793 cf, Atten= 81%, Lag= 0.0 min Discarded = 0.05 cfs @ 11.77 hrs, Volume= 793 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 93.69' @ 12.32 hrs Surf.Area= 0.011 ac Storage= 0.003 af Plug-Flow detention time= 14.2 min calculated for 793 cf (100% of inflow) Center-of-Mass det. time= 14.2 min (757.2 - 743.1)
VolumeInvertAvail.StorageStorage Description
#1A93.00'0.007 af7.65"W x 64.33"L x 2.17"H Field A 0.024 af Overall - 0.007 af Embedded = 0.017 af x 40.0% Voids
#2A93.33'0.005 afADS N-12 15" x 9 Inside #1 Inside = 14.8"W x 14.8"H => 1.20 sf x 20.00"L = 24.0 cf Outside = 18.0"W x 18.0"H => 1.60 sf x 20.00"L = 31.9 cf 9 Chambers in 3 Rows 6.31' Header x 1.20 sf x 2 = 15.2 cf Inside
0.012 cfTotal Available Storage
0.012 af Total Available Storage
Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Discarded93.00'4.050 in/hr Exfiltration over Surface area
Discarded OutFlowMax=0.05 cfs @ 11.77 hrsHW=93.02' (Free Discharge)
1=Exfiltration (Exfiltration Controls 0.05 cfs)
Pond 50P: Subsurface Basin Lot 4
Exfiltration
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NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025 ons LLC Page 236
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions Ltd
Pond 50P: Subsurface Basin Lot 4 - Chamber Wizard Field A
Chamber Model = ADS N-12 15" (ADS N-12ยฎ Pipe) Inside= 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside= 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf 18.0" Wide + 10.9" Spacing = 28.9" C-C Row Spacing 3 Chambers/Row x 20.00' Long +1.50' Header x 2 = 63.00' Row Length +8.0" End Stone x 2 = 64.33' Base Length 3 Rows x 18.0" Wide + 10.9" Spacing x 2 + 8.0" Side Stone x 2 = 7.65' Base Width 4.0" Stone Base + 18.0" Chamber Height + 4.0" Stone Cover = 2.17' Field Height 9 Chambers x 24.0 cf + 6.31' Header x 1.20 sf x 2 = 231.2 cf Chamber Storage 9 Chambers x 31.9 cf + 6.31' Header x 1.60 sf x 2 = 307.5 cf Displacement 1,065.8 cf Field - 307.5 cf Chambers = 758.3 cf Stone x 40.0% Voids = 303.3 cf Stone Storage Chamber Storage + Stone Storage = 534.5 cf = 0.012 af Overall Storage Efficiency = 50.1% Overall System Size = 64.33' x 7.65' x 2.17' 9 Chambers 39.5 cy Field 28.1 cy Stone
Page 858 Download HTML
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025 ons LLC Page 237
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 50P: Subsurface Basin Lot 4
Pond 50P: Subsurface Basin Lot 4
Stage-Discharge
Page 859 Download HTML
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025 ons LLC Page 238
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 50P: Subsurface Basin Lot 4
Page 860 Download HTML
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 50P: Subsurface Basin Lot 4
Time (hours)Inflow (cfs)Storage (acre-feet)Elevation (feet)Discarded (cfs)
0.000.000.00093.000.00
2.000.000.00093.000.00
4.000.000.00093.000.00
6.000.000.00093.000.00
8.000.010.00093.000.01
10.000.010.00093.000.01
12.000.150.00193.260.05
14.000.010.00093.000.01
16.000.010.00093.000.01
18.000.000.00093.000.00
20.000.000.00093.000.00
22.000.000.00093.000.00
24.000.000.00093.000.00
26.000.000.00093.000.00
28.000.000.00093.000.00
30.000.000.00093.000.00
32.000.000.00093.000.00
34.000.000.00093.000.00
36.000.000.00093.000.00
38.000.000.00093.000.00
40.000.000.00093.000.00
42.000.000.00093.000.00
44.000.000.00093.000.00
46.000.000.00093.000.00
48.000.000.00093.000.00
50.000.000.00093.000.00
52.000.000.00093.000.00
54.000.000.00093.000.00
56.000.000.00093.000.00
58.000.000.00093.000.00
60.000.000.00093.000.00
62.000.000.00093.000.00
64.000.000.00093.000.00
66.000.000.00093.000.00
68.000.000.00093.000.00
70.000.000.00093.000.00
72.000.000.00093.000.00
Page 239
Page 861 Download HTML
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025 ons LLC Page 240
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 50P: Subsurface Basin Lot 4
Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
93.000.0094.040.05
93.020.0594.060.05
93.040.0594.080.05
93.060.0594.100.05
93.080.0594.120.05
93.100.0594.140.05
93.120.0594.160.05
93.140.0594.180.05
93.160.0594.200.05
93.180.0594.220.05
93.200.0594.240.05
93.220.0594.260.05
93.240.0594.280.05
93.260.0594.300.05
93.280.0594.320.05
93.300.0594.340.05
93.320.0594.360.05
93.340.0594.380.05
93.360.0594.400.05
93.380.0594.420.05
93.400.0594.440.05
93.420.0594.460.05
93.440.0594.480.05
93.460.0594.500.05
93.480.0594.520.05
93.500.0594.540.05
93.520.0594.560.05
93.540.0594.580.05
93.560.0594.600.05
93.580.0594.620.05
93.600.0594.640.05
93.620.0594.660.05
93.640.0594.680.05
93.660.0594.700.05
93.680.0594.720.05
93.700.0594.740.05
93.720.0594.760.05
93.740.0594.780.05
93.760.0594.800.05
93.780.0594.820.05
93.800.0594.840.05
93.820.0594.860.05
93.840.0594.880.05
93.860.0594.900.05
93.880.0594.920.05
93.900.0594.940.05
93.920.0594.960.05
93.940.0594.980.05
93.960.0595.000.05
93.980.0595.020.05
94.000.0595.040.05
94.020.0595.060.05
Elevation (feet)Discarded (cfs)
95.080.05
95.100.05
95.120.05
95.140.05
95.160.05
Page 862 Download HTML
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025
0 YR-C Rainfall=5.38" Printed 10/24/2025 Page 241
Stage-Area-Storage for Pond 50P: Subsurface Basin Lot 4
Elevation (feet)Surface (acres)Storage (acre-feet)
93.000.0110.000
93.050.0110.000
93.100.0110.000
93.150.0110.001
93.200.0110.001
93.250.0110.001
93.300.0110.001
93.350.0110.002
93.400.0110.002
93.450.0110.002
93.500.0110.002
93.550.0110.002
93.600.0110.003
93.650.0110.003
93.700.0110.003
93.750.0110.004
93.800.0110.004
93.850.0110.004
93.900.0110.005
93.950.0110.005
94.000.0110.006
94.050.0110.006
94.100.0110.006
94.150.0110.007
94.200.0110.007
94.250.0110.007
94.300.0110.008
94.350.0110.008
94.400.0110.008
94.450.0110.009
94.500.0110.009
94.550.0110.009
94.600.0110.010
94.650.0110.010
94.700.0110.010
94.750.0110.010
94.800.0110.011
94.850.0110.011
94.900.0110.011
94.950.0110.011
95.000.0110.012
95.050.0110.012
95.100.0110.012
95.150.0110.012
Page 863 Download HTML
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025 ons LLC Page 242
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 52P: Subsurface Basin Lot 6
Inflow Area = 1,850 sf, 100.00% Impervious, Inflow Depth = 5.14" for 10 YR-C event Inflow = 0.24 cfs @ 12.09 hrs, Volume= 793 cf Outflow = 0.07 cfs @ 11.86 hrs, Volume= 793 cf, Atten= 70%, Lag= 0.0 min Discarded = 0.07 cfs @ 11.86 hrs, Volume= 793 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 93.65' @ 12.21 hrs Surf.Area= 0.008 ac Storage= 0.002 af Plug-Flow detention time= 4.8 min calculated for 793 cf (100% of inflow) Center-of-Mass det. time= 4.8 min (747.9 - 743.1)
VolumeInvertAvail.StorageStorage Description
#1A93.00'0.005 af7.65"W x 47.33"L x 2.17"H Field A
0.018 af Overall - 0.005 af Embedded = 0.013 af x 40.0% Voids
#2A93.33'0.004 afADS N-12 15" x 6 Inside #1 Inside = 14.8"W x 14.8"H => 1.20 sf x 20.00"L = 24.0 cf Outside = 18.0"W x 18.0"H => 1.60 sf x 20.00"L = 31.9 cf Row Length Adjustment= +3.00' x 1.20 sf x 3 rows 6.31' Header x 1.20 sf x 2 = 15.2 cf Inside
0.009 af Total Available Storage
Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Discarded93.00'8.450 in/hr Exfiltration over Surface area
Discarded OutFlowMax=0.07 cfs @ 11.86 hrs HW=93.02' (Free Discharge)
1=Exfiltration (Exfiltration Controls 0.07 cfs)
Pond 52P: Subsurface Basin Lot 6
Exfiltration
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NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025 ons LLC Page 243
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 52P: Subsurface Basin Lot 6 - Chamber Wizard Field A
Chamber Model = ADS N-12 15" (ADS N-12ยฎ Pipe) Inside= 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside= 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf Row Length Adjustment= +3.00' x 1.20 sf x 3 rows 18.0" Wide + 10.9" Spacing = 28.9" C-C Row Spacing 2 Chambers/Row x 20.00' Long +3.00' Row Adjustment +1.50' Header x 2 = 46.00' Row Length +8.0" End Stone x 2 = 47.33' Base Length 3 Rows x 18.0" Wide + 10.9" Spacing x 2 + 8.0" Side Stone x 2 = 7.65' Base Width 4.0" Stone Base + 18.0" Chamber Height + 4.0" Stone Cover = 2.17' Field Height 6 Chambers x 24.0 cf +3.00' Row Adjustment x 1.20 sf x 3 Rows + 6.31' Header x 1.20 sf x 2 = 170.0 cf Chamber Storage 6 Chambers x 31.9 cf +3.00' Row Adjustment x 1.60 sf x 3 Rows + 6.31' Header x 1.60 sf x 2 = 226.1 cf Displacement 784.1 cf Field - 226.1 cf Chambers = 558.1 cf Stone x 40.0% Voids = 223.2 cf Stone Storage Chamber Storage + Stone Storage = 393.2 cf = 0.009 af Overall Storage Efficiency = 50.1% Overall System Size = 47.33' x 7.65' x 2.17' 6 Chambers 29.0 cy Field 20.7 cy Stone
Page 865 Download HTML
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025 ons LLC Page 244
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 52P: Subsurface Basin Lot 6
Pond 52P: Subsurface Basin Lot 6
Stage-Discharge
โ˜ Discarded
Page 866 Download HTML
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025 ons LLC Page 245
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 52P: Subsurface Basin Lot 6
Stage-Area-Storage
Page 867 Download HTML
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 52P: Subsurface Basin Lot 6
Time (hours)Inflow (cfs)Storage (acre-feet)Elevation (feet)Discarded (cfs)
0.000.000.00093.000.00
2.000.000.00093.000.00
4.000.000.00093.000.00
6.000.000.00093.000.00
8.000.010.00093.000.01
10.000.010.00093.000.01
12.000.150.00193.200.07
14.000.010.00093.000.01
16.000.010.00093.000.01
18.000.000.00093.000.00
20.000.000.00093.000.00
22.000.000.00093.000.00
24.000.000.00093.000.00
26.000.000.00093.000.00
28.000.000.00093.000.00
30.000.000.00093.000.00
32.000.000.00093.000.00
34.000.000.00093.000.00
36.000.000.00093.000.00
38.000.000.00093.000.00
40.000.000.00093.000.00
42.000.000.00093.000.00
44.000.000.00093.000.00
46.000.000.00093.000.00
48.000.000.00093.000.00
50.000.000.00093.000.00
52.000.000.00093.000.00
54.000.000.00093.000.00
56.000.000.00093.000.00
58.000.000.00093.000.00
60.000.000.00093.000.00
62.000.000.00093.000.00
64.000.000.00093.000.00
66.000.000.00093.000.00
68.000.000.00093.000.00
70.000.000.00093.000.00
72.000.000.00093.000.00
Page 246
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NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 52P: Subsurface Basin Lot 6
Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
93.000.0094.040.07
93.020.0794.060.07
93.040.0794.080.07
93.060.0794.100.07
93.080.0794.120.07
93.100.0794.140.07
93.120.0794.160.07
93.140.0794.180.07
93.160.0794.200.07
93.180.0794.220.07
93.200.0794.240.07
93.220.0794.260.07
93.240.0794.280.07
93.260.0794.300.07
93.280.0794.320.07
93.300.0794.340.07
93.320.0794.360.07
93.340.0794.380.07
93.360.0794.400.07
93.380.0794.420.07
93.400.0794.440.07
93.420.0794.460.07
93.440.0794.480.07
93.460.0794.500.07
93.480.0794.520.07
93.500.0794.540.07
93.520.0794.560.07
93.540.0794.580.07
93.560.0794.600.07
93.580.0794.620.07
93.600.0794.640.07
93.620.0794.660.07
93.640.0794.680.07
93.660.0794.700.07
93.680.0794.720.07
93.700.0794.740.07
93.720.0794.760.07
93.740.0794.780.07
93.760.0794.800.07
93.780.0794.820.07
93.800.0794.840.07
93.820.0794.860.07
93.840.0794.880.07
93.860.0794.900.07
93.880.0794.920.07
93.900.0794.940.07
93.920.0794.960.07
93.940.0794.980.07
93.960.0795.000.07
93.980.0795.020.07
94.000.0795.040.07
94.020.0795.060.07
Elevation (feet)Discarded (cfs)
95.080.07
95.100.07
95.120.07
95.140.07
95.160.07
/R-C Rainfall=5.38" Printed 10/24/2025 Page 247
Page 869 Download HTML
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025
Stage-Area-Storage for Pond 52P: Subsurface Basin Lot 6
Elevation (feet)Surface (acres)Storage (acre-feet)
93.000.0080.000
93.050.0080.000
93.100.0080.000
93.150.0080.000
93.200.0080.001
93.250.0080.001
93.300.0080.001
93.350.0080.001
93.400.0080.001
93.450.0080.001
93.500.0080.002
93.550.0080.002
93.600.0080.002
93.650.0080.002
93.700.0080.002
93.750.0080.003
93.800.0080.003
93.850.0080.003
93.900.0080.003
93.950.0080.004
94.000.0080.004
94.050.0080.004
94.100.0080.005
94.150.0080.005
94.200.0080.005
94.250.0080.005
94.300.0080.006
94.350.0080.006
94.400.0080.006
94.450.0080.006
94.500.0080.007
94.550.0080.007
94.600.0080.007
94.650.0080.007
94.700.0080.008
94.750.0080.008
94.800.0080.008
94.850.0080.008
94.900.0080.008
94.950.0080.008
95.000.0080.008
95.050.0080.009
95.100.0080.009
95.150.0080.009
Page 248
Page 870 Download HTML
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025 ons LLC Page 249
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 56P: Subsurface Basin Lot 7
Inflow Area = 1,850 sf, 100.00% Impervious, Inflow Depth = 5.14" for 10 YR-C event Inflow = 0.24 cfs @ 12.09 hrs, Volume= 793 cf Outflow = 0.08 cfs @ 11.92 hrs, Volume= 793 cf, Atten= 66%, Lag= 0.0 min Discarded = 0.08 cfs @ 11.92 hrs, Volume= 793 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 94.60' @ 12.20 hrs Surf.Area= 0.008 ac Storage= 0.002 af Plug-Flow detention time= 3.4 min calculated for 793 cf (100% of inflow) Center-of-Mass det. time= 3.4 min (746.4 - 743.1)
VolumeInvertAvail.StorageStorage Description
#1A94.00'0.005 af7.65"W x 45.33"L x 2.17"H Field A
0.017 af Overall - 0.005 af Embedded = 0.012 af x 40.0% Voids
#2A94.33'0.004 afADS N-12 15" x 6 Inside #1 Inside = 14.8"W x 14.8"H => 1.20 sf x 20.00"L = 24.0 cf Outside = 18.0"W x 18.0"H => 1.60 sf x 20.00"L = 31.9 cf Row Length Adjustment= +1.00' x 1.20 sf x 3 rows 6.31' Header x 1.20 sf x 2 = 15.2 cf Inside
0.000 afTotal Available Storage
0.009 af Total Available Storage
Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Discarded94.00'10.000 in/hr Exfiltration over Surface area
Discarded OutFlowMax=0.08 cfs @ 11.92 hrsHW=94.03' (Free Discharge)
โ€”1=Exfiltration (Exfiltration Controls 0.08 cfs)
Pond 56P: Subsurface Basin Lot 7
Exfiltration
Exfiltration
Page 871 Download HTML
Pond 56P: Subsurface Basin Lot 7 - Chamber Wizard Field A
Chamber Model = ADS N-12 15" (ADS N-12ยฎ Pipe) Inside= 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside= 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf Row Length Adjustment= +1.00' x 1.20 sf x 3 rows 18.0" Wide + 10.9" Spacing = 28.9" C-C Row Spacing 2 Chambers/Row x 20.00' Long +1.00' Row Adjustment +1.50' Header x 2 = 44.00' Row Length +8.0" End Stone x 2 = 45.33' Base Length 3 Rows x 18.0" Wide + 10.9" Spacing x 2 + 8.0" Side Stone x 2 = 7.65' Base Width 4.0" Stone Base + 18.0" Chamber Height + 4.0" Stone Cover = 2.17' Field Height 6 Chambers x 24.0 cf +1.00' Row Adjustment x 1.20 sf x 3 Rows + 6.31' Header x 1.20 sf x 2 = 162.8 cf Chamber Storage 6 Chambers x 31.9 cf +1.00' Row Adjustment x 1.60 sf x 3 Rows + 6.31' Header x 1.60 sf x 2 = 216.5 cf Displacement 751.0 cf Field - 216.5 cf Chambers = 534.5 cf Stone x 40.0% Voids = 213.8 cf Stone Storage Chamber Storage + Stone Storage = 376.6 cf = 0.009 af Overall Storage Efficiency = 50.1% Overall System Size = 45.33' x 7.65' x 2.17' 6 Chambers 27.8 cy Field 19.8 cy Stone
Page 872 Download HTML
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025 ons LLC Page 251
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 56P: Subsurface Basin Lot 7
Pond 56P: Subsurface Basin Lot 7
โ˜ Discarded
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NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025 ons LLC Page 252
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 56P: Subsurface Basin Lot 7
Stage-Area-Storage
0.000 0.001 0.001 0.002 0.002 0.003 0.003 0.004 0.004 0.005 0.005 0.006 0.006 0.007 0.007 0.008 0.009 Storage (acre-feet)
Surface Storage
Page 874 Download HTML
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 56P: Subsurface Basin Lot 7
Time (hours)Inflow (cfs)Storage (acre-feet)Elevation (feet)Discarded (cfs)
0.000.000.00094.000.00
2.000.000.00094.000.00
4.000.000.00094.000.00
6.000.000.00094.000.00
8.000.010.00094.000.01
10.000.010.00094.000.01
12.000.150.00194.160.08
14.000.010.00094.000.01
16.000.010.00094.000.01
18.000.000.00094.000.00
20.000.000.00094.000.00
22.000.000.00094.000.00
24.000.000.00094.000.00
26.000.000.00094.000.00
28.000.000.00094.000.00
30.000.000.00094.000.00
32.000.000.00094.000.00
34.000.000.00094.000.00
36.000.000.00094.000.00
38.000.000.00094.000.00
40.000.000.00094.000.00
42.000.000.00094.000.00
44.000.000.00094.000.00
46.000.000.00094.000.00
48.000.000.00094.000.00
50.000.000.00094.000.00
52.000.000.00094.000.00
54.000.000.00094.000.00
56.000.000.00094.000.00
58.000.000.00094.000.00
60.000.000.00094.000.00
62.000.000.00094.000.00
64.000.000.00094.000.00
66.000.000.00094.000.00
68.000.000.00094.000.00
70.000.000.00094.000.00
72.000.000.00094.000.00
Page 253
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NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025
0 YR-C Rainfall=5.38" Printed 10/24/2025 Page 254
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 56P: Subsurface Basin Lot 7
Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
94.000.0095.040.08
94.020.0895.060.08
94.040.0895.080.08
94.060.0895.100.08
94.080.0895.120.08
94.100.0895.140.08
94.120.0895.160.08
94.140.0895.180.08
94.160.0895.200.08
94.180.0895.220.08
94.200.0895.240.08
94.220.0895.260.08
94.240.0895.280.08
94.260.0895.300.08
94.280.0895.320.08
94.300.0895.340.08
94.320.0895.360.08
94.340.0895.380.08
94.360.0895.400.08
94.380.0895.420.08
94.400.0895.440.08
94.420.0895.460.08
94.440.0895.480.08
94.460.0895.500.08
94.480.0895.520.08
94.500.0895.540.08
94.520.0895.560.08
94.540.0895.580.08
94.560.0895.600.08
94.580.0895.620.08
94.600.0895.640.08
94.620.0895.660.08
94.640.0895.680.08
94.660.0895.700.08
94.680.0895.720.08
94.700.0895.740.08
94.720.0895.760.08
94.740.0895.780.08
94.760.0895.800.08
94.780.0895.820.08
94.800.0895.840.08
94.820.0895.860.08
94.840.0895.880.08
94.860.0895.900.08
94.880.0895.920.08
94.900.0895.940.08
94.920.0895.960.08
94.940.0895.980.08
94.960.0896.000.08
94.980.0896.020.08
95.000.0896.040.08
95.020.0896.060.08
Elevation (feet)Discarded (cfs)
96.080.08
96.100.08
96.120.08
96.140.08
96.160.08
Page 876 Download HTML
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 10/24/2025 ons LLC Page 255
Stage-Area-Storage for Pond 56P: Subsurface Basin Lot 7
Elevation (feet)Surface (acres)Storage (acre-feet)
94.000.0080.000
94.050.0080.000
94.100.0080.000
94.150.0080.000
94.200.0080.001
94.250.0080.001
94.300.0080.001
94.350.0080.001
94.400.0080.001
94.450.0080.001
94.500.0080.002
94.550.0080.002
94.600.0080.002
94.650.0080.002
94.700.0080.002
94.750.0080.003
94.800.0080.003
94.850.0080.003
94.900.0080.003
94.950.0080.004
95.000.0080.004
95.050.0080.004
95.100.0080.004
95.150.0080.005
95.200.0080.005
95.250.0080.005
95.300.0080.005
95.350.0080.006
95.400.0080.006
95.450.0080.006
95.500.0080.006
95.550.0080.007
95.600.0080.007
95.650.0080.007
95.700.0080.007
95.750.0080.007
95.800.0080.007
95.850.0080.008
95.900.0080.008
95.950.0080.008
96.000.0080.008
96.050.0080.008
96.100.0080.008
96.150.0080.009
Page 255
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Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025 ons LLC Page 256
Time span=0.00-72.00 hrs, dt=0.01 hrs, 7201 points
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious
Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method
Subcatchment 36S: Roof Lot 1Runoff Area=1,850 sf 100.00% Impervious Runoff Depth=6.10" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.28 cfs 941 cf
Subcatchment 37S: Roof Lot 8Runoff Area=1,850 sf 100.00% Impervious Runoff Depth=6.10" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.28 cfs 941 cf
Subcatchment 38S: Roof Lot 2Runoff Area=1,850 sf 100.00% Impervious Runoff Depth=6.10" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.28 cfs 941 cf
Subcatchment 40S: Roof Lot 9Runoff Area=1,850 sf 100.00% Impervious Runoff Depth=6.10" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.28 cfs 941 cf
Subcatchment 42S: Roof Lot 10Runoff Area=1,850 sf 100.00% Impervious Runoff Depth=6.10" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.28 cfs 941 cf
Subcatchment 44S: Roof Lot 3Runoff Area=1,850 sf 100.00% Impervious Runoff Depth=6.10" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.28 cfs 941 cf
Subcatchment 48S: Roof Lot 4Runoff Area=1,850 sf 100.00% Impervious Runoff Depth=6.10" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.28 cfs 941 cf
Subcatchment 51S: Roof Lot 6Runoff Area=1,850 sf 100.00% Impervious Runoff Depth=6.10" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.28 cfs 941 cf
Subcatchment 55S: Roof Lot 7Runoff Area=1,850 sf 100.00% Impervious Runoff Depth=6.10" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.28 cfs 941 cf
Pond 37P: Subsurface Basin Lot 1Peak Elev=91.90' Storage=0.006 af Inflow=0.28 cfs 941 cf Outflow=0.03 cfs 941 cf
Pond 38P: Subsurface Basin Lot 8Peak Elev=94.78' Storage=0.003 af Inflow=0.28 cfs 941 cf Outflow=0.08 cfs 941 cf
Pond 39P: Subsurface Basin Lot 2Peak Elev=93.81' Storage=0.003 af Inflow=0.28 cfs 941 cf Outflow=0.07 cfs 941 cf
Pond 41P: Subsurface Basin Lot 9Peak Elev=93.82' Storage=0.003 af Inflow=0.28 cfs 941 cf Outflow=0.07 cfs 941 cf
Pond 43P: Subsurface Basin Lot 10Peak Elev=92.78' Storage=0.003 af Inflow=0.28 cfs 941 cf Outflow=0.08 cfs 941 cf
Pond 46P: Subsurface Basin Lot 3Peak Elev=93.85' Storage=0.004 af Inflow=0.28 cfs 941 cf Outflow=0.05 cfs 941 cf
Pond 50P: Subsurface Basin Lot 4Peak Elev=93.85' Storage=0.004 af Inflow=0.28 cfs 941 cf Outflow=0.05 cfs 941 cf
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Analysis - Proposed Conditions NOAA 24-hr D 10 YR-F Rainfall=6.34" Prepared by Civil Core Consulting Printed 10/24/2025 HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 257
Pond 52P: Subsurface Basin Lot 6
Pond 56P: Subsurface Basin Lot 7 Peak Elev=93.82' Storage=0.003 af Inflow=0.28 cfs 941 cf Outflow=0.07 cfs 941 cf
Total Runoff Area = 16,650 sf Runoff Volume = 8,466 cf Average Runoff Depth = 6.10" 0.00% Pervious = 0 sf 100.00% Impervious = 16,650 sf
Peak Elev=93.82' Storage=0.003 af Inflow=0.28 cfs 941 cf Outflow=0.07 cfs 941 cf
Peak Elev=94.78' Storage=0.003 af Inflow=0.28 cfs 941 cf Outflow=0.08 cfs 941 cf
Runoff Volume = 8,466 cf Average Runoff Depth = 6.10" 0.00% Pervious = 0 sf 100.00% Impervious = 16,650 sf
Page 879 Download HTML
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025 ons LLC Page 258
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 36S: Roof Lot 1
Runoff = 0.28 cfs @ 12.09 hrs, Volume= 941 cf, Depth= 6.10" Routed to Pond 37P : Subsurface Basin Lot 1
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-F Rainfall=6.34"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
0.4 45 2.00 Direct Entry, Pipe Flow
Subcatchment 36S: Roof Lot 1
Page 880 Download HTML
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025
0 YR-F Rainfall=6.34" Printed 10/24/2025 Page 259
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 36S: Roof Lot 1
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.150.000.040.00
4.000.330.000.170.00
6.000.540.000.360.00
8.000.820.000.620.01
10.001.260.001.040.01
12.003.040.002.810.17
14.005.080.004.850.01
16.005.520.005.280.01
18.005.800.005.560.00
20.006.010.005.770.00
22.006.190.005.950.00
24.006.340.006.100.00
26.006.340.006.100.00
28.006.340.006.100.00
30.006.340.006.100.00
32.006.340.006.100.00
34.006.340.006.100.00
36.006.340.006.100.00
38.006.340.006.100.00
40.006.340.006.100.00
42.006.340.006.100.00
44.006.340.006.100.00
46.006.340.006.100.00
48.006.340.006.100.00
50.006.340.006.100.00
52.006.340.006.100.00
54.006.340.006.100.00
56.006.340.006.100.00
58.006.340.006.100.00
60.006.340.006.100.00
62.006.340.006.100.00
64.006.340.006.100.00
66.006.340.006.100.00
68.006.340.006.100.00
70.006.340.006.100.00
72.006.340.006.100.00
Page 881 Download HTML
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025 ons LLC Page 260
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 37S: Roof Lot 8
Runoff = 0.28 cfs @ 12.09 hrs, Volume= 941 cf, Depth= 6.10" Routed to Pond 38P : Subsurface Basin Lot 8
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-F Rainfall=6.34"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
2.00 Direct Entry, Pipe Flow
Subcatchment 37S: Roof Lot 8
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NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025 ons LLC Page 261
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 37S: Roof Lot 8
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.150.000.040.00
4.000.330.000.170.00
6.000.540.000.360.00
8.000.820.000.620.01
10.001.260.001.040.01
12.003.040.002.810.17
14.005.080.004.850.01
16.005.520.005.280.01
18.005.800.005.560.00
20.006.010.005.770.00
22.006.190.005.950.00
24.006.340.006.100.00
26.006.340.006.100.00
28.006.340.006.100.00
30.006.340.006.100.00
32.006.340.006.100.00
34.006.340.006.100.00
36.006.340.006.100.00
38.006.340.006.100.00
40.006.340.006.100.00
42.006.340.006.100.00
44.006.340.006.100.00
46.006.340.006.100.00
48.006.340.006.100.00
50.006.340.006.100.00
52.006.340.006.100.00
54.006.340.006.100.00
56.006.340.006.100.00
58.006.340.006.100.00
60.006.340.006.100.00
62.006.340.006.100.00
64.006.340.006.100.00
66.006.340.006.100.00
68.006.340.006.100.00
70.006.340.006.100.00
72.006.340.006.100.00
Page 883 Download HTML
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025 ons LLC Page 262
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 38S: Roof Lot 2
Runoff = 0.28 cfs @ 12.09 hrs, Volume= 941 cf, Depth= 6.10" Routed to Pond 39P : Subsurface Basin Lot 2
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-F Rainfall=6.34"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
0.4 45 2.00 Direct Entry, Pipe Flow
Subcatchment 38S: Roof Lot 2
Page 884 Download HTML
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025 ons LLC Page 263
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 38S: Roof Lot 2
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.150.000.040.00
4.000.330.000.170.00
6.000.540.000.360.00
8.000.820.000.620.01
10.001.260.001.040.01
12.003.040.002.810.17
14.005.080.004.850.01
16.005.520.005.280.01
18.005.800.005.560.00
20.006.010.005.770.00
22.006.190.005.950.00
24.006.340.006.100.00
26.006.340.006.100.00
28.006.340.006.100.00
30.006.340.006.100.00
32.006.340.006.100.00
34.006.340.006.100.00
36.006.340.006.100.00
38.006.340.006.100.00
40.006.340.006.100.00
42.006.340.006.100.00
44.006.340.006.100.00
46.006.340.006.100.00
48.006.340.006.100.00
50.006.340.006.100.00
52.006.340.006.100.00
54.006.340.006.100.00
56.006.340.006.100.00
58.006.340.006.100.00
60.006.340.006.100.00
62.006.340.006.100.00
64.006.340.006.100.00
66.006.340.006.100.00
68.006.340.006.100.00
70.006.340.006.100.00
72.006.340.006.100.00
Page 885 Download HTML
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025 Page 264
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 264
Summary for Subcatchment 40S: Roof Lot 9
Runoff = 0.28 cfs @ 12.09 hrs, Volume= 941 cf, Depth= 6.10" Routed to Pond 41P : Subsurface Basin Lot 9
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-F Rainfall=6.34"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
0.4 45 2.00 Direct Entry, Pipe Flow
Subcatchment 40S: Roof Lot 9
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NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025 ons LLC Page 265
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 40S: Roof Lot 9
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.150.000.040.00
4.000.330.000.170.00
6.000.540.000.360.00
8.000.820.000.620.01
10.001.260.001.040.01
12.003.040.002.810.17
14.005.080.004.850.01
16.005.520.005.280.01
18.005.800.005.560.00
20.006.010.005.770.00
22.006.190.005.950.00
24.006.340.006.100.00
26.006.340.006.100.00
28.006.340.006.100.00
30.006.340.006.100.00
32.006.340.006.100.00
34.006.340.006.100.00
36.006.340.006.100.00
38.006.340.006.100.00
40.006.340.006.100.00
42.006.340.006.100.00
44.006.340.006.100.00
46.006.340.006.100.00
48.006.340.006.100.00
50.006.340.006.100.00
52.006.340.006.100.00
54.006.340.006.100.00
56.006.340.006.100.00
58.006.340.006.100.00
60.006.340.006.100.00
62.006.340.006.100.00
64.006.340.006.100.00
66.006.340.006.100.00
68.006.340.006.100.00
70.006.340.006.100.00
72.006.340.006.100.00
Page 887 Download HTML
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025 ons LLC Page 266
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 42S: Roof Lot 10
Runoff = 0.28 cfs @ 12.09 hrs, Volume= 941 cf, Depth= 6.10" Routed to Pond 43P : Subsurface Basin Lot 10
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-F Rainfall=6.34"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
0.4 45 2.00 Direct Entry, Pipe Flow
Subcatchment 42S: Roof Lot 10
Page 888 Download HTML
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025 ons LLC Page 267
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 42S: Roof Lot 10
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.150.000.040.00
4.000.330.000.170.00
6.000.540.000.360.00
8.000.820.000.620.01
10.001.260.001.040.01
12.003.040.002.810.17
14.005.080.004.850.01
16.005.520.005.280.01
18.005.800.005.560.00
20.006.010.005.770.00
22.006.190.005.950.00
24.006.340.006.100.00
26.006.340.006.100.00
28.006.340.006.100.00
30.006.340.006.100.00
32.006.340.006.100.00
34.006.340.006.100.00
36.006.340.006.100.00
38.006.340.006.100.00
40.006.340.006.100.00
42.006.340.006.100.00
44.006.340.006.100.00
46.006.340.006.100.00
48.006.340.006.100.00
50.006.340.006.100.00
52.006.340.006.100.00
54.006.340.006.100.00
56.006.340.006.100.00
58.006.340.006.100.00
60.006.340.006.100.00
62.006.340.006.100.00
64.006.340.006.100.00
66.006.340.006.100.00
68.006.340.006.100.00
70.006.340.006.100.00
72.006.340.006.100.00
Page 889 Download HTML
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025 ons LLC Page 268
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 44S: Roof Lot 3
Runoff = 0.28 cfs @ 12.09 hrs, Volume= 941 cf, Depth= 6.10" Routed to Pond 46P : Subsurface Basin Lot 3
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-F Rainfall=6.34"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
2.00 Direct Entry, Pipe Flow
Subcatchment 44S: Roof Lot 3
Page 890 Download HTML
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025 ons LLC Page 269
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 44S: Roof Lot 3
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.150.000.040.00
4.000.330.000.170.00
6.000.540.000.360.00
8.000.820.000.620.01
10.001.260.001.040.01
12.003.040.002.810.17
14.005.080.004.850.01
16.005.520.005.280.01
18.005.800.005.560.00
20.006.010.005.770.00
22.006.190.005.950.00
24.006.340.006.100.00
26.006.340.006.100.00
28.006.340.006.100.00
30.006.340.006.100.00
32.006.340.006.100.00
34.006.340.006.100.00
36.006.340.006.100.00
38.006.340.006.100.00
40.006.340.006.100.00
42.006.340.006.100.00
44.006.340.006.100.00
46.006.340.006.100.00
48.006.340.006.100.00
50.006.340.006.100.00
52.006.340.006.100.00
54.006.340.006.100.00
56.006.340.006.100.00
58.006.340.006.100.00
60.006.340.006.100.00
62.006.340.006.100.00
64.006.340.006.100.00
66.006.340.006.100.00
68.006.340.006.100.00
70.006.340.006.100.00
72.006.340.006.100.00
Page 891 Download HTML
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 270
Summary for Subcatchment 48S: Roof Lot 4
Runoff = 0.28 cfs @ 12.09 hrs, Volume= 941 cf, Depth= 6.10" Routed to Pond 50P : Subsurface Basin Lot 4
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-F Rainfall=6.34"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
0.4 45 2.00 Direct Entry, Pipe Flow
Subcatchment 48S: Roof Lot 4
Page 892 Download HTML
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 48S: Roof Lot 4
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.150.000.040.00
4.000.330.000.170.00
6.000.540.000.360.00
8.000.820.000.620.01
10.001.260.001.040.01
12.003.040.002.810.17
14.005.080.004.850.01
16.005.520.005.280.01
18.005.800.005.560.00
20.006.010.005.770.00
22.006.190.005.950.00
24.006.340.006.100.00
26.006.340.006.100.00
28.006.340.006.100.00
30.006.340.006.100.00
32.006.340.006.100.00
34.006.340.006.100.00
36.006.340.006.100.00
38.006.340.006.100.00
40.006.340.006.100.00
42.006.340.006.100.00
44.006.340.006.100.00
46.006.340.006.100.00
48.006.340.006.100.00
50.006.340.006.100.00
52.006.340.006.100.00
54.006.340.006.100.00
56.006.340.006.100.00
58.006.340.006.100.00
60.006.340.006.100.00
62.006.340.006.100.00
64.006.340.006.100.00
66.006.340.006.100.00
68.006.340.006.100.00
70.006.340.006.100.00
72.006.340.006.100.00
Page 271
Page 893 Download HTML
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025
0 YR-F Rainfall=6.34" Printed 10/24/2025 Page 272
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 51S: Roof Lot 6
Runoff = 0.28 cfs @ 12.09 hrs, Volume= 941 cf, Depth= 6.10" Routed to Pond 52P : Subsurface Basin Lot 6
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-F Rainfall=6.34"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
0.4 45 2.00 Direct Entry, Pipe Flow
Subcatchment 51S: Roof Lot 6
Page 894 Download HTML
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 51S: Roof Lot 6
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.150.000.040.00
4.000.330.000.170.00
6.000.540.000.360.00
8.000.820.000.620.01
10.001.260.001.040.01
12.003.040.002.810.17
14.005.080.004.850.01
16.005.520.005.280.01
18.005.800.005.560.00
20.006.010.005.770.00
22.006.190.005.950.00
24.006.340.006.100.00
26.006.340.006.100.00
28.006.340.006.100.00
30.006.340.006.100.00
32.006.340.006.100.00
34.006.340.006.100.00
36.006.340.006.100.00
38.006.340.006.100.00
40.006.340.006.100.00
42.006.340.006.100.00
44.006.340.006.100.00
46.006.340.006.100.00
48.006.340.006.100.00
50.006.340.006.100.00
52.006.340.006.100.00
54.006.340.006.100.00
56.006.340.006.100.00
58.006.340.006.100.00
60.006.340.006.100.00
62.006.340.006.100.00
64.006.340.006.100.00
66.006.340.006.100.00
68.006.340.006.100.00
70.006.340.006.100.00
72.006.340.006.100.00
Page 273
Page 895 Download HTML
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025
YR-F Rainfall=6.34" Printed 10/24/2025 Page 274
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 55S: Roof Lot 7
Runoff = 0.28 cfs @ 12.09 hrs, Volume= 941 cf, Depth= 6.10" Routed to Pond 56P : Subsurface Basin Lot 7
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-F Rainfall=6.34"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
0.4 45 2.00 Direct Entry, Pipe Flow
Subcatchment 55S: Roof Lot 7
Page 896 Download HTML
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025
0 YR-F Rainfall=6.34" Printed 10/24/2025 Page 275
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 55S: Roof Lot 7
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.150.000.040.00
4.000.330.000.170.00
6.000.540.000.360.00
8.000.820.000.620.01
10.001.260.001.040.01
12.003.040.002.810.17
14.005.080.004.850.01
16.005.520.005.280.01
18.005.800.005.560.00
20.006.010.005.770.00
22.006.190.005.950.00
24.006.340.006.100.00
26.006.340.006.100.00
28.006.340.006.100.00
30.006.340.006.100.00
32.006.340.006.100.00
34.006.340.006.100.00
36.006.340.006.100.00
38.006.340.006.100.00
40.006.340.006.100.00
42.006.340.006.100.00
44.006.340.006.100.00
46.006.340.006.100.00
48.006.340.006.100.00
50.006.340.006.100.00
52.006.340.006.100.00
54.006.340.006.100.00
56.006.340.006.100.00
58.006.340.006.100.00
60.006.340.006.100.00
62.006.340.006.100.00
64.006.340.006.100.00
66.006.340.006.100.00
68.006.340.006.100.00
70.006.340.006.100.00
72.006.340.006.100.00
Page 897 Download HTML
Analysis - Proposed Conditions NOAA 24-hr D 10 YR-F Rainfall=6.34" Prepared by Civil Core Consulting Printed 10/24/2025 HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 276
Summary for Pond 37P: Subsurface Basin Lot 1
Inflow Area = 1,850 sf,100.00% Impervious, Inflow Depth = 6.10" for 10 YR-F event Inflow = 0.28 cfs @ 12.09 hrs, Volume= 941 cf Outflow = 0.03 cfs @ 11.54 hrs, Volume= 941 cf, Atten= 88%, Lag= 0.0 min Discarded = 0.03 cfs @ 11.54 hrs, Volume= 941 cf
Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 91.90' @ 12.71 hrs Surf.Area= 0.013 ac Storage= 0.006 af
Plug-Flow detention time = 42.5 min calculated for 941 cf (100% of inflow) Center-of-Mass det. time = 42.5 min (782.9 - 740.4)
Volume Invert Avail.Storage Storage Description #1A 91.00' 0.008 af 10.06'W x 57.33'L x 2.17'H Field A #2A 91.33' 0.006 af 0.029 af Overall - 0.008 af Embedded = 0.020 af x 40.0% Voids #2A 91.33' 0.006 af ADS N-12 15" x 12 Inside #1 Inside = 14.8"W x 14.8"H => 1.20 sf x 20.00"L = 24.0 cf Outside = 18.0"W x 18.0"H => 1.60 sf x 20.00"L = 31.9 cf Row Length Adjustment = -7.00' x 1.20 sf x 4 rows 8.72' Header x 1.20 sf x 2 = 20.9 cf Inside 0.014 af Total Available Storage
0.014 af Total Available Storage
Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Discarded91.00'2.450 in/hr Exfiltration over Surface area
Discarded OutFlowMax=0.03 cfs @ 11.54 hrs HW=91.02' (Free Discharge)
1=Exfiltration (Exfiltration Controls 0.03 cfs)
Pond 37P: Subsurface Basin Lot 1
Exfiltration
Page 898 Download HTML
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025 ons LLC Page 277
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 37P: Subsurface Basin Lot 1 - Chamber Wizard Field A
Chamber Model = ADS N-12 15" (ADS N-12ยฎ Pipe) Inside= 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside= 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf Row Length Adjustment= -7.00' x 1.20 sf x 4 rows 18.0" Wide + 10.9" Spacing = 28.9" C-C Row Spacing 3 Chambers/Row x 20.00' Long -7.00' Row Adjustment +1.50' Header x 2 = 56.00' Row Length +8.0" End Stone x 2 = 57.33' Base Length 4 Rows x 18.0" Wide + 10.9" Spacing x 3 + 8.0" Side Stone x 2 = 10.06' Base Width 4.0" Stone Base + 18.0" Chamber Height + 4.0" Stone Cover = 2.17' Field Height 12 Chambers x 24.0 cf -7.00' Row Adjustment x 1.20 sf x 4 Rows + 8.72' Header x 1.20 sf x 2 = 275.3 cf Chamber Storage 12 Chambers x 31.9 cf -7.00' Row Adjustment x 1.60 sf x 4 Rows + 8.72' Header x 1.60 sf x 2 = 366.2 cf Displacement 1,248.8 cf Field - 366.2 cf Chambers = 882.6 cf Stone x 40.0% Voids = 353.0 cf Stone Storage Chamber Storage + Stone Storage = 628.4 cf = 0.014 af Overall Storage Efficiency = 50.3% Overall System Size = 57.33' x 10.06' x 2.17' 12 Chambers 46.3 cy Field 32.7 cy Stone
โ˜โ˜โ˜
Page 899 Download HTML
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025 ons LLC Page 278
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 37P: Subsurface Basin Lot 1
Pond 37P: Subsurface Basin Lot 1
Stage-Discharge
โ˜ Discarded
Page 900 Download HTML
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025 ons LLC Page 279
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 37P: Subsurface Basin Lot 1
Page 901 Download HTML
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025 ons LLC Page 280
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 37P: Subsurface Basin Lot 1
Time (hours)Inflow (cfs)Storage (acre-feet)Elevation (feet)Discarded (cfs)
0.000.000.00091.000.00
2.000.000.00091.000.00
4.000.000.00091.000.00
6.000.000.00091.000.00
8.000.010.00091.000.01
10.000.010.00091.000.01
12.000.170.00291.440.03
14.000.010.00491.730.03
16.000.010.00091.060.03
18.000.000.00091.000.00
20.000.000.00091.000.00
22.000.000.00091.000.00
24.000.000.00091.000.00
26.000.000.00091.000.00
28.000.000.00091.000.00
30.000.000.00091.000.00
32.000.000.00091.000.00
34.000.000.00091.000.00
36.000.000.00091.000.00
38.000.000.00091.000.00
40.000.000.00091.000.00
42.000.000.00091.000.00
44.000.000.00091.000.00
46.000.000.00091.000.00
48.000.000.00091.000.00
50.000.000.00091.000.00
52.000.000.00091.000.00
54.000.000.00091.000.00
56.000.000.00091.000.00
58.000.000.00091.000.00
60.000.000.00091.000.00
62.000.000.00091.000.00
64.000.000.00091.000.00
66.000.000.00091.000.00
68.000.000.00091.000.00
70.000.000.00091.000.00
72.000.000.00091.000.00
Page 902 Download HTML
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025
0 YR-F Rainfall=6.34" Printed 10/24/2025 Page 281
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 37P: Subsurface Basin Lot 1
Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
91.000.0092.040.03
91.020.0392.060.03
91.040.0392.080.03
91.060.0392.100.03
91.080.0392.120.03
91.100.0392.140.03
91.120.0392.160.03
91.140.0392.180.03
91.160.0392.200.03
91.180.0392.220.03
91.200.0392.240.03
91.220.0392.260.03
91.240.0392.280.03
91.260.0392.300.03
91.280.0392.320.03
91.300.0392.340.03
91.320.0392.360.03
91.340.0392.380.03
91.360.0392.400.03
91.380.0392.420.03
91.400.0392.440.03
91.420.0392.460.03
91.440.0392.480.03
91.460.0392.500.03
91.480.0392.520.03
91.500.0392.540.03
91.520.0392.560.03
91.540.0392.580.03
91.560.0392.600.03
91.580.0392.620.03
91.600.0392.640.03
91.620.0392.660.03
91.640.0392.680.03
91.660.0392.700.03
91.680.0392.720.03
91.700.0392.740.03
91.720.0392.760.03
91.740.0392.780.03
91.760.0392.800.03
91.780.0392.820.03
91.800.0392.840.03
91.820.0392.860.03
91.840.0392.880.03
91.860.0392.900.03
91.880.0392.920.03
91.900.0392.940.03
91.920.0392.960.03
91.940.0392.980.03
91.960.0393.000.03
91.980.0393.020.03
92.000.0393.040.03
92.020.0393.060.03
Elevation (feet)Discarded (cfs)
93.080.03
93.100.03
93.120.03
93.140.03
93.160.03
Page 903 Download HTML
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025 ons LLC Page 282
Stage-Area-Storage for Pond 37P: Subsurface Basin Lot 1
Elevation (feet)Surface (acres)Storage (acre-feet)
91.000.0130.000
91.050.0130.000
91.100.0130.001
91.150.0130.001
91.200.0130.001
91.250.0130.001
91.300.0130.002
91.350.0130.002
91.400.0130.002
91.450.0130.002
91.500.0130.002
91.550.0130.003
91.600.0130.003
91.650.0130.004
91.700.0130.004
91.750.0130.004
91.800.0130.005
91.850.0130.005
91.900.0130.006
91.950.0130.006
92.000.0130.006
92.050.0130.007
92.100.0130.007
92.150.0130.008
92.200.0130.008
92.250.0130.009
92.300.0130.009
92.350.0130.010
92.400.0130.010
92.450.0130.010
92.500.0130.011
92.550.0130.011
92.600.0130.012
92.650.0130.012
92.700.0130.012
92.750.0130.012
92.800.0130.013
92.850.0130.013
92.900.0130.013
92.950.0130.013
93.000.0130.014
93.050.0130.014
93.100.0130.014
93.150.0130.014
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NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025 ons LLC Page 283
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 38P: Subsurface Basin Lot 8
Inflow Area = 1,850 sf, 100.00% Impervious, Inflow Depth = 6.10" for 10 YR-F event Inflow = 0.28 cfs @ 12.09 hrs, Volume= 941 cf Outflow = 0.08 cfs @ 11.85 hrs, Volume= 941 cf, Atten=72%, Lag=0.0 min Discarded = 0.08 cfs @ 11.85 hrs, Volume= 941 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 94.78' @ 12.21 hrs Surf.Area= 0.008 ac Storage= 0.003 af Plug-Flow detention time= 5.3 min calculated for 941 cf (100% of inflow) Center-of-Mass det. time= 5.3 min (745.7 - 740.4)
VolumeInvertAvail.StorageStorage Description
#1A94.00'0.005 af7.65"W x 45.33"L x 2.17"H Field A
0.017 af Overall - 0.005 af Embedded = 0.012 af x 40.0% Voids
#2A94.33'0.004 afADS N-12 15" x 6 Inside #1 Inside = 14.8"W x 14.8"H => 1.20 sf x 20.00"L = 24.0 cf Outside = 18.0"W x 18.0"H => 1.60 sf x 20.00"L = 31.9 cf Row Length Adjustment= +1.00' x 1.20 sf x 3 rows 6.31' Header x 1.20 sf x 2 = 15.2 cf Inside
0.000 afTotal Available Storage
0.009 af Total Available Storage
Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Discarded94.00'10.000 in/hr Exfiltration over Surface area
Discarded OutFlowMax=0.08 cfs @ 11.85 hrsHW=94.03' (Free Discharge)
1=Exfiltration (Exfiltration Controls 0.08 cfs)
Pond 38P: Subsurface Basin Lot 8
Exfiltration
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 38P: Subsurface Basin Lot 8 - Chamber Wizard Field A
Chamber Model = ADS N-12 15" (ADS N-12ยฎ Pipe) Inside= 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside= 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf Row Length Adjustment= +1.00' x 1.20 sf x 3 rows 18.0" Wide + 10.9" Spacing = 28.9" C-C Row Spacing 2 Chambers/Row x 20.00' Long +1.00' Row Adjustment +1.50' Header x 2 = 44.00' Row Length +8.0" End Stone x 2 = 45.33' Base Length 3 Rows x 18.0" Wide + 10.9" Spacing x 2 + 8.0" Side Stone x 2 = 7.65' Base Width 4.0" Stone Base + 18.0" Chamber Height + 4.0" Stone Cover = 2.17' Field Height 6 Chambers x 24.0 cf +1.00' Row Adjustment x 1.20 sf x 3 Rows + 6.31' Header x 1.20 sf x 2 = 162.8 cf Chamber Storage 6 Chambers x 31.9 cf +1.00' Row Adjustment x 1.60 sf x 3 Rows + 6.31' Header x 1.60 sf x 2 = 216.5 cf Displacement 751.0 cf Field - 216.5 cf Chambers = 534.5 cf Stone x 40.0% Voids = 213.8 cf Stone Storage Chamber Storage + Stone Storage = 376.6 cf = 0.009 af Overall Storage Efficiency = 50.1% Overall System Size = 45.33' x 7.65' x 2.17' 6 Chambers 27.8 cy Field 19.8 cy Stone
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NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025 ons LLC Page 285
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 38P: Subsurface Basin Lot 8
Pond 38P: Subsurface Basin Lot 8
โ˜ Discarded
Page 907 Download HTML
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 38P: Subsurface Basin Lot 8
Stage-Area-Storage
0.000 0.001 0.001 0.002 0.002 0.003 0.003 0.004 0.004 0.005 0.005 0.006 0.006 0.007 0.007 0.008 0.009 Storage (acre-feet)
Surface Storage
Page 908 Download HTML
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025 ons LLC Page 287
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 38P: Subsurface Basin Lot 8
Time (hours)Inflow (cfs)Storage (acre-feet)Elevation (feet)Discarded (cfs)
0.000.000.00094.000.00
2.000.000.00094.000.00
4.000.000.00094.000.00
6.000.000.00094.000.00
8.000.010.00094.000.01
10.000.010.00094.000.01
12.000.170.00194.260.08
14.000.010.00094.000.01
16.000.010.00094.000.01
18.000.000.00094.000.00
20.000.000.00094.000.00
22.000.000.00094.000.00
24.000.000.00094.000.00
26.000.000.00094.000.00
28.000.000.00094.000.00
30.000.000.00094.000.00
32.000.000.00094.000.00
34.000.000.00094.000.00
36.000.000.00094.000.00
38.000.000.00094.000.00
40.000.000.00094.000.00
42.000.000.00094.000.00
44.000.000.00094.000.00
46.000.000.00094.000.00
48.000.000.00094.000.00
50.000.000.00094.000.00
52.000.000.00094.000.00
54.000.000.00094.000.00
56.000.000.00094.000.00
58.000.000.00094.000.00
60.000.000.00094.000.00
62.000.000.00094.000.00
64.000.000.00094.000.00
66.000.000.00094.000.00
68.000.000.00094.000.00
70.000.000.00094.000.00
72.000.000.00094.000.00
Page 909 Download HTML
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025 ons LLC Page 288
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 38P: Subsurface Basin Lot 8
Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
94.000.0095.040.08
94.020.0895.060.08
94.040.0895.080.08
94.060.0895.100.08
94.080.0895.120.08
94.100.0895.140.08
94.120.0895.160.08
94.140.0895.180.08
94.160.0895.200.08
94.180.0895.220.08
94.200.0895.240.08
94.220.0895.260.08
94.240.0895.280.08
94.260.0895.300.08
94.280.0895.320.08
94.300.0895.340.08
94.320.0895.360.08
94.340.0895.380.08
94.360.0895.400.08
94.380.0895.420.08
94.400.0895.440.08
94.420.0895.460.08
94.440.0895.480.08
94.460.0895.500.08
94.480.0895.520.08
94.500.0895.540.08
94.520.0895.560.08
94.540.0895.580.08
94.560.0895.600.08
94.580.0895.620.08
94.600.0895.640.08
94.620.0895.660.08
94.640.0895.680.08
94.660.0895.700.08
94.680.0895.720.08
94.700.0895.740.08
94.720.0895.760.08
94.740.0895.780.08
94.760.0895.800.08
94.780.0895.820.08
94.800.0895.840.08
94.820.0895.860.08
94.840.0895.880.08
94.860.0895.900.08
94.880.0895.920.08
94.900.0895.940.08
94.920.0895.960.08
94.940.0895.980.08
94.960.0896.000.08
94.980.0896.020.08
95.000.0896.040.08
95.020.0896.060.08
Elevation (feet)Discarded (cfs)
96.080.08
96.100.08
96.120.08
96.140.08
96.160.08
Page 910 Download HTML
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025 ons LLC Page 289
Stage-Area-Storage for Pond 38P: Subsurface Basin Lot 8
Elevation (feet)Surface (acres)Storage (acre-feet)
94.000.0080.000
94.050.0080.000
94.100.0080.000
94.150.0080.000
94.200.0080.001
94.250.0080.001
94.300.0080.001
94.350.0080.001
94.400.0080.001
94.450.0080.001
94.500.0080.002
94.550.0080.002
94.600.0080.002
94.650.0080.002
94.700.0080.002
94.750.0080.003
94.800.0080.003
94.850.0080.003
94.900.0080.003
94.950.0080.004
95.000.0080.004
95.050.0080.004
95.100.0080.004
95.150.0080.005
95.200.0080.005
95.250.0080.005
95.300.0080.005
95.350.0080.006
95.400.0080.006
95.450.0080.006
95.500.0080.006
95.550.0080.007
95.600.0080.007
95.650.0080.007
95.700.0080.007
95.750.0080.007
95.800.0080.007
95.850.0080.008
95.900.0080.008
95.950.0080.008
96.000.0080.008
96.050.0080.008
96.100.0080.008
96.150.0080.009
Page 911 Download HTML
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 290
Summary for Pond 39P: Subsurface Basin Lot 2
Inflow Area = 1,850 sf, 100.00% Impervious, Inflow Depth = 6.10" for 10 YR-F event Inflow = 0.28 cfs @ 12.09 hrs, Volume= 941 cf Outflow = 0.07 cfs @ 11.83 hrs, Volume= 941 cf, Atten=76%, Lag=0.0 min Discarded = 0.07 cfs @ 11.83 hrs, Volume= 941 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 93.81' @ 12.30 hrs Surf.Area= 0.009 ac Storage= 0.003 af Plug-Flow detention time= 7.9 min calculated for 941 cf (100% of inflow) Center-of-Mass det. time= 7.9 min (748.3 - 740.4)
VolumeInvertAvail.StorageStorage Description
#1A93.00'0.005 af7.65"W x 49.33"L x 2.17"H Field A
0.019 af Overall - 0.005 af Embedded = 0.013 af x 40.0% Voids
#2A93.33'0.004 afADS N-12 15" x 6 Inside #1 Inside = 14.8"W x 14.8"H => 1.20 sf x 20.00"L = 24.0 cf Outside = 18.0"W x 18.0"H => 1.60 sf x 20.00"L = 31.9 cf Row Length Adjustment= +5.00' x 1.20 sf x 3 rows 6.31' Header x 1.20 sf x 2 = 15.2 cf Inside
0.009 af Total Available Storage
Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Discarded93.00'7.850 in/hr Exfiltration over Surface area
Discarded OutFlowMax=0.07 cfs @ 11.83 hrs HW=93.03' (Free Discharge)
โ€”1=Exfiltration (Exfiltration Controls 0.07 cfs)
Pond 39P: Subsurface Basin Lot 2
Exfiltration
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 39P: Subsurface Basin Lot 2 - Chamber Wizard Field A
Chamber Model = ADS N-12 15" (ADS N-12ยฎ Pipe) Inside= 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside= 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf Row Length Adjustment= +5.00' x 1.20 sf x 3 rows 18.0" Wide + 10.9" Spacing = 28.9" C-C Row Spacing 2 Chambers/Row x 20.00' Long +5.00' Row Adjustment +1.50' Header x 2 = 48.00' Row Length +8.0" End Stone x 2 = 49.33' Base Length 3 Rows x 18.0" Wide + 10.9" Spacing x 2 + 8.0" Side Stone x 2 = 7.65' Base Width 4.0" Stone Base + 18.0" Chamber Height + 4.0" Stone Cover = 2.17' Field Height 6 Chambers x 24.0 cf +5.00' Row Adjustment x 1.20 sf x 3 Rows + 6.31' Header x 1.20 sf x 2 = 177.2 cf Chamber Storage 6 Chambers x 31.9 cf +5.00' Row Adjustment x 1.60 sf x 3 Rows + 6.31' Header x 1.60 sf x 2 = 235.7 cf Displacement 817.3 cf Field - 235.7 cf Chambers = 581.6 cf Stone x 40.0% Voids = 232.6 cf Stone Storage Chamber Storage + Stone Storage = 409.8 cf = 0.009 af Overall Storage Efficiency = 50.1% Overall System Size = 49.33' x 7.65' x 2.17' 6 Chambers 30.3 cy Field 21.5 cy Stone
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NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025 ons LLC Page 292
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 39P: Subsurface Basin Lot 2
Pond 39P: Subsurface Basin Lot 2
โ˜ Discarded
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NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025 ons LLC Page 293
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 39P: Subsurface Basin Lot 2
Stage-Area-Storage
0 0.000 0.001 0.001 0.002 0.002 0.003 0.003 0.004 0.004 0.005 0.005 0.006 0.006 0.007 0.007 0.008 0.009 0.009 Storage (acre-feet)
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 39P: Subsurface Basin Lot 2
Time (hours)Inflow (cfs)Storage (acre-feet)Elevation (feet)Discarded (cfs)
0.000.000.00093.000.00
2.000.000.00093.000.00
4.000.000.00093.000.00
6.000.000.00093.000.00
8.000.010.00093.000.01
10.000.010.00093.000.01
12.000.170.00193.300.07
14.000.010.00093.000.01
16.000.010.00093.000.01
18.000.000.00093.000.00
20.000.000.00093.000.00
22.000.000.00093.000.00
24.000.000.00093.000.00
26.000.000.00093.000.00
28.000.000.00093.000.00
30.000.000.00093.000.00
32.000.000.00093.000.00
34.000.000.00093.000.00
36.000.000.00093.000.00
38.000.000.00093.000.00
40.000.000.00093.000.00
42.000.000.00093.000.00
44.000.000.00093.000.00
46.000.000.00093.000.00
48.000.000.00093.000.00
50.000.000.00093.000.00
52.000.000.00093.000.00
54.000.000.00093.000.00
56.000.000.00093.000.00
58.000.000.00093.000.00
60.000.000.00093.000.00
62.000.000.00093.000.00
64.000.000.00093.000.00
66.000.000.00093.000.00
68.000.000.00093.000.00
70.000.000.00093.000.00
72.000.000.00093.000.00
Page 916 Download HTML
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025 ons LLC Page 295
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 39P: Subsurface Basin Lot 2
Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
93.000.0094.040.07
93.020.0794.060.07
93.040.0794.080.07
93.060.0794.100.07
93.080.0794.120.07
93.100.0794.140.07
93.120.0794.160.07
93.140.0794.180.07
93.160.0794.200.07
93.180.0794.220.07
93.200.0794.240.07
93.220.0794.260.07
93.240.0794.280.07
93.260.0794.300.07
93.280.0794.320.07
93.300.0794.340.07
93.320.0794.360.07
93.340.0794.380.07
93.360.0794.400.07
93.380.0794.420.07
93.400.0794.440.07
93.420.0794.460.07
93.440.0794.480.07
93.460.0794.500.07
93.480.0794.520.07
93.500.0794.540.07
93.520.0794.560.07
93.540.0794.580.07
93.560.0794.600.07
93.580.0794.620.07
93.600.0794.640.07
93.620.0794.660.07
93.640.0794.680.07
93.660.0794.700.07
93.680.0794.720.07
93.700.0794.740.07
93.720.0794.760.07
93.740.0794.780.07
93.760.0794.800.07
93.780.0794.820.07
93.800.0794.840.07
93.820.0794.860.07
93.840.0794.880.07
93.860.0794.900.07
93.880.0794.920.07
93.900.0794.940.07
93.920.0794.960.07
93.940.0794.980.07
93.960.0795.000.07
93.980.0795.020.07
94.000.0795.040.07
94.020.0795.060.07
Elevation (feet)Discarded (cfs)
95.080.07
95.100.07
95.120.07
95.140.07
95.160.07
Page 917 Download HTML
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LL
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025 ons LLC Page 296
Stage-Area-Storage for Pond 39P: Subsurface Basin Lot 2
Elevation (feet)Surface (acres)Storage (acre-feet)
93.000.0090.000
93.050.0090.000
93.100.0090.000
93.150.0090.001
93.200.0090.001
93.250.0090.001
93.300.0090.001
93.350.0090.001
93.400.0090.001
93.450.0090.001
93.500.0090.002
93.550.0090.002
93.600.0090.002
93.650.0090.002
93.700.0090.003
93.750.0090.003
93.800.0090.003
93.850.0090.003
93.900.0090.004
93.950.0090.004
94.000.0090.004
94.050.0090.005
94.100.0090.005
94.150.0090.005
94.200.0090.005
94.250.0090.006
94.300.0090.006
94.350.0090.006
94.400.0090.007
94.450.0090.007
94.500.0090.007
94.550.0090.007
94.600.0090.008
94.650.0090.008
94.700.0090.008
94.750.0090.008
94.800.0090.008
94.850.0090.008
94.900.0090.008
94.950.0090.009
95.000.0090.009
95.050.0090.009
95.100.0090.009
95.150.0090.009
Page 918 Download HTML
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
infall=6.34" 10/24/2025 Page 297
Summary for Pond 41P: Subsurface Basin Lot 9
Inflow Area = 1,850 sf, 100.00% Impervious, Inflow Depth = 6.10" for 10 YR-F event Inflow = 0.28 cfs @ 12.09 hrs, Volume= 941 cf Outflow = 0.07 cfs @ 11.83 hrs, Volume= 941 cf, Atten=76%, Lag=0.0 min Discarded = 0.07 cfs @ 11.83 hrs, Volume= 941 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 93.82' @ 12.30 hrs Surf.Area= 0.008 ac Storage= 0.003 af Plug-Flow detention time= 8.0 min calculated for 941 cf (100% of inflow) Center-of-Mass det. time= 8.0 min (748.4 - 740.4)
VolumeInvertAvail.StorageStorage Description
#1A93.00'0.005 af7.65"W x 48.33"L x 2.17"H Field A
0.018 af Overall - 0.005 af Embedded = 0.013 af x 40.0% Voids
#2A93.33'0.004 afADS N-12 15" x 6 Inside #1 Inside = 14.8"W x 14.8"H => 1.20 sf x 20.00"L = 24.0 cf Outside = 18.0"W x 18.0"H => 1.60 sf x 20.00"L = 31.9 cf Row Length Adjustment= +4.00' x 1.20 sf x 3 rows 6.31' Header x 1.20 sf x 2 = 15.2 cf Inside
0.000 afTotal Available Storage
0.009 af Total Available Storage
Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Discarded93.00'8.000 in/hr Exfiltration over Surface area
Discarded OutFlowMax=0.07 cfs @ 11.83 hrsHW=93.03' (Free Discharge)
1=Exfiltration (Exfiltration Controls 0.07 cfs)
Pond 41P: Subsurface Basin Lot 9
Exfiltration
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Analysis - Proposed Conditions NOAA 24-hr D 10 YR-F Rainfall=6.34" Prepared by Civil Core Consulting Printed 10/24/2025 HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 298
Pond 41P: Subsurface Basin Lot 9 - Chamber Wizard Field A
Chamber Model = ADS N-12 15" (ADS N-12ยฎ Pipe) Inside= 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside= 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf Row Length Adjustment= +4.00' x 1.20 sf x 3 rows 18.0" Wide + 10.9" Spacing = 28.9" C-C Row Spacing 2 Chambers/Row x 20.00' Long +4.00' Row Adjustment +1.50' Header x 2 = 47.00' Row Length +8.0" End Stone x 2 = 48.33' Base Length 3 Rows x 18.0" Wide + 10.9" Spacing x 2 + 8.0" Side Stone x 2 = 7.65' Base Width 4.0" Stone Base + 18.0" Chamber Height + 4.0" Stone Cover = 2.17' Field Height 6 Chambers x 24.0 cf +4.00' Row Adjustment x 1.20 sf x 3 Rows + 6.31' Header x 1.20 sf x 2 = 173.6 cf Chamber Storage 6 Chambers x 31.9 cf +4.00' Row Adjustment x 1.60 sf x 3 Rows + 6.31' Header x 1.60 sf x 2 = 230.9 cf Displacement 800.7 cf Field - 230.9 cf Chambers = 569.8 cf Stone x 40.0% Voids = 227.9 cf Stone Storage Chamber Storage + Stone Storage = 401.5 cf = 0.009 af Overall Storage Efficiency = 50.1% Overall System Size = 48.33' x 7.65' x 2.17' 6 Chambers 29.7 cy Field 21.1 cy Stone
โ—‹โ—‹โ—‹
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NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025 ons LLC Page 299
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 41P: Subsurface Basin Lot 9
Pond 41P: Subsurface Basin Lot 9
โ˜ Discarded
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NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025 ons LLC Page 300
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 41P: Subsurface Basin Lot 9
Page 922 Download HTML
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 41P: Subsurface Basin Lot 9
Time (hours)Inflow (cfs)Storage (acre-feet)Elevation (feet)Discarded (cfs)
0.000.000.00093.000.00
2.000.000.00093.000.00
4.000.000.00093.000.00
6.000.000.00093.000.00
8.000.010.00093.000.01
10.000.010.00093.000.01
12.000.170.00193.310.07
14.000.010.00093.000.01
16.000.010.00093.000.01
18.000.000.00093.000.00
20.000.000.00093.000.00
22.000.000.00093.000.00
24.000.000.00093.000.00
26.000.000.00093.000.00
28.000.000.00093.000.00
30.000.000.00093.000.00
32.000.000.00093.000.00
34.000.000.00093.000.00
36.000.000.00093.000.00
38.000.000.00093.000.00
40.000.000.00093.000.00
42.000.000.00093.000.00
44.000.000.00093.000.00
46.000.000.00093.000.00
48.000.000.00093.000.00
50.000.000.00093.000.00
52.000.000.00093.000.00
54.000.000.00093.000.00
56.000.000.00093.000.00
58.000.000.00093.000.00
60.000.000.00093.000.00
62.000.000.00093.000.00
64.000.000.00093.000.00
66.000.000.00093.000.00
68.000.000.00093.000.00
70.000.000.00093.000.00
72.000.000.00093.000.00
Page 923 Download HTML
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025 ons LLC Page 302
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 41P: Subsurface Basin Lot 9
Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
93.000.0094.040.07
93.020.0794.060.07
93.040.0794.080.07
93.060.0794.100.07
93.080.0794.120.07
93.100.0794.140.07
93.120.0794.160.07
93.140.0794.180.07
93.160.0794.200.07
93.180.0794.220.07
93.200.0794.240.07
93.220.0794.260.07
93.240.0794.280.07
93.260.0794.300.07
93.280.0794.320.07
93.300.0794.340.07
93.320.0794.360.07
93.340.0794.380.07
93.360.0794.400.07
93.380.0794.420.07
93.400.0794.440.07
93.420.0794.460.07
93.440.0794.480.07
93.460.0794.500.07
93.480.0794.520.07
93.500.0794.540.07
93.520.0794.560.07
93.540.0794.580.07
93.560.0794.600.07
93.580.0794.620.07
93.600.0794.640.07
93.620.0794.660.07
93.640.0794.680.07
93.660.0794.700.07
93.680.0794.720.07
93.700.0794.740.07
93.720.0794.760.07
93.740.0794.780.07
93.760.0794.800.07
93.780.0794.820.07
93.800.0794.840.07
93.820.0794.860.07
93.840.0794.880.07
93.860.0794.900.07
93.880.0794.920.07
93.900.0794.940.07
93.920.0794.960.07
93.940.0794.980.07
93.960.0795.000.07
93.980.0795.020.07
94.000.0795.040.07
94.020.0795.060.07
Elevation (feet)Discarded (cfs)
95.080.07
95.100.07
95.120.07
95.140.07
95.160.07
Page 924 Download HTML
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025 ons LLC Page 303
Stage-Area-Storage for Pond 41P: Subsurface Basin Lot 9
Elevation (feet)Surface (acres)Storage (acre-feet)
93.000.0080.000
93.050.0080.000
93.100.0080.000
93.150.0080.001
93.200.0080.001
93.250.0080.001
93.300.0080.001
93.350.0080.001
93.400.0080.001
93.450.0080.001
93.500.0080.002
93.550.0080.002
93.600.0080.002
93.650.0080.002
93.700.0080.003
93.750.0080.003
93.800.0080.003
93.850.0080.003
93.900.0080.004
93.950.0080.004
94.000.0080.004
94.050.0080.004
94.100.0080.005
94.150.0080.005
94.200.0080.005
94.250.0080.006
94.300.0080.006
94.350.0080.006
94.400.0080.006
94.450.0080.007
94.500.0080.007
94.550.0080.007
94.600.0080.007
94.650.0080.008
94.700.0080.008
94.750.0080.008
94.800.0080.008
94.850.0080.008
94.900.0080.008
94.950.0080.008
95.000.0080.009
95.050.0080.009
95.100.0080.009
95.150.0080.009
Page 925 Download HTML
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 304
Summary for Pond 43P: Subsurface Basin Lot 10
Inflow Area = 1,850 sf,100.00% Impervious, Inflow Depth = 6.10" for 10 YR-F event Inflow = 0.28 cfs @ 12.09 hrs, Volume= 941 cf Outflow = 0.08 cfs @ 11.85 hrs, Volume= 941 cf, Atten=72%, Lag=0.0 min Discarded = 0.08 cfs @ 11.85 hrs, Volume= 941 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 92.78' @ 12.21 hrs Surf.Area= 0.008 ac Storage= 0.003 af Plug-Flow detention time= 5.3 min calculated for 941 cf (100% of inflow) Center-of-Mass det. time= 5.3 min (745.7 - 740.4)
VolumeInvertAvail.StorageStorage Description
#1A92.00'0.005 af7.65"W x 45.33"L x 2.17"H Field A
0.017 af Overall - 0.005 af Embedded = 0.012 af x 40.0% Voids
#2A92.33'0.004 afADS N-12 15" x 6 Inside #1 Inside = 14.8"W x 14.8"H => 1.20 sf x 20.00"L = 24.0 cf Outside = 18.0"W x 18.0"H => 1.60 sf x 20.00"L = 31.9 cf Row Length Adjustment= +1.00' x 1.20 sf x 3 rows 6.31' Header x 1.20 sf x 2 = 15.2 cf Inside
0.009 af Total Available Storage
Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Discarded92.00'10.000 in/hr Exfiltration over Surface area
Discarded OutFlowMax=0.08 cfs @ 11.85 hrsHW=92.03' (Free Discharge)
1=Exfiltration (Exfiltration Controls 0.08 cfs)
Pond 43P: Subsurface Basin Lot 10
Exfiltration
Page 926 Download HTML
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025 ons LLC Page 305
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 43P: Subsurface Basin Lot 10 - Chamber Wizard Field A
Chamber Model = ADS N-12 15" (ADS N-12ยฎ Pipe) Inside= 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside= 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf Row Length Adjustment= +1.00' x 1.20 sf x 3 rows 18.0" Wide + 10.9" Spacing = 28.9" C-C Row Spacing 2 Chambers/Row x 20.00' Long +1.00' Row Adjustment +1.50' Header x 2 = 44.00' Row Length +8.0" End Stone x 2 = 45.33' Base Length 3 Rows x 18.0" Wide + 10.9" Spacing x 2 + 8.0" Side Stone x 2 = 7.65' Base Width 4.0" Stone Base + 18.0" Chamber Height + 4.0" Stone Cover = 2.17' Field Height 6 Chambers x 24.0 cf +1.00' Row Adjustment x 1.20 sf x 3 Rows + 6.31' Header x 1.20 sf x 2 = 162.8 cf Chamber Storage 6 Chambers x 31.9 cf +1.00' Row Adjustment x 1.60 sf x 3 Rows + 6.31' Header x 1.60 sf x 2 = 216.5 cf Displacement 751.0 cf Field - 216.5 cf Chambers = 534.5 cf Stone x 40.0% Voids = 213.8 cf Stone Storage Chamber Storage + Stone Storage = 376.6 cf = 0.009 af Overall Storage Efficiency = 50.1% Overall System Size = 45.33' x 7.65' x 2.17' 6 Chambers 27.8 cy Field 19.8 cy Stone
Page 927 Download HTML
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025 ons LLC Page 306
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 43P: Subsurface Basin Lot 10
Pond 43P: Subsurface Basin Lot 10
โ˜ Discarded
Page 928 Download HTML
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025 ons LLC Page 307
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 43P: Subsurface Basin Lot 10
Stage-Area-Storage
Surface Storage
Page 929 Download HTML
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 43P: Subsurface Basin Lot 10
Time (hours)Inflow (cfs)Storage (acre-feet)Elevation (feet)Discarded (cfs)
0.000.000.00092.000.00
2.000.000.00092.000.00
4.000.000.00092.000.00
6.000.000.00092.000.00
8.000.010.00092.000.01
10.000.010.00092.000.01
12.000.170.00192.260.08
14.000.010.00092.000.01
16.000.010.00092.000.01
18.000.000.00092.000.00
20.000.000.00092.000.00
22.000.000.00092.000.00
24.000.000.00092.000.00
26.000.000.00092.000.00
28.000.000.00092.000.00
30.000.000.00092.000.00
32.000.000.00092.000.00
34.000.000.00092.000.00
36.000.000.00092.000.00
38.000.000.00092.000.00
40.000.000.00092.000.00
42.000.000.00092.000.00
44.000.000.00092.000.00
46.000.000.00092.000.00
48.000.000.00092.000.00
50.000.000.00092.000.00
52.000.000.00092.000.00
54.000.000.00092.000.00
56.000.000.00092.000.00
58.000.000.00092.000.00
60.000.000.00092.000.00
62.000.000.00092.000.00
64.000.000.00092.000.00
66.000.000.00092.000.00
68.000.000.00092.000.00
70.000.000.00092.000.00
72.000.000.00092.000.00
Page 308
Page 930 Download HTML
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025
10 YR-F Rainfall=6.34" Printed 10/24/2025 Page 309
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 43P: Subsurface Basin Lot 10
Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
92.000.0093.040.08
92.020.0893.060.08
92.040.0893.080.08
92.060.0893.100.08
92.080.0893.120.08
92.100.0893.140.08
92.120.0893.160.08
92.140.0893.180.08
92.160.0893.200.08
92.180.0893.220.08
92.200.0893.240.08
92.220.0893.260.08
92.240.0893.280.08
92.260.0893.300.08
92.280.0893.320.08
92.300.0893.340.08
92.320.0893.360.08
92.340.0893.380.08
92.360.0893.400.08
92.380.0893.420.08
92.400.0893.440.08
92.420.0893.460.08
92.440.0893.480.08
92.460.0893.500.08
92.480.0893.520.08
92.500.0893.540.08
92.520.0893.560.08
92.540.0893.580.08
92.560.0893.600.08
92.580.0893.620.08
92.600.0893.640.08
92.620.0893.660.08
92.640.0893.680.08
92.660.0893.700.08
92.680.0893.720.08
92.700.0893.740.08
92.720.0893.760.08
92.740.0893.780.08
92.760.0893.800.08
92.780.0893.820.08
92.800.0893.840.08
92.820.0893.860.08
92.840.0893.880.08
92.860.0893.900.08
92.880.0893.920.08
92.900.0893.940.08
92.920.0893.960.08
92.940.0893.980.08
92.960.0894.000.08
92.980.0894.020.08
93.000.0894.040.08
93.020.0894.060.08
Elevation (feet)Discarded (cfs)
94.080.08
94.100.08
94.120.08
94.140.08
94.160.08
Page 931 Download HTML
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025 Page 310
Stage-Area-Storage for Pond 43P: Subsurface Basin Lot 10
Elevation (feet)Surface (acres)Storage (acre-feet)
92.000.0080.000
92.050.0080.000
92.100.0080.000
92.150.0080.000
92.200.0080.001
92.250.0080.001
92.300.0080.001
92.350.0080.001
92.400.0080.001
92.450.0080.001
92.500.0080.002
92.550.0080.002
92.600.0080.002
92.650.0080.002
92.700.0080.002
92.750.0080.003
92.800.0080.003
92.850.0080.003
92.900.0080.003
92.950.0080.004
93.000.0080.004
93.050.0080.004
93.100.0080.004
93.150.0080.005
93.200.0080.005
93.250.0080.005
93.300.0080.005
93.350.0080.006
93.400.0080.006
93.450.0080.006
93.500.0080.006
93.550.0080.007
93.600.0080.007
93.650.0080.007
93.700.0080.007
93.750.0080.007
93.800.0080.007
93.850.0080.008
93.900.0080.008
93.950.0080.008
94.000.0080.008
94.050.0080.008
94.100.0080.008
94.150.0080.009
Page 310
Page 932 Download HTML
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
infall=6.34" 10/24/2025 Page 311
VolumeInvertAvail.StorageStorage Description
#1A93.00'0.007 af7.65"W x 64.33"L x 2.17"H Field A 0.024 af Overall - 0.007 af Embedded = 0.017 af x 40.0% Voids
#2A93.33'0.005 afADS N-12 15" x 9 Inside #1 Inside= 14.8"W x 14.8"H => 1.20 sf x 20.00"L = 24.0 cf Outside= 18.0"W x 18.0"H => 1.60 sf x 20.00"L = 31.9 cf 9 Chambers in 3 Rows 6.31' Header x 1.20 sf x 2 = 15.2 cf Inside
0.012 afTotal Available Storage
Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Discarded93.00'4.050 in/hr Exfiltration over Surface area Phase-In= 0.01'
Discarded OutFlowMax=0.05 cfs @ 11.70 hrs HW=93.02' (Free Discharge)
1=Exfiltration (Exfiltration Controls 0.05 cfs)
Pond 46P: Subsurface Basin Lot 3
Exfiltration
Page 933 Download HTML
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025 ons LLC Page 312
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 46P: Subsurface Basin Lot 3 - Chamber Wizard Field A
Chamber Model = ADS N-12 15" (ADS N-12ยฎ Pipe) Inside= 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside= 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf 18.0" Wide + 10.9" Spacing = 28.9" C-C Row Spacing 3 Chambers/Row x 20.00' Long +1.50' Header x 2 = 63.00' Row Length +8.0" End Stone x 2 = 64.33' Base Length 3 Rows x 18.0" Wide + 10.9" Spacing x 2 + 8.0" Side Stone x 2 = 7.65' Base Width 4.0" Stone Base + 18.0" Chamber Height + 4.0" Stone Cover = 2.17' Field Height 9 Chambers x 24.0 cf + 6.31' Header x 1.20 sf x 2 = 231.2 cf Chamber Storage 9 Chambers x 31.9 cf + 6.31' Header x 1.60 sf x 2 = 307.5 cf Displacement 1,065.8 cf Field - 307.5 cf Chambers = 758.3 cf Stone x 40.0% Voids = 303.3 cf Stone Storage Chamber Storage + Stone Storage = 534.5 cf = 0.012 af Overall Storage Efficiency = 50.1% Overall System Size = 64.33' x 7.65' x 2.17' 9 Chambers 39.5 cy Field 28.1 cy Stone
Page 934 Download HTML
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025 ons LLC Page 313
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 46P: Subsurface Basin Lot 3
Pond 46P: Subsurface Basin Lot 3
Stage-Discharge
Page 935 Download HTML
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025 ons LLC Page 314
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 314
Pond 46P: Subsurface Basin Lot 3
Page 936 Download HTML
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 46P: Subsurface Basin Lot 3
Time (hours)Inflow (cfs)Storage (acre-feet)Elevation (feet)Discarded (cfs)
0.000.000.00093.000.00
2.000.000.00093.000.00
4.000.000.00093.000.00
6.000.000.00093.000.00
8.000.010.00093.000.01
10.000.010.00093.000.01
12.000.170.00293.370.05
14.000.010.00193.300.05
16.000.010.00093.000.01
18.000.000.00093.000.00
20.000.000.00093.000.00
22.000.000.00093.000.00
24.000.000.00093.000.00
26.000.000.00093.000.00
28.000.000.00093.000.00
30.000.000.00093.000.00
32.000.000.00093.000.00
34.000.000.00093.000.00
36.000.000.00093.000.00
38.000.000.00093.000.00
40.000.000.00093.000.00
42.000.000.00093.000.00
44.000.000.00093.000.00
46.000.000.00093.000.00
48.000.000.00093.000.00
50.000.000.00093.000.00
52.000.000.00093.000.00
54.000.000.00093.000.00
56.000.000.00093.000.00
58.000.000.00093.000.00
60.000.000.00093.000.00
62.000.000.00093.000.00
64.000.000.00093.000.00
66.000.000.00093.000.00
68.000.000.00093.000.00
70.000.000.00093.000.00
72.000.000.00093.000.00
Page 315
Page 937 Download HTML
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025
0 YR-F Rainfall=6.34" Printed 10/24/2025 Page 316
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 46P: Subsurface Basin Lot 3
Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
93.000.0094.040.05
93.020.0594.060.05
93.040.0594.080.05
93.060.0594.100.05
93.080.0594.120.05
93.100.0594.140.05
93.120.0594.160.05
93.140.0594.180.05
93.160.0594.200.05
93.180.0594.220.05
93.200.0594.240.05
93.220.0594.260.05
93.240.0594.280.05
93.260.0594.300.05
93.280.0594.320.05
93.300.0594.340.05
93.320.0594.360.05
93.340.0594.380.05
93.360.0594.400.05
93.380.0594.420.05
93.400.0594.440.05
93.420.0594.460.05
93.440.0594.480.05
93.460.0594.500.05
93.480.0594.520.05
93.500.0594.540.05
93.520.0594.560.05
93.540.0594.580.05
93.560.0594.600.05
93.580.0594.620.05
93.600.0594.640.05
93.620.0594.660.05
93.640.0594.680.05
93.660.0594.700.05
93.680.0594.720.05
93.700.0594.740.05
93.720.0594.760.05
93.740.0594.780.05
93.760.0594.800.05
93.780.0594.820.05
93.800.0594.840.05
93.820.0594.860.05
93.840.0594.880.05
93.860.0594.900.05
93.880.0594.920.05
93.900.0594.940.05
93.920.0594.960.05
93.940.0594.980.05
93.960.0595.000.05
93.980.0595.020.05
94.000.0595.040.05
94.020.0595.060.05
Elevation (feet)Discarded (cfs)
95.080.05
95.100.05
95.120.05
95.140.05
95.160.05
Page 938 Download HTML
Analysis - Proposed Conditions NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025
Stage-Area-Storage for Pond 46P: Subsurface Basin Lot 3
Elevation (feet)Surface (acres)Storage (acre-feet)
93.000.0110.000
93.050.0110.000
93.100.0110.000
93.150.0110.001
93.200.0110.001
93.250.0110.001
93.300.0110.001
93.350.0110.002
93.400.0110.002
93.450.0110.002
93.500.0110.002
93.550.0110.002
93.600.0110.003
93.650.0110.003
93.700.0110.003
93.750.0110.004
93.800.0110.004
93.850.0110.004
93.900.0110.005
93.950.0110.005
94.000.0110.006
94.050.0110.006
94.100.0110.006
94.150.0110.007
94.200.0110.007
94.250.0110.007
94.300.0110.008
94.350.0110.008
94.400.0110.008
94.450.0110.009
94.500.0110.009
94.550.0110.009
94.600.0110.010
94.650.0110.010
94.700.0110.010
94.750.0110.010
94.800.0110.011
94.850.0110.011
94.900.0110.011
94.950.0110.011
95.000.0110.012
95.050.0110.012
95.100.0110.012
95.150.0110.012
Page 317
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NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025 ons LLC Page 318
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
VolumeInvertAvail.StorageStorage Description
#1A93.00'0.007 af7.65"W x 64.33"L x 2.17"H Field A 0.024 af Overall - 0.007 af Embedded = 0.017 af x 40.0% Voids
#2A93.33'0.005 afADS N-12 15" x 9 Inside #1 Inside = 14.8"W x 14.8"H => 1.20 sf x 20.00"L = 24.0 cf Outside = 18.0"W x 18.0"H => 1.60 sf x 20.00"L = 31.9 cf 9 Chambers in 3 Rows 6.31" Header x 1.20 sf x 2 = 15.2 cf Inside
0.012 afTotal Available Storage
Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Discarded93.00'4.050 in/hr Exfiltration over Surface area Phase-In= 0.01'
Discarded OutFlowMax=0.05 cfs @11.70 hrsHW=93.02' (Free Discharge)
1=Exfiltration (Exfiltration Controls 0.05 cfs)
Pond 50P: Subsurface Basin Lot 4
Exfiltration
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 50P: Subsurface Basin Lot 4 - Chamber Wizard Field A
Chamber Model = ADS N-12 15" (ADS N-12ยฎ Pipe) Inside= 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside= 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf 18.0" Wide + 10.9" Spacing = 28.9" C-C Row Spacing 3 Chambers/Row x 20.00' Long +1.50' Header x 2 = 63.00' Row Length +8.0" End Stone x 2 = 64.33' Base Length 3 Rows x 18.0" Wide + 10.9" Spacing x 2 + 8.0" Side Stone x 2 = 7.65' Base Width 4.0" Stone Base + 18.0" Chamber Height + 4.0" Stone Cover = 2.17' Field Height 9 Chambers x 24.0 cf + 6.31' Header x 1.20 sf x 2 = 231.2 cf Chamber Storage 9 Chambers x 31.9 cf + 6.31' Header x 1.60 sf x 2 = 307.5 cf Displacement 1,065.8 cf Field - 307.5 cf Chambers = 758.3 cf Stone x 40.0% Voids = 303.3 cf Stone Storage Chamber Storage + Stone Storage = 534.5 cf = 0.012 af Overall Storage Efficiency = 50.1% Overall System Size = 64.33' x 7.65' x 2.17' 9 Chambers 39.5 cy Field 28.1 cy Stone
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NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025 ons LLC Page 320
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 50P: Subsurface Basin Lot 4
Pond 50P: Subsurface Basin Lot 4
Stage-Discharge
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NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025 ons LLC Page 321
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 50P: Subsurface Basin Lot 4
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NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 50P: Subsurface Basin Lot 4
Time (hours)Inflow (cfs)Storage (acre-feet)Elevation (feet)Discarded (cfs)
0.000.000.00093.000.00
2.000.000.00093.000.00
4.000.000.00093.000.00
6.000.000.00093.000.00
8.000.010.00093.000.01
10.000.010.00093.000.01
12.000.170.00293.370.05
14.000.010.00193.300.05
16.000.010.00093.000.01
18.000.000.00093.000.00
20.000.000.00093.000.00
22.000.000.00093.000.00
24.000.000.00093.000.00
26.000.000.00093.000.00
28.000.000.00093.000.00
30.000.000.00093.000.00
32.000.000.00093.000.00
34.000.000.00093.000.00
36.000.000.00093.000.00
38.000.000.00093.000.00
40.000.000.00093.000.00
42.000.000.00093.000.00
44.000.000.00093.000.00
46.000.000.00093.000.00
48.000.000.00093.000.00
50.000.000.00093.000.00
52.000.000.00093.000.00
54.000.000.00093.000.00
56.000.000.00093.000.00
58.000.000.00093.000.00
60.000.000.00093.000.00
62.000.000.00093.000.00
64.000.000.00093.000.00
66.000.000.00093.000.00
68.000.000.00093.000.00
70.000.000.00093.000.00
72.000.000.00093.000.00
Page 322
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NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025
0 YR-F Rainfall=6.34" Printed 10/24/2025 Page 323
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 50P: Subsurface Basin Lot 4
Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
93.000.0094.040.05
93.020.0594.060.05
93.040.0594.080.05
93.060.0594.100.05
93.080.0594.120.05
93.100.0594.140.05
93.120.0594.160.05
93.140.0594.180.05
93.160.0594.200.05
93.180.0594.220.05
93.200.0594.240.05
93.220.0594.260.05
93.240.0594.280.05
93.260.0594.300.05
93.280.0594.320.05
93.300.0594.340.05
93.320.0594.360.05
93.340.0594.380.05
93.360.0594.400.05
93.380.0594.420.05
93.400.0594.440.05
93.420.0594.460.05
93.440.0594.480.05
93.460.0594.500.05
93.480.0594.520.05
93.500.0594.540.05
93.520.0594.560.05
93.540.0594.580.05
93.560.0594.600.05
93.580.0594.620.05
93.600.0594.640.05
93.620.0594.660.05
93.640.0594.680.05
93.660.0594.700.05
93.680.0594.720.05
93.700.0594.740.05
93.720.0594.760.05
93.740.0594.780.05
93.760.0594.800.05
93.780.0594.820.05
93.800.0594.840.05
93.820.0594.860.05
93.840.0594.880.05
93.860.0594.900.05
93.880.0594.920.05
93.900.0594.940.05
93.920.0594.960.05
93.940.0594.980.05
93.960.0595.000.05
93.980.0595.020.05
94.000.0595.040.05
94.020.0595.060.05
Elevation (feet)Discarded (cfs)
95.080.05
95.100.05
95.120.05
95.140.05
95.160.05
Page 945 Download HTML
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025 ons LLC Page 324
Stage-Area-Storage for Pond 50P: Subsurface Basin Lot 4
Elevation (feet)Surface (acres)Storage (acre-feet)
93.000.0110.000
93.050.0110.000
93.100.0110.000
93.150.0110.001
93.200.0110.001
93.250.0110.001
93.300.0110.001
93.350.0110.002
93.400.0110.002
93.450.0110.002
93.500.0110.002
93.550.0110.002
93.600.0110.003
93.650.0110.003
93.700.0110.003
93.750.0110.004
93.800.0110.004
93.850.0110.004
93.900.0110.005
93.950.0110.005
94.000.0110.006
94.050.0110.006
94.100.0110.006
94.150.0110.007
94.200.0110.007
94.250.0110.007
94.300.0110.008
94.350.0110.008
94.400.0110.008
94.450.0110.009
94.500.0110.009
94.550.0110.009
94.600.0110.010
94.650.0110.010
94.700.0110.010
94.750.0110.010
94.800.0110.011
94.850.0110.011
94.900.0110.011
94.950.0110.011
95.000.0110.012
95.050.0110.012
95.100.0110.012
95.150.0110.012
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NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025 ons LLC Page 325
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 52P: Subsurface Basin Lot 6
Inflow Area = 1,850 sf, 100.00% Impervious, Inflow Depth = 6.10" for 10 YR-F event Inflow = 0.28 cfs @ 12.09 hrs, Volume= 941 cf Outflow = 0.07 cfs @ 11.83 hrs, Volume= 941 cf, Atten= 75%, Lag= 0.0 min Discarded = 0.07 cfs @ 11.83 hrs, Volume= 941 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 93.82' @ 12.24 hrs Surf.Area= 0.008 ac Storage= 0.003 af Plug-Flow detention time= 7.3 min calculated for 941 cf (100% of inflow) Center-of-Mass det. time= 7.3 min (747.7 - 740.4)
VolumeInvertAvail.StorageStorage Description
#1A93.00'0.005 af7.65"W x 47.33"L x 2.17"H Field A
0.018 af Overall - 0.005 af Embedded = 0.013 af x 40.0% Voids
#2A93.33'0.004 afADS N-12 15" x 6 Inside #1 Inside = 14.8"W x 14.8"H => 1.20 sf x 20.00"L = 24.0 cf Outside = 18.0"W x 18.0"H => 1.60 sf x 20.00"L = 31.9 cf Row Length Adjustment= +3.00' x 1.20 sf x 3 rows 6.31' Header x 1.20 sf x 2 = 15.2 cf Inside
0.009 af Total Available Storage
Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Discarded93.00'8.450 in/hr Exfiltration over Surface area
Discarded OutFlowMax=0.07 cfs @ 11.83 hrs HW=93.02' (Free Discharge)
โ€”1=Exfiltration (Exfiltration Controls 0.07 cfs)
Pond 52P: Subsurface Basin Lot 6
Exfiltration
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Pond 52P: Subsurface Basin Lot 6 - Chamber Wizard Field A
Chamber Model = ADS N-12 15" (ADS N-12ยฎ Pipe) Inside= 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside= 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf Row Length Adjustment= +3.00' x 1.20 sf x 3 rows 18.0" Wide + 10.9" Spacing = 28.9" C-C Row Spacing 2 Chambers/Row x 20.00' Long +3.00' Row Adjustment +1.50' Header x 2 = 46.00' Row Length +8.0" End Stone x 2 = 47.33' Base Length 3 Rows x 18.0" Wide + 10.9" Spacing x 2 + 8.0" Side Stone x 2 = 7.65' Base Width 4.0" Stone Base + 18.0" Chamber Height + 4.0" Stone Cover = 2.17' Field Height 6 Chambers x 24.0 cf +3.00' Row Adjustment x 1.20 sf x 3 Rows + 6.31' Header x 1.20 sf x 2 = 170.0 cf Chamber Storage 6 Chambers x 31.9 cf +3.00' Row Adjustment x 1.60 sf x 3 Rows + 6.31' Header x 1.60 sf x 2 = 226.1 cf Displacement 784.1 cf Field - 226.1 cf Chambers = 558.1 cf Stone x 40.0% Voids = 223.2 cf Stone Storage Chamber Storage + Stone Storage = 393.2 cf = 0.009 af Overall Storage Efficiency = 50.1% Overall System Size = 47.33' x 7.65' x 2.17' 6 Chambers 29.0 cy Field 20.7 cy Stone
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Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 52P: Subsurface Basin Lot 6
Pond 52P: Subsurface Basin Lot 6
โ˜ Discarded
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 52P: Subsurface Basin Lot 6
Stage-Area-Storage
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 52P: Subsurface Basin Lot 6
Time (hours)Inflow (cfs)Storage (acre-feet)Elevation (feet)Discarded (cfs)
0.000.000.00093.000.00
2.000.000.00093.000.00
4.000.000.00093.000.00
6.000.000.00093.000.00
8.000.010.00093.000.01
10.000.010.00093.000.01
12.000.170.00193.300.07
14.000.010.00093.000.01
16.000.010.00093.000.01
18.000.000.00093.000.00
20.000.000.00093.000.00
22.000.000.00093.000.00
24.000.000.00093.000.00
26.000.000.00093.000.00
28.000.000.00093.000.00
30.000.000.00093.000.00
32.000.000.00093.000.00
34.000.000.00093.000.00
36.000.000.00093.000.00
38.000.000.00093.000.00
40.000.000.00093.000.00
42.000.000.00093.000.00
44.000.000.00093.000.00
46.000.000.00093.000.00
48.000.000.00093.000.00
50.000.000.00093.000.00
52.000.000.00093.000.00
54.000.000.00093.000.00
56.000.000.00093.000.00
58.000.000.00093.000.00
60.000.000.00093.000.00
62.000.000.00093.000.00
64.000.000.00093.000.00
66.000.000.00093.000.00
68.000.000.00093.000.00
70.000.000.00093.000.00
72.000.000.00093.000.00
Page 951 Download HTML
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025 ons LLC Page 330
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 52P: Subsurface Basin Lot 6
Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
93.000.0094.040.07
93.020.0794.060.07
93.040.0794.080.07
93.060.0794.100.07
93.080.0794.120.07
93.100.0794.140.07
93.120.0794.160.07
93.140.0794.180.07
93.160.0794.200.07
93.180.0794.220.07
93.200.0794.240.07
93.220.0794.260.07
93.240.0794.280.07
93.260.0794.300.07
93.280.0794.320.07
93.300.0794.340.07
93.320.0794.360.07
93.340.0794.380.07
93.360.0794.400.07
93.380.0794.420.07
93.400.0794.440.07
93.420.0794.460.07
93.440.0794.480.07
93.460.0794.500.07
93.480.0794.520.07
93.500.0794.540.07
93.520.0794.560.07
93.540.0794.580.07
93.560.0794.600.07
93.580.0794.620.07
93.600.0794.640.07
93.620.0794.660.07
93.640.0794.680.07
93.660.0794.700.07
93.680.0794.720.07
93.700.0794.740.07
93.720.0794.760.07
93.740.0794.780.07
93.760.0794.800.07
93.780.0794.820.07
93.800.0794.840.07
93.820.0794.860.07
93.840.0794.880.07
93.860.0794.900.07
93.880.0794.920.07
93.900.0794.940.07
93.920.0794.960.07
93.940.0794.980.07
93.960.0795.000.07
93.980.0795.020.07
94.000.0795.040.07
94.020.0795.060.07
Elevation (feet)Discarded (cfs)
95.080.07
95.100.07
95.120.07
95.140.07
95.160.07
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Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025 ons LLC Page 331
Stage-Area-Storage for Pond 52P: Subsurface Basin Lot 6
Elevation (feet)Surface (acres)Storage (acre-feet)
93.000.0080.000
93.050.0080.000
93.100.0080.000
93.150.0080.000
93.200.0080.001
93.250.0080.001
93.300.0080.001
93.350.0080.001
93.400.0080.001
93.450.0080.001
93.500.0080.002
93.550.0080.002
93.600.0080.002
93.650.0080.002
93.700.0080.002
93.750.0080.003
93.800.0080.003
93.850.0080.003
93.900.0080.003
93.950.0080.004
94.000.0080.004
94.050.0080.004
94.100.0080.005
94.150.0080.005
94.200.0080.005
94.250.0080.005
94.300.0080.006
94.350.0080.006
94.400.0080.006
94.450.0080.006
94.500.0080.007
94.550.0080.007
94.600.0080.007
94.650.0080.007
94.700.0080.008
94.750.0080.008
94.800.0080.008
94.850.0080.008
94.900.0080.008
94.950.0080.008
95.000.0080.008
95.050.0080.009
95.100.0080.009
95.150.0080.009
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NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025 ons LLC Page 332
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 56P: Subsurface Basin Lot 7
Inflow Area = 1,850 sf, 100.00% Impervious, Inflow Depth = 6.10" for 10 YR-F event Inflow = 0.28 cfs @ 12.09 hrs, Volume= 941 cf Outflow = 0.08 cfs @ 11.85 hrs, Volume= 941 cf, Atten=72%, Lag=0.0 min Discarded = 0.08 cfs @ 11.85 hrs, Volume= 941 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 94.78' @ 12.21 hrs Surf.Area= 0.008 ac Storage= 0.003 af Plug-Flow detention time= 5.3 min calculated for 941 cf (100% of inflow) Center-of-Mass det. time= 5.3 min (745.7 - 740.4)
VolumeInvertAvail.StorageStorage Description
#1A94.00'0.005 af7.65"W x 45.33"L x 2.17"H Field A
0.017 af Overall - 0.005 af Embedded = 0.012 af x 40.0% Voids
#2A94.33'0.004 afADS N-12 15" x 6 Inside #1 Inside = 14.8"W x 14.8"H => 1.20 sf x 20.00"L = 24.0 cf Outside = 18.0"W x 18.0"H => 1.60 sf x 20.00"L = 31.9 cf Row Length Adjustment= +1.00' x 1.20 sf x 3 rows 6.31' Header x 1.20 sf x 2 = 15.2 cf Inside
0.000 afTotal Available Storage
0.009 af Total Available Storage
Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Discarded94.00'10.000 in/hr Exfiltration over Surface area
Discarded OutFlowMax=0.08 cfs @ 11.85 hrs HW=94.03' (Free Discharge)
โ€”1=Exfiltration (Exfiltration Controls 0.08 cfs)
Pond 56P: Subsurface Basin Lot 7
Exfiltration
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NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025 ons LLC Page 333
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 56P: Subsurface Basin Lot 7 - Chamber Wizard Field A
Chamber Model = ADS N-12 15" (ADS N-12ยฎ Pipe) Inside= 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside= 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf Row Length Adjustment= +1.00' x 1.20 sf x 3 rows 18.0" Wide + 10.9" Spacing = 28.9" C-C Row Spacing 2 Chambers/Row x 20.00' Long +1.00' Row Adjustment +1.50' Header x 2 = 44.00' Row Length +8.0" End Stone x 2 = 45.33' Base Length 3 Rows x 18.0" Wide + 10.9" Spacing x 2 + 8.0" Side Stone x 2 = 7.65' Base Width 4.0" Stone Base + 18.0" Chamber Height + 4.0" Stone Cover = 2.17' Field Height 6 Chambers x 24.0 cf +1.00' Row Adjustment x 1.20 sf x 3 Rows + 6.31' Header x 1.20 sf x 2 = 162.8 cf Chamber Storage 6 Chambers x 31.9 cf +1.00' Row Adjustment x 1.60 sf x 3 Rows + 6.31' Header x 1.60 sf x 2 = 216.5 cf Displacement 751.0 cf Field - 216.5 cf Chambers = 534.5 cf Stone x 40.0% Voids = 213.8 cf Stone Storage Chamber Storage + Stone Storage = 376.6 cf = 0.009 af Overall Storage Efficiency = 50.1% Overall System Size = 45.33' x 7.65' x 2.17' 6 Chambers 27.8 cy Field 19.8 cy Stone
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NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025 ons LLC Page 334
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 56P: Subsurface Basin Lot 7
Pond 56P: Subsurface Basin Lot 7
โ˜ Discarded
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NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025 ons LLC Page 335
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 56P: Subsurface Basin Lot 7
Stage-Area-Storage
0.000 0.001 0.001 0.002 0.002 0.003 0.003 0.004 0.004 0.005 0.005 0.006 0.006 0.007 0.007 0.008 0.009 Storage (acre-feet)
Surface Storage
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 56P: Subsurface Basin Lot 7
Time (hours)Inflow (cfs)Storage (acre-feet)Elevation (feet)Discarded (cfs)
0.000.000.00094.000.00
2.000.000.00094.000.00
4.000.000.00094.000.00
6.000.000.00094.000.00
8.000.010.00094.000.01
10.000.010.00094.000.01
12.000.170.00194.260.08
14.000.010.00094.000.01
16.000.010.00094.000.01
18.000.000.00094.000.00
20.000.000.00094.000.00
22.000.000.00094.000.00
24.000.000.00094.000.00
26.000.000.00094.000.00
28.000.000.00094.000.00
30.000.000.00094.000.00
32.000.000.00094.000.00
34.000.000.00094.000.00
36.000.000.00094.000.00
38.000.000.00094.000.00
40.000.000.00094.000.00
42.000.000.00094.000.00
44.000.000.00094.000.00
46.000.000.00094.000.00
48.000.000.00094.000.00
50.000.000.00094.000.00
52.000.000.00094.000.00
54.000.000.00094.000.00
56.000.000.00094.000.00
58.000.000.00094.000.00
60.000.000.00094.000.00
62.000.000.00094.000.00
64.000.000.00094.000.00
66.000.000.00094.000.00
68.000.000.00094.000.00
70.000.000.00094.000.00
72.000.000.00094.000.00
Page 958 Download HTML
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025 ons LLC Page 337
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 56P: Subsurface Basin Lot 7
Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
94.000.0095.040.08
94.020.0895.060.08
94.040.0895.080.08
94.060.0895.100.08
94.080.0895.120.08
94.100.0895.140.08
94.120.0895.160.08
94.140.0895.180.08
94.160.0895.200.08
94.180.0895.220.08
94.200.0895.240.08
94.220.0895.260.08
94.240.0895.280.08
94.260.0895.300.08
94.280.0895.320.08
94.300.0895.340.08
94.320.0895.360.08
94.340.0895.380.08
94.360.0895.400.08
94.380.0895.420.08
94.400.0895.440.08
94.420.0895.460.08
94.440.0895.480.08
94.460.0895.500.08
94.480.0895.520.08
94.500.0895.540.08
94.520.0895.560.08
94.540.0895.580.08
94.560.0895.600.08
94.580.0895.620.08
94.600.0895.640.08
94.620.0895.660.08
94.640.0895.680.08
94.660.0895.700.08
94.680.0895.720.08
94.700.0895.740.08
94.720.0895.760.08
94.740.0895.780.08
94.760.0895.800.08
94.780.0895.820.08
94.800.0895.840.08
94.820.0895.860.08
94.840.0895.880.08
94.860.0895.900.08
94.880.0895.920.08
94.900.0895.940.08
94.920.0895.960.08
94.940.0895.980.08
94.960.0896.000.08
94.980.0896.020.08
95.000.0896.040.08
95.020.0896.060.08
Elevation (feet)Discarded (cfs)
96.080.08
96.100.08
96.120.08
96.140.08
96.160.08
Page 959 Download HTML
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 10 YR-F Rainfall=6.34" Printed 10/24/2025 ons LLC Page 338
Stage-Area-Storage for Pond 56P: Subsurface Basin Lot 7
Elevation (feet)Surface (acres)Storage (acre-feet)
94.000.0080.000
94.050.0080.000
94.100.0080.000
94.150.0080.000
94.200.0080.001
94.250.0080.001
94.300.0080.001
94.350.0080.001
94.400.0080.001
94.450.0080.001
94.500.0080.002
94.550.0080.002
94.600.0080.002
94.650.0080.002
94.700.0080.002
94.750.0080.003
94.800.0080.003
94.850.0080.003
94.900.0080.003
94.950.0080.004
95.000.0080.004
95.050.0080.004
95.100.0080.004
95.150.0080.005
95.200.0080.005
95.250.0080.005
95.300.0080.005
95.350.0080.006
95.400.0080.006
95.450.0080.006
95.500.0080.006
95.550.0080.007
95.600.0080.007
95.650.0080.007
95.700.0080.007
95.750.0080.007
95.800.0080.007
95.850.0080.008
95.900.0080.008
95.950.0080.008
96.000.0080.008
96.050.0080.008
96.100.0080.008
96.150.0080.009
Page 960 Download HTML
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025 Page 339
Time span=0.00-72.00 hrs, dt=0.01 hrs, 7201 points Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method
Subcatchment 36S: Roof Lot 1Runoff Area=1,850 sf 100.00% Impervious Runoff Depth=9.24" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.42 cfs 1,424 cf
Subcatchment 37S: Roof Lot 8Runoff Area=1,850 sf 100.00% Impervious Runoff Depth=9.24" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.42 cfs 1,424 cf
Subcatchment 38S: Roof Lot 2Runoff Area=1,850 sf 100.00% Impervious Runoff Depth=9.24" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.42 cfs 1,424 cf
Subcatchment 40S: Roof Lot 9Runoff Area=1,850 sf 100.00% Impervious Runoff Depth=9.24" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.42 cfs 1,424 cf
Subcatchment 42S: Roof Lot 10Runoff Area=1,850 sf 100.00% Impervious Runoff Depth=9.24" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.42 cfs 1,424 cf
Subcatchment 44S: Roof Lot 3Runoff Area=1,850 sf 100.00% Impervious Runoff Depth=9.24" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.42 cfs 1,424 cf
Subcatchment 48S: Roof Lot 4Runoff Area=1,850 sf 100.00% Impervious Runoff Depth=9.24" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.42 cfs 1,424 cf
Subcatchment 51S: Roof Lot 6Runoff Area=1,850 sf 100.00% Impervious Runoff Depth=9.24" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.42 cfs 1,424 cf
Subcatchment 55S: Roof Lot 7Runoff Area=1,850 sf 100.00% Impervious Runoff Depth=9.24" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.42 cfs 1,424 cf
Pond 37P: Subsurface Basin Lot 1Peak Elev=92.49' Storage=0.011 af Inflow=0.42 cfs 1,424 cf Outflow=0.03 cfs 1,424 cf
Pond 38P: Subsurface Basin Lot 8Peak Elev=95.37' Storage=0.006 af Inflow=0.42 cfs 1,424 cf Outflow=0.08 cfs 1,424 cf
Pond 39P: Subsurface Basin Lot 2Peak Elev=94.42' Storage=0.007 af Inflow=0.42 cfs 1,424 cf Outflow=0.07 cfs 1,424 cf
Pond 41P: Subsurface Basin Lot 9Peak Elev=94.45' Storage=0.007 af Inflow=0.42 cfs 1,424 cf Outflow=0.07 cfs 1,424 cf
Pond 43P: Subsurface Basin Lot 10Peak Elev=93.37' Storage=0.006 af Inflow=0.42 cfs 1,424 cf Outflow=0.08 cfs 1,424 cf
Pond 46P: Subsurface Basin Lot 3Peak Elev=94.43' Storage=0.009 af Inflow=0.42 cfs 1,424 cf Outflow=0.05 cfs 1,424 cf
Pond 50P: Subsurface Basin Lot 4Peak Elev=94.43' Storage=0.009 af Inflow=0.42 cfs 1,424 cf Outflow=0.05 cfs 1,424 cf
Page 961 Download HTML
Analysis - Proposed Conditions NOAA 24-hr D 100 YR-C Rainfall=9.48" Prepared by Civil Core Consulting Printed 10/24/2025 HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 340
Pond 52P: Subsurface Basin Lot 6
Peak Elev=94.44' Storage=0.006 af Inflow=0.42 cfs 1,424 cf Outflow=0.07 cfs 1,424 cf
Pond 56P: Subsurface Basin Lot 7 Peak Elev=94.44' Storage=0.006 af Inflow=0.42 cfs 1,424 cf Outflow=0.07 cfs 1,424 cf
Peak Elev=95.37' Storage=0.006 af Inflow=0.42 cfs 1,424 cf Outflow=0.08 cfs 1,424 cf
Total Runoff Area = 16,650 sf Runoff Volume = 12,820 cf Average Runoff Depth = 9.24" 0.00% Pervious = 0 sf 100.00% Impervious = 16,650 sf
Runoff Volume = 12,820 cf Average Runoff Depth = 9.24" 0.00% Pervious = 0 sf 100.00% Impervious = 16,650 sf
Page 962 Download HTML
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
YR-C Rainfall=9.48" Printed 10/24/2025 Page 341
Summary for Subcatchment 36S: Roof Lot 1
Runoff = 0.42 cfs @ 12.09 hrs, Volume= 1,424 cf, Depth= 9.24"
Routed to Pond 37P : Subsurface Basin Lot 1
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 100 YR-C Rainfall=9.48"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)
0.4 45 2.00 Direct Entry, Pipe Flow
Subcatchment 36S: Roof Lot 1
Hydrograph
Page 963 Download HTML
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025
0 YR-C Rainfall=9.48" Printed 10/24/2025 Page 342
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 36S: Roof Lot 1
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.230.000.090.00
4.000.500.000.320.01
6.000.810.000.610.01
8.001.230.001.020.01
10.001.880.001.650.02
12.004.540.004.310.26
14.007.600.007.360.02
16.008.250.008.010.01
18.008.670.008.430.01
20.008.980.008.740.01
22.009.250.009.010.01
24.009.480.009.240.00
26.009.480.009.240.00
28.009.480.009.240.00
30.009.480.009.240.00
32.009.480.009.240.00
34.009.480.009.240.00
36.009.480.009.240.00
38.009.480.009.240.00
40.009.480.009.240.00
42.009.480.009.240.00
44.009.480.009.240.00
46.009.480.009.240.00
48.009.480.009.240.00
50.009.480.009.240.00
52.009.480.009.240.00
54.009.480.009.240.00
56.009.480.009.240.00
58.009.480.009.240.00
60.009.480.009.240.00
62.009.480.009.240.00
64.009.480.009.240.00
66.009.480.009.240.00
68.009.480.009.240.00
70.009.480.009.240.00
72.009.480.009.240.00
Page 964 Download HTML
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
YR-C Rainfall=9.48" Printed 10/24/2025 Page 343
Summary for Subcatchment 37S: Roof Lot 8
Runoff = 0.42 cfs @ 12.09 hrs, Volume= 1,424 cf, Depth= 9.24"
Routed to Pond 38P : Subsurface Basin Lot 8
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 100 YR-C Rainfall=9.48"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)
0.4 45 2.00 Direct Entry, Pipe Flow
Subcatchment 37S: Roof Lot 8
Hydrograph
Page 965 Download HTML
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025
0 YR-C Rainfall=9.48" Printed 10/24/2025 Page 344
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 37S: Roof Lot 8
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.230.000.090.00
4.000.500.000.320.01
6.000.810.000.610.01
8.001.230.001.020.01
10.001.880.001.650.02
12.004.540.004.310.26
14.007.600.007.360.02
16.008.250.008.010.01
18.008.670.008.430.01
20.008.980.008.740.01
22.009.250.009.010.01
24.009.480.009.240.00
26.009.480.009.240.00
28.009.480.009.240.00
30.009.480.009.240.00
32.009.480.009.240.00
34.009.480.009.240.00
36.009.480.009.240.00
38.009.480.009.240.00
40.009.480.009.240.00
42.009.480.009.240.00
44.009.480.009.240.00
46.009.480.009.240.00
48.009.480.009.240.00
50.009.480.009.240.00
52.009.480.009.240.00
54.009.480.009.240.00
56.009.480.009.240.00
58.009.480.009.240.00
60.009.480.009.240.00
62.009.480.009.240.00
64.009.480.009.240.00
66.009.480.009.240.00
68.009.480.009.240.00
70.009.480.009.240.00
72.009.480.009.240.00
Page 966 Download HTML
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
YR-C Rainfall=9.48" Printed 10/24/2025 Page 345
Summary for Subcatchment 38S: Roof Lot 2
Runoff = 0.42 cfs @ 12.09 hrs, Volume= 1,424 cf, Depth= 9.24"
Routed to Pond 39P : Subsurface Basin Lot 2
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 100 YR-C Rainfall=9.48"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)
0.4 45 2.00 Direct Entry, Pipe Flow
Subcatchment 38S: Roof Lot 2
Hydrograph
Page 967 Download HTML
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025
0 YR-C Rainfall=9.48" Printed 10/24/2025 Page 346
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 38S: Roof Lot 2
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.230.000.090.00
4.000.500.000.320.01
6.000.810.000.610.01
8.001.230.001.020.01
10.001.880.001.650.02
12.004.540.004.310.26
14.007.600.007.360.02
16.008.250.008.010.01
18.008.670.008.430.01
20.008.980.008.740.01
22.009.250.009.010.01
24.009.480.009.240.00
26.009.480.009.240.00
28.009.480.009.240.00
30.009.480.009.240.00
32.009.480.009.240.00
34.009.480.009.240.00
36.009.480.009.240.00
38.009.480.009.240.00
40.009.480.009.240.00
42.009.480.009.240.00
44.009.480.009.240.00
46.009.480.009.240.00
48.009.480.009.240.00
50.009.480.009.240.00
52.009.480.009.240.00
54.009.480.009.240.00
56.009.480.009.240.00
58.009.480.009.240.00
60.009.480.009.240.00
62.009.480.009.240.00
64.009.480.009.240.00
66.009.480.009.240.00
68.009.480.009.240.00
70.009.480.009.240.00
72.009.480.009.240.00
Page 968 Download HTML
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025
YR-C Rainfall=9.48" Printed 10/24/2025 Page 347
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 40S: Roof Lot 9
Runoff = 0.42 cfs @ 12.09 hrs, Volume= 1,424 cf, Depth= 9.24"
Routed to Pond 41P : Subsurface Basin Lot 9
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 100 YR-C Rainfall=9.48"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)
0.4 45 2.00 Direct Entry, Pipe Flow
Subcatchment 40S: Roof Lot 9
Hydrograph
Page 969 Download HTML
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025
0 YR-C Rainfall=9.48" Printed 10/24/2025 Page 348
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 40S: Roof Lot 9
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.230.000.090.00
4.000.500.000.320.01
6.000.810.000.610.01
8.001.230.001.020.01
10.001.880.001.650.02
12.004.540.004.310.26
14.007.600.007.360.02
16.008.250.008.010.01
18.008.670.008.430.01
20.008.980.008.740.01
22.009.250.009.010.01
24.009.480.009.240.00
26.009.480.009.240.00
28.009.480.009.240.00
30.009.480.009.240.00
32.009.480.009.240.00
34.009.480.009.240.00
36.009.480.009.240.00
38.009.480.009.240.00
40.009.480.009.240.00
42.009.480.009.240.00
44.009.480.009.240.00
46.009.480.009.240.00
48.009.480.009.240.00
50.009.480.009.240.00
52.009.480.009.240.00
54.009.480.009.240.00
56.009.480.009.240.00
58.009.480.009.240.00
60.009.480.009.240.00
62.009.480.009.240.00
64.009.480.009.240.00
66.009.480.009.240.00
68.009.480.009.240.00
70.009.480.009.240.00
72.009.480.009.240.00
Page 970 Download HTML
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
YR-C Rainfall=9.48" Printed 10/24/2025 Page 349
Summary for Subcatchment 42S: Roof Lot 10
Runoff = 0.42 cfs @ 12.09 hrs, Volume= 1,424 cf, Depth= 9.24" Routed to Pond 43P : Subsurface Basin Lot 10
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 100 YR-C Rainfall=9.48"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
0.4 45 2.00 Direct Entry, Pipe Flow
Subcatchment 42S: Roof Lot 10
Hydrograph
Page 971 Download HTML
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025
0 YR-C Rainfall=9.48" Printed 10/24/2025 Page 350
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 42S: Roof Lot 10
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.230.000.090.00
4.000.500.000.320.01
6.000.810.000.610.01
8.001.230.001.020.01
10.001.880.001.650.02
12.004.540.004.310.26
14.007.600.007.360.02
16.008.250.008.010.01
18.008.670.008.430.01
20.008.980.008.740.01
22.009.250.009.010.01
24.009.480.009.240.00
26.009.480.009.240.00
28.009.480.009.240.00
30.009.480.009.240.00
32.009.480.009.240.00
34.009.480.009.240.00
36.009.480.009.240.00
38.009.480.009.240.00
40.009.480.009.240.00
42.009.480.009.240.00
44.009.480.009.240.00
46.009.480.009.240.00
48.009.480.009.240.00
50.009.480.009.240.00
52.009.480.009.240.00
54.009.480.009.240.00
56.009.480.009.240.00
58.009.480.009.240.00
60.009.480.009.240.00
62.009.480.009.240.00
64.009.480.009.240.00
66.009.480.009.240.00
68.009.480.009.240.00
70.009.480.009.240.00
72.009.480.009.240.00
Page 972 Download HTML
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
YR-C Rainfall=9.48" Printed 10/24/2025 Page 351
Summary for Subcatchment 44S: Roof Lot 3
Runoff = 0.42 cfs @ 12.09 hrs, Volume= 1,424 cf, Depth= 9.24" Routed to Pond 46P : Subsurface Basin Lot 3
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 100 YR-C Rainfall=9.48"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
0.4 45 2.00 Direct Entry, Pipe Flow
Subcatchment 44S: Roof Lot 3
Hydrograph
Page 973 Download HTML
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025 tions LLC Page 352
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 44S: Roof Lot 3
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.230.000.090.00
4.000.500.000.320.01
6.000.810.000.610.01
8.001.230.001.020.01
10.001.880.001.650.02
12.004.540.004.310.26
14.007.600.007.360.02
16.008.250.008.010.01
18.008.670.008.430.01
20.008.980.008.740.01
22.009.250.009.010.01
24.009.480.009.240.00
26.009.480.009.240.00
28.009.480.009.240.00
30.009.480.009.240.00
32.009.480.009.240.00
34.009.480.009.240.00
36.009.480.009.240.00
38.009.480.009.240.00
40.009.480.009.240.00
42.009.480.009.240.00
44.009.480.009.240.00
46.009.480.009.240.00
48.009.480.009.240.00
50.009.480.009.240.00
52.009.480.009.240.00
54.009.480.009.240.00
56.009.480.009.240.00
58.009.480.009.240.00
60.009.480.009.240.00
62.009.480.009.240.00
64.009.480.009.240.00
66.009.480.009.240.00
68.009.480.009.240.00
70.009.480.009.240.00
72.009.480.009.240.00
Page 974 Download HTML
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 353
Summary for Subcatchment 48S: Roof Lot 4
Runoff = 0.42 cfs @ 12.09 hrs, Volume= 1,424 cf, Depth= 9.24"
Routed to Pond 50P : Subsurface Basin Lot 4
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 100 YR-C Rainfall=9.48"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)
0.4 45 2.00 Direct Entry, Pipe Flow
Subcatchment 48S: Roof Lot 4
Hydrograph
Page 975 Download HTML
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025
0 YR-C Rainfall=9.48" Printed 10/24/2025 Page 354
Analysis - Proposed Conditions NOAA 24 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 48S: Roof Lot 4
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.230.000.090.00
4.000.500.000.320.01
6.000.810.000.610.01
8.001.230.001.020.01
10.001.880.001.650.02
12.004.540.004.310.26
14.007.600.007.360.02
16.008.250.008.010.01
18.008.670.008.430.01
20.008.980.008.740.01
22.009.250.009.010.01
24.009.480.009.240.00
26.009.480.009.240.00
28.009.480.009.240.00
30.009.480.009.240.00
32.009.480.009.240.00
34.009.480.009.240.00
36.009.480.009.240.00
38.009.480.009.240.00
40.009.480.009.240.00
42.009.480.009.240.00
44.009.480.009.240.00
46.009.480.009.240.00
48.009.480.009.240.00
50.009.480.009.240.00
52.009.480.009.240.00
54.009.480.009.240.00
56.009.480.009.240.00
58.009.480.009.240.00
60.009.480.009.240.00
62.009.480.009.240.00
64.009.480.009.240.00
66.009.480.009.240.00
68.009.480.009.240.00
70.009.480.009.240.00
72.009.480.009.240.00
Page 976 Download HTML
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025 tions LLC Page 355
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 51S: Roof Lot 6
Runoff = 0.42 cfs @ 12.09 hrs, Volume= 1,424 cf, Depth= 9.24"
Routed to Pond 52P : Subsurface Basin Lot 6
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 100 YR-C Rainfall=9.48"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)
0.4 45 2.00 Direct Entry, Pipe Flow
Subcatchment 51S: Roof Lot 6
Hydrograph
Page 977 Download HTML
YR-C Rainfall=9.48" Printed 10/24/2025 Page 356
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 51S: Roof Lot 6
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.230.000.090.00
4.000.500.000.320.01
6.000.810.000.610.01
8.001.230.001.020.01
10.001.880.001.650.02
12.004.540.004.310.26
14.007.600.007.360.02
16.008.250.008.010.01
18.008.670.008.430.01
20.008.980.008.740.01
22.009.250.009.010.01
24.009.480.009.240.00
26.009.480.009.240.00
28.009.480.009.240.00
30.009.480.009.240.00
32.009.480.009.240.00
34.009.480.009.240.00
36.009.480.009.240.00
38.009.480.009.240.00
40.009.480.009.240.00
42.009.480.009.240.00
44.009.480.009.240.00
46.009.480.009.240.00
48.009.480.009.240.00
50.009.480.009.240.00
52.009.480.009.240.00
54.009.480.009.240.00
56.009.480.009.240.00
58.009.480.009.240.00
60.009.480.009.240.00
62.009.480.009.240.00
64.009.480.009.240.00
66.009.480.009.240.00
68.009.480.009.240.00
70.009.480.009.240.00
72.009.480.009.240.00
Page 978 Download HTML
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025 tions LLC Page 357
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 55S: Roof Lot 7
Runoff = 0.42 cfs @ 12.09 hrs, Volume= 1,424 cf, Depth= 9.24"
Routed to Pond 56P : Subsurface Basin Lot 7
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 100 YR-C Rainfall=9.48"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)
0.4 45 2.00 Direct Entry, Pipe Flow
Subcatchment 55S: Roof Lot 7
Hydrograph
Page 979 Download HTML
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025
0 YR-C Rainfall=9.48" Printed 10/24/2025 Page 358
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 55S: Roof Lot 7
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.230.000.090.00
4.000.500.000.320.01
6.000.810.000.610.01
8.001.230.001.020.01
10.001.880.001.650.02
12.004.540.004.310.26
14.007.600.007.360.02
16.008.250.008.010.01
18.008.670.008.430.01
20.008.980.008.740.01
22.009.250.009.010.01
24.009.480.009.240.00
26.009.480.009.240.00
28.009.480.009.240.00
30.009.480.009.240.00
32.009.480.009.240.00
34.009.480.009.240.00
36.009.480.009.240.00
38.009.480.009.240.00
40.009.480.009.240.00
42.009.480.009.240.00
44.009.480.009.240.00
46.009.480.009.240.00
48.009.480.009.240.00
50.009.480.009.240.00
52.009.480.009.240.00
54.009.480.009.240.00
56.009.480.009.240.00
58.009.480.009.240.00
60.009.480.009.240.00
62.009.480.009.240.00
64.009.480.009.240.00
66.009.480.009.240.00
68.009.480.009.240.00
70.009.480.009.240.00
72.009.480.009.240.00
Page 980 Download HTML
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025 tions LLC Page 359
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 37P: Subsurface Basin Lot 1
Inflow Area = 1,850 sf,100.00% Impervious, Inflow Depth = 9.24" for 100 YR-C event Inflow = 0.42 cfs @ 12.09 hrs, Volume= 1,424 cf Outflow = 0.03 cfs @ 11.13 hrs, Volume= 1,424 cf, Atten= 92%, Lag= 0.0 min Discarded = 0.03 cfs @ 11.13 hrs, Volume= 1,424 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 92.49' @ 13.11 hrs Surf.Area= 0.013 ac Storage= 0.011 af Plug-Flow detention time= 93.8 min calculated for 1,424 cf (100% of inflow) Center-of-Mass det. time= 93.8 min ( 828.7 - 735.0 )
VolumeInvertAvail.StorageStorage Description
#1A91.00'0.008 af10.06'W x 57.33'L x 2.17'H Field A
0.029 af Overall - 0.008 af Embedded = 0.020 af x 40.0% Voids
#2A91.33'0.006 afADS N-12 15" x 12 Inside #1 Inside = 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside = 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf Row Length Adjustment = -7.00' x 1.20 sf x 4 rows 8.72' Header x 1.20 sf x 2 = 20.9 cf Inside
0.014 af Total Available Storage
Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Discarded91.00'2.450 in/hr Exfiltration over Surface area
Discarded OutFlowMax=0.03 cfs @ 11.13 hrsHW=91.02' (Free Discharge)
1=Exfiltration (Exfiltration Controls 0.03 cfs)
Pond 37P: Subsurface Basin Lot 1 Exfiltration
Page 981 Download HTML
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025 tions LLC Page 360
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LL
Pond 37P: Subsurface Basin Lot 1 - Chamber Wizard Field A
Chamber Model = ADS N-12 15" (ADS N-12ยฎ Pipe) Inside= 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside= 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf Row Length Adjustment= -7.00' x 1.20 sf x 4 rows 18.0" Wide + 10.9" Spacing = 28.9" C-C Row Spacing 3 Chambers/Row x 20.00' Long -7.00' Row Adjustment +1.50' Header x 2 = 56.00' Row Length +8.0" End Stone x 2 = 57.33' Base Length 4 Rows x 18.0" Wide + 10.9" Spacing x 3 + 8.0" Side Stone x 2 = 10.06' Base Width 4.0" Stone Base + 18.0" Chamber Height + 4.0" Stone Cover = 2.17' Field Height 12 Chambers x 24.0 cf -7.00' Row Adjustment x 1.20 sf x 4 Rows + 8.72' Header x 1.20 sf x 2 = 275.3 cf Chamber Storage 12 Chambers x 31.9 cf -7.00' Row Adjustment x 1.60 sf x 4 Rows + 8.72' Header x 1.60 sf x 2 = 366.2 cf Displacement 1,248.8 cf Field - 366.2 cf Chambers = 882.6 cf Stone x 40.0% Voids = 353.0 cf Stone Storage Chamber Storage + Stone Storage = 628.4 cf = 0.014 af Overall Storage Efficiency = 50.3% Overall System Size = 57.33' x 10.06' x 2.17' 12 Chambers 46.3 cy Field 32.7 cy Stone
โ˜โ˜โ˜
Page 982 Download HTML
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025 tions LLC Page 361
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 37P: Subsurface Basin Lot 1
Pond 37P: Subsurface Basin Lot 1
โ˜ Discarded
Page 983 Download HTML
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025 tions LLC Page 362
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 37P: Subsurface Basin Lot 1
Page 984 Download HTML
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 37P: Subsurface Basin Lot 1
Time (hours)Inflow (cfs)Storage (acre-feet)Elevation (feet)Discarded (cfs)
0.000.000.00091.000.00
2.000.000.00091.000.00
4.000.010.00091.000.01
6.000.010.00091.000.01
8.000.010.00091.000.01
10.000.020.00091.010.02
12.000.260.00591.770.03
14.000.020.01092.410.03
16.000.010.00792.060.03
18.000.010.00391.590.03
20.000.010.00091.000.01
22.000.010.00091.000.01
24.000.000.00091.000.00
26.000.000.00091.000.00
28.000.000.00091.000.00
30.000.000.00091.000.00
32.000.000.00091.000.00
34.000.000.00091.000.00
36.000.000.00091.000.00
38.000.000.00091.000.00
40.000.000.00091.000.00
42.000.000.00091.000.00
44.000.000.00091.000.00
46.000.000.00091.000.00
48.000.000.00091.000.00
50.000.000.00091.000.00
52.000.000.00091.000.00
54.000.000.00091.000.00
56.000.000.00091.000.00
58.000.000.00091.000.00
60.000.000.00091.000.00
62.000.000.00091.000.00
64.000.000.00091.000.00
66.000.000.00091.000.00
68.000.000.00091.000.00
70.000.000.00091.000.00
72.000.000.00091.000.00
Page 363
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NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025 tions LLC Page 364
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 37P: Subsurface Basin Lot 1
Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
91.000.0092.040.03
91.020.0392.060.03
91.040.0392.080.03
91.060.0392.100.03
91.080.0392.120.03
91.100.0392.140.03
91.120.0392.160.03
91.140.0392.180.03
91.160.0392.200.03
91.180.0392.220.03
91.200.0392.240.03
91.220.0392.260.03
91.240.0392.280.03
91.260.0392.300.03
91.280.0392.320.03
91.300.0392.340.03
91.320.0392.360.03
91.340.0392.380.03
91.360.0392.400.03
91.380.0392.420.03
91.400.0392.440.03
91.420.0392.460.03
91.440.0392.480.03
91.460.0392.500.03
91.480.0392.520.03
91.500.0392.540.03
91.520.0392.560.03
91.540.0392.580.03
91.560.0392.600.03
91.580.0392.620.03
91.600.0392.640.03
91.620.0392.660.03
91.640.0392.680.03
91.660.0392.700.03
91.680.0392.720.03
91.700.0392.740.03
91.720.0392.760.03
91.740.0392.780.03
91.760.0392.800.03
91.780.0392.820.03
91.800.0392.840.03
91.820.0392.860.03
91.840.0392.880.03
91.860.0392.900.03
91.880.0392.920.03
91.900.0392.940.03
91.920.0392.960.03
91.940.0392.980.03
91.960.0393.000.03
91.980.0393.020.03
92.000.0393.040.03
92.020.0393.060.03
Elevation (feet)Discarded (cfs)
93.080.03
93.100.03
93.120.03
93.140.03
93.160.03
Page 364
Page 986 Download HTML
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LL
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025 tions LLC Page 365
Stage-Area-Storage for Pond 37P: Subsurface Basin Lot 1
Elevation (feet)Surface (acres)Storage (acre-feet)
91.000.0130.000
91.050.0130.000
91.100.0130.001
91.150.0130.001
91.200.0130.001
91.250.0130.001
91.300.0130.002
91.350.0130.002
91.400.0130.002
91.450.0130.002
91.500.0130.002
91.550.0130.003
91.600.0130.003
91.650.0130.004
91.700.0130.004
91.750.0130.004
91.800.0130.005
91.850.0130.005
91.900.0130.006
91.950.0130.006
92.000.0130.006
92.050.0130.007
92.100.0130.007
92.150.0130.008
92.200.0130.008
92.250.0130.009
92.300.0130.009
92.350.0130.010
92.400.0130.010
92.450.0130.010
92.500.0130.011
92.550.0130.011
92.600.0130.012
92.650.0130.012
92.700.0130.012
92.750.0130.012
92.800.0130.013
92.850.0130.013
92.900.0130.013
92.950.0130.013
93.000.0130.014
93.050.0130.014
93.100.0130.014
93.150.0130.014
Page 987 Download HTML
Analysis - Proposed Conditions NOAA 24-hr D 100 YR-C Rainfall=9.48" Prepared by Civil Core Consulting Printed 10/24/2025 HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 366
VolumeInvertAvail.StorageStorage Description
#1A94.00'0.005 af7.65"W x 45.33"L x 2.17"H Field A 0.017 af Overall - 0.005 af Embedded = 0.012 af x 40.0% Voids
#2A94.33'0.004 afADS N-12 15" x 6 Inside #1 Inside = 14.8"W x 14.8"H => 1.20 sf x 20.00"L = 24.0 cf Outside = 18.0"W x 18.0"H => 1.60 sf x 20.00"L = 31.9 cf Row Length Adjustment= +1.00' x 1.20 sf x 3 rows 6.31' Header x 1.20 sf x 2 = 15.2 cf Inside
0.009 afTotal Available Storage
Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Discarded94.00'10.000 in/hr Exfiltration over Surface area Phase-In= 0.01'
Discarded OutFlowMax=0.08 cfs @ 11.73 hrs HW=94.02' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.08 cfs)
Pond 38P: Subsurface Basin Lot 8
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Analysis - Proposed Conditions NOAA 24-hr D 100 YR-C Rainfall=9.48" Prepared by Civil Core Consulting Printed 10/24/2025 HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 367
Pond 38P: Subsurface Basin Lot 8 - Chamber Wizard Field A
Chamber Model = ADS N-12 15" (ADS N-12ยฎ Pipe) Inside= 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside= 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf Row Length Adjustment= +1.00' x 1.20 sf x 3 rows 18.0" Wide + 10.9" Spacing = 28.9" C-C Row Spacing 2 Chambers/Row x 20.00' Long +1.00' Row Adjustment +1.50' Header x 2 = 44.00' Row Length +8.0" End Stone x 2 = 45.33' Base Length 3 Rows x 18.0" Wide + 10.9" Spacing x 2 + 8.0" Side Stone x 2 = 7.65' Base Width 4.0" Stone Base + 18.0" Chamber Height + 4.0" Stone Cover = 2.17' Field Height 6 Chambers x 24.0 cf +1.00' Row Adjustment x 1.20 sf x 3 Rows + 6.31' Header x 1.20 sf x 2 = 162.8 cf Chamber Storage 6 Chambers x 31.9 cf +1.00' Row Adjustment x 1.60 sf x 3 Rows + 6.31' Header x 1.60 sf x 2 = 216.5 cf Displacement 751.0 cf Field - 216.5 cf Chambers = 534.5 cf Stone x 40.0% Voids = 213.8 cf Stone Storage Chamber Storage + Stone Storage = 376.6 cf = 0.009 af Overall Storage Efficiency = 50.1% Overall System Size = 45.33' x 7.65' x 2.17' 6 Chambers 27.8 cy Field 19.8 cy Stone
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NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025 tions LLC Page 368
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 38P: Subsurface Basin Lot 8
Pond 38P: Subsurface Basin Lot 8
โ˜ Discarded
Page 990 Download HTML
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025 tions LLC Page 369
Analysis - Proposed Conditions NOAA 24 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 38P: Subsurface Basin Lot 8
Stage-Area-Storage
0.000 0.001 0.001 0.002 0.002 0.003 0.003 0.004 0.004 0.005 0.005 0.006 0.006 0.007 0.007 0.008 0.009 Storage (acre-feet)
Surface Storage
Page 991 Download HTML
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025
0 YR-C Rainfall=9.48" Printed 10/24/2025 Page 370
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 38P: Subsurface Basin Lot 8
Time (hours)Inflow (cfs)Storage (acre-feet)Elevation (feet)Discarded (cfs)
0.000.000.00094.000.00
2.000.000.00094.000.00
4.000.010.00094.000.01
6.000.010.00094.000.01
8.000.010.00094.000.01
10.000.020.00094.000.02
12.000.260.00294.640.08
14.000.020.00094.000.02
16.000.010.00094.000.01
18.000.010.00094.000.01
20.000.010.00094.000.01
22.000.010.00094.000.01
24.000.000.00094.000.00
26.000.000.00094.000.00
28.000.000.00094.000.00
30.000.000.00094.000.00
32.000.000.00094.000.00
34.000.000.00094.000.00
36.000.000.00094.000.00
38.000.000.00094.000.00
40.000.000.00094.000.00
42.000.000.00094.000.00
44.000.000.00094.000.00
46.000.000.00094.000.00
48.000.000.00094.000.00
50.000.000.00094.000.00
52.000.000.00094.000.00
54.000.000.00094.000.00
56.000.000.00094.000.00
58.000.000.00094.000.00
60.000.000.00094.000.00
62.000.000.00094.000.00
64.000.000.00094.000.00
66.000.000.00094.000.00
68.000.000.00094.000.00
70.000.000.00094.000.00
72.000.000.00094.000.00
Page 992 Download HTML
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025
0 YR-C Rainfall=9.48" Printed 10/24/2025 Page 371
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 38P: Subsurface Basin Lot 8
Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
94.000.0095.040.08
94.020.0895.060.08
94.040.0895.080.08
94.060.0895.100.08
94.080.0895.120.08
94.100.0895.140.08
94.120.0895.160.08
94.140.0895.180.08
94.160.0895.200.08
94.180.0895.220.08
94.200.0895.240.08
94.220.0895.260.08
94.240.0895.280.08
94.260.0895.300.08
94.280.0895.320.08
94.300.0895.340.08
94.320.0895.360.08
94.340.0895.380.08
94.360.0895.400.08
94.380.0895.420.08
94.400.0895.440.08
94.420.0895.460.08
94.440.0895.480.08
94.460.0895.500.08
94.480.0895.520.08
94.500.0895.540.08
94.520.0895.560.08
94.540.0895.580.08
94.560.0895.600.08
94.580.0895.620.08
94.600.0895.640.08
94.620.0895.660.08
94.640.0895.680.08
94.660.0895.700.08
94.680.0895.720.08
94.700.0895.740.08
94.720.0895.760.08
94.740.0895.780.08
94.760.0895.800.08
94.780.0895.820.08
94.800.0895.840.08
94.820.0895.860.08
94.840.0895.880.08
94.860.0895.900.08
94.880.0895.920.08
94.900.0895.940.08
94.920.0895.960.08
94.940.0895.980.08
94.960.0896.000.08
94.980.0896.020.08
95.000.0896.040.08
95.020.0896.060.08
Elevation (feet)Discarded (cfs)
96.080.08
96.100.08
96.120.08
96.140.08
96.160.08
Page 993 Download HTML
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025 tions LLC Page 372
Stage-Area-Storage for Pond 38P: Subsurface Basin Lot 8
Elevation (feet)Surface (acres)Storage (acre-feet)
94.000.0080.000
94.050.0080.000
94.100.0080.000
94.150.0080.000
94.200.0080.001
94.250.0080.001
94.300.0080.001
94.350.0080.001
94.400.0080.001
94.450.0080.001
94.500.0080.002
94.550.0080.002
94.600.0080.002
94.650.0080.002
94.700.0080.002
94.750.0080.003
94.800.0080.003
94.850.0080.003
94.900.0080.003
94.950.0080.004
95.000.0080.004
95.050.0080.004
95.100.0080.004
95.150.0080.005
95.200.0080.005
95.250.0080.005
95.300.0080.005
95.350.0080.006
95.400.0080.006
95.450.0080.006
95.500.0080.006
95.550.0080.007
95.600.0080.007
95.650.0080.007
95.700.0080.007
95.750.0080.007
95.800.0080.007
95.850.0080.008
95.900.0080.008
95.950.0080.008
96.000.0080.008
96.050.0080.008
96.100.0080.008
96.150.0080.009
Page 372
Page 994 Download HTML
Summary for Pond 39P: Subsurface Basin Lot 2
Inflow Area = 1,850 sf, 100.00% Impervious, Inflow Depth = 9.24" for 100 YR-C event Inflow = 0.42 cfs @ 12.09 hrs, Volume= 1,424 cf Outflow = 0.07 cfs @ 11.63 hrs, Volume= 1,424 cf, Atten= 84%, Lag= 0.0 min Discarded = 0.07 cfs @ 11.63 hrs, Volume= 1,424 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 94.42' @ 12.50 hrs Surf.Area= 0.009 ac Storage= 0.007 af Plug-Flow detention time= 20.2 min calculated for 1,424 cf (100% of inflow) Center-of-Mass det. time= 20.2 min (755.1 - 735.0)
VolumeInvertAvail.StorageStorage Description
#1A93.00'0.005 af7.65"W x 49.33"L x 2.17"H Field A
0.019 af Overall - 0.005 af Embedded = 0.013 af x 40.0% Voids
#2A93.33'0.004 afADS N-12 15" x 6 Inside #1 Inside = 14.8"W x 14.8"H => 1.20 sf x 20.00"L = 24.0 cf Outside = 18.0"W x 18.0"H => 1.60 sf x 20.00"L = 31.9 cf Row Length Adjustment= +5.00' x 1.20 sf x 3 rows 6.31' Header x 1.20 sf x 2 = 15.2 cf Inside
0.009 af Total Available Storage
Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Discarded93.00'7.850 in/hr Exfiltration over Surface area
Discarded OutFlowMax=0.07 cfs @ 11.63 hrs HW=93.02' (Free Discharge)
1=Exfiltration (Exfiltration Controls 0.07 cfs)
Pond 39P: Subsurface Basin Lot 2
Exfiltration
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Analysis - Proposed Conditions NOAA 24-hr D 100 YR-C Rainfall=9.48" Prepared by Civil Core Consulting Printed 10/24/2025 HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 374
Pond 39P: Subsurface Basin Lot 2 - Chamber Wizard Field A
Chamber Model = ADS N-12 15" (ADS N-12ยฎ Pipe) Inside= 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside= 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf Row Length Adjustment= +5.00' x 1.20 sf x 3 rows 18.0" Wide + 10.9" Spacing = 28.9" C-C Row Spacing 2 Chambers/Row x 20.00' Long +5.00' Row Adjustment +1.50' Header x 2 = 48.00' Row Length +8.0" End Stone x 2 = 49.33' Base Length 3 Rows x 18.0" Wide + 10.9" Spacing x 2 + 8.0" Side Stone x 2 = 7.65' Base Width 4.0" Stone Base + 18.0" Chamber Height + 4.0" Stone Cover = 2.17' Field Height 6 Chambers x 24.0 cf +5.00' Row Adjustment x 1.20 sf x 3 Rows + 6.31' Header x 1.20 sf x 2 = 177.2 cf Chamber Storage 6 Chambers x 31.9 cf +5.00' Row Adjustment x 1.60 sf x 3 Rows + 6.31' Header x 1.60 sf x 2 = 235.7 cf Displacement 817.3 cf Field - 235.7 cf Chambers = 581.6 cf Stone x 40.0% Voids = 232.6 cf Stone Storage Chamber Storage + Stone Storage = 409.8 cf = 0.009 af Overall Storage Efficiency = 50.1% Overall System Size = 49.33' x 7.65' x 2.17' 6 Chambers 30.3 cy Field 21.5 cy Stone
Page 996 Download HTML
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025 tions LLC Page 375
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 39P: Subsurface Basin Lot 2
Pond 39P: Subsurface Basin Lot 2
โ˜ Discarded
Page 997 Download HTML
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025 tions LLC Page 376
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 39P: Subsurface Basin Lot 2
Stage-Area-Storage
0 0.000 0.001 0.001 0.002 0.002 0.003 0.003 0.004 0.004 0.005 0.005 0.006 0.006 0.007 0.007 0.008 0.009 0.009 Storage (acre-feet)
Page 998 Download HTML
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 39P: Subsurface Basin Lot 2
Time (hours)Inflow (cfs)Storage (acre-feet)Elevation (feet)Discarded (cfs)
0.000.000.00093.000.00
2.000.000.00093.000.00
4.000.010.00093.000.01
6.000.010.00093.000.01
8.000.010.00093.000.01
10.000.020.00093.000.02
12.000.260.00293.680.07
14.000.020.00293.620.07
16.000.010.00093.000.01
18.000.010.00093.000.01
20.000.010.00093.000.01
22.000.010.00093.000.01
24.000.000.00093.000.00
26.000.000.00093.000.00
28.000.000.00093.000.00
30.000.000.00093.000.00
32.000.000.00093.000.00
34.000.000.00093.000.00
36.000.000.00093.000.00
38.000.000.00093.000.00
40.000.000.00093.000.00
42.000.000.00093.000.00
44.000.000.00093.000.00
46.000.000.00093.000.00
48.000.000.00093.000.00
50.000.000.00093.000.00
52.000.000.00093.000.00
54.000.000.00093.000.00
56.000.000.00093.000.00
58.000.000.00093.000.00
60.000.000.00093.000.00
62.000.000.00093.000.00
64.000.000.00093.000.00
66.000.000.00093.000.00
68.000.000.00093.000.00
70.000.000.00093.000.00
72.000.000.00093.000.00
Page 377
Page 999 Download HTML
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 39P: Subsurface Basin Lot 2
Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
93.000.0094.040.07
93.020.0794.060.07
93.040.0794.080.07
93.060.0794.100.07
93.080.0794.120.07
93.100.0794.140.07
93.120.0794.160.07
93.140.0794.180.07
93.160.0794.200.07
93.180.0794.220.07
93.200.0794.240.07
93.220.0794.260.07
93.240.0794.280.07
93.260.0794.300.07
93.280.0794.320.07
93.300.0794.340.07
93.320.0794.360.07
93.340.0794.380.07
93.360.0794.400.07
93.380.0794.420.07
93.400.0794.440.07
93.420.0794.460.07
93.440.0794.480.07
93.460.0794.500.07
93.480.0794.520.07
93.500.0794.540.07
93.520.0794.560.07
93.540.0794.580.07
93.560.0794.600.07
93.580.0794.620.07
93.600.0794.640.07
93.620.0794.660.07
93.640.0794.680.07
93.660.0794.700.07
93.680.0794.720.07
93.700.0794.740.07
93.720.0794.760.07
93.740.0794.780.07
93.760.0794.800.07
93.780.0794.820.07
93.800.0794.840.07
93.820.0794.860.07
93.840.0794.880.07
93.860.0794.900.07
93.880.0794.920.07
93.900.0794.940.07
93.920.0794.960.07
93.940.0794.980.07
93.960.0795.000.07
93.980.0795.020.07
94.000.0795.040.07
94.020.0795.060.07
Elevation (feet)Discarded (cfs)
95.080.07
95.100.07
95.120.07
95.140.07
95.160.07
R-C Rainfall=9.48" Printed 10/24/2025 Page 378
Page 1000 Download HTML
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions Ltd
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025 tions LLC Page 379
Stage-Area-Storage for Pond 39P: Subsurface Basin Lot 2
Elevation (feet)Surface (acres)Storage (acre-feet)
93.000.0090.000
93.050.0090.000
93.100.0090.000
93.150.0090.001
93.200.0090.001
93.250.0090.001
93.300.0090.001
93.350.0090.001
93.400.0090.001
93.450.0090.001
93.500.0090.002
93.550.0090.002
93.600.0090.002
93.650.0090.002
93.700.0090.003
93.750.0090.003
93.800.0090.003
93.850.0090.003
93.900.0090.004
93.950.0090.004
94.000.0090.004
94.050.0090.005
94.100.0090.005
94.150.0090.005
94.200.0090.005
94.250.0090.006
94.300.0090.006
94.350.0090.006
94.400.0090.007
94.450.0090.007
94.500.0090.007
94.550.0090.007
94.600.0090.008
94.650.0090.008
94.700.0090.008
94.750.0090.008
94.800.0090.008
94.850.0090.008
94.900.0090.008
94.950.0090.009
95.000.0090.009
95.050.0090.009
95.100.0090.009
95.150.0090.009
Page 379
Page 1001 Download HTML
Summary for Pond 41P: Subsurface Basin Lot 9
Inflow Area = 1,850 sf, 100.00% Impervious, Inflow Depth = 9.24" for 100 YR-C event Inflow = 0.42 cfs @ 12.09 hrs, Volume= 1,424 cf Outflow = 0.07 cfs @ 11.62 hrs, Volume= 1,424 cf, Atten= 84%, Lag= 0.0 min Discarded = 0.07 cfs @ 11.62 hrs, Volume= 1,424 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 94.45' @ 12.50 hrs Surf.Area= 0.008 ac Storage= 0.007 af Plug-Flow detention time= 20.3 min calculated for 1,424 cf (100% of inflow) Center-of-Mass det. time= 20.3 min (755.2 - 735.0)
VolumeInvertAvail.StorageStorage Description
#1A93.00'0.005 af7.65'W x 48.33'L x 2.17'H Field A 0.018 af Overall - 0.005 af Embedded = 0.013 af x 40.0% Voids
#2A93.33'0.004 afADS N-12 15" x 6 Inside #1 Inside = 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside = 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf Row Length Adjustment= +4.00' x 1.20 sf x 3 rows 6.31' Header x 1.20 sf x 2 = 15.2 cf Inside
0.009 af Total Available Storage
Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Discarded93.00'8.000 in/hr Exfiltration over Surface area
Discarded OutFlowMax=0.07 cfs @ 11.62 hrsHW=93.02' (Free Discharge)
โ€”1=Exfiltration (Exfiltration Controls 0.07 cfs)
Pond 41P: Subsurface Basin Lot 9
Exfiltration
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Analysis - Proposed Conditions NOAA 24-hr D 100 YR-C Rainfall=9.48" Prepared by Civil Core Consulting Printed 10/24/2025 HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 381
Pond 41P: Subsurface Basin Lot 9 - Chamber Wizard Field A
Chamber Model = ADS N-12 15" (ADS N-12ยฎ Pipe) Inside= 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside= 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf Row Length Adjustment= +4.00' x 1.20 sf x 3 rows 18.0" Wide + 10.9" Spacing = 28.9" C-C Row Spacing 2 Chambers/Row x 20.00' Long +4.00' Row Adjustment +1.50' Header x 2 = 47.00' Row Length +8.0" End Stone x 2 = 48.33' Base Length 3 Rows x 18.0" Wide + 10.9" Spacing x 2 + 8.0" Side Stone x 2 = 7.65' Base Width 4.0" Stone Base + 18.0" Chamber Height + 4.0" Stone Cover = 2.17' Field Height 6 Chambers x 24.0 cf +4.00' Row Adjustment x 1.20 sf x 3 Rows + 6.31' Header x 1.20 sf x 2 = 173.6 cf Chamber Storage 6 Chambers x 31.9 cf +4.00' Row Adjustment x 1.60 sf x 3 Rows + 6.31' Header x 1.60 sf x 2 = 230.9 cf Displacement 800.7 cf Field - 230.9 cf Chambers = 569.8 cf Stone x 40.0% Voids = 227.9 cf Stone Storage Chamber Storage + Stone Storage = 401.5 cf = 0.009 af Overall Storage Efficiency = 50.1% Overall System Size = 48.33' x 7.65' x 2.17' 6 Chambers 29.7 cy Field 21.1 cy Stone
โ—‹โ—‹โ—‹
Page 1003 Download HTML
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025 tions LLC Page 382
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 41P: Subsurface Basin Lot 9
Pond 41P: Subsurface Basin Lot 9
โ˜ Discarded
Page 1004 Download HTML
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025 tions LLC Page 383
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 41P: Subsurface Basin Lot 9
Page 1005 Download HTML
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 41P: Subsurface Basin Lot 9
Time (hours)Inflow (cfs)Storage (acre-feet)Elevation (feet)Discarded (cfs)
0.000.000.00093.000.00
2.000.000.00093.000.00
4.000.010.00093.000.01
6.000.010.00093.000.01
8.000.010.00093.000.01
10.000.020.00093.000.02
12.000.260.00293.690.07
14.000.020.00293.630.07
16.000.010.00093.000.01
18.000.010.00093.000.01
20.000.010.00093.000.01
22.000.010.00093.000.01
24.000.000.00093.000.00
26.000.000.00093.000.00
28.000.000.00093.000.00
30.000.000.00093.000.00
32.000.000.00093.000.00
34.000.000.00093.000.00
36.000.000.00093.000.00
38.000.000.00093.000.00
40.000.000.00093.000.00
42.000.000.00093.000.00
44.000.000.00093.000.00
46.000.000.00093.000.00
48.000.000.00093.000.00
50.000.000.00093.000.00
52.000.000.00093.000.00
54.000.000.00093.000.00
56.000.000.00093.000.00
58.000.000.00093.000.00
60.000.000.00093.000.00
62.000.000.00093.000.00
64.000.000.00093.000.00
66.000.000.00093.000.00
68.000.000.00093.000.00
70.000.000.00093.000.00
72.000.000.00093.000.00
Page 384
Page 1006 Download HTML
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 41P: Subsurface Basin Lot 9
Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
93.000.0094.040.07
93.020.0794.060.07
93.040.0794.080.07
93.060.0794.100.07
93.080.0794.120.07
93.100.0794.140.07
93.120.0794.160.07
93.140.0794.180.07
93.160.0794.200.07
93.180.0794.220.07
93.200.0794.240.07
93.220.0794.260.07
93.240.0794.280.07
93.260.0794.300.07
93.280.0794.320.07
93.300.0794.340.07
93.320.0794.360.07
93.340.0794.380.07
93.360.0794.400.07
93.380.0794.420.07
93.400.0794.440.07
93.420.0794.460.07
93.440.0794.480.07
93.460.0794.500.07
93.480.0794.520.07
93.500.0794.540.07
93.520.0794.560.07
93.540.0794.580.07
93.560.0794.600.07
93.580.0794.620.07
93.600.0794.640.07
93.620.0794.660.07
93.640.0794.680.07
93.660.0794.700.07
93.680.0794.720.07
93.700.0794.740.07
93.720.0794.760.07
93.740.0794.780.07
93.760.0794.800.07
93.780.0794.820.07
93.800.0794.840.07
93.820.0794.860.07
93.840.0794.880.07
93.860.0794.900.07
93.880.0794.920.07
93.900.0794.940.07
93.920.0794.960.07
93.940.0794.980.07
93.960.0795.000.07
93.980.0795.020.07
94.000.0795.040.07
94.020.0795.060.07
Elevation (feet)Discarded (cfs)
95.080.07
95.100.07
95.120.07
95.140.07
95.160.07
Page 385
Page 1007 Download HTML
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LL
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025 tions LLC Page 386
Stage-Area-Storage for Pond 41P: Subsurface Basin Lot 9
Elevation (feet)Surface (acres)Storage (acre-feet)
93.000.0080.000
93.050.0080.000
93.100.0080.000
93.150.0080.001
93.200.0080.001
93.250.0080.001
93.300.0080.001
93.350.0080.001
93.400.0080.001
93.450.0080.001
93.500.0080.002
93.550.0080.002
93.600.0080.002
93.650.0080.002
93.700.0080.003
93.750.0080.003
93.800.0080.003
93.850.0080.003
93.900.0080.004
93.950.0080.004
94.000.0080.004
94.050.0080.004
94.100.0080.005
94.150.0080.005
94.200.0080.005
94.250.0080.006
94.300.0080.006
94.350.0080.006
94.400.0080.006
94.450.0080.007
94.500.0080.007
94.550.0080.007
94.600.0080.007
94.650.0080.008
94.700.0080.008
94.750.0080.008
94.800.0080.008
94.850.0080.008
94.900.0080.008
94.950.0080.008
95.000.0080.009
95.050.0080.009
95.100.0080.009
95.150.0080.009
Page 1008 Download HTML
Analysis - Proposed Conditions NOAA 24-hr D 100 YR-C Rainfall=9.48" Prepared by Civil Core Consulting Printed 10/24/2025 HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 387
VolumeInvertAvail.StorageStorage Description
#1A92.00'0.005 af7.65"W x 45.33"L x 2.17"H Field A 0.017 af Overall - 0.005 af Embedded = 0.012 af x 40.0% Voids
#2A92.33'0.004 afADS N-12 15" x 6 Inside #1 Inside= 14.8"W x 14.8"H => 1.20 sf x 20.00"L = 24.0 cf Outside= 18.0"W x 18.0"H => 1.60 sf x 20.00"L = 31.9 cf Row Length Adjustment= +1.00' x 1.20 sf x 3 rows 6.31' Header x 1.20 sf x 2 = 15.2 cf Inside
0.009 afTotal Available Storage
Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Discarded92.00'10.000 in/hr Exfiltration over Surface area Phase-In= 0.01'
Discarded OutFlowMax=0.08 cfs @ 11.73 hrs HW=92.02' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.08 cfs)
Pond 43P: Subsurface Basin Lot 10
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Analysis - Proposed Conditions NOAA 24-hr D 100 YR-C Rainfall=9.48" Prepared by Civil Core Consulting Printed 10/24/2025 HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 388
Pond 43P: Subsurface Basin Lot 10 - Chamber Wizard Field A
Chamber Model = ADS N-12 15" (ADS N-12ยฎ Pipe) Inside= 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside= 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf Row Length Adjustment= +1.00' x 1.20 sf x 3 rows 18.0" Wide + 10.9" Spacing = 28.9" C-C Row Spacing 2 Chambers/Row x 20.00' Long +1.00' Row Adjustment +1.50' Header x 2 = 44.00' Row Length +8.0" End Stone x 2 = 45.33' Base Length 3 Rows x 18.0" Wide + 10.9" Spacing x 2 + 8.0" Side Stone x 2 = 7.65' Base Width 4.0" Stone Base + 18.0" Chamber Height + 4.0" Stone Cover = 2.17' Field Height 6 Chambers x 24.0 cf +1.00' Row Adjustment x 1.20 sf x 3 Rows + 6.31' Header x 1.20 sf x 2 = 162.8 cf Chamber Storage 6 Chambers x 31.9 cf +1.00' Row Adjustment x 1.60 sf x 3 Rows + 6.31' Header x 1.60 sf x 2 = 216.5 cf Displacement 751.0 cf Field - 216.5 cf Chambers = 534.5 cf Stone x 40.0% Voids = 213.8 cf Stone Storage Chamber Storage + Stone Storage = 376.6 cf = 0.009 af Overall Storage Efficiency = 50.1% Overall System Size = 45.33' x 7.65' x 2.17' 6 Chambers 27.8 cy Field 19.8 cy Stone
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NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025 tions LLC Page 389
Analysis - Proposed Conditions NOAA 24 Prepared by Civil Core Consulting HydroCAD\circledR 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 43P: Subsurface Basin Lot 10
Pond 43P: Subsurface Basin Lot 10
Stage-Discharge
โ˜ Discarded
Page 1011 Download HTML
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025 tions LLC Page 390
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 43P: Subsurface Basin Lot 10
Stage-Area-Storage
Surface Storage
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NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 43P: Subsurface Basin Lot 10
Time (hours)Inflow (cfs)Storage (acre-feet)Elevation (feet)Discarded (cfs)
0.000.000.00092.000.00
2.000.000.00092.000.00
4.000.010.00092.000.01
6.000.010.00092.000.01
8.000.010.00092.000.01
10.000.020.00092.000.02
12.000.260.00292.640.08
14.000.020.00092.000.02
16.000.010.00092.000.01
18.000.010.00092.000.01
20.000.010.00092.000.01
22.000.010.00092.000.01
24.000.000.00092.000.00
26.000.000.00092.000.00
28.000.000.00092.000.00
30.000.000.00092.000.00
32.000.000.00092.000.00
34.000.000.00092.000.00
36.000.000.00092.000.00
38.000.000.00092.000.00
40.000.000.00092.000.00
42.000.000.00092.000.00
44.000.000.00092.000.00
46.000.000.00092.000.00
48.000.000.00092.000.00
50.000.000.00092.000.00
52.000.000.00092.000.00
54.000.000.00092.000.00
56.000.000.00092.000.00
58.000.000.00092.000.00
60.000.000.00092.000.00
62.000.000.00092.000.00
64.000.000.00092.000.00
66.000.000.00092.000.00
68.000.000.00092.000.00
70.000.000.00092.000.00
72.000.000.00092.000.00
Page 391
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YR-C Rainfall=9.48" Printed 10/24/2025 Page 392
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 43P: Subsurface Basin Lot 10
Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
92.000.0093.040.08
92.020.0893.060.08
92.040.0893.080.08
92.060.0893.100.08
92.080.0893.120.08
92.100.0893.140.08
92.120.0893.160.08
92.140.0893.180.08
92.160.0893.200.08
92.180.0893.220.08
92.200.0893.240.08
92.220.0893.260.08
92.240.0893.280.08
92.260.0893.300.08
92.280.0893.320.08
92.300.0893.340.08
92.320.0893.360.08
92.340.0893.380.08
92.360.0893.400.08
92.380.0893.420.08
92.400.0893.440.08
92.420.0893.460.08
92.440.0893.480.08
92.460.0893.500.08
92.480.0893.520.08
92.500.0893.540.08
92.520.0893.560.08
92.540.0893.580.08
92.560.0893.600.08
92.580.0893.620.08
92.600.0893.640.08
92.620.0893.660.08
92.640.0893.680.08
92.660.0893.700.08
92.680.0893.720.08
92.700.0893.740.08
92.720.0893.760.08
92.740.0893.780.08
92.760.0893.800.08
92.780.0893.820.08
92.800.0893.840.08
92.820.0893.860.08
92.840.0893.880.08
92.860.0893.900.08
92.880.0893.920.08
92.900.0893.940.08
92.920.0893.960.08
92.940.0893.980.08
92.960.0894.000.08
92.980.0894.020.08
93.000.0894.040.08
93.020.0894.060.08
Elevation (feet)Discarded (cfs)
94.080.08
94.100.08
94.120.08
94.140.08
94.160.08
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Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LL
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025 tions LLC Page 393
Stage-Area-Storage for Pond 43P: Subsurface Basin Lot 10
Elevation (feet)Surface (acres)Storage (acre-feet)
92.000.0080.000
92.050.0080.000
92.100.0080.000
92.150.0080.000
92.200.0080.001
92.250.0080.001
92.300.0080.001
92.350.0080.001
92.400.0080.001
92.450.0080.001
92.500.0080.002
92.550.0080.002
92.600.0080.002
92.650.0080.002
92.700.0080.002
92.750.0080.003
92.800.0080.003
92.850.0080.003
92.900.0080.003
92.950.0080.004
93.000.0080.004
93.050.0080.004
93.100.0080.004
93.150.0080.005
93.200.0080.005
93.250.0080.005
93.300.0080.005
93.350.0080.006
93.400.0080.006
93.450.0080.006
93.500.0080.006
93.550.0080.007
93.600.0080.007
93.650.0080.007
93.700.0080.007
93.750.0080.007
93.800.0080.007
93.850.0080.008
93.900.0080.008
93.950.0080.008
94.000.0080.008
94.050.0080.008
94.100.0080.008
94.150.0080.009
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Analysis - Proposed Conditions NOAA 24-hr D 100 YR-C Rainfall=9.48" Prepared by Civil Core Consulting Printed 10/24/2025 HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 394
VolumeInvertAvail.StorageStorage Description
#1A93.00'0.007 af7.65"W x 64.33"L x 2.17"H Field A 0.024 af Overall - 0.007 af Embedded = 0.017 af x 40.0% Voids
#2A93.33'0.005 afADS N-12 15" x 9 Inside #1 Inside = 14.8"W x 14.8"H => 1.20 sf x 20.00"L = 24.0 cf Outside = 18.0"W x 18.0"H => 1.60 sf x 20.00"L = 31.9 cf 9 Chambers in 3 Rows 6.31" Header x 1.20 sf x 2 = 15.2 cf Inside
0.012 afTotal Available Storage
Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Discarded93.00'4.050 in/hr Exfiltration over Surface area Phase-In= 0.01'
Discarded OutFlowMax=0.05 cfs @ 11.44 hrs HW=93.02' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.05 cfs)
Pond 46P: Subsurface Basin Lot 3
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NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025 tions LLC Page 395
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 46P: Subsurface Basin Lot 3 - Chamber Wizard Field A
Chamber Model = ADS N-12 15" (ADS N-12ยฎ Pipe) Inside= 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside= 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf 18.0" Wide + 10.9" Spacing = 28.9" C-C Row Spacing 3 Chambers/Row x 20.00' Long +1.50' Header x 2 = 63.00' Row Length +8.0" End Stone x 2 = 64.33' Base Length 3 Rows x 18.0" Wide + 10.9" Spacing x 2 + 8.0" Side Stone x 2 = 7.65' Base Width 4.0" Stone Base + 18.0" Chamber Height + 4.0" Stone Cover = 2.17' Field Height 9 Chambers x 24.0 cf + 6.31' Header x 1.20 sf x 2 = 231.2 cf Chamber Storage 9 Chambers x 31.9 cf + 6.31' Header x 1.60 sf x 2 = 307.5 cf Displacement 1,065.8 cf Field - 307.5 cf Chambers = 758.3 cf Stone x 40.0% Voids = 303.3 cf Stone Storage Chamber Storage + Stone Storage = 534.5 cf = 0.012 af Overall Storage Efficiency = 50.1% Overall System Size = 64.33' x 7.65' x 2.17' 9 Chambers 39.5 cy Field 28.1 cy Stone
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NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025 tions LLC Page 396
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 46P: Subsurface Basin Lot 3
Pond 46P: Subsurface Basin Lot 3
Stage-Discharge
โ˜ Discarded
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NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025 tions LLC Page 397
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 46P: Subsurface Basin Lot 3
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NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 46P: Subsurface Basin Lot 3
Time (hours)Inflow (cfs)Storage (acre-feet)Elevation (feet)Discarded (cfs)
0.000.000.00093.000.00
2.000.000.00093.000.00
4.000.010.00093.000.01
6.000.010.00093.000.01
8.000.010.00093.000.01
10.000.020.00093.000.02
12.000.260.00393.720.05
14.000.020.00794.180.05
16.000.010.00293.340.05
18.000.010.00093.000.01
20.000.010.00093.000.01
22.000.010.00093.000.01
24.000.000.00093.000.00
26.000.000.00093.000.00
28.000.000.00093.000.00
30.000.000.00093.000.00
32.000.000.00093.000.00
34.000.000.00093.000.00
36.000.000.00093.000.00
38.000.000.00093.000.00
40.000.000.00093.000.00
42.000.000.00093.000.00
44.000.000.00093.000.00
46.000.000.00093.000.00
48.000.000.00093.000.00
50.000.000.00093.000.00
52.000.000.00093.000.00
54.000.000.00093.000.00
56.000.000.00093.000.00
58.000.000.00093.000.00
60.000.000.00093.000.00
62.000.000.00093.000.00
64.000.000.00093.000.00
66.000.000.00093.000.00
68.000.000.00093.000.00
70.000.000.00093.000.00
72.000.000.00093.000.00
Page 398
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NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 46P: Subsurface Basin Lot 3
Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
93.000.0094.040.05
93.020.0594.060.05
93.040.0594.080.05
93.060.0594.100.05
93.080.0594.120.05
93.100.0594.140.05
93.120.0594.160.05
93.140.0594.180.05
93.160.0594.200.05
93.180.0594.220.05
93.200.0594.240.05
93.220.0594.260.05
93.240.0594.280.05
93.260.0594.300.05
93.280.0594.320.05
93.300.0594.340.05
93.320.0594.360.05
93.340.0594.380.05
93.360.0594.400.05
93.380.0594.420.05
93.400.0594.440.05
93.420.0594.460.05
93.440.0594.480.05
93.460.0594.500.05
93.480.0594.520.05
93.500.0594.540.05
93.520.0594.560.05
93.540.0594.580.05
93.560.0594.600.05
93.580.0594.620.05
93.600.0594.640.05
93.620.0594.660.05
93.640.0594.680.05
93.660.0594.700.05
93.680.0594.720.05
93.700.0594.740.05
93.720.0594.760.05
93.740.0594.780.05
93.760.0594.800.05
93.780.0594.820.05
93.800.0594.840.05
93.820.0594.860.05
93.840.0594.880.05
93.860.0594.900.05
93.880.0594.920.05
93.900.0594.940.05
93.920.0594.960.05
93.940.0594.980.05
93.960.0595.000.05
93.980.0595.020.05
94.000.0595.040.05
94.020.0595.060.05
Elevation (feet)Discarded (cfs)
95.080.05
95.100.05
95.120.05
95.140.05
95.160.05
Page 399
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Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LL
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025 tions LLC Page 400
Stage-Area-Storage for Pond 46P: Subsurface Basin Lot 3
Elevation (feet)Surface (acres)Storage (acre-feet)
93.000.0110.000
93.050.0110.000
93.100.0110.000
93.150.0110.001
93.200.0110.001
93.250.0110.001
93.300.0110.001
93.350.0110.002
93.400.0110.002
93.450.0110.002
93.500.0110.002
93.550.0110.002
93.600.0110.003
93.650.0110.003
93.700.0110.003
93.750.0110.004
93.800.0110.004
93.850.0110.004
93.900.0110.005
93.950.0110.005
94.000.0110.006
94.050.0110.006
94.100.0110.006
94.150.0110.007
94.200.0110.007
94.250.0110.007
94.300.0110.008
94.350.0110.008
94.400.0110.008
94.450.0110.009
94.500.0110.009
94.550.0110.009
94.600.0110.010
94.650.0110.010
94.700.0110.010
94.750.0110.010
94.800.0110.011
94.850.0110.011
94.900.0110.011
94.950.0110.011
95.000.0110.012
95.050.0110.012
95.100.0110.012
95.150.0110.012
Page 1022 Download HTML
Summary for Pond 50P: Subsurface Basin Lot 4
Inflow Area = 1,850 sf, 100.00% Impervious, Inflow Depth = 9.24" for 100 YR-C event Inflow = 0.42 cfs @ 12.09 hrs, Volume= 1,424 cf Outflow = 0.05 cfs @ 11.44 hrs, Volume= 1,424 cf, Atten= 89%, Lag= 0.0 min Discarded = 0.05 cfs @ 11.44 hrs, Volume= 1,424 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 94.43' @ 12.80 hrs Surf.Area= 0.011 ac Storage= 0.009 af Plug-Flow detention time= 47.0 min calculated for 1,424 cf (100% of inflow) Center-of-Mass det. time= 47.0 min (782.0 - 735.0)
VolumeInvertAvail.StorageStorage Description
#1A93.00'0.007 af7.65"W x 64.33"L x 2.17"H Field A
0.024 af Overall - 0.007 af Embedded = 0.017 af x 40.0% Voids
#2A93.33'0.005 afADS N-12 15" x 9 Inside #1 Inside = 14.8"W x 14.8"H => 1.20 sf x 20.00"L = 24.0 cf Outside = 18.0"W x 18.0"H => 1.60 sf x 20.00"L = 31.9 cf 9 Chambers in 3 Rows 6.31' Header x 1.20 sf x 2 = 15.2 cf Inside
0.012 afTotal Available Storage
0.012 af Total Available Storage
Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Discarded93.00'4.050 in/hr Exfiltration over Surface area
Discarded OutFlowMax=0.05 cfs @ 11.44 hrsHW=93.02' (Free Discharge)
1=Exfiltration (Exfiltration Controls 0.05 cfs)
Pond 50P: Subsurface Basin Lot 4
Exfiltration
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NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025 tions LLC Page 402
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 50P: Subsurface Basin Lot 4 - Chamber Wizard Field A
Chamber Model = ADS N-12 15" (ADS N-12ยฎ Pipe) Inside= 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside= 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf 18.0" Wide + 10.9" Spacing = 28.9" C-C Row Spacing 3 Chambers/Row x 20.00' Long +1.50' Header x 2 = 63.00' Row Length +8.0" End Stone x 2 = 64.33' Base Length 3 Rows x 18.0" Wide + 10.9" Spacing x 2 + 8.0" Side Stone x 2 = 7.65' Base Width 4.0" Stone Base + 18.0" Chamber Height + 4.0" Stone Cover = 2.17' Field Height 9 Chambers x 24.0 cf + 6.31' Header x 1.20 sf x 2 = 231.2 cf Chamber Storage 9 Chambers x 31.9 cf + 6.31' Header x 1.60 sf x 2 = 307.5 cf Displacement 1,065.8 cf Field - 307.5 cf Chambers = 758.3 cf Stone x 40.0% Voids = 303.3 cf Stone Storage Chamber Storage + Stone Storage = 534.5 cf = 0.012 af Overall Storage Efficiency = 50.1% Overall System Size = 64.33' x 7.65' x 2.17' 9 Chambers 39.5 cy Field 28.1 cy Stone
Page 1024 Download HTML
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025 tions LLC Page 403
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 50P: Subsurface Basin Lot 4
Pond 50P: Subsurface Basin Lot 4
Stage-Discharge
โ˜ Discarded
Page 1025 Download HTML
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025 tions LLC Page 404
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 50P: Subsurface Basin Lot 4
Page 1026 Download HTML
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 50P: Subsurface Basin Lot 4
Time (hours)Inflow (cfs)Storage (acre-feet)Elevation (feet)Discarded (cfs)
0.000.000.00093.000.00
2.000.000.00093.000.00
4.000.010.00093.000.01
6.000.010.00093.000.01
8.000.010.00093.000.01
10.000.020.00093.000.02
12.000.260.00393.720.05
14.000.020.00794.180.05
16.000.010.00293.340.05
18.000.010.00093.000.01
20.000.010.00093.000.01
22.000.010.00093.000.01
24.000.000.00093.000.00
26.000.000.00093.000.00
28.000.000.00093.000.00
30.000.000.00093.000.00
32.000.000.00093.000.00
34.000.000.00093.000.00
36.000.000.00093.000.00
38.000.000.00093.000.00
40.000.000.00093.000.00
42.000.000.00093.000.00
44.000.000.00093.000.00
46.000.000.00093.000.00
48.000.000.00093.000.00
50.000.000.00093.000.00
52.000.000.00093.000.00
54.000.000.00093.000.00
56.000.000.00093.000.00
58.000.000.00093.000.00
60.000.000.00093.000.00
62.000.000.00093.000.00
64.000.000.00093.000.00
66.000.000.00093.000.00
68.000.000.00093.000.00
70.000.000.00093.000.00
72.000.000.00093.000.00
Page 405
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NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025 tions LLC Page 406
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 50P: Subsurface Basin Lot 4
Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
93.000.0094.040.05
93.020.0594.060.05
93.040.0594.080.05
93.060.0594.100.05
93.080.0594.120.05
93.100.0594.140.05
93.120.0594.160.05
93.140.0594.180.05
93.160.0594.200.05
93.180.0594.220.05
93.200.0594.240.05
93.220.0594.260.05
93.240.0594.280.05
93.260.0594.300.05
93.280.0594.320.05
93.300.0594.340.05
93.320.0594.360.05
93.340.0594.380.05
93.360.0594.400.05
93.380.0594.420.05
93.400.0594.440.05
93.420.0594.460.05
93.440.0594.480.05
93.460.0594.500.05
93.480.0594.520.05
93.500.0594.540.05
93.520.0594.560.05
93.540.0594.580.05
93.560.0594.600.05
93.580.0594.620.05
93.600.0594.640.05
93.620.0594.660.05
93.640.0594.680.05
93.660.0594.700.05
93.680.0594.720.05
93.700.0594.740.05
93.720.0594.760.05
93.740.0594.780.05
93.760.0594.800.05
93.780.0594.820.05
93.800.0594.840.05
93.820.0594.860.05
93.840.0594.880.05
93.860.0594.900.05
93.880.0594.920.05
93.900.0594.940.05
93.920.0594.960.05
93.940.0594.980.05
93.960.0595.000.05
93.980.0595.020.05
94.000.0595.040.05
94.020.0595.060.05
Elevation (feet)Discarded (cfs)
95.080.05
95.100.05
95.120.05
95.140.05
95.160.05
Page 1028 Download HTML
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LL
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025
Stage-Area-Storage for Pond 50P: Subsurface Basin Lot 4
Elevation (feet)Surface (acres)Storage (acre-feet)
93.000.0110.000
93.050.0110.000
93.100.0110.000
93.150.0110.001
93.200.0110.001
93.250.0110.001
93.300.0110.001
93.350.0110.002
93.400.0110.002
93.450.0110.002
93.500.0110.002
93.550.0110.002
93.600.0110.003
93.650.0110.003
93.700.0110.003
93.750.0110.004
93.800.0110.004
93.850.0110.004
93.900.0110.005
93.950.0110.005
94.000.0110.006
94.050.0110.006
94.100.0110.006
94.150.0110.007
94.200.0110.007
94.250.0110.007
94.300.0110.008
94.350.0110.008
94.400.0110.008
94.450.0110.009
94.500.0110.009
94.550.0110.009
94.600.0110.010
94.650.0110.010
94.700.0110.010
94.750.0110.010
94.800.0110.011
94.850.0110.011
94.900.0110.011
94.950.0110.011
95.000.0110.012
95.050.0110.012
95.100.0110.012
95.150.0110.012
Page 407
Page 1029 Download HTML
Summary for Pond 52P: Subsurface Basin Lot 6
Inflow Area = 1,850 sf, 100.00% Impervious, Inflow Depth = 9.24" for 100 YR-C event Inflow = 0.42 cfs @ 12.09 hrs, Volume= 1,424 cf Outflow = 0.07 cfs @ 11.66 hrs, Volume= 1,424 cf, Atten= 83%, Lag= 0.0 min Discarded = 0.07 cfs @ 11.66 hrs, Volume= 1,424 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 94.44' @ 12.50 hrs Surf.Area= 0.008 ac Storage= 0.006 af Plug-Flow detention time= 18.7 min calculated for 1,424 cf (100% of inflow) Center-of-Mass det. time= 18.7 min (753.7 - 735.0)
VolumeInvertAvail.StorageStorage Description
#1A93.00'0.005 af7.65"W x 47.33"L x 2.17"H Field A
0.018 af Overall - 0.005 af Embedded = 0.013 af x 40.0% Voids
#2A93.33'0.004 afADS N-12 15" x 6 Inside #1 Inside = 14.8"W x 14.8"H => 1.20 sf x 20.00"L = 24.0 cf Outside = 18.0"W x 18.0"H => 1.60 sf x 20.00"L = 31.9 cf Row Length Adjustment= +3.00' x 1.20 sf x 3 rows 6.31' Header x 1.20 sf x 2 = 15.2 cf Inside
0.009 af Total Available Storage
Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Discarded93.00'8.450 in/hr Exfiltration over Surface area
Discarded OutFlowMax=0.07 cfs @ 11.66 hrsHW=93.02' (Free Discharge)
1=Exfiltration (Exfiltration Controls 0.07 cfs)
Pond 52P: Subsurface Basin Lot 6
Exfiltration
Page 1030 Download HTML
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025 tions LLC Page 409
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 52P: Subsurface Basin Lot 6 - Chamber Wizard Field A
Chamber Model = ADS N-12 15" (ADS N-12ยฎ Pipe) Inside= 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside= 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf Row Length Adjustment= +3.00' x 1.20 sf x 3 rows 18.0" Wide + 10.9" Spacing = 28.9" C-C Row Spacing 2 Chambers/Row x 20.00' Long +3.00' Row Adjustment +1.50' Header x 2 = 46.00' Row Length +8.0" End Stone x 2 = 47.33' Base Length 3 Rows x 18.0" Wide + 10.9" Spacing x 2 + 8.0" Side Stone x 2 = 7.65' Base Width 4.0" Stone Base + 18.0" Chamber Height + 4.0" Stone Cover = 2.17' Field Height 6 Chambers x 24.0 cf +3.00' Row Adjustment x 1.20 sf x 3 Rows + 6.31' Header x 1.20 sf x 2 = 170.0 cf Chamber Storage 6 Chambers x 31.9 cf +3.00' Row Adjustment x 1.60 sf x 3 Rows + 6.31' Header x 1.60 sf x 2 = 226.1 cf Displacement 784.1 cf Field - 226.1 cf Chambers = 558.1 cf Stone x 40.0% Voids = 223.2 cf Stone Storage Chamber Storage + Stone Storage = 393.2 cf = 0.009 af Overall Storage Efficiency = 50.1% Overall System Size = 47.33' x 7.65' x 2.17' 6 Chambers 29.0 cy Field 20.7 cy Stone
Page 1031 Download HTML
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025 tions LLC Page 410
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 52P: Subsurface Basin Lot 6
Pond 52P: Subsurface Basin Lot 6
โ˜ Discarded
Page 1032 Download HTML
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 411
Pond 52P: Subsurface Basin Lot 6
Stage-Area-Storage
Page 1033 Download HTML
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 52P: Subsurface Basin Lot 6
Time (hours)Inflow (cfs)Storage (acre-feet)Elevation (feet)Discarded (cfs)
0.000.000.00093.000.00
2.000.000.00093.000.00
4.000.010.00093.000.01
6.000.010.00093.000.01
8.000.010.00093.000.01
10.000.020.00093.000.02
12.000.260.00293.680.07
14.000.020.00293.530.07
16.000.010.00093.000.01
18.000.010.00093.000.01
20.000.010.00093.000.01
22.000.010.00093.000.01
24.000.000.00093.000.00
26.000.000.00093.000.00
28.000.000.00093.000.00
30.000.000.00093.000.00
32.000.000.00093.000.00
34.000.000.00093.000.00
36.000.000.00093.000.00
38.000.000.00093.000.00
40.000.000.00093.000.00
42.000.000.00093.000.00
44.000.000.00093.000.00
46.000.000.00093.000.00
48.000.000.00093.000.00
50.000.000.00093.000.00
52.000.000.00093.000.00
54.000.000.00093.000.00
56.000.000.00093.000.00
58.000.000.00093.000.00
60.000.000.00093.000.00
62.000.000.00093.000.00
64.000.000.00093.000.00
66.000.000.00093.000.00
68.000.000.00093.000.00
70.000.000.00093.000.00
72.000.000.00093.000.00
Page 412
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NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 52P: Subsurface Basin Lot 6
Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
93.000.0094.040.07
93.020.0794.060.07
93.040.0794.080.07
93.060.0794.100.07
93.080.0794.120.07
93.100.0794.140.07
93.120.0794.160.07
93.140.0794.180.07
93.160.0794.200.07
93.180.0794.220.07
93.200.0794.240.07
93.220.0794.260.07
93.240.0794.280.07
93.260.0794.300.07
93.280.0794.320.07
93.300.0794.340.07
93.320.0794.360.07
93.340.0794.380.07
93.360.0794.400.07
93.380.0794.420.07
93.400.0794.440.07
93.420.0794.460.07
93.440.0794.480.07
93.460.0794.500.07
93.480.0794.520.07
93.500.0794.540.07
93.520.0794.560.07
93.540.0794.580.07
93.560.0794.600.07
93.580.0794.620.07
93.600.0794.640.07
93.620.0794.660.07
93.640.0794.680.07
93.660.0794.700.07
93.680.0794.720.07
93.700.0794.740.07
93.720.0794.760.07
93.740.0794.780.07
93.760.0794.800.07
93.780.0794.820.07
93.800.0794.840.07
93.820.0794.860.07
93.840.0794.880.07
93.860.0794.900.07
93.880.0794.920.07
93.900.0794.940.07
93.920.0794.960.07
93.940.0794.980.07
93.960.0795.000.07
93.980.0795.020.07
94.000.0795.040.07
94.020.0795.060.07
Elevation (feet)Discarded (cfs)
95.080.07
95.100.07
95.120.07
95.140.07
95.160.07
Page 413
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Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LL
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025
Stage-Area-Storage for Pond 52P: Subsurface Basin Lot 6
Elevation (feet)Surface (acres)Storage (acre-feet)
93.000.0080.000
93.050.0080.000
93.100.0080.000
93.150.0080.000
93.200.0080.001
93.250.0080.001
93.300.0080.001
93.350.0080.001
93.400.0080.001
93.450.0080.001
93.500.0080.002
93.550.0080.002
93.600.0080.002
93.650.0080.002
93.700.0080.002
93.750.0080.003
93.800.0080.003
93.850.0080.003
93.900.0080.003
93.950.0080.004
94.000.0080.004
94.050.0080.004
94.100.0080.005
94.150.0080.005
94.200.0080.005
94.250.0080.005
94.300.0080.006
94.350.0080.006
94.400.0080.006
94.450.0080.006
94.500.0080.007
94.550.0080.007
94.600.0080.007
94.650.0080.007
94.700.0080.008
94.750.0080.008
94.800.0080.008
94.850.0080.008
94.900.0080.008
94.950.0080.008
95.000.0080.008
95.050.0080.009
95.100.0080.009
95.150.0080.009
Page 414
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Analysis - Proposed Conditions NOAA 24-hr D 100 YR-C Rainfall=9.48" Prepared by Civil Core Consulting Printed 10/24/2025 HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 415
VolumeInvertAvail.StorageStorage Description
#1A94.00'0.005 af7.65"W x 45.33"L x 2.17"H Field A 0.017 af Overall - 0.005 af Embedded = 0.012 af x 40.0% Voids
#2A94.33'0.004 afADS N-12 15" x 6 Inside #1 Inside = 14.8"W x 14.8"H => 1.20 sf x 20.00"L = 24.0 cf Outside = 18.0"W x 18.0"H => 1.60 sf x 20.00"L = 31.9 cf Row Length Adjustment= +1.00' x 1.20 sf x 3 rows 6.31' Header x 1.20 sf x 2 = 15.2 cf Inside
0.009 afTotal Available Storage
Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Discarded94.00'10.000 in/hr Exfiltration over Surface area Phase-In= 0.01'
Discarded OutFlowMax=0.08 cfs @ 11.73 hrs HW=94.02' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.08 cfs)
Pond 56P: Subsurface Basin Lot 7
Page 1037 Download HTML
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025 tions LLC Page 416
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 56P: Subsurface Basin Lot 7 - Chamber Wizard Field A
Chamber Model = ADS N-12 15" (ADS N-12ยฎ Pipe) Inside= 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside= 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf Row Length Adjustment= +1.00' x 1.20 sf x 3 rows 18.0" Wide + 10.9" Spacing = 28.9" C-C Row Spacing 2 Chambers/Row x 20.00' Long +1.00' Row Adjustment +1.50' Header x 2 = 44.00' Row Length +8.0" End Stone x 2 = 45.33' Base Length 3 Rows x 18.0" Wide + 10.9" Spacing x 2 + 8.0" Side Stone x 2 = 7.65' Base Width 4.0" Stone Base + 18.0" Chamber Height + 4.0" Stone Cover = 2.17' Field Height 6 Chambers x 24.0 cf +1.00' Row Adjustment x 1.20 sf x 3 Rows + 6.31' Header x 1.20 sf x 2 = 162.8 cf Chamber Storage 6 Chambers x 31.9 cf +1.00' Row Adjustment x 1.60 sf x 3 Rows + 6.31' Header x 1.60 sf x 2 = 216.5 cf Displacement 751.0 cf Field - 216.5 cf Chambers = 534.5 cf Stone x 40.0% Voids = 213.8 cf Stone Storage Chamber Storage + Stone Storage = 376.6 cf = 0.009 af Overall Storage Efficiency = 50.1% Overall System Size = 45.33' x 7.65' x 2.17' 6 Chambers 27.8 cy Field 19.8 cy Stone
Page 1038 Download HTML
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025 tions LLC Page 417
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 56P: Subsurface Basin Lot 7
Pond 56P: Subsurface Basin Lot 7
โ˜ Discarded
Page 1039 Download HTML
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 418
Pond 56P: Subsurface Basin Lot 7
Stage-Area-Storage
0.000 0.001 0.001 0.002 0.002 0.003 0.003 0.004 0.004 0.005 0.005 0.006 0.006 0.007 0.007 0.008 0.009 Storage (acre-feet)
Surface Storage
Page 1040 Download HTML
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 56P: Subsurface Basin Lot 7
Time (hours)Inflow (cfs)Storage (acre-feet)Elevation (feet)Discarded (cfs)
0.000.000.00094.000.00
2.000.000.00094.000.00
4.000.010.00094.000.01
6.000.010.00094.000.01
8.000.010.00094.000.01
10.000.020.00094.000.02
12.000.260.00294.640.08
14.000.020.00094.000.02
16.000.010.00094.000.01
18.000.010.00094.000.01
20.000.010.00094.000.01
22.000.010.00094.000.01
24.000.000.00094.000.00
26.000.000.00094.000.00
28.000.000.00094.000.00
30.000.000.00094.000.00
32.000.000.00094.000.00
34.000.000.00094.000.00
36.000.000.00094.000.00
38.000.000.00094.000.00
40.000.000.00094.000.00
42.000.000.00094.000.00
44.000.000.00094.000.00
46.000.000.00094.000.00
48.000.000.00094.000.00
50.000.000.00094.000.00
52.000.000.00094.000.00
54.000.000.00094.000.00
56.000.000.00094.000.00
58.000.000.00094.000.00
60.000.000.00094.000.00
62.000.000.00094.000.00
64.000.000.00094.000.00
66.000.000.00094.000.00
68.000.000.00094.000.00
70.000.000.00094.000.00
72.000.000.00094.000.00
Page 419
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NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 56P: Subsurface Basin Lot 7
Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
94.000.0095.040.08
94.020.0895.060.08
94.040.0895.080.08
94.060.0895.100.08
94.080.0895.120.08
94.100.0895.140.08
94.120.0895.160.08
94.140.0895.180.08
94.160.0895.200.08
94.180.0895.220.08
94.200.0895.240.08
94.220.0895.260.08
94.240.0895.280.08
94.260.0895.300.08
94.280.0895.320.08
94.300.0895.340.08
94.320.0895.360.08
94.340.0895.380.08
94.360.0895.400.08
94.380.0895.420.08
94.400.0895.440.08
94.420.0895.460.08
94.440.0895.480.08
94.460.0895.500.08
94.480.0895.520.08
94.500.0895.540.08
94.520.0895.560.08
94.540.0895.580.08
94.560.0895.600.08
94.580.0895.620.08
94.600.0895.640.08
94.620.0895.660.08
94.640.0895.680.08
94.660.0895.700.08
94.680.0895.720.08
94.700.0895.740.08
94.720.0895.760.08
94.740.0895.780.08
94.760.0895.800.08
94.780.0895.820.08
94.800.0895.840.08
94.820.0895.860.08
94.840.0895.880.08
94.860.0895.900.08
94.880.0895.920.08
94.900.0895.940.08
94.920.0895.960.08
94.940.0895.980.08
94.960.0896.000.08
94.980.0896.020.08
95.000.0896.040.08
95.020.0896.060.08
Elevation (feet)Discarded (cfs)
96.080.08
96.100.08
96.120.08
96.140.08
96.160.08
YR-C Rainfall=9.48" Printed 10/24/2025 Page 420
Page 1042 Download HTML
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LL
NOAA 24-hr D 100 YR-C Rainfall=9.48" Printed 10/24/2025
Stage-Area-Storage for Pond 56P: Subsurface Basin Lot 7
Elevation (feet)Surface (acres)Storage (acre-feet)
94.000.0080.000
94.050.0080.000
94.100.0080.000
94.150.0080.000
94.200.0080.001
94.250.0080.001
94.300.0080.001
94.350.0080.001
94.400.0080.001
94.450.0080.001
94.500.0080.002
94.550.0080.002
94.600.0080.002
94.650.0080.002
94.700.0080.002
94.750.0080.003
94.800.0080.003
94.850.0080.003
94.900.0080.003
94.950.0080.004
95.000.0080.004
95.050.0080.004
95.100.0080.004
95.150.0080.005
95.200.0080.005
95.250.0080.005
95.300.0080.005
95.350.0080.006
95.400.0080.006
95.450.0080.006
95.500.0080.006
95.550.0080.007
95.600.0080.007
95.650.0080.007
95.700.0080.007
95.750.0080.007
95.800.0080.007
95.850.0080.008
95.900.0080.008
95.950.0080.008
96.000.0080.008
96.050.0080.008
96.100.0080.008
96.150.0080.009
Page 421
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Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025 utions LLC Page 422
Time span=0.00-72.00 hrs, dt=0.01 hrs, 7201 points Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method
Reach Routing by Dyf-Stor-Ind Method - Pond Routing by Dyf-Stor-Ind Method
Subcatchment 36S: Roof Lot 1Runoff Area=1,850 sf 100.00% Impervious Runoff Depth=11.17" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.51 cfs 1,722 cf
Subcatchment 37S: Roof Lot 8Runoff Area=1,850 sf 100.00% Impervious Runoff Depth=11.17" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.51 cfs 1,722 cf
Subcatchment 38S: Roof Lot 2Runoff Area=1,850 sf 100.00% Impervious Runoff Depth=11.17" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.51 cfs 1,722 cf
Subcatchment 40S: Roof Lot 9Runoff Area=1,850 sf 100.00% Impervious Runoff Depth=11.17" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.51 cfs 1,722 cf
Subcatchment 42S: Roof Lot 10Runoff Area=1,850 sf 100.00% Impervious Runoff Depth=11.17" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.51 cfs 1,722 cf
Subcatchment 44S: Roof Lot 3Runoff Area=1,850 sf 100.00% Impervious Runoff Depth=11.17" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.51 cfs 1,722 cf
Subcatchment 48S: Roof Lot 4Runoff Area=1,850 sf 100.00% Impervious Runoff Depth=11.17" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.51 cfs 1,722 cf
Subcatchment 51S: Roof Lot 6Runoff Area=1,850 sf 100.00% Impervious Runoff Depth=11.17" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.51 cfs 1,722 cf
Subcatchment 55S: Roof Lot 7Runoff Area=1,850 sf 100.00% Impervious Runoff Depth=11.17" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.51 cfs 1,722 cf
Pond 37P: Subsurface Basin Lot 1Peak Elev=93.14' Storage=0.014 af Inflow=0.51 cfs 1,722 cf Outflow=0.03 cfs 1,722 cf
Pond 38P: Subsurface Basin Lot 8Peak Elev=96.01' Storage=0.008 af Inflow=0.51 cfs 1,722 cf Outflow=0.08 cfs 1,722 cf
Pond 39P: Subsurface Basin Lot 2Peak Elev=95.08' Storage=0.009 af Inflow=0.51 cfs 1,722 cf Outflow=0.07 cfs 1,722 cf
Pond 41P: Subsurface Basin Lot 9Peak Elev=95.14' Storage=0.009 af Inflow=0.51 cfs 1,722 cf Outflow=0.07 cfs 1,722 cf
Pond 43P: Subsurface Basin Lot 10Peak Elev=94.01' Storage=0.008 af Inflow=0.51 cfs 1,722 cf Outflow=0.08 cfs 1,722 cf
Pond 46P: Subsurface Basin Lot 3Peak Elev=95.06' Storage=0.012 af Inflow=0.51 cfs 1,722 cf Outflow=0.05 cfs 1,722 cf
Pond 50P: Subsurface Basin Lot 4Peak Elev=95.06' Storage=0.012 af Inflow=0.51 cfs 1,722 cf Outflow=0.05 cfs 1,722 cf
Page 1044 Download HTML
Analysis - Proposed Conditions NOAA 24-hr D 100 YR-F Rainfall=11.41" Prepared by Civil Core Consulting Printed 10/24/2025 HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 423
Pond 52P: Subsurface Basin Lot 6
Peak Elev=95.14' Storage=0.009 af Inflow=0.51 cfs 1,722 cf Outflow=0.07 cfs 1,722 cf
Pond 56P: Subsurface Basin Lot 7 Peak Elev=95.14' Storage=0.009 af Inflow=0.51 cfs 1,722 cf Outflow=0.07 cfs 1,722 cf
Peak Elev=96.01' Storage=0.008 af Inflow=0.51 cfs 1,722 cf Outflow=0.08 cfs 1,722 cf
Total Runoff Area = 16,650 sf Runoff Volume = 15,497 cf Average Runoff Depth = 11.17" 0.00% Pervious = 0 sf 100.00% Impervious = 16,650 sf
Page 1045 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025
YR-F Rainfall=11.41" Printed 10/24/2025 Page 424
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 36S: Roof Lot 1
Runoff = 0.51 cfs @ 12.09 hrs, Volume= 1,722 cf, Depth=11.17" Routed to Pond 37P : Subsurface Basin Lot 1
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 100 YR-F Rainfall=11.41"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
0.4 45 2.00 Direct Entry, Pipe Flow
Subcatchment 36S: Roof Lot 1
Page 1046 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 36S: Roof Lot 1
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.270.000.120.00
4.000.600.000.410.01
6.000.970.000.770.01
8.001.480.001.260.01
10.002.260.002.030.02
12.005.470.005.230.31
14.009.150.008.910.02
16.009.930.009.690.01
18.0010.440.0010.190.01
20.0010.810.0010.570.01
22.0011.140.0010.890.01
24.0011.410.0011.170.01
26.0011.410.0011.170.00
28.0011.410.0011.170.00
30.0011.410.0011.170.00
32.0011.410.0011.170.00
34.0011.410.0011.170.00
36.0011.410.0011.170.00
38.0011.410.0011.170.00
40.0011.410.0011.170.00
42.0011.410.0011.170.00
44.0011.410.0011.170.00
46.0011.410.0011.170.00
48.0011.410.0011.170.00
50.0011.410.0011.170.00
52.0011.410.0011.170.00
54.0011.410.0011.170.00
56.0011.410.0011.170.00
58.0011.410.0011.170.00
60.0011.410.0011.170.00
62.0011.410.0011.170.00
64.0011.410.0011.170.00
66.0011.410.0011.170.00
68.0011.410.0011.170.00
70.0011.410.0011.170.00
72.0011.410.0011.170.00
Page 425
Page 1047 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
R-F Rainfall=11.41" Printed 10/24/2025 Page 426
Summary for Subcatchment 37S: Roof Lot 8
Runoff = 0.51 cfs @ 12.09 hrs, Volume= 1,722 cf, Depth=11.17" Routed to Pond 38P : Subsurface Basin Lot 8
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 100 YR-F Rainfall=11.41"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
0.4 45 2.00 Direct Entry, Pipe Flow
Subcatchment 37S: Roof Lot 8
Page 1048 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 37S: Roof Lot 8
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.270.000.120.00
4.000.600.000.410.01
6.000.970.000.770.01
8.001.480.001.260.01
10.002.260.002.030.02
12.005.470.005.230.31
14.009.150.008.910.02
16.009.930.009.690.01
18.0010.440.0010.190.01
20.0010.810.0010.570.01
22.0011.140.0010.890.01
24.0011.410.0011.170.01
26.0011.410.0011.170.00
28.0011.410.0011.170.00
30.0011.410.0011.170.00
32.0011.410.0011.170.00
34.0011.410.0011.170.00
36.0011.410.0011.170.00
38.0011.410.0011.170.00
40.0011.410.0011.170.00
42.0011.410.0011.170.00
44.0011.410.0011.170.00
46.0011.410.0011.170.00
48.0011.410.0011.170.00
50.0011.410.0011.170.00
52.0011.410.0011.170.00
54.0011.410.0011.170.00
56.0011.410.0011.170.00
58.0011.410.0011.170.00
60.0011.410.0011.170.00
62.0011.410.0011.170.00
64.0011.410.0011.170.00
66.0011.410.0011.170.00
68.0011.410.0011.170.00
70.0011.410.0011.170.00
72.0011.410.0011.170.00
Page 427
Page 1049 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
YR-F Rainfall=11.41" Printed 10/24/2025 Page 428
Summary for Subcatchment 38S: Roof Lot 2
Runoff = 0.51 cfs @ 12.09 hrs, Volume= 1,722 cf, Depth=11.17" Routed to Pond 39P : Subsurface Basin Lot 2
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 100 YR-F Rainfall=11.41"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
0.4 45 2.00 Direct Entry, Pipe Flow
Subcatchment 38S: Roof Lot 2
Page 1050 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 38S: Roof Lot 2
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.270.000.120.00
4.000.600.000.410.01
6.000.970.000.770.01
8.001.480.001.260.01
10.002.260.002.030.02
12.005.470.005.230.31
14.009.150.008.910.02
16.009.930.009.690.01
18.0010.440.0010.190.01
20.0010.810.0010.570.01
22.0011.140.0010.890.01
24.0011.410.0011.170.01
26.0011.410.0011.170.00
28.0011.410.0011.170.00
30.0011.410.0011.170.00
32.0011.410.0011.170.00
34.0011.410.0011.170.00
36.0011.410.0011.170.00
38.0011.410.0011.170.00
40.0011.410.0011.170.00
42.0011.410.0011.170.00
44.0011.410.0011.170.00
46.0011.410.0011.170.00
48.0011.410.0011.170.00
50.0011.410.0011.170.00
52.0011.410.0011.170.00
54.0011.410.0011.170.00
56.0011.410.0011.170.00
58.0011.410.0011.170.00
60.0011.410.0011.170.00
62.0011.410.0011.170.00
64.0011.410.0011.170.00
66.0011.410.0011.170.00
68.0011.410.0011.170.00
70.0011.410.0011.170.00
72.0011.410.0011.170.00
Page 429
Page 1051 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
F Rainfall=11.41" printed 10/24/2025 Page 430
Summary for Subcatchment 40S: Roof Lot 9
Runoff = 0.51 cfs @ 12.09 hrs, Volume= 1,722 cf, Depth=11.17" Routed to Pond 41P : Subsurface Basin Lot 9
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 100 YR-F Rainfall=11.41"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
0.4 45 2.00 Direct Entry, Pipe Flow
Subcatchment 40S: Roof Lot 9
Page 1052 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 40S: Roof Lot 9
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.270.000.120.00
4.000.600.000.410.01
6.000.970.000.770.01
8.001.480.001.260.01
10.002.260.002.030.02
12.005.470.005.230.31
14.009.150.008.910.02
16.009.930.009.690.01
18.0010.440.0010.190.01
20.0010.810.0010.570.01
22.0011.140.0010.890.01
24.0011.410.0011.170.01
26.0011.410.0011.170.00
28.0011.410.0011.170.00
30.0011.410.0011.170.00
32.0011.410.0011.170.00
34.0011.410.0011.170.00
36.0011.410.0011.170.00
38.0011.410.0011.170.00
40.0011.410.0011.170.00
42.0011.410.0011.170.00
44.0011.410.0011.170.00
46.0011.410.0011.170.00
48.0011.410.0011.170.00
50.0011.410.0011.170.00
52.0011.410.0011.170.00
54.0011.410.0011.170.00
56.0011.410.0011.170.00
58.0011.410.0011.170.00
60.0011.410.0011.170.00
62.0011.410.0011.170.00
64.0011.410.0011.170.00
66.0011.410.0011.170.00
68.0011.410.0011.170.00
70.0011.410.0011.170.00
72.0011.410.0011.170.00
Page 431
Page 1053 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025
YR-F Rainfall=11.41" Printed 10/24/2025 Page 432
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 42S: Roof Lot 10
Runoff = 0.51 cfs @ 12.09 hrs, Volume= 1,722 cf, Depth=11.17" Routed to Pond 43P : Subsurface Basin Lot 10
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 100 YR-F Rainfall=11.41"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
2.00 Direct Entry, Pipe Flow
Subcatchment 42S: Roof Lot 10
Page 1054 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 42S: Roof Lot 10
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.270.000.120.00
4.000.600.000.410.01
6.000.970.000.770.01
8.001.480.001.260.01
10.002.260.002.030.02
12.005.470.005.230.31
14.009.150.008.910.02
16.009.930.009.690.01
18.0010.440.0010.190.01
20.0010.810.0010.570.01
22.0011.140.0010.890.01
24.0011.410.0011.170.01
26.0011.410.0011.170.00
28.0011.410.0011.170.00
30.0011.410.0011.170.00
32.0011.410.0011.170.00
34.0011.410.0011.170.00
36.0011.410.0011.170.00
38.0011.410.0011.170.00
40.0011.410.0011.170.00
42.0011.410.0011.170.00
44.0011.410.0011.170.00
46.0011.410.0011.170.00
48.0011.410.0011.170.00
50.0011.410.0011.170.00
52.0011.410.0011.170.00
54.0011.410.0011.170.00
56.0011.410.0011.170.00
58.0011.410.0011.170.00
60.0011.410.0011.170.00
62.0011.410.0011.170.00
64.0011.410.0011.170.00
66.0011.410.0011.170.00
68.0011.410.0011.170.00
70.0011.410.0011.170.00
72.0011.410.0011.170.00
Page 433
Page 1055 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025
YR-F Rainfall=11.41" Printed 10/24/2025 Page 434
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 44S: Roof Lot 3
Runoff = 0.51 cfs @ 12.09 hrs, Volume= 1,722 cf, Depth=11.17" Routed to Pond 46P : Subsurface Basin Lot 3
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 100 YR-F Rainfall=11.41"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
0.4 45 2.00 Direct Entry, Pipe Flow
Subcatchment 44S: Roof Lot 3
Page 1056 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025
YR-F Rainfall=11.41" Printed 10/24/2025 Page 435
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 44S: Roof Lot 3
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.270.000.120.00
4.000.600.000.410.01
6.000.970.000.770.01
8.001.480.001.260.01
10.002.260.002.030.02
12.005.470.005.230.31
14.009.150.008.910.02
16.009.930.009.690.01
18.0010.440.0010.190.01
20.0010.810.0010.570.01
22.0011.140.0010.890.01
24.0011.410.0011.170.01
26.0011.410.0011.170.00
28.0011.410.0011.170.00
30.0011.410.0011.170.00
32.0011.410.0011.170.00
34.0011.410.0011.170.00
36.0011.410.0011.170.00
38.0011.410.0011.170.00
40.0011.410.0011.170.00
42.0011.410.0011.170.00
44.0011.410.0011.170.00
46.0011.410.0011.170.00
48.0011.410.0011.170.00
50.0011.410.0011.170.00
52.0011.410.0011.170.00
54.0011.410.0011.170.00
56.0011.410.0011.170.00
58.0011.410.0011.170.00
60.0011.410.0011.170.00
62.0011.410.0011.170.00
64.0011.410.0011.170.00
66.0011.410.0011.170.00
68.0011.410.0011.170.00
70.0011.410.0011.170.00
72.0011.410.0011.170.00
Page 1057 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
R-F Rainfall=11.41" Printed 10/24/2025 Page 436
Summary for Subcatchment 48S: Roof Lot 4
Runoff = 0.51 cfs @ 12.09 hrs, Volume= 1,722 cf, Depth=11.17" Routed to Pond 50P : Subsurface Basin Lot 4
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 100 YR-F Rainfall=11.41"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)
0.4 45 2.00 Direct Entry, Pipe Flow
Subcatchment 48S: Roof Lot 4
Page 1058 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 48S: Roof Lot 4
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.270.000.120.00
4.000.600.000.410.01
6.000.970.000.770.01
8.001.480.001.260.01
10.002.260.002.030.02
12.005.470.005.230.31
14.009.150.008.910.02
16.009.930.009.690.01
18.0010.440.0010.190.01
20.0010.810.0010.570.01
22.0011.140.0010.890.01
24.0011.410.0011.170.01
26.0011.410.0011.170.00
28.0011.410.0011.170.00
30.0011.410.0011.170.00
32.0011.410.0011.170.00
34.0011.410.0011.170.00
36.0011.410.0011.170.00
38.0011.410.0011.170.00
40.0011.410.0011.170.00
42.0011.410.0011.170.00
44.0011.410.0011.170.00
46.0011.410.0011.170.00
48.0011.410.0011.170.00
50.0011.410.0011.170.00
52.0011.410.0011.170.00
54.0011.410.0011.170.00
56.0011.410.0011.170.00
58.0011.410.0011.170.00
60.0011.410.0011.170.00
62.0011.410.0011.170.00
64.0011.410.0011.170.00
66.0011.410.0011.170.00
68.0011.410.0011.170.00
70.0011.410.0011.170.00
72.0011.410.0011.170.00
Page 437
Page 1059 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
'R-F Rainfall=11.41" Printed 10/24/2025 Page 438
Summary for Subcatchment 51S: Roof Lot 6
Runoff = 0.51 cfs @ 12.09 hrs, Volume= 1,722 cf, Depth=11.17" Routed to Pond 52P : Subsurface Basin Lot 6
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 100 YR-F Rainfall=11.41"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
0.4 45 2.00 Direct Entry, Pipe Flow
Subcatchment 51S: Roof Lot 6
Page 1060 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 51S: Roof Lot 6
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.270.000.120.00
4.000.600.000.410.01
6.000.970.000.770.01
8.001.480.001.260.01
10.002.260.002.030.02
12.005.470.005.230.31
14.009.150.008.910.02
16.009.930.009.690.01
18.0010.440.0010.190.01
20.0010.810.0010.570.01
22.0011.140.0010.890.01
24.0011.410.0011.170.01
26.0011.410.0011.170.00
28.0011.410.0011.170.00
30.0011.410.0011.170.00
32.0011.410.0011.170.00
34.0011.410.0011.170.00
36.0011.410.0011.170.00
38.0011.410.0011.170.00
40.0011.410.0011.170.00
42.0011.410.0011.170.00
44.0011.410.0011.170.00
46.0011.410.0011.170.00
48.0011.410.0011.170.00
50.0011.410.0011.170.00
52.0011.410.0011.170.00
54.0011.410.0011.170.00
56.0011.410.0011.170.00
58.0011.410.0011.170.00
60.0011.410.0011.170.00
62.0011.410.0011.170.00
64.0011.410.0011.170.00
66.0011.410.0011.170.00
68.0011.410.0011.170.00
70.0011.410.0011.170.00
72.0011.410.0011.170.00
Page 439
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NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
R-F Rainfall=11.41" Printed 10/24/2025 Page 440
Summary for Subcatchment 55S: Roof Lot 7
Runoff = 0.51 cfs @ 12.09 hrs, Volume= Routed to Pond 56P : Subsurface Basin Lot 7 1,722 cf, Depth=11.17"
1,722 cf, Depth=11.17
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 100 YR-F Rainfall=11.41"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
0.4 45 2.00 Direct Entry, Pipe Flow
Subcatchment 55S: Roof Lot 7
Page 1062 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Subcatchment 55S: Roof Lot 7
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.270.000.120.00
4.000.600.000.410.01
6.000.970.000.770.01
8.001.480.001.260.01
10.002.260.002.030.02
12.005.470.005.230.31
14.009.150.008.910.02
16.009.930.009.690.01
18.0010.440.0010.190.01
20.0010.810.0010.570.01
22.0011.140.0010.890.01
24.0011.410.0011.170.01
26.0011.410.0011.170.00
28.0011.410.0011.170.00
30.0011.410.0011.170.00
32.0011.410.0011.170.00
34.0011.410.0011.170.00
36.0011.410.0011.170.00
38.0011.410.0011.170.00
40.0011.410.0011.170.00
42.0011.410.0011.170.00
44.0011.410.0011.170.00
46.0011.410.0011.170.00
48.0011.410.0011.170.00
50.0011.410.0011.170.00
52.0011.410.0011.170.00
54.0011.410.0011.170.00
56.0011.410.0011.170.00
58.0011.410.0011.170.00
60.0011.410.0011.170.00
62.0011.410.0011.170.00
64.0011.410.0011.170.00
66.0011.410.0011.170.00
68.0011.410.0011.170.00
70.0011.410.0011.170.00
72.0011.410.0011.170.00
Page 441
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NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025 utions LLC Page 442
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 37P: Subsurface Basin Lot 1
Inflow Area = 1,850 sf, 100.00% Impervious, Inflow Depth = 11.17" for 100 YR-F event Inflow = 0.51 cfs @ 12.09 hrs, Volume= 1,722 cf Outflow = 0.03 cfs @ 10.92 hrs, Volume= 1,722 cf, Atten= 94%, Lag= 0.0 min Discarded = 0.03 cfs @ 10.92 hrs, Volume= 1,722 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 93.14' @ 13.32 hrs Surf.Area= 0.013 ac Storage= 0.014 af Plug-Flow detention time= 132.8 min calculated for 1,722 cf (100% of inflow) Center-of-Mass det. time= 132.8 min (865.7 - 732.9)
VolumeInvertAvail.StorageStorage Description
#1A91.00'0.008 af10.06'W x 57.33'L x 2.17'H Field A
0.029 af Overall - 0.008 af Embedded = 0.020 af x 40.0% Voids
#2A91.33'0.006 afADS N-12 15" x 12 Inside #1 Inside = 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside = 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf Row Length Adjustment = -7.00' x 1.20 sf x 4 rows 8.72' Header x 1.20 sf x 2 = 20.9 cf Inside
0.014 af Total Available Storage
Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Discarded91.00'2.450 in/hr Exfiltration over Surface area
Discarded OutFlowMax=0.03 cfs @ 10.92 hrsHW=91.02' (Free Discharge)
1=Exfiltration (Exfiltration Controls 0.03 cfs)
Pond 37P: Subsurface Basin Lot 1 Exfiltration
Page 1064 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025 utions LLC Page 443
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LL
Pond 37P: Subsurface Basin Lot 1 - Chamber Wizard Field A
Chamber Model = ADS N-12 15" (ADS N-12ยฎ Pipe) Inside= 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside= 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf Row Length Adjustment= -7.00' x 1.20 sf x 4 rows 18.0" Wide + 10.9" Spacing = 28.9" C-C Row Spacing 3 Chambers/Row x 20.00' Long -7.00' Row Adjustment +1.50' Header x 2 = 56.00' Row Length +8.0" End Stone x 2 = 57.33' Base Length 4 Rows x 18.0" Wide + 10.9" Spacing x 3 + 8.0" Side Stone x 2 = 10.06' Base Width 4.0" Stone Base + 18.0" Chamber Height + 4.0" Stone Cover = 2.17' Field Height 12 Chambers x 24.0 cf -7.00' Row Adjustment x 1.20 sf x 4 Rows + 8.72' Header x 1.20 sf x 2 = 275.3 cf Chamber Storage 12 Chambers x 31.9 cf -7.00' Row Adjustment x 1.60 sf x 4 Rows + 8.72' Header x 1.60 sf x 2 = 366.2 cf Displacement 1,248.8 cf Field - 366.2 cf Chambers = 882.6 cf Stone x 40.0% Voids = 353.0 cf Stone Storage Chamber Storage + Stone Storage = 628.4 cf = 0.014 af Overall Storage Efficiency = 50.3% Overall System Size = 57.33' x 10.06' x 2.17' 12 Chambers 46.3 cy Field 32.7 cy Stone
โ˜โ˜โ˜
Page 1065 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025 utions LLC Page 444
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 37P: Subsurface Basin Lot 1
Pond 37P: Subsurface Basin Lot 1
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NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 445
Pond 37P: Subsurface Basin Lot 1
Page 1067 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 37P: Subsurface Basin Lot 1
Time (hours)Inflow (cfs)Storage (acre-feet)Elevation (feet)Discarded (cfs)
0.000.000.00091.000.00
2.000.000.00091.000.00
4.000.010.00091.000.01
6.000.010.00091.000.01
8.000.010.00091.000.01
10.000.020.00091.010.02
12.000.310.00691.960.03
14.000.020.01493.070.03
16.000.010.01192.570.03
18.000.010.00892.140.03
20.000.010.00491.660.03
22.000.010.00091.000.01
24.000.010.00091.000.01
26.000.000.00091.000.00
28.000.000.00091.000.00
30.000.000.00091.000.00
32.000.000.00091.000.00
34.000.000.00091.000.00
36.000.000.00091.000.00
38.000.000.00091.000.00
40.000.000.00091.000.00
42.000.000.00091.000.00
44.000.000.00091.000.00
46.000.000.00091.000.00
48.000.000.00091.000.00
50.000.000.00091.000.00
52.000.000.00091.000.00
54.000.000.00091.000.00
56.000.000.00091.000.00
58.000.000.00091.000.00
60.000.000.00091.000.00
62.000.000.00091.000.00
64.000.000.00091.000.00
66.000.000.00091.000.00
68.000.000.00091.000.00
70.000.000.00091.000.00
72.000.000.00091.000.00
Page 446
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NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025
Analysis - Proposed Conditions NOAA 24 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 37P: Subsurface Basin Lot 1
Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
91.000.0092.040.03
91.020.0392.060.03
91.040.0392.080.03
91.060.0392.100.03
91.080.0392.120.03
91.100.0392.140.03
91.120.0392.160.03
91.140.0392.180.03
91.160.0392.200.03
91.180.0392.220.03
91.200.0392.240.03
91.220.0392.260.03
91.240.0392.280.03
91.260.0392.300.03
91.280.0392.320.03
91.300.0392.340.03
91.320.0392.360.03
91.340.0392.380.03
91.360.0392.400.03
91.380.0392.420.03
91.400.0392.440.03
91.420.0392.460.03
91.440.0392.480.03
91.460.0392.500.03
91.480.0392.520.03
91.500.0392.540.03
91.520.0392.560.03
91.540.0392.580.03
91.560.0392.600.03
91.580.0392.620.03
91.600.0392.640.03
91.620.0392.660.03
91.640.0392.680.03
91.660.0392.700.03
91.680.0392.720.03
91.700.0392.740.03
91.720.0392.760.03
91.740.0392.780.03
91.760.0392.800.03
91.780.0392.820.03
91.800.0392.840.03
91.820.0392.860.03
91.840.0392.880.03
91.860.0392.900.03
91.880.0392.920.03
91.900.0392.940.03
91.920.0392.960.03
91.940.0392.980.03
91.960.0393.000.03
91.980.0393.020.03
92.000.0393.040.03
92.020.0393.060.03
Elevation (feet)Discarded (cfs)
93.080.03
93.100.03
93.120.03
93.140.03
93.160.03
F Rainfall=11.41" Printed 10/24/2025 Page 447
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025
Stage-Area-Storage for Pond 37P: Subsurface Basin Lot 1
Elevation (feet)Surface (acres)Storage (acre-feet)
91.000.0130.000
91.050.0130.000
91.100.0130.001
91.150.0130.001
91.200.0130.001
91.250.0130.001
91.300.0130.002
91.350.0130.002
91.400.0130.002
91.450.0130.002
91.500.0130.002
91.550.0130.003
91.600.0130.003
91.650.0130.004
91.700.0130.004
91.750.0130.004
91.800.0130.005
91.850.0130.005
91.900.0130.006
91.950.0130.006
92.000.0130.006
92.050.0130.007
92.100.0130.007
92.150.0130.008
92.200.0130.008
92.250.0130.009
92.300.0130.009
92.350.0130.010
92.400.0130.010
92.450.0130.010
92.500.0130.011
92.550.0130.011
92.600.0130.012
92.650.0130.012
92.700.0130.012
92.750.0130.012
92.800.0130.013
92.850.0130.013
92.900.0130.013
92.950.0130.013
93.000.0130.014
93.050.0130.014
93.100.0130.014
93.150.0130.014
Page 448
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NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025 utions LLC Page 449
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 38P: Subsurface Basin Lot 8
Inflow Area = 1,850 sf, 100.00% Impervious, Inflow Depth = 11.17" for 100 YR-F event Inflow = 0.51 cfs @ 12.09 hrs, Volume= 1,722 cf Outflow = 0.08 cfs @ 11.58 hrs, Volume= 1,722 cf, Atten= 84%, Lag= 0.0 min Discarded = 0.08 cfs @ 11.58 hrs, Volume= 1,722 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 96.01' @ 12.51 hrs Surf.Area= 0.008 ac Storage= 0.008 af Plug-Flow detention time= 21.4 min calculated for 1,722 cf (100% of inflow) Center-of-Mass det. time= 21.4 min (754.3 - 732.9)
VolumeInvertAvail.StorageStorage Description
#1A94.00'0.005 af7.65"W x 45.33"L x 2.17"H Field A
0.017 af Overall - 0.005 af Embedded = 0.012 af x 40.0% Voids
#2A94.33'0.004 afADS N-12 15" x 6 Inside #1 Inside = 14.8"W x 14.8"H => 1.20 sf x 20.00"L = 24.0 cf Outside = 18.0"W x 18.0"H => 1.60 sf x 20.00"L = 31.9 cf Row Length Adjustment= +1.00' x 1.20 sf x 3 rows 6.31' Header x 1.20 sf x 2 = 15.2 cf Inside
0.000 afTotal Available Storage
0.009 af Total Available Storage
Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Discarded94.00'10.000 in/hr Exfiltration over Surface area
Discarded OutFlowMax=0.08 cfs @ 11.58 hrsHW=94.02' (Free Discharge)
1=Exfiltration (Exfiltration Controls 0.08 cfs)
Pond 38P: Subsurface Basin Lot 8
Exfiltration
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NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025 utions LLC Page 450
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LL
Pond 38P: Subsurface Basin Lot 8 - Chamber Wizard Field A
Chamber Model = ADS N-12 15" (ADS N-12ยฎ Pipe) Inside= 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside= 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf Row Length Adjustment= +1.00' x 1.20 sf x 3 rows 18.0" Wide + 10.9" Spacing = 28.9" C-C Row Spacing 2 Chambers/Row x 20.00' Long +1.00' Row Adjustment +1.50' Header x 2 = 44.00' Row Length +8.0" End Stone x 2 = 45.33' Base Length 3 Rows x 18.0" Wide + 10.9" Spacing x 2 + 8.0" Side Stone x 2 = 7.65' Base Width 4.0" Stone Base + 18.0" Chamber Height + 4.0" Stone Cover = 2.17' Field Height 6 Chambers x 24.0 cf +1.00' Row Adjustment x 1.20 sf x 3 Rows + 6.31' Header x 1.20 sf x 2 = 162.8 cf Chamber Storage 6 Chambers x 31.9 cf +1.00' Row Adjustment x 1.60 sf x 3 Rows + 6.31' Header x 1.60 sf x 2 = 216.5 cf Displacement 751.0 cf Field - 216.5 cf Chambers = 534.5 cf Stone x 40.0% Voids = 213.8 cf Stone Storage Chamber Storage + Stone Storage = 376.6 cf = 0.009 af Overall Storage Efficiency = 50.1% Overall System Size = 45.33' x 7.65' x 2.17' 6 Chambers 27.8 cy Field 19.8 cy Stone
Page 1072 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025 utions LLC Page 451
Analysis - Proposed Conditions NOAA 24 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 38P: Subsurface Basin Lot 8
Pond 38P: Subsurface Basin Lot 8
Page 1073 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 452
Pond 38P: Subsurface Basin Lot 8
Stage-Area-Storage
0.000 0.001 0.001 0.002 0.002 0.003 0.003 0.004 0.004 0.005 0.005 0.006 0.006 0.007 0.007 0.008 0.009 Storage (acre-feet)
Surface Storage
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NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025
Analysis - Proposed Conditions NOAA 24 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 38P: Subsurface Basin Lot 8
Time (hours)Inflow (cfs)Storage (acre-feet)Elevation (feet)Discarded (cfs)
0.000.000.00094.000.00
2.000.000.00094.000.00
4.000.010.00094.000.01
6.000.010.00094.000.01
8.000.010.00094.000.01
10.000.020.00094.000.02
12.000.310.00394.840.08
14.000.020.00394.840.08
16.000.010.00094.000.01
18.000.010.00094.000.01
20.000.010.00094.000.01
22.000.010.00094.000.01
24.000.010.00094.000.01
26.000.000.00094.000.00
28.000.000.00094.000.00
30.000.000.00094.000.00
32.000.000.00094.000.00
34.000.000.00094.000.00
36.000.000.00094.000.00
38.000.000.00094.000.00
40.000.000.00094.000.00
42.000.000.00094.000.00
44.000.000.00094.000.00
46.000.000.00094.000.00
48.000.000.00094.000.00
50.000.000.00094.000.00
52.000.000.00094.000.00
54.000.000.00094.000.00
56.000.000.00094.000.00
58.000.000.00094.000.00
60.000.000.00094.000.00
62.000.000.00094.000.00
64.000.000.00094.000.00
66.000.000.00094.000.00
68.000.000.00094.000.00
70.000.000.00094.000.00
72.000.000.00094.000.00
Page 453
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NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025
YR-F Rainfall=11.41" Printed 10/24/2025 Page 454
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 38P: Subsurface Basin Lot 8
Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
94.000.0095.040.08
94.020.0895.060.08
94.040.0895.080.08
94.060.0895.100.08
94.080.0895.120.08
94.100.0895.140.08
94.120.0895.160.08
94.140.0895.180.08
94.160.0895.200.08
94.180.0895.220.08
94.200.0895.240.08
94.220.0895.260.08
94.240.0895.280.08
94.260.0895.300.08
94.280.0895.320.08
94.300.0895.340.08
94.320.0895.360.08
94.340.0895.380.08
94.360.0895.400.08
94.380.0895.420.08
94.400.0895.440.08
94.420.0895.460.08
94.440.0895.480.08
94.460.0895.500.08
94.480.0895.520.08
94.500.0895.540.08
94.520.0895.560.08
94.540.0895.580.08
94.560.0895.600.08
94.580.0895.620.08
94.600.0895.640.08
94.620.0895.660.08
94.640.0895.680.08
94.660.0895.700.08
94.680.0895.720.08
94.700.0895.740.08
94.720.0895.760.08
94.740.0895.780.08
94.760.0895.800.08
94.780.0895.820.08
94.800.0895.840.08
94.820.0895.860.08
94.840.0895.880.08
94.860.0895.900.08
94.880.0895.920.08
94.900.0895.940.08
94.920.0895.960.08
94.940.0895.980.08
94.960.0896.000.08
94.980.0896.020.08
95.000.0896.040.08
95.020.0896.060.08
Elevation (feet)Discarded (cfs)
96.080.08
96.100.08
96.120.08
96.140.08
96.160.08
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Analysis - Proposed Conditions NOAA 24 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025
Stage-Area-Storage for Pond 38P: Subsurface Basin Lot 8
Elevation (feet)Surface (acres)Storage (acre-feet)
94.000.0080.000
94.050.0080.000
94.100.0080.000
94.150.0080.000
94.200.0080.001
94.250.0080.001
94.300.0080.001
94.350.0080.001
94.400.0080.001
94.450.0080.001
94.500.0080.002
94.550.0080.002
94.600.0080.002
94.650.0080.002
94.700.0080.002
94.750.0080.003
94.800.0080.003
94.850.0080.003
94.900.0080.003
94.950.0080.004
95.000.0080.004
95.050.0080.004
95.100.0080.004
95.150.0080.005
95.200.0080.005
95.250.0080.005
95.300.0080.005
95.350.0080.006
95.400.0080.006
95.450.0080.006
95.500.0080.006
95.550.0080.007
95.600.0080.007
95.650.0080.007
95.700.0080.007
95.750.0080.007
95.800.0080.007
95.850.0080.008
95.900.0080.008
95.950.0080.008
96.000.0080.008
96.050.0080.008
96.100.0080.008
96.150.0080.009
Page 455
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NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025 utions LLC Page 456
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 39P: Subsurface Basin Lot 2
Inflow Area = 1,850 sf, 100.00% Impervious, Inflow Depth = 11.17" for 100 YR-F event Inflow = 0.51 cfs @ 12.09 hrs, Volume= 1,722 cf Outflow = 0.07 cfs @ 11.54 hrs, Volume= 1,722 cf, Atten= 87%, Lag= 0.0 min Discarded = 0.07 cfs @ 11.54 hrs, Volume= 1,722 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 95.08' @ 12.52 hrs Surf.Area= 0.009 ac Storage= 0.009 af Plug-Flow detention time= 30.1 min calculated for 1,722 cf (100% of inflow) Center-of-Mass det. time= 30.1 min (763.1 - 732.9)
VolumeInvertAvail.StorageStorage Description
#1A93.00'0.005 af7.65"W x 49.33"L x 2.17"H Field A
0.019 af Overall - 0.005 af Embedded = 0.013 af x 40.0% Voids
#2A93.33'0.004 afADS N-12 15" x 6 Inside #1 Inside = 14.8"W x 14.8"H => 1.20 sf x 20.00"L = 24.0 cf Outside = 18.0"W x 18.0"H => 1.60 sf x 20.00"L = 31.9 cf Row Length Adjustment= +5.00' x 1.20 sf x 3 rows 6.31' Header x 1.20 sf x 2 = 15.2 cf Inside
0.009 af Total Available Storage
Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Discarded93.00'7.850 in/hr Exfiltration over Surface area
Discarded OutFlowMax=0.07 cfs @ 11.54 hrsHW=93.02' (Free Discharge)
1=Exfiltration (Exfiltration Controls 0.07 cfs)
Pond 39P: Subsurface Basin Lot 2 Exfiltration
Page 1078 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025 utions LLC Page 457
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions Ltd
Pond 39P: Subsurface Basin Lot 2 - Chamber Wizard Field A
Chamber Model = ADS N-12 15" (ADS N-12ยฎ Pipe) Inside= 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside= 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf Row Length Adjustment= +5.00' x 1.20 sf x 3 rows 18.0" Wide + 10.9" Spacing = 28.9" C-C Row Spacing 2 Chambers/Row x 20.00' Long +5.00' Row Adjustment +1.50' Header x 2 = 48.00' Row Length +8.0" End Stone x 2 = 49.33' Base Length 3 Rows x 18.0" Wide + 10.9" Spacing x 2 + 8.0" Side Stone x 2 = 7.65' Base Width 4.0" Stone Base + 18.0" Chamber Height + 4.0" Stone Cover = 2.17' Field Height 6 Chambers x 24.0 cf +5.00' Row Adjustment x 1.20 sf x 3 Rows + 6.31' Header x 1.20 sf x 2 = 177.2 cf Chamber Storage 6 Chambers x 31.9 cf +5.00' Row Adjustment x 1.60 sf x 3 Rows + 6.31' Header x 1.60 sf x 2 = 235.7 cf Displacement 817.3 cf Field - 235.7 cf Chambers = 581.6 cf Stone x 40.0% Voids = 232.6 cf Stone Storage Chamber Storage + Stone Storage = 409.8 cf = 0.009 af Overall Storage Efficiency = 50.1% Overall System Size = 49.33' x 7.65' x 2.17' 6 Chambers 30.3 cy Field 21.5 cy Stone
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NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025 utions LLC Page 458
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 39P: Subsurface Basin Lot 2
Pond 39P: Subsurface Basin Lot 2
Page 1080 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 459
Pond 39P: Subsurface Basin Lot 2
Stage-Area-Storage
0 0.000 0.001 0.001 0.002 0.002 0.003 0.003 0.004 0.004 0.005 0.005 0.006 0.006 0.007 0.007 0.008 0.009 0.009 Storage (acre-feet)
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NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 39P: Subsurface Basin Lot 2
Time (hours)Inflow (cfs)Storage (acre-feet)Elevation (feet)Discarded (cfs)
0.000.000.00093.000.00
2.000.000.00093.000.00
4.000.010.00093.000.01
6.000.010.00093.000.01
8.000.010.00093.000.01
10.000.020.00093.000.02
12.000.310.00493.880.07
14.000.020.00594.210.07
16.000.010.00093.000.01
18.000.010.00093.000.01
20.000.010.00093.000.01
22.000.010.00093.000.01
24.000.010.00093.000.01
26.000.000.00093.000.00
28.000.000.00093.000.00
30.000.000.00093.000.00
32.000.000.00093.000.00
34.000.000.00093.000.00
36.000.000.00093.000.00
38.000.000.00093.000.00
40.000.000.00093.000.00
42.000.000.00093.000.00
44.000.000.00093.000.00
46.000.000.00093.000.00
48.000.000.00093.000.00
50.000.000.00093.000.00
52.000.000.00093.000.00
54.000.000.00093.000.00
56.000.000.00093.000.00
58.000.000.00093.000.00
60.000.000.00093.000.00
62.000.000.00093.000.00
64.000.000.00093.000.00
66.000.000.00093.000.00
68.000.000.00093.000.00
70.000.000.00093.000.00
72.000.000.00093.000.00
Page 460
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NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 39P: Subsurface Basin Lot 2
Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
93.000.0094.040.07
93.020.0794.060.07
93.040.0794.080.07
93.060.0794.100.07
93.080.0794.120.07
93.100.0794.140.07
93.120.0794.160.07
93.140.0794.180.07
93.160.0794.200.07
93.180.0794.220.07
93.200.0794.240.07
93.220.0794.260.07
93.240.0794.280.07
93.260.0794.300.07
93.280.0794.320.07
93.300.0794.340.07
93.320.0794.360.07
93.340.0794.380.07
93.360.0794.400.07
93.380.0794.420.07
93.400.0794.440.07
93.420.0794.460.07
93.440.0794.480.07
93.460.0794.500.07
93.480.0794.520.07
93.500.0794.540.07
93.520.0794.560.07
93.540.0794.580.07
93.560.0794.600.07
93.580.0794.620.07
93.600.0794.640.07
93.620.0794.660.07
93.640.0794.680.07
93.660.0794.700.07
93.680.0794.720.07
93.700.0794.740.07
93.720.0794.760.07
93.740.0794.780.07
93.760.0794.800.07
93.780.0794.820.07
93.800.0794.840.07
93.820.0794.860.07
93.840.0794.880.07
93.860.0794.900.07
93.880.0794.920.07
93.900.0794.940.07
93.920.0794.960.07
93.940.0794.980.07
93.960.0795.000.07
93.980.0795.020.07
94.000.0795.040.07
94.020.0795.060.07
Elevation (feet)Discarded (cfs)
95.080.07
95.100.07
95.120.07
95.140.07
95.160.07
Page 461
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025
Stage-Area-Storage for Pond 39P: Subsurface Basin Lot 2
Elevation (feet)Surface (acres)Storage (acre-feet)
93.000.0090.000
93.050.0090.000
93.100.0090.000
93.150.0090.001
93.200.0090.001
93.250.0090.001
93.300.0090.001
93.350.0090.001
93.400.0090.001
93.450.0090.001
93.500.0090.002
93.550.0090.002
93.600.0090.002
93.650.0090.002
93.700.0090.003
93.750.0090.003
93.800.0090.003
93.850.0090.003
93.900.0090.004
93.950.0090.004
94.000.0090.004
94.050.0090.005
94.100.0090.005
94.150.0090.005
94.200.0090.005
94.250.0090.006
94.300.0090.006
94.350.0090.006
94.400.0090.007
94.450.0090.007
94.500.0090.007
94.550.0090.007
94.600.0090.008
94.650.0090.008
94.700.0090.008
94.750.0090.008
94.800.0090.008
94.850.0090.008
94.900.0090.008
94.950.0090.009
95.000.0090.009
95.050.0090.009
95.100.0090.009
95.150.0090.009
Page 462
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NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025 utions LLC Page 463
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 41P: Subsurface Basin Lot 9
Inflow Area = 1,850 sf, 100.00% Impervious, Inflow Depth = 11.17" for 100 YR-F event Inflow = 0.51 cfs @ 12.09 hrs, Volume= 1,722 cf Outflow = 0.07 cfs @ 11.54 hrs, Volume= 1,722 cf, Atten= 87%, Lag= 0.0 min Discarded = 0.07 cfs @ 11.54 hrs, Volume= 1,722 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 95.14' @ 12.52 hrs Surf.Area= 0.008 ac Storage= 0.009 af Plug-Flow detention time= 30.2 min calculated for 1,722 cf (100% of inflow) Center-of-Mass det. time= 30.2 min (763.2 - 732.9)
VolumeInvertAvail.StorageStorage Description
#1A93.00'0.005 af7.65"W x 48.33"L x 2.17"H Field A
0.018 af Overall - 0.005 af Embedded = 0.013 af x 40.0% Voids
#2A93.33'0.004 afADS N-12 15" x 6 Inside #1 Inside = 14.8"W x 14.8"H => 1.20 sf x 20.00"L = 24.0 cf Outside = 18.0"W x 18.0"H => 1.60 sf x 20.00"L = 31.9 cf Row Length Adjustment= +4.00' x 1.20 sf x 3 rows 6.31' Header x 1.20 sf x 2 = 15.2 cf Inside
0.000 afTotal Available Storage
0.009 af Total Available Storage
Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Discarded93.00'8.000 in/hr Exfiltration over Surface area
Discarded OutFlowMax=0.07 cfs @ 11.54 hrsHW=93.02' (Free Discharge)
1=Exfiltration (Exfiltration Controls 0.07 cfs)
Pond 41P: Subsurface Basin Lot 9 Exfiltration
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NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025 utions LLC Page 464
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions Ltd
Pond 41P: Subsurface Basin Lot 9 - Chamber Wizard Field A
Chamber Model = ADS N-12 15" (ADS N-12ยฎ Pipe) Inside= 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside= 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf Row Length Adjustment= +4.00' x 1.20 sf x 3 rows 18.0" Wide + 10.9" Spacing = 28.9" C-C Row Spacing 2 Chambers/Row x 20.00' Long +4.00' Row Adjustment +1.50' Header x 2 = 47.00' Row Length +8.0" End Stone x 2 = 48.33' Base Length 3 Rows x 18.0" Wide + 10.9" Spacing x 2 + 8.0" Side Stone x 2 = 7.65' Base Width 4.0" Stone Base + 18.0" Chamber Height + 4.0" Stone Cover = 2.17' Field Height 6 Chambers x 24.0 cf +4.00' Row Adjustment x 1.20 sf x 3 Rows + 6.31' Header x 1.20 sf x 2 = 173.6 cf Chamber Storage 6 Chambers x 31.9 cf +4.00' Row Adjustment x 1.60 sf x 3 Rows + 6.31' Header x 1.60 sf x 2 = 230.9 cf Displacement 800.7 cf Field - 230.9 cf Chambers = 569.8 cf Stone x 40.0% Voids = 227.9 cf Stone Storage Chamber Storage + Stone Storage = 401.5 cf = 0.009 af Overall Storage Efficiency = 50.1% Overall System Size = 48.33' x 7.65' x 2.17' 6 Chambers 29.7 cy Field 21.1 cy Stone
โ—‹โ—‹โ—‹
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NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025 utions LLC Page 465
Analysis - Proposed Conditions NOAA 24-h Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 41P: Subsurface Basin Lot 9
Pond 41P: Subsurface Basin Lot 9
Page 1087 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025 utions LLC Page 466
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 41P: Subsurface Basin Lot 9
Page 1088 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025
Analysis - Proposed Conditions NOAA 24 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 41P: Subsurface Basin Lot 9
Time (hours)Inflow (cfs)Storage (acre-feet)Elevation (feet)Discarded (cfs)
0.000.000.00093.000.00
2.000.000.00093.000.00
4.000.010.00093.000.01
6.000.010.00093.000.01
8.000.010.00093.000.01
10.000.020.00093.000.02
12.000.310.00493.890.07
14.000.020.00594.240.07
16.000.010.00093.000.01
18.000.010.00093.000.01
20.000.010.00093.000.01
22.000.010.00093.000.01
24.000.010.00093.000.01
26.000.000.00093.000.00
28.000.000.00093.000.00
30.000.000.00093.000.00
32.000.000.00093.000.00
34.000.000.00093.000.00
36.000.000.00093.000.00
38.000.000.00093.000.00
40.000.000.00093.000.00
42.000.000.00093.000.00
44.000.000.00093.000.00
46.000.000.00093.000.00
48.000.000.00093.000.00
50.000.000.00093.000.00
52.000.000.00093.000.00
54.000.000.00093.000.00
56.000.000.00093.000.00
58.000.000.00093.000.00
60.000.000.00093.000.00
62.000.000.00093.000.00
64.000.000.00093.000.00
66.000.000.00093.000.00
68.000.000.00093.000.00
70.000.000.00093.000.00
72.000.000.00093.000.00
Page 467
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NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 41P: Subsurface Basin Lot 9
Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
93.000.0094.040.07
93.020.0794.060.07
93.040.0794.080.07
93.060.0794.100.07
93.080.0794.120.07
93.100.0794.140.07
93.120.0794.160.07
93.140.0794.180.07
93.160.0794.200.07
93.180.0794.220.07
93.200.0794.240.07
93.220.0794.260.07
93.240.0794.280.07
93.260.0794.300.07
93.280.0794.320.07
93.300.0794.340.07
93.320.0794.360.07
93.340.0794.380.07
93.360.0794.400.07
93.380.0794.420.07
93.400.0794.440.07
93.420.0794.460.07
93.440.0794.480.07
93.460.0794.500.07
93.480.0794.520.07
93.500.0794.540.07
93.520.0794.560.07
93.540.0794.580.07
93.560.0794.600.07
93.580.0794.620.07
93.600.0794.640.07
93.620.0794.660.07
93.640.0794.680.07
93.660.0794.700.07
93.680.0794.720.07
93.700.0794.740.07
93.720.0794.760.07
93.740.0794.780.07
93.760.0794.800.07
93.780.0794.820.07
93.800.0794.840.07
93.820.0794.860.07
93.840.0794.880.07
93.860.0794.900.07
93.880.0794.920.07
93.900.0794.940.07
93.920.0794.960.07
93.940.0794.980.07
93.960.0795.000.07
93.980.0795.020.07
94.000.0795.040.07
94.020.0795.060.07
Elevation (feet)Discarded (cfs)
95.080.07
95.100.07
95.120.07
95.140.07
95.160.07
F Rainfall=11.41" rinted 10/24/2025 Page 468
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025
Stage-Area-Storage for Pond 41P: Subsurface Basin Lot 9
Elevation (feet)Surface (acres)Storage (acre-feet)
93.000.0080.000
93.050.0080.000
93.100.0080.000
93.150.0080.001
93.200.0080.001
93.250.0080.001
93.300.0080.001
93.350.0080.001
93.400.0080.001
93.450.0080.001
93.500.0080.002
93.550.0080.002
93.600.0080.002
93.650.0080.002
93.700.0080.003
93.750.0080.003
93.800.0080.003
93.850.0080.003
93.900.0080.004
93.950.0080.004
94.000.0080.004
94.050.0080.004
94.100.0080.005
94.150.0080.005
94.200.0080.005
94.250.0080.006
94.300.0080.006
94.350.0080.006
94.400.0080.006
94.450.0080.007
94.500.0080.007
94.550.0080.007
94.600.0080.007
94.650.0080.008
94.700.0080.008
94.750.0080.008
94.800.0080.008
94.850.0080.008
94.900.0080.008
94.950.0080.008
95.000.0080.009
95.050.0080.009
95.100.0080.009
95.150.0080.009
Page 469
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NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025 utions LLC Page 470
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 43P: Subsurface Basin Lot 10
Inflow Area = 1,850 sf, 100.00% Impervious, Inflow Depth = 11.17" for 100 YR-F event Inflow = 0.51 cfs @ 12.09 hrs, Volume= 1,722 cf Outflow = 0.08 cfs @ 11.58 hrs, Volume= 1,722 cf, Atten=84%, Lag=0.0 min Discarded = 0.08 cfs @ 11.58 hrs, Volume= 1,722 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 94.01' @ 12.51 hrs Surf.Area= 0.008 ac Storage= 0.008 af Plug-Flow detention time= 21.4 min calculated for 1,722 cf (100% of inflow) Center-of-Mass det. time= 21.4 min (754.3 - 732.9)
VolumeInvertAvail.StorageStorage Description
#1A92.00'0.005 af7.65"W x 45.33"L x 2.17"H Field A
0.017 af Overall - 0.005 af Embedded = 0.012 af x 40.0% Voids
#2A92.33'0.004 afADS N-12 15" x 6 Inside #1 Inside = 14.8"W x 14.8"H => 1.20 sf x 20.00"L = 24.0 cf Outside = 18.0"W x 18.0"H => 1.60 sf x 20.00"L = 31.9 cf Row Length Adjustment= +1.00' x 1.20 sf x 3 rows 6.31' Header x 1.20 sf x 2 = 15.2 cf Inside
0.000 afTotal Available Storage
0.009 af Total Available Storage
Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Discarded92.00'10.000 in/hr Exfiltration over Surface area
Discarded OutFlowMax=0.08 cfs @ 11.58 hrsHW=92.02' (Free Discharge)
1=Exfiltration (Exfiltration Controls 0.08 cfs)
Pond 43P: Subsurface Basin Lot 10
Exfiltration
Page 1092 Download HTML
Pond 43P: Subsurface Basin Lot 10 - Chamber Wizard Field A
Chamber Model = ADS N-12 15" (ADS N-12ยฎ Pipe) Inside= 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside= 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf Row Length Adjustment= +1.00' x 1.20 sf x 3 rows 18.0" Wide + 10.9" Spacing = 28.9" C-C Row Spacing 2 Chambers/Row x 20.00' Long +1.00' Row Adjustment +1.50' Header x 2 = 44.00' Row Length +8.0" End Stone x 2 = 45.33' Base Length 3 Rows x 18.0" Wide + 10.9" Spacing x 2 + 8.0" Side Stone x 2 = 7.65' Base Width 4.0" Stone Base + 18.0" Chamber Height + 4.0" Stone Cover = 2.17' Field Height 6 Chambers x 24.0 cf +1.00' Row Adjustment x 1.20 sf x 3 Rows + 6.31' Header x 1.20 sf x 2 = 162.8 cf Chamber Storage 6 Chambers x 31.9 cf +1.00' Row Adjustment x 1.60 sf x 3 Rows + 6.31' Header x 1.60 sf x 2 = 216.5 cf Displacement 751.0 cf Field - 216.5 cf Chambers = 534.5 cf Stone x 40.0% Voids = 213.8 cf Stone Storage Chamber Storage + Stone Storage = 376.6 cf = 0.009 af Overall Storage Efficiency = 50.1% Overall System Size = 45.33' x 7.65' x 2.17' 6 Chambers 27.8 cy Field 19.8 cy Stone
Page 1093 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025 utions LLC Page 472
Analysis - Proposed Conditions NOAA 24-h Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 43P: Subsurface Basin Lot 10
Pond 43P: Subsurface Basin Lot 10
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NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 473
Pond 43P: Subsurface Basin Lot 10
Stage-Area-Storage
0.000 0.001 0.001 0.002 0.002 0.003 0.003 0.004 0.004 0.005 0.005 0.006 0.006 0.007 0.007 0.008 0.009 Storage (acre-feet)
Surface Storage
Page 1095 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025
Analysis - Proposed Conditions NOAA 24 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 43P: Subsurface Basin Lot 10
Time (hours)Inflow (cfs)Storage (acre-feet)Elevation (feet)Discarded (cfs)
0.000.000.00092.000.00
2.000.000.00092.000.00
4.000.010.00092.000.01
6.000.010.00092.000.01
8.000.010.00092.000.01
10.000.020.00092.000.02
12.000.310.00392.840.08
14.000.020.00392.840.08
16.000.010.00092.000.01
18.000.010.00092.000.01
20.000.010.00092.000.01
22.000.010.00092.000.01
24.000.010.00092.000.01
26.000.000.00092.000.00
28.000.000.00092.000.00
30.000.000.00092.000.00
32.000.000.00092.000.00
34.000.000.00092.000.00
36.000.000.00092.000.00
38.000.000.00092.000.00
40.000.000.00092.000.00
42.000.000.00092.000.00
44.000.000.00092.000.00
46.000.000.00092.000.00
48.000.000.00092.000.00
50.000.000.00092.000.00
52.000.000.00092.000.00
54.000.000.00092.000.00
56.000.000.00092.000.00
58.000.000.00092.000.00
60.000.000.00092.000.00
62.000.000.00092.000.00
64.000.000.00092.000.00
66.000.000.00092.000.00
68.000.000.00092.000.00
70.000.000.00092.000.00
72.000.000.00092.000.00
Page 474
Page 1096 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 43P: Subsurface Basin Lot 10
Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
92.000.0093.040.08
92.020.0893.060.08
92.040.0893.080.08
92.060.0893.100.08
92.080.0893.120.08
92.100.0893.140.08
92.120.0893.160.08
92.140.0893.180.08
92.160.0893.200.08
92.180.0893.220.08
92.200.0893.240.08
92.220.0893.260.08
92.240.0893.280.08
92.260.0893.300.08
92.280.0893.320.08
92.300.0893.340.08
92.320.0893.360.08
92.340.0893.380.08
92.360.0893.400.08
92.380.0893.420.08
92.400.0893.440.08
92.420.0893.460.08
92.440.0893.480.08
92.460.0893.500.08
92.480.0893.520.08
92.500.0893.540.08
92.520.0893.560.08
92.540.0893.580.08
92.560.0893.600.08
92.580.0893.620.08
92.600.0893.640.08
92.620.0893.660.08
92.640.0893.680.08
92.660.0893.700.08
92.680.0893.720.08
92.700.0893.740.08
92.720.0893.760.08
92.740.0893.780.08
92.760.0893.800.08
92.780.0893.820.08
92.800.0893.840.08
92.820.0893.860.08
92.840.0893.880.08
92.860.0893.900.08
92.880.0893.920.08
92.900.0893.940.08
92.920.0893.960.08
92.940.0893.980.08
92.960.0894.000.08
92.980.0894.020.08
93.000.0894.040.08
93.020.0894.060.08
Elevation (feet)Discarded (cfs)
94.080.08
94.100.08
94.120.08
94.140.08
94.160.08
Page 475
Page 1097 Download HTML
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025
Stage-Area-Storage for Pond 43P: Subsurface Basin Lot 10
Elevation (feet)Surface (acres)Storage (acre-feet)
92.000.0080.000
92.050.0080.000
92.100.0080.000
92.150.0080.000
92.200.0080.001
92.250.0080.001
92.300.0080.001
92.350.0080.001
92.400.0080.001
92.450.0080.001
92.500.0080.002
92.550.0080.002
92.600.0080.002
92.650.0080.002
92.700.0080.002
92.750.0080.003
92.800.0080.003
92.850.0080.003
92.900.0080.003
92.950.0080.004
93.000.0080.004
93.050.0080.004
93.100.0080.004
93.150.0080.005
93.200.0080.005
93.250.0080.005
93.300.0080.005
93.350.0080.006
93.400.0080.006
93.450.0080.006
93.500.0080.006
93.550.0080.007
93.600.0080.007
93.650.0080.007
93.700.0080.007
93.750.0080.007
93.800.0080.007
93.850.0080.008
93.900.0080.008
93.950.0080.008
94.000.0080.008
94.050.0080.008
94.100.0080.008
94.150.0080.009
Page 476
Page 1098 Download HTML
Summary for Pond 46P: Subsurface Basin Lot 3
Inflow Area = 1,850 sf,100.00% Impervious, Inflow Depth = 11.17" for 100 YR-F event Inflow = 0.51 cfs @ 12.09 hrs, Volume= 1,722 cf Outflow = 0.05 cfs @ 11.24 hrs, Volume= 1,722 cf, Atten= 91%, Lag= 0.0 min Discarded = 0.05 cfs @ 11.24 hrs, Volume= 1,722 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 95.06' @ 12.92 hrs Surf.Area= 0.011 ac Storage= 0.012 af Plug-Flow detention time= 68.3 min calculated for 1,722 cf (100% of inflow) Center-of-Mass det. time= 68.3 min (801.2 - 732.9)
VolumeInvertAvail.StorageStorage Description
#1A93.00'0.007 af7.65"W x 64.33"L x 2.17"H Field A 0.024 af Overall - 0.007 af Embedded = 0.017 af x 40.0% Voids
#2A93.33'0.005 afADS N-12 15" x 9 Inside #1 Inside = 14.8"W x 14.8"H => 1.20 sf x 20.00"L = 24.0 cf Outside = 18.0"W x 18.0"H => 1.60 sf x 20.00"L = 31.9 cf 9 Chambers in 3 Rows 6.31' Header x 1.20 sf x 2 = 15.2 cf Inside
0.012 cfTotal Available Storage
0.012 af Total Available Storage
Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Discarded93.00'4.050 in/hr Exfiltration over Surface area
Discarded OutFlowMax=0.05 cfs @ 11.24 hrsHW=93.02' (Free Discharge)
1=Exfiltration (Exfiltration Controls 0.05 cfs)
Pond 46P: Subsurface Basin Lot 3 Exfiltration
Page 1099 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025 utions LLC Page 478
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LL
Pond 46P: Subsurface Basin Lot 3 - Chamber Wizard Field A
Chamber Model = ADS N-12 15" (ADS N-12ยฎ Pipe) Inside= 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside= 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf 18.0" Wide + 10.9" Spacing = 28.9" C-C Row Spacing 3 Chambers/Row x 20.00' Long +1.50' Header x 2 = 63.00' Row Length +8.0" End Stone x 2 = 64.33' Base Length 3 Rows x 18.0" Wide + 10.9" Spacing x 2 + 8.0" Side Stone x 2 = 7.65' Base Width 4.0" Stone Base + 18.0" Chamber Height + 4.0" Stone Cover = 2.17' Field Height 9 Chambers x 24.0 cf + 6.31' Header x 1.20 sf x 2 = 231.2 cf Chamber Storage 9 Chambers x 31.9 cf + 6.31' Header x 1.60 sf x 2 = 307.5 cf Displacement 1,065.8 cf Field - 307.5 cf Chambers = 758.3 cf Stone x 40.0% Voids = 303.3 cf Stone Storage Chamber Storage + Stone Storage = 534.5 cf = 0.012 af Overall Storage Efficiency = 50.1% Overall System Size = 64.33' x 7.65' x 2.17' 9 Chambers 39.5 cy Field 28.1 cy Stone
Page 1100 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025 utions LLC Page 479
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 46P: Subsurface Basin Lot 3
Pond 46P: Subsurface Basin Lot 3
Stage-Discharge
Page 1101 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025 utions LLC Page 480
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 480
Pond 46P: Subsurface Basin Lot 3
Page 1102 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 46P: Subsurface Basin Lot 3
Time (hours)Inflow (cfs)Storage (acre-feet)Elevation (feet)Discarded (cfs)
0.000.000.00093.000.00
2.000.000.00093.000.00
4.000.010.00093.000.01
6.000.010.00093.000.01
8.000.010.00093.000.01
10.000.020.00093.000.02
12.000.310.00593.910.05
14.000.020.01094.760.05
16.000.010.00694.020.05
18.000.010.00093.000.01
20.000.010.00093.000.01
22.000.010.00093.000.01
24.000.010.00093.000.01
26.000.000.00093.000.00
28.000.000.00093.000.00
30.000.000.00093.000.00
32.000.000.00093.000.00
34.000.000.00093.000.00
36.000.000.00093.000.00
38.000.000.00093.000.00
40.000.000.00093.000.00
42.000.000.00093.000.00
44.000.000.00093.000.00
46.000.000.00093.000.00
48.000.000.00093.000.00
50.000.000.00093.000.00
52.000.000.00093.000.00
54.000.000.00093.000.00
56.000.000.00093.000.00
58.000.000.00093.000.00
60.000.000.00093.000.00
62.000.000.00093.000.00
64.000.000.00093.000.00
66.000.000.00093.000.00
68.000.000.00093.000.00
70.000.000.00093.000.00
72.000.000.00093.000.00
Page 481
Page 1103 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025
YR-F Rainfall=11.41" Printed 10/24/2025 Page 482
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 46P: Subsurface Basin Lot 3
Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
93.000.0094.040.05
93.020.0594.060.05
93.040.0594.080.05
93.060.0594.100.05
93.080.0594.120.05
93.100.0594.140.05
93.120.0594.160.05
93.140.0594.180.05
93.160.0594.200.05
93.180.0594.220.05
93.200.0594.240.05
93.220.0594.260.05
93.240.0594.280.05
93.260.0594.300.05
93.280.0594.320.05
93.300.0594.340.05
93.320.0594.360.05
93.340.0594.380.05
93.360.0594.400.05
93.380.0594.420.05
93.400.0594.440.05
93.420.0594.460.05
93.440.0594.480.05
93.460.0594.500.05
93.480.0594.520.05
93.500.0594.540.05
93.520.0594.560.05
93.540.0594.580.05
93.560.0594.600.05
93.580.0594.620.05
93.600.0594.640.05
93.620.0594.660.05
93.640.0594.680.05
93.660.0594.700.05
93.680.0594.720.05
93.700.0594.740.05
93.720.0594.760.05
93.740.0594.780.05
93.760.0594.800.05
93.780.0594.820.05
93.800.0594.840.05
93.820.0594.860.05
93.840.0594.880.05
93.860.0594.900.05
93.880.0594.920.05
93.900.0594.940.05
93.920.0594.960.05
93.940.0594.980.05
93.960.0595.000.05
93.980.0595.020.05
94.000.0595.040.05
94.020.0595.060.05
Elevation (feet)Discarded (cfs)
95.080.05
95.100.05
95.120.05
95.140.05
95.160.05
Page 1104 Download HTML
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025
Stage-Area-Storage for Pond 46P: Subsurface Basin Lot 3
Elevation (feet)Surface (acres)Storage (acre-feet)
93.000.0110.000
93.050.0110.000
93.100.0110.000
93.150.0110.001
93.200.0110.001
93.250.0110.001
93.300.0110.001
93.350.0110.002
93.400.0110.002
93.450.0110.002
93.500.0110.002
93.550.0110.002
93.600.0110.003
93.650.0110.003
93.700.0110.003
93.750.0110.004
93.800.0110.004
93.850.0110.004
93.900.0110.005
93.950.0110.005
94.000.0110.006
94.050.0110.006
94.100.0110.006
94.150.0110.007
94.200.0110.007
94.250.0110.007
94.300.0110.008
94.350.0110.008
94.400.0110.008
94.450.0110.009
94.500.0110.009
94.550.0110.009
94.600.0110.010
94.650.0110.010
94.700.0110.010
94.750.0110.010
94.800.0110.011
94.850.0110.011
94.900.0110.011
94.950.0110.011
95.000.0110.012
95.050.0110.012
95.100.0110.012
95.150.0110.012
Page 483
Page 1105 Download HTML
Summary for Pond 50P: Subsurface Basin Lot 4
Inflow Area = 1,850 sf,100.00% Impervious, Inflow Depth = 11.17" for 100 YR-F event Inflow = 0.51 cfs @ 12.09 hrs, Volume= 1,722 cf Outflow = 0.05 cfs @ 11.24 hrs, Volume= 1,722 cf, Atten= 91%, Lag= 0.0 min Discarded = 0.05 cfs @ 11.24 hrs, Volume= 1,722 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 95.06' @ 12.92 hrs Surf.Area= 0.011 ac Storage= 0.012 af Plug-Flow detention time= 68.3 min calculated for 1,722 cf (100% of inflow) Center-of-Mass det. time= 68.3 min (801.2 - 732.9)
VolumeInvertAvail.StorageStorage Description
#1A93.00'0.007 af7.65"W x 64.33"L x 2.17"H Field A
0.024 af Overall - 0.007 af Embedded = 0.017 af x 40.0% Voids
#2A93.33'0.005 afADS N-12 15" x 9 Inside #1 Inside = 14.8"W x 14.8"H => 1.20 sf x 20.00"L = 24.0 cf Outside = 18.0"W x 18.0"H => 1.60 sf x 20.00"L = 31.9 cf 9 Chambers in 3 Rows 6.31' Header x 1.20 sf x 2 = 15.2 cf Inside
0.012 afTotal Available Storage
0.012 af Total Available Storage
Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Discarded93.00'4.050 in/hr Exfiltration over Surface area
Discarded OutFlowMax=0.05 cfs @ 11.24 hrs HW=93.02' (Free Discharge)
1=Exfiltration (Exfiltration Controls 0.05 cfs)
Pond 50P: Subsurface Basin Lot 4 Exfiltration
Page 1106 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025 utions LLC Page 485
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LL
Pond 50P: Subsurface Basin Lot 4 - Chamber Wizard Field A
Chamber Model = ADS N-12 15" (ADS N-12ยฎ Pipe) Inside= 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside= 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf 18.0" Wide + 10.9" Spacing = 28.9" C-C Row Spacing 3 Chambers/Row x 20.00' Long +1.50' Header x 2 = 63.00' Row Length +8.0" End Stone x 2 = 64.33' Base Length 3 Rows x 18.0" Wide + 10.9" Spacing x 2 + 8.0" Side Stone x 2 = 7.65' Base Width 4.0" Stone Base + 18.0" Chamber Height + 4.0" Stone Cover = 2.17' Field Height 9 Chambers x 24.0 cf + 6.31' Header x 1.20 sf x 2 = 231.2 cf Chamber Storage 9 Chambers x 31.9 cf + 6.31' Header x 1.60 sf x 2 = 307.5 cf Displacement 1,065.8 cf Field - 307.5 cf Chambers = 758.3 cf Stone x 40.0% Voids = 303.3 cf Stone Storage Chamber Storage + Stone Storage = 534.5 cf = 0.012 af Overall Storage Efficiency = 50.1% Overall System Size = 64.33' x 7.65' x 2.17' 9 Chambers 39.5 cy Field 28.1 cy Stone
Page 1107 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025 utions LLC Page 486
Analysis - Proposed Conditions NOAA 24 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 50P: Subsurface Basin Lot 4
Pond 50P: Subsurface Basin Lot 4
Stage-Discharge
Page 1108 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025
Analysis - Proposed Conditions NOAA 24 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 487
Pond 50P: Subsurface Basin Lot 4
Page 1109 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025
Analysis - Proposed Conditions NOAA 24 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 50P: Subsurface Basin Lot 4
Time (hours)Inflow (cfs)Storage (acre-feet)Elevation (feet)Discarded (cfs)
0.000.000.00093.000.00
2.000.000.00093.000.00
4.000.010.00093.000.01
6.000.010.00093.000.01
8.000.010.00093.000.01
10.000.020.00093.000.02
12.000.310.00593.910.05
14.000.020.01094.760.05
16.000.010.00694.020.05
18.000.010.00093.000.01
20.000.010.00093.000.01
22.000.010.00093.000.01
24.000.010.00093.000.01
26.000.000.00093.000.00
28.000.000.00093.000.00
30.000.000.00093.000.00
32.000.000.00093.000.00
34.000.000.00093.000.00
36.000.000.00093.000.00
38.000.000.00093.000.00
40.000.000.00093.000.00
42.000.000.00093.000.00
44.000.000.00093.000.00
46.000.000.00093.000.00
48.000.000.00093.000.00
50.000.000.00093.000.00
52.000.000.00093.000.00
54.000.000.00093.000.00
56.000.000.00093.000.00
58.000.000.00093.000.00
60.000.000.00093.000.00
62.000.000.00093.000.00
64.000.000.00093.000.00
66.000.000.00093.000.00
68.000.000.00093.000.00
70.000.000.00093.000.00
72.000.000.00093.000.00
Page 488
Page 1110 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025
YR-F Rainfall=11.41" Printed 10/24/2025 Page 489
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 50P: Subsurface Basin Lot 4
Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
93.000.0094.040.05
93.020.0594.060.05
93.040.0594.080.05
93.060.0594.100.05
93.080.0594.120.05
93.100.0594.140.05
93.120.0594.160.05
93.140.0594.180.05
93.160.0594.200.05
93.180.0594.220.05
93.200.0594.240.05
93.220.0594.260.05
93.240.0594.280.05
93.260.0594.300.05
93.280.0594.320.05
93.300.0594.340.05
93.320.0594.360.05
93.340.0594.380.05
93.360.0594.400.05
93.380.0594.420.05
93.400.0594.440.05
93.420.0594.460.05
93.440.0594.480.05
93.460.0594.500.05
93.480.0594.520.05
93.500.0594.540.05
93.520.0594.560.05
93.540.0594.580.05
93.560.0594.600.05
93.580.0594.620.05
93.600.0594.640.05
93.620.0594.660.05
93.640.0594.680.05
93.660.0594.700.05
93.680.0594.720.05
93.700.0594.740.05
93.720.0594.760.05
93.740.0594.780.05
93.760.0594.800.05
93.780.0594.820.05
93.800.0594.840.05
93.820.0594.860.05
93.840.0594.880.05
93.860.0594.900.05
93.880.0594.920.05
93.900.0594.940.05
93.920.0594.960.05
93.940.0594.980.05
93.960.0595.000.05
93.980.0595.020.05
94.000.0595.040.05
94.020.0595.060.05
Elevation (feet)Discarded (cfs)
95.080.05
95.100.05
95.120.05
95.140.05
95.160.05
Page 1111 Download HTML
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025
Stage-Area-Storage for Pond 50P: Subsurface Basin Lot 4
Elevation (feet)Surface (acres)Storage (acre-feet)
93.000.0110.000
93.050.0110.000
93.100.0110.000
93.150.0110.001
93.200.0110.001
93.250.0110.001
93.300.0110.001
93.350.0110.002
93.400.0110.002
93.450.0110.002
93.500.0110.002
93.550.0110.002
93.600.0110.003
93.650.0110.003
93.700.0110.003
93.750.0110.004
93.800.0110.004
93.850.0110.004
93.900.0110.005
93.950.0110.005
94.000.0110.006
94.050.0110.006
94.100.0110.006
94.150.0110.007
94.200.0110.007
94.250.0110.007
94.300.0110.008
94.350.0110.008
94.400.0110.008
94.450.0110.009
94.500.0110.009
94.550.0110.009
94.600.0110.010
94.650.0110.010
94.700.0110.010
94.750.0110.010
94.800.0110.011
94.850.0110.011
94.900.0110.011
94.950.0110.011
95.000.0110.012
95.050.0110.012
95.100.0110.012
95.150.0110.012
Page 490
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NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025 utions LLC Page 491
Analysis - Proposed Conditions NOAA 24- Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 52P: Subsurface Basin Lot 6
Inflow Area = 1,850 sf, 100.00% Impervious, Inflow Depth = 11.17" for 100 YR-F event Inflow = 0.51 cfs @ 12.09 hrs, Volume= 1,722 cf Outflow = 0.07 cfs @ 11.55 hrs, Volume= 1,722 cf, Atten= 86%, Lag= 0.0 min Discarded = 0.07 cfs @ 11.55 hrs, Volume= 1,722 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 95.14' @ 12.52 hrs Surf.Area= 0.008 ac Storage= 0.009 af Plug-Flow detention time= 28.1 min calculated for 1,722 cf (100% of inflow) Center-of-Mass det. time= 28.1 min (761.1 - 732.9)
VolumeInvertAvail.StorageStorage Description
#1A93.00'0.005 af7.65"W x 47.33"L x 2.17"H Field A
0.018 af Overall - 0.005 af Embedded = 0.013 af x 40.0% Voids
#2A93.33'0.004 afADS N-12 15" x 6 Inside #1 Inside = 14.8"W x 14.8"H => 1.20 sf x 20.00"L = 24.0 cf Outside = 18.0"W x 18.0"H => 1.60 sf x 20.00"L = 31.9 cf Row Length Adjustment= +3.00' x 1.20 sf x 3 rows 6.31' Header x 1.20 sf x 2 = 15.2 cf Inside
0.009 af Total Available Storage
Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Discarded93.00'8.450 in/hr Exfiltration over Surface area
Discarded OutFlowMax=0.07 cfs @ 11.55 hrsHW=93.03' (Free Discharge)
1=Exfiltration (Exfiltration Controls 0.07 cfs)
Pond 52P: Subsurface Basin Lot 6 Exfiltration
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NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025 utions LLC Page 492
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LL
Pond 52P: Subsurface Basin Lot 6 - Chamber Wizard Field A
Chamber Model = ADS N-12 15" (ADS N-12ยฎ Pipe) Inside= 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside= 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf Row Length Adjustment= +3.00' x 1.20 sf x 3 rows 18.0" Wide + 10.9" Spacing = 28.9" C-C Row Spacing 2 Chambers/Row x 20.00' Long +3.00' Row Adjustment +1.50' Header x 2 = 46.00' Row Length +8.0" End Stone x 2 = 47.33' Base Length 3 Rows x 18.0" Wide + 10.9" Spacing x 2 + 8.0" Side Stone x 2 = 7.65' Base Width 4.0" Stone Base + 18.0" Chamber Height + 4.0" Stone Cover = 2.17' Field Height 6 Chambers x 24.0 cf +3.00' Row Adjustment x 1.20 sf x 3 Rows + 6.31' Header x 1.20 sf x 2 = 170.0 cf Chamber Storage 6 Chambers x 31.9 cf +3.00' Row Adjustment x 1.60 sf x 3 Rows + 6.31' Header x 1.60 sf x 2 = 226.1 cf Displacement 784.1 cf Field - 226.1 cf Chambers = 558.1 cf Stone x 40.0% Voids = 223.2 cf Stone Storage Chamber Storage + Stone Storage = 393.2 cf = 0.009 af Overall Storage Efficiency = 50.1% Overall System Size = 47.33' x 7.65' x 2.17' 6 Chambers 29.0 cy Field 20.7 cy Stone
Page 1114 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025 utions LLC Page 493
Analysis - Proposed Conditions NOAA 24 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 52P: Subsurface Basin Lot 6
Pond 52P: Subsurface Basin Lot 6
Page 1115 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 494
Pond 52P: Subsurface Basin Lot 6
Stage-Area-Storage
Page 1116 Download HTML
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 52P: Subsurface Basin Lot 6
Time (hours)Inflow (cfs)Storage (acre-feet)Elevation (feet)Discarded (cfs)
0.000.000.00093.000.00
2.000.000.00093.000.00
4.000.010.00093.000.01
6.000.010.00093.000.01
8.000.010.00093.000.01
10.000.020.00093.000.02
12.000.310.00393.890.07
14.000.020.00594.170.07
16.000.010.00093.000.01
18.000.010.00093.000.01
20.000.010.00093.000.01
22.000.010.00093.000.01
24.000.010.00093.000.01
26.000.000.00093.000.00
28.000.000.00093.000.00
30.000.000.00093.000.00
32.000.000.00093.000.00
34.000.000.00093.000.00
36.000.000.00093.000.00
38.000.000.00093.000.00
40.000.000.00093.000.00
42.000.000.00093.000.00
44.000.000.00093.000.00
46.000.000.00093.000.00
48.000.000.00093.000.00
50.000.000.00093.000.00
52.000.000.00093.000.00
54.000.000.00093.000.00
56.000.000.00093.000.00
58.000.000.00093.000.00
60.000.000.00093.000.00
62.000.000.00093.000.00
64.000.000.00093.000.00
66.000.000.00093.000.00
68.000.000.00093.000.00
70.000.000.00093.000.00
72.000.000.00093.000.00
Page 495
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NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 52P: Subsurface Basin Lot 6
Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
93.000.0094.040.07
93.020.0794.060.07
93.040.0794.080.07
93.060.0794.100.07
93.080.0794.120.07
93.100.0794.140.07
93.120.0794.160.07
93.140.0794.180.07
93.160.0794.200.07
93.180.0794.220.07
93.200.0794.240.07
93.220.0794.260.07
93.240.0794.280.07
93.260.0794.300.07
93.280.0794.320.07
93.300.0794.340.07
93.320.0794.360.07
93.340.0794.380.07
93.360.0794.400.07
93.380.0794.420.07
93.400.0794.440.07
93.420.0794.460.07
93.440.0794.480.07
93.460.0794.500.07
93.480.0794.520.07
93.500.0794.540.07
93.520.0794.560.07
93.540.0794.580.07
93.560.0794.600.07
93.580.0794.620.07
93.600.0794.640.07
93.620.0794.660.07
93.640.0794.680.07
93.660.0794.700.07
93.680.0794.720.07
93.700.0794.740.07
93.720.0794.760.07
93.740.0794.780.07
93.760.0794.800.07
93.780.0794.820.07
93.800.0794.840.07
93.820.0794.860.07
93.840.0794.880.07
93.860.0794.900.07
93.880.0794.920.07
93.900.0794.940.07
93.920.0794.960.07
93.940.0794.980.07
93.960.0795.000.07
93.980.0795.020.07
94.000.0795.040.07
94.020.0795.060.07
Elevation (feet)Discarded (cfs)
95.080.07
95.100.07
95.120.07
95.140.07
95.160.07
Page 496
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025
Stage-Area-Storage for Pond 52P: Subsurface Basin Lot 6
Elevation (feet)Surface (acres)Storage (acre-feet)
93.000.0080.000
93.050.0080.000
93.100.0080.000
93.150.0080.000
93.200.0080.001
93.250.0080.001
93.300.0080.001
93.350.0080.001
93.400.0080.001
93.450.0080.001
93.500.0080.002
93.550.0080.002
93.600.0080.002
93.650.0080.002
93.700.0080.002
93.750.0080.003
93.800.0080.003
93.850.0080.003
93.900.0080.003
93.950.0080.004
94.000.0080.004
94.050.0080.004
94.100.0080.005
94.150.0080.005
94.200.0080.005
94.250.0080.005
94.300.0080.006
94.350.0080.006
94.400.0080.006
94.450.0080.006
94.500.0080.007
94.550.0080.007
94.600.0080.007
94.650.0080.007
94.700.0080.008
94.750.0080.008
94.800.0080.008
94.850.0080.008
94.900.0080.008
94.950.0080.008
95.000.0080.008
95.050.0080.009
95.100.0080.009
95.150.0080.009
Page 497
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NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025
Analysis - Proposed Conditions NOAA 24 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
R-F Rainfall=11.41" Printed 10/24/2025 Page 498
Summary for Pond 56P: Subsurface Basin Lot 7
Inflow Area = 1,850 sf, 100.00% Impervious, Inflow Depth = 11.17" for 100 YR-F event Inflow = 0.51 cfs @ 12.09 hrs, Volume= 1,722 cf Outflow = 0.08 cfs @ 11.58 hrs, Volume= 1,722 cf, Atten= 84%, Lag= 0.0 min Discarded = 0.08 cfs @ 11.58 hrs, Volume= 1,722 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 96.01' @ 12.51 hrs Surf.Area= 0.008 ac Storage= 0.008 af Plug-Flow detention time= 21.4 min calculated for 1,722 cf (100% of inflow) Center-of-Mass det. time= 21.4 min (754.3 - 732.9)
VolumeInvertAvail.StorageStorage Description
#1A94.00'0.005 af7.65'W x 45.33'L x 2.17'H Field A 0.017 af Overall - 0.005 af Embedded = 0.012 af x 40.0% Voids
#2A94.33'0.004 afADS N-12 15" x 6 Inside #1 Inside = 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside = 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf Row Length Adjustment= +1.00' x 1.20 sf x 3 rows 6.31' Header x 1.20 sf x 2 = 15.2 cf Inside
0.009 af Total Available Storage
Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Discarded94.00'10.000 in/hr Exfiltration over Surface area
Discarded OutFlowMax=0.08 cfs @ 11.58 hrsHW=94.02' (Free Discharge)
1=Exfiltration (Exfiltration Controls 0.08 cfs)
Pond 56P: Subsurface Basin Lot 7 Exfiltration
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NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025 utions LLC Page 499
Analysis - Proposed Conditions NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions Ltd
Pond 56P: Subsurface Basin Lot 7 - Chamber Wizard Field A
Chamber Model = ADS N-12 15" (ADS N-12ยฎ Pipe) Inside= 14.8"W x 14.8"H => 1.20 sf x 20.00'L = 24.0 cf Outside= 18.0"W x 18.0"H => 1.60 sf x 20.00'L = 31.9 cf Row Length Adjustment= +1.00' x 1.20 sf x 3 rows 18.0" Wide + 10.9" Spacing = 28.9" C-C Row Spacing 2 Chambers/Row x 20.00' Long +1.00' Row Adjustment +1.50' Header x 2 = 44.00' Row Length +8.0" End Stone x 2 = 45.33' Base Length 3 Rows x 18.0" Wide + 10.9" Spacing x 2 + 8.0" Side Stone x 2 = 7.65' Base Width 4.0" Stone Base + 18.0" Chamber Height + 4.0" Stone Cover = 2.17' Field Height 6 Chambers x 24.0 cf +1.00' Row Adjustment x 1.20 sf x 3 Rows + 6.31' Header x 1.20 sf x 2 = 162.8 cf Chamber Storage 6 Chambers x 31.9 cf +1.00' Row Adjustment x 1.60 sf x 3 Rows + 6.31' Header x 1.60 sf x 2 = 216.5 cf Displacement 751.0 cf Field - 216.5 cf Chambers = 534.5 cf Stone x 40.0% Voids = 213.8 cf Stone Storage Chamber Storage + Stone Storage = 376.6 cf = 0.009 af Overall Storage Efficiency = 50.1% Overall System Size = 45.33' x 7.65' x 2.17' 6 Chambers 27.8 cy Field 19.8 cy Stone
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NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025 utions LLC Page 500
Analysis - Proposed Conditions NOAA 24-h Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 56P: Subsurface Basin Lot 7
Pond 56P: Subsurface Basin Lot 7
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NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025 utions LLC Page 501
Analysis - Proposed Conditions NOAA 24 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 56P: Subsurface Basin Lot 7
Stage-Area-Storage
0.000 0.001 0.001 0.002 0.002 0.003 0.003 0.004 0.004 0.005 0.005 0.006 0.006 0.007 0.007 0.008 0.009 Storage (acre-feet)
Surface Storage
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NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025
Analysis - Proposed Conditions NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 56P: Subsurface Basin Lot 7
Time (hours)Inflow (cfs)Storage (acre-feet)Elevation (feet)Discarded (cfs)
0.000.000.00094.000.00
2.000.000.00094.000.00
4.000.010.00094.000.01
6.000.010.00094.000.01
8.000.010.00094.000.01
10.000.020.00094.000.02
12.000.310.00394.840.08
14.000.020.00394.840.08
16.000.010.00094.000.01
18.000.010.00094.000.01
20.000.010.00094.000.01
22.000.010.00094.000.01
24.000.010.00094.000.01
26.000.000.00094.000.00
28.000.000.00094.000.00
30.000.000.00094.000.00
32.000.000.00094.000.00
34.000.000.00094.000.00
36.000.000.00094.000.00
38.000.000.00094.000.00
40.000.000.00094.000.00
42.000.000.00094.000.00
44.000.000.00094.000.00
46.000.000.00094.000.00
48.000.000.00094.000.00
50.000.000.00094.000.00
52.000.000.00094.000.00
54.000.000.00094.000.00
56.000.000.00094.000.00
58.000.000.00094.000.00
60.000.000.00094.000.00
62.000.000.00094.000.00
64.000.000.00094.000.00
66.000.000.00094.000.00
68.000.000.00094.000.00
70.000.000.00094.000.00
72.000.000.00094.000.00
Page 502
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NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025
YR-F Rainfall=11.41" Printed 10/24/2025 Page 503
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 56P: Subsurface Basin Lot 7
Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
94.000.0095.040.08
94.020.0895.060.08
94.040.0895.080.08
94.060.0895.100.08
94.080.0895.120.08
94.100.0895.140.08
94.120.0895.160.08
94.140.0895.180.08
94.160.0895.200.08
94.180.0895.220.08
94.200.0895.240.08
94.220.0895.260.08
94.240.0895.280.08
94.260.0895.300.08
94.280.0895.320.08
94.300.0895.340.08
94.320.0895.360.08
94.340.0895.380.08
94.360.0895.400.08
94.380.0895.420.08
94.400.0895.440.08
94.420.0895.460.08
94.440.0895.480.08
94.460.0895.500.08
94.480.0895.520.08
94.500.0895.540.08
94.520.0895.560.08
94.540.0895.580.08
94.560.0895.600.08
94.580.0895.620.08
94.600.0895.640.08
94.620.0895.660.08
94.640.0895.680.08
94.660.0895.700.08
94.680.0895.720.08
94.700.0895.740.08
94.720.0895.760.08
94.740.0895.780.08
94.760.0895.800.08
94.780.0895.820.08
94.800.0895.840.08
94.820.0895.860.08
94.840.0895.880.08
94.860.0895.900.08
94.880.0895.920.08
94.900.0895.940.08
94.920.0895.960.08
94.940.0895.980.08
94.960.0896.000.08
94.980.0896.020.08
95.000.0896.040.08
95.020.0896.060.08
Elevation (feet)Discarded (cfs)
96.080.08
96.100.08
96.120.08
96.140.08
96.160.08
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025
Stage-Area-Storage for Pond 56P: Subsurface Basin Lot 7
Elevation (feet)Surface (acres)Storage (acre-feet)
94.000.0080.000
94.050.0080.000
94.100.0080.000
94.150.0080.000
94.200.0080.001
94.250.0080.001
94.300.0080.001
94.350.0080.001
94.400.0080.001
94.450.0080.001
94.500.0080.002
94.550.0080.002
94.600.0080.002
94.650.0080.002
94.700.0080.002
94.750.0080.003
94.800.0080.003
94.850.0080.003
94.900.0080.003
94.950.0080.004
95.000.0080.004
95.050.0080.004
95.100.0080.004
95.150.0080.005
95.200.0080.005
95.250.0080.005
95.300.0080.005
95.350.0080.006
95.400.0080.006
95.450.0080.006
95.500.0080.006
95.550.0080.007
95.600.0080.007
95.650.0080.007
95.700.0080.007
95.750.0080.007
95.800.0080.007
95.850.0080.008
95.900.0080.008
95.950.0080.008
96.000.0080.008
96.050.0080.008
96.100.0080.008
96.150.0080.009
Page 504
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Multi-Event Tables Printed 10/24/2025 Page 505
Events for Subcatchment 36S: Roof Lot 1
EventRainfall (inches)Runoff (cfs)Volume (cubic-feet)Depth (inches)
2 YR-C3.420.154913.19
2 YR-F4.040.185873.81
10 YR-C5.380.247935.14
10 YR-F6.340.289416.10
100 YR-C9.480.421,4249.24
100 YR-F11.410.511,72211.17
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Multi-Event Tables Printed 10/24/2025 Page 506
Events for Subcatchment 37S: Roof Lot 8
EventRainfall (inches)Runoff (cfs)Volume (cubic-feet)Depth (inches)
2 YR-C3.420.154913.19
2 YR-F4.040.185873.81
10 YR-C5.380.247935.14
10 YR-F6.340.289416.10
100 YR-C9.480.421,4249.24
100 YR-F11.410.511,72211.17
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Multi-Event Tables Printed 10/24/2025 Page 507
Events for Subcatchment 38S: Roof Lot 2
EventRainfall (inches)Runoff (cfs)Volume (cubic-feet)Depth (inches)
2 YR-C3.420.154913.19
2 YR-F4.040.185873.81
10 YR-C5.380.247935.14
10 YR-F6.340.289416.10
100 YR-C9.480.421,4249.24
100 YR-F11.410.511,72211.17
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Multi-Event Tables Printed 10/24/2025 Page 508
Events for Subcatchment 40S: Roof Lot 9
EventRainfall (inches)Runoff (cfs)Volume (cubic-feet)Depth (inches)
2 YR-C3.420.154913.19
2 YR-F4.040.185873.81
10 YR-C5.380.247935.14
10 YR-F6.340.289416.10
100 YR-C9.480.421,4249.24
100 YR-F11.410.511,72211.17
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Multi-Event Tables Printed 10/24/2025 Page 509
Events for Subcatchment 42S: Roof Lot 10
EventRainfall (inches)Runoff (cfs)Volume (cubic-feet)Depth (inches)
2 YR-C3.420.154913.19
2 YR-F4.040.185873.81
10 YR-C5.380.247935.14
10 YR-F6.340.289416.10
100 YR-C9.480.421,4249.24
100 YR-F11.410.511,72211.17
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Multi-Event Tables Printed 10/24/2025 Page 510
Events for Subcatchment 44S: Roof Lot 3
EventRainfall (inches)Runoff (cfs)Volume (cubic-feet)Depth (inches)
2 YR-C3.420.154913.19
2 YR-F4.040.185873.81
10 YR-C5.380.247935.14
10 YR-F6.340.289416.10
100 YR-C9.480.421,4249.24
100 YR-F11.410.511,72211.17
Page 1132 Download HTML
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Multi-Event Tables Printed 10/24/2025 Page 511
Page 511
Events for Subcatchment 48S: Roof Lot 4
EventRainfall (inches)Runoff (cfs)Volume (cubic-feet)Depth (inches)
2 YR-C3.420.154913.19
2 YR-F4.040.185873.81
10 YR-C5.380.247935.14
10 YR-F6.340.289416.10
100 YR-C9.480.421,4249.24
100 YR-F11.410.511,72211.17
Page 1133 Download HTML
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Multi-Event Tables Printed 10/24/2025 Page 512
Events for Subcatchment 51S: Roof Lot 6
EventRainfall (inches)Runoff (cfs)Volume (cubic-feet)Depth (inches)
2 YR-C3.420.154913.19
2 YR-F4.040.185873.81
10 YR-C5.380.247935.14
10 YR-F6.340.289416.10
100 YR-C9.480.421,4249.24
100 YR-F11.410.511,72211.17
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Multi-Event Tables Printed 10/24/2025 Page 513
Events for Subcatchment 55S: Roof Lot 7
EventRainfall (inches)Runoff (cfs)Volume (cubic-feet)Depth (inches)
2 YR-C3.420.154913.19
2 YR-F4.040.185873.81
10 YR-C5.380.247935.14
10 YR-F6.340.289416.10
100 YR-C9.480.421,4249.24
100 YR-F11.410.511,72211.17
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Multi-Event Tables Printed 10/24/2025 Page 514
Events for Pond 37P: Subsurface Basin Lot 1
EventInflow (cfs)Discarded (cfs)Elevation (feet)Storage (acre-feet)
2 YR-C0.150.0391.360.002
2 YR-F0.180.0391.510.003
10 YR-C0.240.0391.750.004
10 YR-F0.280.0391.900.006
100 YR-C0.420.0392.490.011
100 YR-F0.510.0393.140.014
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Multi-Event Tables Printed 10/24/2025 Page 515
Events for Pond 38P: Subsurface Basin Lot 8
EventInflow (cfs)Discarded (cfs)Elevation (feet)Storage (acre-feet)
2 YR-C0.150.0894.210.001
2 YR-F0.180.0894.330.001
10 YR-C0.240.0894.600.002
10 YR-F0.280.0894.780.003
100 YR-C0.420.0895.370.006
100 YR-F0.510.0896.010.008
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Multi-Event Tables Printed 10/24/2025 Page 516
Events for Pond 39P: Subsurface Basin Lot 2
EventInflow (cfs)Discarded (cfs)Elevation (feet)Storage (acre-feet)
2 YR-C0.150.0793.250.001
2 YR-F0.180.0793.360.001
10 YR-C0.240.0793.650.002
10 YR-F0.280.0793.810.003
100 YR-C0.420.0794.420.007
100 YR-F0.510.0795.080.009
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Multi-Event Tables Printed 10/24/2025 Page 517
Events for Pond 41P: Subsurface Basin Lot 9
EventInflow (cfs)Discarded (cfs)Elevation (feet)Storage (acre-feet)
2 YR-C0.150.0793.260.001
2 YR-F0.180.0793.370.001
10 YR-C0.240.0793.660.002
10 YR-F0.280.0793.820.003
100 YR-C0.420.0794.450.007
100 YR-F0.510.0795.140.009
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Multi-Event Tables Printed 10/24/2025 Page 518
Events for Pond 43P: Subsurface Basin Lot 10
EventInflow (cfs)Discarded (cfs)Elevation (feet)Storage (acre-feet)
2 YR-C0.150.0892.210.001
2 YR-F0.180.0892.330.001
10 YR-C0.240.0892.600.002
10 YR-F0.280.0892.780.003
100 YR-C0.420.0893.370.006
100 YR-F0.510.0894.010.008
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Multi-Event Tables Printed 10/24/2025 Page 519
Events for Pond 46P: Subsurface Basin Lot 3
EventInflow (cfs)Discarded (cfs)Elevation (feet)Storage (acre-feet)
2 YR-C0.150.0593.300.001
2 YR-F0.180.0593.440.002
10 YR-C0.240.0593.690.003
10 YR-F0.280.0593.850.004
100 YR-C0.420.0594.430.009
100 YR-F0.510.0595.060.012
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Multi-Event Tables Printed 10/24/2025 Page 520
Events for Pond 50P: Subsurface Basin Lot 4
EventInflow (cfs)Discarded (cfs)Elevation (feet)Storage (acre-feet)
2 YR-C0.150.0593.300.001
2 YR-F0.180.0593.440.002
10 YR-C0.240.0593.690.003
10 YR-F0.280.0593.850.004
100 YR-C0.420.0594.430.009
100 YR-F0.510.0595.060.012
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Multi-Event Tables Printed 10/24/2025 Page 521
Events for Pond 52P: Subsurface Basin Lot 6
EventInflow (cfs)Discarded (cfs)Elevation (feet)Storage (acre-feet)
2 YR-C0.150.0793.250.001
2 YR-F0.180.0793.370.001
10 YR-C0.240.0793.650.002
10 YR-F0.280.0793.820.003
100 YR-C0.420.0794.440.006
100 YR-F0.510.0795.140.009
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Multi-Event Tables Printed 10/24/2025 Page 522
Events for Pond 56P: Subsurface Basin Lot 7
EventInflow (cfs)Discarded (cfs)Elevation (feet)Storage (acre-feet)
2 YR-C0.150.0894.210.001
2 YR-F0.180.0894.330.001
10 YR-C0.240.0894.600.002
10 YR-F0.280.0894.780.003
100 YR-C0.420.0895.370.006
100 YR-F0.510.0896.010.008
Page 1144 Download HTML
Stormwater Management Report South Hope Chapel Rd. Subdivision Project #23184
Appendix D โ€“ Failure Analysis
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Analysis - Failure Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Project Notes
Rainfall events imported from "240214_Analysis.hcp"
Printed 12/19/2025 Page 2
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Analysis - Failure
Prepared by Civil Core Consulting Printed 12/19/2025
HydroCAD\circledR 10.20-8a s/n 13637\circledC 2025 HydroCAD Software Solutions LLC Page 3
Rainfall Events Listing (selected events)
Event#Event NameStorm TypeCurveModeDuration (hours)B/BDepth (inches)AMC
12 YR-CNOAA 24-hrDDefault24.0013.422
210 YR-CNOAA 24-hrDDefault24.0015.382
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Analysis - Failure Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Printed 12/19/2025 Page 4
Area Listing (all nodes)
Area (sq-ft)CNDescription (subcatchment-numbers)
101,49539>75% Grass cover, Good, HSG A (2S, 3S, 4S)
8,71298Paved parking, HSG A (6S)
25,70098Paved roads w/curbs & sewers, HSG A (7S, 8S)
19,65098Roofs, HSG A (5S, 14S, 16S, 17S, 18S, 35S, 36S, 37S, 38S, 39S)
155,55760TOTAL AREA
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Analysis - Failure Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Printed 12/19/2025 Page 5
Soil Listing (all nodes)
Area (sq-ft)Soil GroupSubcatchment Numbers
155,557HSG A2S, 3S, 4S, 5S, 6S, 7S, 8S, 14S, 16S, 17S, 18S, 35S, 36S, 37S, 38S, 39S
0HSG B
0HSG C
0HSG D
0Other
155,557TOTAL AREA
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Analysis - Failure
Prepared by Civil Core Consulting Printed 12/19/2025
HydroCAD\textregistered 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 6
Ground Covers (all nodes)
HSG-A (sq-ft)HSG-B (sq-ft)HSG-C (sq-ft)HSG-D (sq-ft)Other (sq-ft)Total (sq-ft)Ground Cover
101,4950000101,495>75% Grass cover, Good
8,71200008,712Paved parking
25,700000025,700Paved roads w/curbs & sewers
19,650000019,650Roofs
155,5570000155,557TOTAL AREA
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Analysis - Failure
Prepared by Civil Core Consulting Printed 12/19/2025
HydroCAD\textregistered 10.20-8a s/n 13637\circledR 2025 HydroCAD Software Solutions LLC Page 7
Pipe Listing (all nodes)
Line#Node NumberIn-Invert (feet)Out-Invert (feet)Length (feet)Slope (ft/ft)nWidth (inches)Diam/Height (inches)Inside-Fill (inches)Node Name
12P88.0086.00119.00.01680.0120.012.00.0
23P92.0891.6538.00.01130.0110.012.00.0
34P92.0090.7552.00.02400.0110.012.00.0
45P87.4887.0028.00.01710.0120.012.00.0
57P91.8091.6530.00.00500.0120.012.00.0
68P92.7592.657.00.01430.0120.012.00.0
733P93.6593.5017.00.00880.0120.012.00.0
842P90.8090.7511.00.00450.0120.012.00.0
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Analysis - Failure NOAA 24-hr D 2 YR-C Rainfall=3.42" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 8
Time span=0.00-72.00 hrs, dt=0.01 hrs, 7201 points x 3 Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method
Subcatchment2S: DA-P1 PERVOUSRunoff Area=1.220 ac 0.00% Impervious Runoff Depth=0.01" Flow Length=525' Tc=14.2 min CN=39/0 Runoff=0.00 cfs 24 cf
Subcatchment3S: DA-P3 PERVOUSRunoff Area=0.680 ac 0.00% Impervious Runoff Depth=0.01" Flow Length=363' Tc=11.5 min CN=39/0 Runoff=0.00 cfs 13 cf
Subcatchment4S: DA-P2 PERVOUSRunoff Area=0.430 ac 0.00% Impervious Runoff Depth=0.01" Flow Length=168' Slope=0.0300'/' Tc=8.7 min CN=39/0 Runoff=0.00 cfs 8 cf
Subcatchment5S: Typ. RoofRunoff Area=1,850 sf 100.00% Impervious Runoff Depth=3.19" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.15 cfs 491 cf
Subcatchment6S: DA-P3 IMPERVOUSRunoff Area=0.200 ac 100.00% Impervious Runoff Depth=3.19" Flow Length=155' Tc=4.3 min CN=0/98 Runoff=0.59 cfs 2,314 cf
Subcatchment7S: DA-P2 IMPERVOUSRunoff Area=0.190 ac 100.00% Impervious Runoff Depth=3.19" Flow Length=172' Tc=4.3 min CN=0/98 Runoff=0.56 cfs 2,198 cf
Subcatchment8S: DA-P1 IMPERVOUS Flow Length=372'Runoff Area=0.400 ac 100.00% Impervious Runoff Depth=3.19" Slope=0.0200'/' Tc=2.5 min CN=0/98 Runoff=1.33 cfs 4,627 cf
Subcatchment14S: LOT 11 RoofRunoff Area=3,000 sf 100.00% Impervious Runoff Depth=3.19" Flow Length=40' Tc=0.3 min CN=0/98 Runoff=0.25 cfs 797 cf
Subcatchment16S: Typ. RoofRunoff Area=1,850 sf 100.00% Impervious Runoff Depth=3.19" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.15 cfs 491 cf
Subcatchment17S: Typ. RoofRunoff Area=1,850 sf 100.00% Impervious Runoff Depth=3.19" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.15 cfs 491 cf
Subcatchment18S: Typ. RoofRunoff Area=1,850 sf 100.00% Impervious Runoff Depth=3.19" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.15 cfs 491 cf
Subcatchment35S: Typ. RoofRunoff Area=1,850 sf 100.00% Impervious Runoff Depth=3.19" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.15 cfs 491 cf
Subcatchment36S: Typ. RoofRunoff Area=1,850 sf 100.00% Impervious Runoff Depth=3.19" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.15 cfs 491 cf
Subcatchment37S: Typ. RoofRunoff Area=1,850 sf 100.00% Impervious Runoff Depth=3.19" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.15 cfs 491 cf
Subcatchment38S: Typ. RoofRunoff Area=1,850 sf 100.00% Impervious Runoff Depth=3.19" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.15 cfs 491 cf
Subcatchment39S: Typ. RoofRunoff Area=1,850 sf 100.00% Impervious Runoff Depth=3.19" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.15 cfs 491 cf
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Analysis - Failure NOAA 24-hr D 2 YR-C Rainfall=3.42" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 9
Pond 2P: Subsurface Infiltration Basin 1Peak Elev=91.59' Storage=0.141 cf Inflow=0.42 cfs 7,413 cf Outflow=0.42 cfs 7,413 cf
Pond 3P: PERVOUS PAVEMENT 2BPeak Elev=94.62' Storage=764 cf Inflow=0.56 cfs 2,198 cf Outflow=0.12 cfs 2,194 cf
Pond 4P: PERVOUS PAVEMENT 3BPeak Elev=94.71' Storage=773 cf Inflow=0.59 cfs 2,314 cf Outflow=0.15 cfs 2,310 cf
Pond 5P: BIORETENTIONBASIN 1APeak Elev=93.29' Storage=4,929 cf Inflow=1.93 cfs 6,616 cf Outflow=0.21 cfs 6,616 cf
Pond 7P: BIORENTIONBASIN 2APeak Elev=95.52' Storage=174 cf Inflow=0.30 cfs 991 cf Outflow=0.30 cfs 944 cf
Pond 8P: INFILTRATIONBASIN 3Peak Elev=93.61' Storage=3,284 cf Inflow=0.26 cfs 3,697 cf Outflow=0.14 cfs 3,691 cf
Pond 33P: INFILTRATIONBASIN 2Peak Elev=94.16' Storage=2,708 cf Inflow=0.39 cfs 3,138 cf Outflow=0.10 cfs 3,130 cf
Pond 42P: BIORENTION BASIN 3APeak Elev=94.43' Storage=439 cf Inflow=0.45 cfs 1,487 cf Outflow=0.12 cfs 1,388 cf
Link 32L: POA1Inflow=0.42 cfs 7,413 cf Primary=0.42 cfs 7,413 cf
Link 33L: POA 2Inflow=0.10 cfs 3,130 cf Primary=0.10 cfs 3,130 cf
Link 34L: POA 3Inflow=0.14 cfs 3,691 cf Primary=0.14 cfs 3,691 cf
Total Runoff Area = 155,557 sf Runoff Volume = 14,402 cf Average Runoff Depth = 1.11" 65.25% Pervious = 101,495 sf 34.75% Impervious = 54,062 sf
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Summary for Subcatchment 2S: DA-P1 PERVIOUS
Runoff = 0.00 cfs @ 24.01 hrs, Volume= Routed to Pond 5P : BIORETENTION BASIN 1A
24 cf, Depth= 0.01"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-C Rainfall=3.42"
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Analysis - Failure NOAA 24-hr D 2 YR-C Rainfall=3.42" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 11
Hydrograph for Subcatchment 2S: DA-P1 PERVIOUS
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.080.000.000.00
4.000.180.000.000.00
6.000.290.000.000.00
8.000.440.000.000.00
10.000.680.000.000.00
12.001.640.000.000.00
14.002.740.000.000.00
16.002.980.000.000.00
18.003.130.000.000.00
20.003.240.000.000.00
22.003.340.000.000.00
24.003.420.010.000.00
26.003.420.010.000.00
28.003.420.010.000.00
30.003.420.010.000.00
32.003.420.010.000.00
34.003.420.010.000.00
36.003.420.010.000.00
38.003.420.010.000.00
40.003.420.010.000.00
42.003.420.010.000.00
44.003.420.010.000.00
46.003.420.010.000.00
48.003.420.010.000.00
50.003.420.010.000.00
52.003.420.010.000.00
54.003.420.010.000.00
56.003.420.010.000.00
58.003.420.010.000.00
60.003.420.010.000.00
62.003.420.010.000.00
64.003.420.010.000.00
66.003.420.010.000.00
68.003.420.010.000.00
70.003.420.010.000.00
72.003.420.010.000.00
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025 as LLC Page 12
Analysis - Failure NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 3S: DA-P3 PERVIOUS
Runoff = 0.00 cfs @ 24.02 hrs, Volume= Routed to Pond 42P : BIORENTION BASIN 3A
13 cf. Depth= 0.01"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-C Rainfall=3.42"
Area (ac) CN Description
0.680 39 >75% Grass cover, Good, HSG A
0.680 39 100.00% Pervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
9.0 83 0.0400 0.15 Sheet Flow, Grass: Dense n= 0.240 P2= 3.42" Using McCuen-Spiess flow length
0.2 10 0.0240 1.08 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps
2.2 270 2.00 Direct Entry, Pioe Flow
11.5 363 Total
Subcatchment 3S: DA-P3 PERVIOUS
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Analysis - Failure NOAA 24-hr D 2 YR-C Rainfall=3.42" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 13
Hydrograph for Subcatchment 3S: DA-P3 PERVIOUS
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.080.000.000.00
4.000.180.000.000.00
6.000.290.000.000.00
8.000.440.000.000.00
10.000.680.000.000.00
12.001.640.000.000.00
14.002.740.000.000.00
16.002.980.000.000.00
18.003.130.000.000.00
20.003.240.000.000.00
22.003.340.000.000.00
24.003.420.010.000.00
26.003.420.010.000.00
28.003.420.010.000.00
30.003.420.010.000.00
32.003.420.010.000.00
34.003.420.010.000.00
36.003.420.010.000.00
38.003.420.010.000.00
40.003.420.010.000.00
42.003.420.010.000.00
44.003.420.010.000.00
46.003.420.010.000.00
48.003.420.010.000.00
50.003.420.010.000.00
52.003.420.010.000.00
54.003.420.010.000.00
56.003.420.010.000.00
58.003.420.010.000.00
60.003.420.010.000.00
62.003.420.010.000.00
64.003.420.010.000.00
66.003.420.010.000.00
68.003.420.010.000.00
70.003.420.010.000.00
72.003.420.010.000.00
Page 1158 Download HTML
Summary for Subcatchment 4S: DA-P2 PERVIOUS
Runoff = 0.00 cfs @ 24.01 hrs, Volume= Routed to Pond 7P : BIORENTION BASIN 2A
8 cf, Depth = 0.01"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-C Rainfall=3.42"
Area (ac) CN Description
0.430 39 >75% Grass cover, Good, HSG A
0.430 39 100.00% Pervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
7.8 60 0.0300 0.13 Sheet Flow, Grass: Dense n= 0.240 P2= 3.42"
0.9 108 2.00 Direct Entry, Pipe Flow
8.7 168 Total
Subcatchment 4S: DA-P2 PERVIOUS
Subcatchment 4S: DA-P2 PERVIOUS
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Analysis - Failure NOAA 24-hr D 2 YR-C Rainfall=3.42" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 15
Hydrograph for Subcatchment 4S: DA-P2 PERVIOUS
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.080.000.000.00
4.000.180.000.000.00
6.000.290.000.000.00
8.000.440.000.000.00
10.000.680.000.000.00
12.001.640.000.000.00
14.002.740.000.000.00
16.002.980.000.000.00
18.003.130.000.000.00
20.003.240.000.000.00
22.003.340.000.000.00
24.003.420.010.000.00
26.003.420.010.000.00
28.003.420.010.000.00
30.003.420.010.000.00
32.003.420.010.000.00
34.003.420.010.000.00
36.003.420.010.000.00
38.003.420.010.000.00
40.003.420.010.000.00
42.003.420.010.000.00
44.003.420.010.000.00
46.003.420.010.000.00
48.003.420.010.000.00
50.003.420.010.000.00
52.003.420.010.000.00
54.003.420.010.000.00
56.003.420.010.000.00
58.003.420.010.000.00
60.003.420.010.000.00
62.003.420.010.000.00
64.003.420.010.000.00
66.003.420.010.000.00
68.003.420.010.000.00
70.003.420.010.000.00
72.003.420.010.000.00
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025
Analysis - Failure Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 16
Summary for Subcatchment 5S: Typ. Roof
Runoff = 0.15 cfs @ 12.09 hrs, Volume= 491 cf, Depth= 3.19" Routed to Pond 5P : BIORETENTION BASIN 1A
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-C Rainfall=3.42"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
2.00 Direct Entry, Pipe Flow
Subcatchment 5S: Typ. Roof
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Hydrograph for Subcatchment 5S: Typ. Roof
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.080.000.010.00
4.000.180.000.060.00
6.000.290.000.140.00
8.000.440.000.270.00
10.000.680.000.480.01
12.001.640.001.420.09
14.002.740.002.510.01
16.002.980.002.740.00
18.003.130.002.900.00
20.003.240.003.010.00
22.003.340.003.100.00
24.003.420.003.190.00
26.003.420.003.190.00
28.003.420.003.190.00
30.003.420.003.190.00
32.003.420.003.190.00
34.003.420.003.190.00
36.003.420.003.190.00
38.003.420.003.190.00
40.003.420.003.190.00
42.003.420.003.190.00
44.003.420.003.190.00
46.003.420.003.190.00
48.003.420.003.190.00
50.003.420.003.190.00
52.003.420.003.190.00
54.003.420.003.190.00
56.003.420.003.190.00
58.003.420.003.190.00
60.003.420.003.190.00
62.003.420.003.190.00
64.003.420.003.190.00
66.003.420.003.190.00
68.003.420.003.190.00
70.003.420.003.190.00
72.003.420.003.190.00
Page 1162 Download HTML
Analysis - Failure NOAA 24-hr D 2 YR-C Rainfall=3.42" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 18
Summary for Subcatchment 6S: DA-P3 IMPERVIOUS
Runoff = 0.59 cfs @ 12.12 hrs, Volume= Routed to Pond 4P : PERVIOUS PAVEMENT 3B 2,314 cf, Depth= 3.19"
2,314 cf, Depth = 3.19
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-C Rainfall=3.42"
Area (ac) CN Description
0.200 98 Paved parking, HSG A
0.200 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
3.6 37 0.0300 0.17 Sheet Flow, Grass: Short n= 0.150 P2= 3.42" Shallow Concentrated Flow, Paved Kv= 20.3 fps
0.7 118 0.0200 2.87
4.3 155 Total
Subcatchment 6S: DA-P3 IMPERVIOUS
Subcatchment 6S: DA-P3 IMPERVIOUS
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Analysis - Failure NOAA 24-hr D 2 YR-C Rainfall=3.42" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 19
Hydrograph for Subcatchment 6S: DA-P3 IMPERVIOUS
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.080.000.010.00
4.000.180.000.060.01
6.000.290.000.140.01
8.000.440.000.270.02
10.000.680.000.480.03
12.001.640.001.420.34
14.002.740.002.510.03
16.002.980.002.740.02
18.003.130.002.900.01
20.003.240.003.010.01
22.003.340.003.100.01
24.003.420.003.190.01
26.003.420.003.190.00
28.003.420.003.190.00
30.003.420.003.190.00
32.003.420.003.190.00
34.003.420.003.190.00
36.003.420.003.190.00
38.003.420.003.190.00
40.003.420.003.190.00
42.003.420.003.190.00
44.003.420.003.190.00
46.003.420.003.190.00
48.003.420.003.190.00
50.003.420.003.190.00
52.003.420.003.190.00
54.003.420.003.190.00
56.003.420.003.190.00
58.003.420.003.190.00
60.003.420.003.190.00
62.003.420.003.190.00
64.003.420.003.190.00
66.003.420.003.190.00
68.003.420.003.190.00
70.003.420.003.190.00
72.003.420.003.190.00
Page 1164 Download HTML
Analysis - Failure NOAA 24-hr D 2 YR-C Rainfall=3.42" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 20
Summary for Subcatchment 7S: DA-P2 IMPERVIOUS
Runoff = 0.56 cfs @ 12.12 hrs, Volume= Routed to Pond 3P : PERVIOUS PAVEMENT 2B 2,198 cf, Depth= 3.19"
2,198 cf, Depth= 3.19"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-C Rainfall=3.42"
Area (ac) CN Description
0.190 98 Paved roads w/curbs & sewers, HSG A
0.190 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
3.5 35 0.0300 0.17 Sheet Flow, Grass: Short n= 0.150 P2= 3.42" Shallow Concentrated Flow, Paved Kv= 20.3 fps
0.8 137 0.0200 2.87
4.3 172 Total
Subcatchment 7S: DA-P2 IMPERVIOUS
Subcatchment 7S: DA-P2 IMPERVIOUS
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Analysis - Failure NOAA 24-hr D 2 YR-C Rainfall=3.42" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 21
Hydrograph for Subcatchment 7S: DA-P2 IMPERVIOUS
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.080.000.010.00
4.000.180.000.060.01
6.000.290.000.140.01
8.000.440.000.270.02
10.000.680.000.480.03
12.001.640.001.420.32
14.002.740.002.510.03
16.002.980.002.740.02
18.003.130.002.900.01
20.003.240.003.010.01
22.003.340.003.100.01
24.003.420.003.190.01
26.003.420.003.190.00
28.003.420.003.190.00
30.003.420.003.190.00
32.003.420.003.190.00
34.003.420.003.190.00
36.003.420.003.190.00
38.003.420.003.190.00
40.003.420.003.190.00
42.003.420.003.190.00
44.003.420.003.190.00
46.003.420.003.190.00
48.003.420.003.190.00
50.003.420.003.190.00
52.003.420.003.190.00
54.003.420.003.190.00
56.003.420.003.190.00
58.003.420.003.190.00
60.003.420.003.190.00
62.003.420.003.190.00
64.003.420.003.190.00
66.003.420.003.190.00
68.003.420.003.190.00
70.003.420.003.190.00
72.003.420.003.190.00
Page 1166 Download HTML
Analysis - Failure NOAA 24-hr D 2 YR-C Rainfall=3.42" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 22
Summary for Subcatchment 8S: DA-P1 IMPERVIOUS
Runoff = 1.33 cfs @ 12.11 hrs, Volume= Routed to Pond 5P : BIORETENTION BASIN 1A
4,627 cf, Depth= 3.19"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-C Rainfall=3.42"
Area (ac) CN Description
0.400 98 Paved roads w/curbs & sewers, HSG A
0.400 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
1.4 235 0.0200 2.87 Shallow Concentrated Flow, Paved Kv= 20.3 fps
1.1 137 2.00 Direct Entry, Pipe Flow
2.5 372 Total
Subcatchment 8S: DA-P1_IMPERVIOUS
Subcatchment 8S: DA-P1 IMPERVIOUS
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours)
Page 1167 Download HTML
Analysis - Failure NOAA 24-hr D 2 YR-C Rainfall=3.42" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 23
Hydrograph for Subcatchment 8S: DA-P1 IMPERVIOUS
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.080.000.010.01
4.000.180.000.060.01
6.000.290.000.140.02
8.000.440.000.270.03
10.000.680.000.480.06
12.001.640.001.420.78
14.002.740.002.510.07
16.002.980.002.740.04
18.003.130.002.900.02
20.003.240.003.010.02
22.003.340.003.100.02
24.003.420.003.190.02
26.003.420.003.190.00
28.003.420.003.190.00
30.003.420.003.190.00
32.003.420.003.190.00
34.003.420.003.190.00
36.003.420.003.190.00
38.003.420.003.190.00
40.003.420.003.190.00
42.003.420.003.190.00
44.003.420.003.190.00
46.003.420.003.190.00
48.003.420.003.190.00
50.003.420.003.190.00
52.003.420.003.190.00
54.003.420.003.190.00
56.003.420.003.190.00
58.003.420.003.190.00
60.003.420.003.190.00
62.003.420.003.190.00
64.003.420.003.190.00
66.003.420.003.190.00
68.003.420.003.190.00
70.003.420.003.190.00
72.003.420.003.190.00
Page 1168 Download HTML
Analysis - Failure NOAA 24-hr D 2 YR-C Rainfall=3.42" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 24
Summary for Subcatchment 14S: LOT 11 Roof
Runoff = 0.25 cfs @ 12.09 hrs, Volume= Routed to Pond 2P : Subusrface Infiltration Basin 1 797 cf, Depth= 3.19"
797 cf, Depth= 3.19"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-C Rainfall=3.42"
Area (sf) CN Description
3,000 98 Roofs, HSG A
3,000 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)
0.3 40 2.00 Direct Entry, Pipe Flow
Subcatchment 14S: LOT 11 Roof
Page 1169 Download HTML
Hydrograph for Subcatchment 14S: LOT 11 Roof
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.080.000.010.00
4.000.180.000.060.00
6.000.290.000.140.00
8.000.440.000.270.01
10.000.680.000.480.01
12.001.640.001.420.15
14.002.740.002.510.01
16.002.980.002.740.01
18.003.130.002.900.00
20.003.240.003.010.00
22.003.340.003.100.00
24.003.420.003.190.00
26.003.420.003.190.00
28.003.420.003.190.00
30.003.420.003.190.00
32.003.420.003.190.00
34.003.420.003.190.00
36.003.420.003.190.00
38.003.420.003.190.00
40.003.420.003.190.00
42.003.420.003.190.00
44.003.420.003.190.00
46.003.420.003.190.00
48.003.420.003.190.00
50.003.420.003.190.00
52.003.420.003.190.00
54.003.420.003.190.00
56.003.420.003.190.00
58.003.420.003.190.00
60.003.420.003.190.00
62.003.420.003.190.00
64.003.420.003.190.00
66.003.420.003.190.00
68.003.420.003.190.00
70.003.420.003.190.00
72.003.420.003.190.00
Page 1170 Download HTML
Summary for Subcatchment 16S: Typ. Roof
Runoff = 0.15 cfs @ 12.09 hrs, Volume= Routed to Pond 5P : BIORETENTION BASIN 1A
491 cf, Depth= 3.19"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-C Rainfall=3.42"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
2.00 Direct Entry, Pipe Flow
Subcatchment 16S: Typ. Roof
Runoff
Page 1171 Download HTML
Hydrograph for Subcatchment 16S: Typ. Roof
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.080.000.010.00
4.000.180.000.060.00
6.000.290.000.140.00
8.000.440.000.270.00
10.000.680.000.480.01
12.001.640.001.420.09
14.002.740.002.510.01
16.002.980.002.740.00
18.003.130.002.900.00
20.003.240.003.010.00
22.003.340.003.100.00
24.003.420.003.190.00
26.003.420.003.190.00
28.003.420.003.190.00
30.003.420.003.190.00
32.003.420.003.190.00
34.003.420.003.190.00
36.003.420.003.190.00
38.003.420.003.190.00
40.003.420.003.190.00
42.003.420.003.190.00
44.003.420.003.190.00
46.003.420.003.190.00
48.003.420.003.190.00
50.003.420.003.190.00
52.003.420.003.190.00
54.003.420.003.190.00
56.003.420.003.190.00
58.003.420.003.190.00
60.003.420.003.190.00
62.003.420.003.190.00
64.003.420.003.190.00
66.003.420.003.190.00
68.003.420.003.190.00
70.003.420.003.190.00
72.003.420.003.190.00
Page 1172 Download HTML
Summary for Subcatchment 17S: Typ. Roof
Runoff = 0.15 cfs @ 12.09 hrs, Volume= 491 cf, Depth= 3.19" Routed to Pond 5P : BIORETENTION BASIN 1A
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-C Rainfall=3.42"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
2.00 Direct Entry, Pipe Flow
Subcatchment 17S: Typ. Roof
Runoff
Page 1173 Download HTML
Hydrograph for Subcatchment 17S: Typ. Roof
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.080.000.010.00
4.000.180.000.060.00
6.000.290.000.140.00
8.000.440.000.270.00
10.000.680.000.480.01
12.001.640.001.420.09
14.002.740.002.510.01
16.002.980.002.740.00
18.003.130.002.900.00
20.003.240.003.010.00
22.003.340.003.100.00
24.003.420.003.190.00
26.003.420.003.190.00
28.003.420.003.190.00
30.003.420.003.190.00
32.003.420.003.190.00
34.003.420.003.190.00
36.003.420.003.190.00
38.003.420.003.190.00
40.003.420.003.190.00
42.003.420.003.190.00
44.003.420.003.190.00
46.003.420.003.190.00
48.003.420.003.190.00
50.003.420.003.190.00
52.003.420.003.190.00
54.003.420.003.190.00
56.003.420.003.190.00
58.003.420.003.190.00
60.003.420.003.190.00
62.003.420.003.190.00
64.003.420.003.190.00
66.003.420.003.190.00
68.003.420.003.190.00
70.003.420.003.190.00
72.003.420.003.190.00
Page 1174 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025 s LLC Page 30
Analysis - Failure NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 18S: Typ. Roof
Runoff = 0.15 cfs @ 12.09 hrs, Volume= Routed to Pond 5P : BIORETENTION BASIN 1A
491 cf, Depth= 3.19"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-C Rainfall=3.42"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
2.00 Direct Entry, Pipe Flow
Subcatchment 18S: Typ. Roof
Runoff
Page 1175 Download HTML
Hydrograph for Subcatchment 18S: Typ. Roof
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.080.000.010.00
4.000.180.000.060.00
6.000.290.000.140.00
8.000.440.000.270.00
10.000.680.000.480.01
12.001.640.001.420.09
14.002.740.002.510.01
16.002.980.002.740.00
18.003.130.002.900.00
20.003.240.003.010.00
22.003.340.003.100.00
24.003.420.003.190.00
26.003.420.003.190.00
28.003.420.003.190.00
30.003.420.003.190.00
32.003.420.003.190.00
34.003.420.003.190.00
36.003.420.003.190.00
38.003.420.003.190.00
40.003.420.003.190.00
42.003.420.003.190.00
44.003.420.003.190.00
46.003.420.003.190.00
48.003.420.003.190.00
50.003.420.003.190.00
52.003.420.003.190.00
54.003.420.003.190.00
56.003.420.003.190.00
58.003.420.003.190.00
60.003.420.003.190.00
62.003.420.003.190.00
64.003.420.003.190.00
66.003.420.003.190.00
68.003.420.003.190.00
70.003.420.003.190.00
72.003.420.003.190.00
Page 1176 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025 is LLC Page 32
Analysis - Failure NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 35S: Typ. Roof
Runoff = 0.15 cfs @ 12.09 hrs, Volume= 491 cf, Depth= 3.19" Routed to Pond 7P : BIORENTION BASIN 2A
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-C Rainfall=3.42"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)
0.4 45 2.00 Direct Entry, Pipe Flow
Subcatchment 35S: Typ. Roof
Page 1177 Download HTML
Hydrograph for Subcatchment 35S: Typ. Roof
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.080.000.010.00
4.000.180.000.060.00
6.000.290.000.140.00
8.000.440.000.270.00
10.000.680.000.480.01
12.001.640.001.420.09
14.002.740.002.510.01
16.002.980.002.740.00
18.003.130.002.900.00
20.003.240.003.010.00
22.003.340.003.100.00
24.003.420.003.190.00
26.003.420.003.190.00
28.003.420.003.190.00
30.003.420.003.190.00
32.003.420.003.190.00
34.003.420.003.190.00
36.003.420.003.190.00
38.003.420.003.190.00
40.003.420.003.190.00
42.003.420.003.190.00
44.003.420.003.190.00
46.003.420.003.190.00
48.003.420.003.190.00
50.003.420.003.190.00
52.003.420.003.190.00
54.003.420.003.190.00
56.003.420.003.190.00
58.003.420.003.190.00
60.003.420.003.190.00
62.003.420.003.190.00
64.003.420.003.190.00
66.003.420.003.190.00
68.003.420.003.190.00
70.003.420.003.190.00
72.003.420.003.190.00
Page 1178 Download HTML
2 YR-C Rainfall=3.42" Printed 12/19/2025 Page 34
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025
Analysis - Failure NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 36S: Typ. Roof
Runoff = 0.15 cfs @ 12.09 hrs, Volume= 491 cf, Depth= 3.19" Routed to Pond 7P : BIORENTION BASIN 2A
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-C Rainfall=3.42"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
2.00 Direct Entry, Pipe Flow
Subcatchment 36S: Typ. Roof
Page 1179 Download HTML
Hydrograph for Subcatchment 36S: Typ. Roof
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.080.000.010.00
4.000.180.000.060.00
6.000.290.000.140.00
8.000.440.000.270.00
10.000.680.000.480.01
12.001.640.001.420.09
14.002.740.002.510.01
16.002.980.002.740.00
18.003.130.002.900.00
20.003.240.003.010.00
22.003.340.003.100.00
24.003.420.003.190.00
26.003.420.003.190.00
28.003.420.003.190.00
30.003.420.003.190.00
32.003.420.003.190.00
34.003.420.003.190.00
36.003.420.003.190.00
38.003.420.003.190.00
40.003.420.003.190.00
42.003.420.003.190.00
44.003.420.003.190.00
46.003.420.003.190.00
48.003.420.003.190.00
50.003.420.003.190.00
52.003.420.003.190.00
54.003.420.003.190.00
56.003.420.003.190.00
58.003.420.003.190.00
60.003.420.003.190.00
62.003.420.003.190.00
64.003.420.003.190.00
66.003.420.003.190.00
68.003.420.003.190.00
70.003.420.003.190.00
72.003.420.003.190.00
Page 1180 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025 as LLC Page 36
Analysis - Failure NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 37S: Typ. Roof
Runoff = 0.15 cfs @ 12.09 hrs, Volume= 491 cf, Depth= 3.19" Routed to Pond 42P : BIORENTION BASIN 3A
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-C Rainfall=3.42"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
2.00 Direct Entry, Pipe Flow
Subcatchment 37S: Typ. Roof
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Hydrograph for Subcatchment 37S: Typ. Roof
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.080.000.010.00
4.000.180.000.060.00
6.000.290.000.140.00
8.000.440.000.270.00
10.000.680.000.480.01
12.001.640.001.420.09
14.002.740.002.510.01
16.002.980.002.740.00
18.003.130.002.900.00
20.003.240.003.010.00
22.003.340.003.100.00
24.003.420.003.190.00
26.003.420.003.190.00
28.003.420.003.190.00
30.003.420.003.190.00
32.003.420.003.190.00
34.003.420.003.190.00
36.003.420.003.190.00
38.003.420.003.190.00
40.003.420.003.190.00
42.003.420.003.190.00
44.003.420.003.190.00
46.003.420.003.190.00
48.003.420.003.190.00
50.003.420.003.190.00
52.003.420.003.190.00
54.003.420.003.190.00
56.003.420.003.190.00
58.003.420.003.190.00
60.003.420.003.190.00
62.003.420.003.190.00
64.003.420.003.190.00
66.003.420.003.190.00
68.003.420.003.190.00
70.003.420.003.190.00
72.003.420.003.190.00
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025 Page 38
Analysis - Failure NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 38S: Typ. Roof
Runoff = 0.15 cfs @ 12.09 hrs, Volume= 491 cf, Depth= 3.19" Routed to Pond 42P : BIORENTION BASIN 3A
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-C Rainfall=3.42"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
2.00 Direct Entry, Pipe Flow
Subcatchment 38S: Typ. Roof
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Hydrograph for Subcatchment 38S: Typ. Roof
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.080.000.010.00
4.000.180.000.060.00
6.000.290.000.140.00
8.000.440.000.270.00
10.000.680.000.480.01
12.001.640.001.420.09
14.002.740.002.510.01
16.002.980.002.740.00
18.003.130.002.900.00
20.003.240.003.010.00
22.003.340.003.100.00
24.003.420.003.190.00
26.003.420.003.190.00
28.003.420.003.190.00
30.003.420.003.190.00
32.003.420.003.190.00
34.003.420.003.190.00
36.003.420.003.190.00
38.003.420.003.190.00
40.003.420.003.190.00
42.003.420.003.190.00
44.003.420.003.190.00
46.003.420.003.190.00
48.003.420.003.190.00
50.003.420.003.190.00
52.003.420.003.190.00
54.003.420.003.190.00
56.003.420.003.190.00
58.003.420.003.190.00
60.003.420.003.190.00
62.003.420.003.190.00
64.003.420.003.190.00
66.003.420.003.190.00
68.003.420.003.190.00
70.003.420.003.190.00
72.003.420.003.190.00
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025 Page 40
Analysis - Failure Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 39S: Typ. Roof
Runoff = 0.15 cfs @ 12.09 hrs, Volume= 491 cf, Depth= 3.19" Routed to Pond 42P : BIORENTION BASIN 3A
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-C Rainfall=3.42"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)
0.4 45 2.00 Direct Entry, Pipe Flow
Subcatchment 39S: Typ. Roof
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Hydrograph for Subcatchment 39S: Typ. Roof
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.080.000.010.00
4.000.180.000.060.00
6.000.290.000.140.00
8.000.440.000.270.00
10.000.680.000.480.01
12.001.640.001.420.09
14.002.740.002.510.01
16.002.980.002.740.00
18.003.130.002.900.00
20.003.240.003.010.00
22.003.340.003.100.00
24.003.420.003.190.00
26.003.420.003.190.00
28.003.420.003.190.00
30.003.420.003.190.00
32.003.420.003.190.00
34.003.420.003.190.00
36.003.420.003.190.00
38.003.420.003.190.00
40.003.420.003.190.00
42.003.420.003.190.00
44.003.420.003.190.00
46.003.420.003.190.00
48.003.420.003.190.00
50.003.420.003.190.00
52.003.420.003.190.00
54.003.420.003.190.00
56.003.420.003.190.00
58.003.420.003.190.00
60.003.420.003.190.00
62.003.420.003.190.00
64.003.420.003.190.00
66.003.420.003.190.00
68.003.420.003.190.00
70.003.420.003.190.00
72.003.420.003.190.00
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Analysis - Failure NOAA 24-hr D 2 YR-C Rainfall=3.42" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 42
Summary for Pond 2P: Subusrface Infiltration Basin 1
Inflow Area = 80,967 sf, 34.36% Impervious, Inflow Depth = 1.10" for 2 YR-C event Inflow = 0.42 cfs @ 12.09 hrs, Volume= 7,413 cf Outflow = 0.42 cfs @ 12.10 hrs, Volume= 7,413 cf, Atten= 1%, Lag= 0.4 min Primary = 0.42 cfs @ 12.10 hrs, Volume= 7,413 cf Routed to Link 32L : POA1 Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs / 3 Automatic Starting Elev= 91.55' Surf.Area= 0.057 ac Storage= 0.140 af Peak Elev= 91.59' @ 12.10 hrs Surf.Area= 0.057 ac Storage= 0.141 af (0.001 af above start) Plug-Flow detention time= 757.4 min calculated for 1,312 cf (18% of inflow) Center-of-Mass det. time= 2.5 min (871.2 - 868.7 )
VolumeInvertAvail.StorageStorage Description
#1A87.00'0.100 af27.50'W x 90.00'L x 6.00'H Field A
0.341 af Overall - 0.091 af Embedded = 0.250 af x 40.0% Voids
#2A87.50'0.073 afADS N-12 36" x 20 Inside #1 Inside = 36.1"W x 36.1"H => 7.10 sf x 20.00'L = 142.0 cf Outside = 42.0"W x 42.0"H => 8.86 sf x 20.00'L = 177.2 cf 20 Chambers in 5 Rows 24.50' Header x 7.10 sf x 2 = 347.9 cf Inside
0.173 af Total Available Storage
Storage Group A created with Chamber Wizard
Device Routing Invert Outlet Devices #1 Primary 91.55' 48.0" x 48.0" Horiz. Grate C=0.600 #2 Device 1 88.00' 12.0" Round Culvert L=119.0' RCP, square edge headwall, Ke=0.500 Inlet / Outlet Invert=88.00'/86.00' S=0.0168'/' Cc=0.900 n=0.012 Concrete pipe, finished, Flow Area=0.79 sf Primary OutFlow Max=0.42 cfs @ 12.10 hrs HW=91.59' TW=0.00' (Dynamic Tailwater) 1=Grate (Weir Controls 0.42 cfs @ 0.65 fps) 2=Culvert (Passes 0.42 cfs of 0.58 cfs potential flow)
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025 as LLC Page 43
Analysis - Failure NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 2P: Subusrface Infiltration Basin 1 - Chamber Wizard Field A
Chamber Model = ADS N-12 36" (ADS N-12ยฎ Pipe) Inside= 36.1"W x 36.1"H => 7.10 sf x 20.00'L = 142.0 cf Outside= 42.0"W x 42.0"H => 8.86 sf x 20.00'L = 177.2 cf 42.0" Wide + 21.0" Spacing = 63.0" C-C Row Spacing 4 Chambers/Row x 20.00' Long +3.50' Header x 2 = 87.00' Row Length +18.0" End Stone x 2 = 90.00' Base Length 5 Rows x 42.0" Wide + 21.0" Spacing x 4 + 18.0" Side Stone x 2 = 27.50' Base Width 6.0" Stone Base + 42.0" Chamber Height + 24.0" Stone Cover = 6.00' Field Height 20 Chambers x 142.0 cf + 24.50' Header x 7.10 sf x 2 = 3,187.9 cf Chamber Storage 20 Chambers x 177.2 cf + 24.50' Header x 8.86 sf x 2 = 3,978.6 cf Displacement 14,850.0 cf Field - 3,978.6 cf Chambers = 10,871.4 cf Stone x 40.0% Voids = 4,348.5 cf Stone Storage Chamber Storage + Stone Storage = 7,536.4 cf = 0.173 af Overall Storage Efficiency = 50.8% Overall System Size = 90.00' x 27.50' x 6.00' 20 Chambers 550.0 cy Field 402.6 cy Stone
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025 is LLC Page 44
Analysis - Failure NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 2P: Subusrface Infiltration Basin 1
Pond 2P: Subusrface Infiltration Basin 1
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Analysis - Failure NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 45
Pond 2P: Subusrface Infiltration Basin 1
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Analysis - Failure NOAA 24-hr D 2 YR-C Rainfall=3.42" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 46
Hydrograph for Pond 2P: Subusrface Infiltration Basin 1
Time (hours)Inflow (cfs)Storage (acre-feet)Elevation (feet)Primary (cfs)
0.000.000.14091.550.00
2.000.010.14091.550.01
4.000.020.14091.560.02
6.000.030.14091.560.03
8.000.040.14091.560.04
10.000.070.14091.560.07
12.000.300.14191.580.30
14.000.210.14191.580.21
16.000.170.14191.570.17
18.000.120.14091.570.12
20.000.080.14091.560.08
22.000.050.14091.560.05
24.000.030.14091.560.03
26.000.000.14091.550.00
28.000.000.14091.550.00
30.000.000.14091.550.00
32.000.000.14091.550.00
34.000.000.14091.550.00
36.000.000.14091.550.00
38.000.000.14091.550.00
40.000.000.14091.550.00
42.000.000.14091.550.00
44.000.000.14091.550.00
46.000.000.14091.550.00
48.000.000.14091.550.00
50.000.000.14091.550.00
52.000.000.14091.550.00
54.000.000.14091.550.00
56.000.000.14091.550.00
58.000.000.14091.550.00
60.000.000.14091.550.00
62.000.000.14091.550.00
64.000.000.14091.550.00
66.000.000.14091.550.00
68.000.000.14091.550.00
70.000.000.14091.550.00
72.000.000.14091.550.00
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025
Analysis - Failure Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 47
Stage-Discharge for Pond 2P: Subsurface Infiltration Basin 1
Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)
87.000.0089.600.00
87.050.0089.650.00
87.100.0089.700.00
87.150.0089.750.00
87.200.0089.800.00
87.250.0089.850.00
87.300.0089.900.00
87.350.0089.950.00
87.400.0090.000.00
87.450.0090.050.00
87.500.0090.100.00
87.550.0090.150.00
87.600.0090.200.00
87.650.0090.250.00
87.700.0090.300.00
87.750.0090.350.00
87.800.0090.400.00
87.850.0090.450.00
87.900.0090.500.00
87.950.0090.550.00
88.000.0090.600.00
88.050.0090.650.00
88.100.0090.700.00
88.150.0090.750.00
88.200.0090.800.00
88.250.0090.850.00
88.300.0090.900.00
88.350.0090.950.00
88.400.0091.000.00
88.450.0091.050.00
88.500.0091.100.00
88.550.0091.150.00
88.600.0091.200.00
88.650.0091.250.00
88.700.0091.300.00
88.750.0091.350.00
88.800.0091.400.00
88.850.0091.450.00
88.900.0091.500.00
88.950.0091.550.00
89.000.0091.600.58
89.050.0091.650.92
89.100.0091.701.13
89.150.0091.751.30
89.200.0091.801.46
89.250.0091.851.60
89.300.0091.901.72
89.350.0091.951.84
89.400.0092.001.95
89.450.0092.052.06
89.500.0092.102.16
89.550.0092.152.26
Elevation (feet)Primary (cfs)
92.202.35
92.252.44
92.302.52
92.352.60
92.402.69
92.452.76
92.502.84
92.552.91
92.602.98
92.653.05
92.703.12
92.753.19
92.803.26
92.853.32
92.903.38
92.953.45
93.003.51
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Analysis - Failure NOAA 24-hr D 2 YR-C Rainfall=3.42" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 48
Stage-Area-Storage for Pond 2P: Subusrface Infiltration Basin 1
Elevation (feet)Storage (acre-feet)Elevation (feet)Storage (acre-feet)
87.000.00089.600.084
87.050.00189.650.086
87.100.00289.700.088
87.150.00389.750.089
87.200.00589.800.091
87.250.00689.850.093
87.300.00789.900.095
87.350.00889.950.097
87.400.00990.000.099
87.450.01090.050.101
87.500.01190.100.103
87.550.01290.150.105
87.600.01390.200.106
87.650.01490.250.108
87.700.01590.300.110
87.750.01690.350.112
87.800.01790.400.113
87.850.01890.450.115
87.900.02090.500.116
87.950.02190.550.118
88.000.02290.600.119
88.050.02490.650.121
88.100.02690.700.122
88.150.02790.750.123
88.200.02990.800.124
88.250.03190.850.125
88.300.03390.900.126
88.350.03490.950.127
88.400.03691.000.128
88.450.03891.050.129
88.500.04091.100.130
88.550.04291.150.131
88.600.04491.200.132
88.650.04691.250.133
88.700.04791.300.134
88.750.04991.350.136
88.800.05191.400.137
88.850.05391.450.138
88.900.05591.500.139
88.950.05791.550.140
89.000.05991.600.141
89.050.06191.650.142
89.100.06391.700.143
89.150.06591.750.145
89.200.06791.800.146
89.250.06991.850.147
89.300.07191.900.148
89.350.07491.950.149
89.400.07692.000.150
89.450.07892.050.151
89.500.08092.100.153
89.550.08292.150.154
Elevation (feet)Storage (acre-feet)
92.200.155
92.250.156
92.300.157
92.350.158
92.400.159
92.450.161
92.500.162
92.550.163
92.600.164
92.650.165
92.700.166
92.750.167
92.800.168
92.850.170
92.900.171
92.950.172
93.000.173
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Analysis - Failure NOAA 24-hr D 2 YR-C Rainfall=3.42" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 49
Summary for Pond 3P: PERVIOUS PAVEMENT 2B
Inflow Area = 8,276 sf,100.00% Impervious, Inflow Depth = 3.19" for 2 YR-C event
Inflow = 0.56 cfs @ 12.12 hrs, Volume= 2,198 cf
Outflow = 0.12 cfs @ 12.40 hrs, Volume= 2,194 cf, Atten= 78%, Lag= 16.7 min
Primary = 0.12 cfs @ 12.40 hrs, Volume= 2,194 cf
Routed to Pond 33P : INEIL TRATION BASIN 2
Routed to Pond 33P : INFILTRATION BASIN 2
Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs / 3 Peak Elevation = 94.62' @ 12.54 hrs Surf. Area = 6,150 sf Storage = 764 cf Plug-Flow detention time = 132.8 min calculated for 2,194 cf (100% of inflow) Center-of-Mass det. time = 131.5 min (889.4 - 757.9)
VolumeInvertAvail.StorageStorage Description
#193.80'615 cfStone Storage Bed (Prismatic)Listed below (Recalc)1,538 cf Overall ร— 40.0% Voids
#294.30'231 cfSurface and Base Course (Prismatic)Listed below (Recalc)1,538 cf Overall ร— 15.0% Voids
#394.80'1,538 cfSurface (Prismatic)Listed below (Recalc)
2,383 cfTotal Available Storage
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
93.803,07500
94.303,0751,5381,538
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
94.303,07500
94.803,0751,5381,538
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
94.803,07500
95.303,0751,5381,538
DeviceRoutingInvertOutlet Devices
#1Device 393.80'2.5" Vert. Orifice C = 0.600
#2Device 394.80'48.0" x 48.0" Horiz. Grate C = 0.600
#3Primary92.08'12.0" Round Culvert L = 38.0' RCP, groove end projecting, Ke = 0.200Inlet / Outlet Invert= $ 92.08'/91.65' $ S = 0.0113'/' Cc = 0.900n=0.011, Flow Area=0.79 sf
Primary OutFlow Max=0.12 cfs @ 12.40 hrs HW=94.61' TW=94.04' (Dynamic Tailwater) 3=Culvert (Passes 0.12 cfs of 3.29 cfs potential flow) 1=Orifice (Orifice Controls 0.12 cfs @ 3.61 fps) 2=Grate (Controls 0.00 cfs)
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025 Page 50
Analysis - Failure NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025
Analysis - Failure NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 51
Pond 3P: PERVIOUS PAVEMENT 2B
Pond 3P: PERVIOUS PAVEMENT 2B
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Analysis - Failure NOAA 24-hr D 2 YR-C Rainfall=3.42" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 52
Hydrograph for Pond 3P: PERVIOUS PAVEMENT 2B
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Primary (cfs)
0.000.00093.800.00
2.000.00493.800.00
4.000.013393.830.00
6.000.016593.850.01
8.000.029593.880.01
10.000.0313393.910.02
12.000.3239094.120.08
14.000.0359594.280.06
16.000.0236894.100.05
18.000.0118793.950.03
20.000.0111193.890.01
22.000.019293.870.01
24.000.018393.870.01
26.000.004893.840.00
28.000.003393.830.00
30.000.002593.820.00
32.000.002093.820.00
34.000.001793.810.00
36.000.001593.810.00
38.000.001393.810.00
40.000.001193.810.00
42.000.001093.810.00
44.000.00993.810.00
46.000.00993.810.00
48.000.00893.810.00
50.000.00793.810.00
52.000.00793.810.00
54.000.00693.810.00
56.000.00693.800.00
58.000.00693.800.00
60.000.00593.800.00
62.000.00593.800.00
64.000.00593.800.00
66.000.00593.800.00
68.000.00493.800.00
70.000.00493.800.00
72.000.00493.800.00
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Analysis - Failure NOAA 24-hr D 2 YR-C Rainfall=3.42" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 53
Stage-Discharge for Pond 3P: PERVIOUS PAVEMENT 2B
Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)
93.800.0094.320.1194.840.58
93.810.0094.330.1194.850.74
93.820.0094.340.1194.860.93
93.830.0094.350.1194.871.13
93.840.0094.360.1194.881.35
93.850.0094.370.1194.891.58
93.860.0194.380.1194.901.82
93.870.0194.390.1194.912.07
93.880.0194.400.1294.922.34
93.890.0194.410.1294.932.62
93.900.0294.420.1294.942.91
93.910.0294.430.1294.953.21
93.920.0294.440.1294.963.52
93.930.0394.450.1294.973.84
93.940.0394.460.1294.984.17
93.950.0394.470.1294.994.50
93.960.0494.480.1295.004.85
93.970.0494.490.1395.015.13
93.980.0594.500.1395.025.15
93.990.0594.510.1395.035.17
94.000.0594.520.1395.045.18
94.010.0594.530.1395.055.20
94.020.0694.540.1395.065.22
94.030.0694.550.1395.075.24
94.040.0694.560.1395.085.26
94.050.0694.570.1395.095.28
94.060.0694.580.1395.105.30
94.070.0794.590.1495.115.31
94.080.0794.600.1495.125.33
94.090.0794.610.1495.135.35
94.100.0794.620.1495.145.37
94.110.0794.630.1495.155.39
94.120.0894.640.1495.165.40
94.130.0894.650.1495.175.42
94.140.0894.660.1495.185.44
94.150.0894.670.1495.195.46
94.160.0894.680.1495.205.47
94.170.0894.690.1595.215.49
94.180.0994.700.1595.225.51
94.190.0994.710.1595.235.53
94.200.0994.720.1595.245.55
94.210.0994.730.1595.255.56
94.220.0994.740.1595.265.58
94.230.0994.750.1595.275.60
94.240.1094.760.1595.285.61
94.250.1094.770.1595.295.63
94.260.1094.780.1595.305.65
94.270.1094.790.15
94.280.1094.800.16
94.290.1094.810.21
94.300.1094.820.31
94.310.1094.830.43
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Analysis - Failure NOAA 24-hr D 2 YR-C Rainfall=3.42" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 54
Stage-Area-Storage for Pond 3P: PERVIOUS PAVEMENT 2B
Elevation (feet)Storage (cubic-feet)Elevation (feet)Storage (cubic-feet)Elevation (feet)Storage (cubic-feet)
93.80094.3262494.84969
93.811294.3362994.85999
93.822594.3463394.861,030
93.833794.3563894.871,061
93.844994.3664394.881,092
93.856194.3764794.891,122
93.867494.3865294.901,153
93.878694.3965794.911,184
93.889894.4066194.921,215
93.8911194.4166694.931,245
93.9012394.4267094.941,276
93.9113594.4367594.951,307
93.9214894.4468094.961,338
93.9316094.4568494.971,368
93.9417294.4668994.981,399
93.9518594.4769394.991,430
93.9619794.4869895.001,461
93.9720994.4970395.011,491
93.9822194.5070795.021,522
93.9923494.5171295.031,553
94.0024694.5271695.041,584
94.0125894.5372195.051,614
94.0227194.5472695.061,645
94.0328394.5573095.071,676
94.0429594.5673595.081,707
94.0530894.5774095.091,737
94.0632094.5874495.101,768
94.0733294.5974995.111,799
94.0834494.6075395.121,830
94.0935794.6175895.131,860
94.1036994.6276395.141,891
94.1138194.6376795.151,922
94.1239494.6477295.161,953
94.1340694.6577695.171,983
94.1441894.6678195.182,014
94.1543094.6778695.192,045
94.1644394.6879095.202,076
94.1745594.6979595.212,106
94.1846794.7080095.222,137
94.1948094.7180495.232,168
94.2049294.7280995.242,199
94.2150494.7381395.252,229
94.2251794.7481895.262,260
94.2352994.7582395.272,291
94.2454194.7682795.282,322
94.2555494.7783295.292,352
94.2656694.7883695.302,383
94.2757894.79841
94.2859094.80846
94.2960394.81876
94.3061594.82907
94.3162094.83938
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Analysis - Failure NOAA 24-hr D 2 YR-C Rainfall=3.42" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 55
Summary for Pond 4P: PERVIOUS PAVEMENT 3B
Inflow Area = 8,712 sf,100.00% Impervious, Inflow Depth = 3.19" for 2 YR-C event
Inflow = 0.59 cfs @ 12.12 hrs, Volume= 2,314 cf
Outflow = 0.15 cfs @ 12.46 hrs, Volume= 2,310 cf, Atten= 75%, Lag= 20.1 min
Primary = 0.15 cfs @ 12.46 hrs, Volume= 2,310 cf
Routed to Pond 8P : INFILTRATION BASIN 3
Routed to Pond 8P : INFILTRATION BASIN 3
Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs / 3 Peak Elevation = 94.71' @ 12.46 hrs Surf.Area = 5,926 sf Storage = 773 cf Plug-Flow detention time = 106.5 min calculated for 2,310 cf (100% of inflow) Center-of-Mass det. time = 105.4 min (863.3 - 757.9)
VolumeInvertAvail.StorageStorage Description
#193.80'593 cfStone Storage Bed (Prismatic)Listed below (Recalc) 1,482 cf Overall ร— 40.0% Voids
#294.30'222 cfSurface and Base Course (Prismatic)Listed below (Recalc) 1,482 cf Overall ร— 15.0% Voids
#394.80'1,482 cfSurface (Prismatic)Listed below (Recalc)
2,296 cfTotal Available Storage
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
93.802,96300
94.302,9631,4821,482
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
94.302,96300
94.802,9631,4821,482
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
94.802,96300
95.302,9631,4821,482
DeviceRoutingInvertOutlet Devices
#1Device 393.80'2.5" Vert. Orifice C = 0.600
#2Device 394.80'48.0" x 48.0" Horiz. Grate C = 0.600
#3Primary92.00'12.0" Round Culvert L = 52.0' RCP, groove end projecting, Ke = 0.200Inlet / Outlet Invert= $ 92.00'/90.75' $ S = 0.0240'/ Cc = 0.900n=0.011, Flow Area=0.79 sf
Primary OutFlow Max=0.15 cfs @ 12.46 hrs HW=94.71' TW=93.27' (Dynamic Tailwater) 3=Culvert (Passes 0.15 cfs of 4.90 cfs potential flow) 1=Orifice (Orifice Controls 0.15 cfs @ 4.31 fps) 2=Grate (Controls 0.00 cfs)
Page 1200 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025 Page 56
Analysis - Failure NOAA 24 Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 4P: PERVIOUS PAVEMENT 3B
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025 as LLC Page 57
Analysis - Failure NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 4P: PERVIOUS PAVEMENT 3B
Pond 4P: PERVIOUS PAVEMENT 3B
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Analysis - Failure NOAA 24-hr D 2 YR-C Rainfall=3.42" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 58
Hydrograph for Pond 4P: PERVIOUS PAVEMENT 3B
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Primary (cfs)
0.000.00093.800.00
2.000.00493.800.00
4.000.013493.830.00
6.000.016693.860.01
8.000.029593.880.01
10.000.0313393.910.02
12.000.3440194.140.08
14.000.0347594.200.09
16.000.0219193.960.04
18.000.0112093.900.02
20.000.019893.880.01
22.000.018893.870.01
24.000.018193.870.01
26.000.004693.840.00
28.000.003193.830.00
30.000.002493.820.00
32.000.001993.820.00
34.000.001693.810.00
36.000.001493.810.00
38.000.001293.810.00
40.000.001193.810.00
42.000.001093.810.00
44.000.00993.810.00
46.000.00893.810.00
48.000.00793.810.00
50.000.00793.810.00
52.000.00693.810.00
54.000.00693.810.00
56.000.00693.800.00
58.000.00593.800.00
60.000.00593.800.00
62.000.00593.800.00
64.000.00593.800.00
66.000.00493.800.00
68.000.00493.800.00
70.000.00493.800.00
72.000.00493.800.00
Page 1203 Download HTML
Analysis - Failure NOAA 24-hr D 2 YR-C Rainfall=3.42" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 59
Stage-Discharge for Pond 4P: PERVIOUS PAVEMENT 3B
Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)
93.800.0094.320.1194.840.58
93.810.0094.330.1194.850.74
93.820.0094.340.1194.860.93
93.830.0094.350.1194.871.13
93.840.0094.360.1194.881.35
93.850.0094.370.1194.891.58
93.860.0194.380.1194.901.82
93.870.0194.390.1194.912.07
93.880.0194.400.1294.922.34
93.890.0194.410.1294.932.62
93.900.0294.420.1294.942.91
93.910.0294.430.1294.953.21
93.920.0294.440.1294.963.52
93.930.0394.450.1294.973.84
93.940.0394.460.1294.984.17
93.950.0394.470.1294.994.50
93.960.0494.480.1295.004.85
93.970.0494.490.1395.015.21
93.980.0594.500.1395.025.57
93.990.0594.510.1395.035.95
94.000.0594.520.1395.046.20
94.010.0594.530.1395.056.21
94.020.0694.540.1395.066.22
94.030.0694.550.1395.076.24
94.040.0694.560.1395.086.25
94.050.0694.570.1395.096.26
94.060.0694.580.1395.106.28
94.070.0794.590.1495.116.29
94.080.0794.600.1495.126.30
94.090.0794.610.1495.136.32
94.100.0794.620.1495.146.33
94.110.0794.630.1495.156.34
94.120.0894.640.1495.166.36
94.130.0894.650.1495.176.37
94.140.0894.660.1495.186.38
94.150.0894.670.1495.196.40
94.160.0894.680.1495.206.41
94.170.0894.690.1595.216.42
94.180.0994.700.1595.226.44
94.190.0994.710.1595.236.45
94.200.0994.720.1595.246.46
94.210.0994.730.1595.256.47
94.220.0994.740.1595.266.49
94.230.0994.750.1595.276.50
94.240.1094.760.1595.286.51
94.250.1094.770.1595.296.53
94.260.1094.780.1595.306.54
94.270.1094.790.15
94.280.1094.800.16
94.290.1094.810.21
94.300.1094.820.31
94.310.1094.830.43
Page 1204 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025
Analysis - Failure NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 60
Stage-Area-Storage for Pond 4P: PERVIOUS PAVEMENT 3B
Elevation (feet)Storage (cubic-feet)Elevation (feet)Storage (cubic-feet)Elevation (feet)Storage (cubic-feet)
93.80094.3260194.84933
93.811294.3360694.85963
93.822494.3461094.86993
93.833694.3561594.871,022
93.844794.3661994.881,052
93.855994.3762494.891,081
93.867194.3862894.901,111
93.878394.3963394.911,141
93.889594.4063794.921,170
93.8910794.4164194.931,200
93.9011994.4264694.941,230
93.9113094.4365094.951,259
93.9214294.4465594.961,289
93.9315494.4565994.971,319
93.9416694.4666494.981,348
93.9517894.4766894.991,378
93.9619094.4867395.001,407
93.9720194.4967795.011,437
93.9821394.5068195.021,467
93.9922594.5168695.031,496
94.0023794.5269095.041,526
94.0124994.5369595.051,556
94.0226194.5469995.061,585
94.0327394.5570495.071,615
94.0428494.5670895.081,644
94.0529694.5771395.091,674
94.0630894.5871795.101,704
94.0732094.5972195.111,733
94.0833294.6072695.121,763
94.0934494.6173095.131,793
94.1035694.6273595.141,822
94.1136794.6373995.151,852
94.1237994.6474495.161,882
94.1339194.6574895.171,911
94.1440394.6675395.181,941
94.1541594.6775795.191,970
94.1642794.6876195.202,000
94.1743994.6976695.212,030
94.1845094.7077095.222,059
94.1946294.7177595.232,089
94.2047494.7277995.242,119
94.2148694.7378495.252,148
94.2249894.7478895.262,178
94.2351094.7579395.272,207
94.2452194.7679795.282,237
94.2553394.7780195.292,267
94.2654594.7880695.302,296
94.2755794.79810
94.2856994.80815
94.2958194.81844
94.3059394.82874
94.3159794.83904
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Analysis - Failure NOAA 24-hr D 2 YR-C Rainfall=3.42" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 61
Summary for Pond 5P: BIORETENTION BASIN 1A
Inflow Area = 77,967 sf, 31.84% Impervious, Inflow Depth = 1.02" for 2 YR-C event
Inflow = 1.93 cfs @ 12.10 hrs, Volume= 6,616 cf
Outflow = 0.21 cfs @ 12.84 hrs, Volume= 6,616 cf, Atten= 89%, Lag= 44.5 min
Primary = 0.21 cfs @ 12.84 hrs, Volume= 6,616 cf
Routed to Pond 2P : Subsurface Infiltration Basin 1
Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs / 3
Automatic Starting Elev= 91.55' Surf.Area= 1,500 sf Storage= 2,325 cf
Peak Elev= 93.29' @ 12.83 hrs Surf.Area= 1,500 sf Storage= 4,929 cf (2,604 cf above start)
Plug-Flow detention time= 381.5 min calculated for 4,291 cf (65% of inflow)
Center-of-Mass det. time= 126.6 min ( 882.8 - 756.2 )
Volume Invert Avail.Storage Storage Description
#1 90.00' 8,250 cf Custom Stage Data (Prismatic) Listed below (Recalc)
Elevation (feet) Surf.Area (sq-ft) Inc.Store (cubic-feet) Cum.Store (cubic-feet)
90.00 1,500 0 0
95.50 1,500 8,250 8,250
Device Routing Invert Outlet Devices
#1 Device 3 91.00' 2.5" Vert. Orifice C= 0.600 Limited to weir flow at low heads
#2 Device 3 95.00' 48.0" x 48.0" Horiz. Grate C= 0.600
#3 Primary 87.48' 12.0" Round Culvert L= 28.0' RCP, groove end projecting, Ke= 0.200 Inlet / Outlet Invert= 87.48' / 87.00' S= 0.0171 ' /' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 0.79 sf
Primary OutFlow Max=0.21 cfs @ 12.84 hrs HW=93.29' TW=91.58' (Dynamic Tailwater)
3=Culvert (Passes 0.21 cfs of 5.90 cfs potential flow)
1=Orifice (Orifice Controls 0.21 cfs @ 6.29 fps)
2=Grate ( Controls 0.00 cfs)
Page 1206 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025
Analysis - Failure NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 62
Pond 5P: BIORETENTION BASIN 1A
Pond 5P: BIORETENTION BASIN 1A
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025 Page 63
Analysis - Failure NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 63
Pond 5P: BIORETENTION BASIN 1A
Stage-Area-Storage
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Analysis - Failure NOAA 24-hr D 2 YR-C Rainfall=3.42" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 64
Hydrograph for Pond 5P: BIORETENTION BASIN 1A
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Primary (cfs)
0.000.002,32591.550.00
2.000.012,33091.550.01
4.000.022,34891.570.02
6.000.032,36891.580.02
8.000.052,41491.610.04
10.000.092,52591.680.06
12.001.153,65992.440.15
14.000.094,61893.080.20
16.000.053,79892.530.16
18.000.043,11392.080.12
20.000.032,66191.770.08
22.000.032,44891.630.04
24.000.022,37891.590.03
26.000.002,32591.550.00
28.000.002,32591.550.00
30.000.002,32591.550.00
32.000.002,32591.550.00
34.000.002,32591.550.00
36.000.002,32591.550.00
38.000.002,32591.550.00
40.000.002,32591.550.00
42.000.002,32591.550.00
44.000.002,32591.550.00
46.000.002,32591.550.00
48.000.002,32591.550.00
50.000.002,32591.550.00
52.000.002,32591.550.00
54.000.002,32591.550.00
56.000.002,32591.550.00
58.000.002,32591.550.00
60.000.002,32591.550.00
62.000.002,32591.550.00
64.000.002,32591.550.00
66.000.002,32591.550.00
68.000.002,32591.550.00
70.000.002,32591.550.00
72.000.002,32591.550.00
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025
Analysis - Failure NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 65
Stage-Discharge for Pond 5P: BIORETENTION BASIN 1A
Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)
90.000.0092.600.17
90.050.0092.650.17
90.100.0092.700.18
90.150.0092.750.18
90.200.0092.800.18
90.250.0092.850.19
90.300.0092.900.19
90.350.0092.950.19
90.400.0093.000.20
90.450.0093.050.20
90.500.0093.100.20
90.550.0093.150.21
90.600.0093.200.21
90.650.0093.250.21
90.700.0093.300.22
90.750.0093.350.22
90.800.0093.400.22
90.850.0093.450.23
90.900.0093.500.23
90.950.0093.550.23
91.000.0093.600.24
91.050.0093.650.24
91.100.0093.700.24
91.150.0093.750.24
91.200.0093.800.25
91.250.0093.850.25
91.300.0093.900.25
91.350.0093.950.25
91.400.0094.000.26
91.450.0094.050.26
91.500.0094.100.26
91.550.0094.150.26
91.600.0494.200.27
91.650.0594.250.27
91.700.0694.300.27
91.750.0794.350.27
91.800.0894.400.28
91.850.0994.450.28
91.900.1094.500.28
91.950.1094.550.28
92.000.1194.600.29
92.050.1294.650.29
92.100.1294.700.29
92.150.1394.750.29
92.200.1394.800.30
92.250.1494.850.30
92.300.1494.900.30
92.350.1594.950.30
92.400.1595.000.30
92.450.1695.050.89
92.500.1695.101.96
92.550.1695.153.35
Elevation (feet)Primary (cfs)
95.204.99
95.256.86
95.308.74
95.358.80
95.408.86
95.458.92
95.508.97
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Analysis - Failure NOAA 24-hr D 2 YR-C Rainfall=3.42" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 66
Stage-Area-Storage for Pond 5P: BIORETENTION BASIN 1A
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
90.001,5000
90.101,500150
90.201,500300
90.301,500450
90.401,500600
90.501,500750
90.601,500900
90.701,5001,050
90.801,5001,200
90.901,5001,350
91.001,5001,500
91.101,5001,650
91.201,5001,800
91.301,5001,950
91.401,5002,100
91.501,5002,250
91.601,5002,400
91.701,5002,550
91.801,5002,700
91.901,5002,850
92.001,5003,000
92.101,5003,150
92.201,5003,300
92.301,5003,450
92.401,5003,600
92.501,5003,750
92.601,5003,900
92.701,5004,050
92.801,5004,200
92.901,5004,350
93.001,5004,500
93.101,5004,650
93.201,5004,800
93.301,5004,950
93.401,5005,100
93.501,5005,250
93.601,5005,400
93.701,5005,550
93.801,5005,700
93.901,5005,850
94.001,5006,000
94.101,5006,150
94.201,5006,300
94.301,5006,450
94.401,5006,600
94.501,5006,750
94.601,5006,900
94.701,5007,050
94.801,5007,200
94.901,5007,350
95.001,5007,500
95.101,5007,650
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
95.201,5007,800
95.301,5007,950
95.401,5008,100
95.501,5008,250
Page 1211 Download HTML
Analysis - Failure NOAA 24-hr D 2 YR-C Rainfall=3.42" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 67
Summary for Pond 7P: BIORENTION BASIN 2A
Inflow Area = 22,431 sf, 16.50% Impervious, Inflow Depth = 0.53" for 2 YR-C event Inflow = 0.30 cfs @ 12.09 hrs, Volume= 991 cf Outflow = 0.30 cfs @ 12.10 hrs, Volume= 944 cf, Atten= 1%, Lag= 0.5 min Primary = 0.30 cfs @ 12.10 hrs, Volume= 944 cf Routed to Pond 33P : INFILTRATION BASIN 2
Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs / 3 Peak Elev= 95.52' @ 12.10 hrs Surf.Area= 237 sf Storage= 174 cf
Plug-Flow detention time=68.2 min calculated for 944 cf (95% of inflow) Center-of-Mass det. time=38.9 min (795.6 - 756.7)
VolumeInvertAvail.StorageStorage Description
#194.30'307 cfCustom Stage Data (Prismatic)Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
94.306300
95.001487474
96.00319234307
DeviceRoutingInvertOutlet Devices
#1Device 394.80'2.5" Vert. Orifice C = 0.600Limited to weir flow at low heads
#2Device 395.50'48.0" x 48.0" Horiz. Grate C = 0.600
#3Primary91.80'12.0" Round Culvert\n L = 30.0' RCP, groove end projecting, Ke = 0.200\nInlet / Outlet Invert= $ 91.80' / 91.65' $ S = 0.0050' /' Cc = 0.900\n n = 0.012 Concrete pipe, finished, Flow Area= $ 0.79 $ sf
Primary OutFlow Max=0.29 cfs @ 12.10 hrs HW=95.52' TW=93.94' (Dynamic Tailwater)\n uparrow3=Culvert (Passes 0.29 cfs of 5.61 cfs potential flow)\n uparrow1=Orifice (Orifice Controls 0.13 cfs @ 3.78 fps)\n downarrow2=Grate (Weir Controls 0.16 cfs @ 0.48 fps)
Culvert
Page 1212 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025
Analysis - Failure NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 68
Pond 7P: BIORENTION BASIN 2A
Pond 7P: BIORENTION BASIN 2A
Page 1213 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025 as LLC Page 69
Analysis - Failure NO Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 7P: BIORENTION BASIN 2A
Page 1214 Download HTML
Analysis - Failure NOAA 24-hr D 2 YR-C Rainfall=3.42" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 70
Hydrograph for Pond 7P: BIORENTION BASIN 2A
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Primary (cfs)
0.000.00094.300.00
2.000.00294.330.00
4.000.001794.520.00
6.000.004394.770.00
8.000.015494.860.01
10.000.015794.880.01
12.000.1812295.280.10
14.000.015894.890.01
16.000.015594.870.01
18.000.015394.850.01
20.000.005394.850.00
22.000.005394.850.00
24.000.005294.840.00
26.000.004894.810.00
28.000.004794.800.00
30.000.004794.800.00
32.000.004794.800.00
34.000.004794.800.00
36.000.004794.800.00
38.000.004794.800.00
40.000.004794.800.00
42.000.004794.800.00
44.000.004794.800.00
46.000.004794.800.00
48.000.004794.800.00
50.000.004794.800.00
52.000.004794.800.00
54.000.004794.800.00
56.000.004794.800.00
58.000.004794.800.00
60.000.004794.800.00
62.000.004794.800.00
64.000.004794.800.00
66.000.004794.800.00
68.000.004794.800.00
70.000.004794.800.00
72.000.004794.800.00
Page 1215 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42"
Analysis - Failure NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Printed 12/19/2025
Page 71
Stage-Discharge for Pond 7P: BIORENTION BASIN 2A
Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)
94.300.0094.820.0095.340.11
94.310.0094.830.0095.350.11
94.320.0094.840.0095.360.11
94.330.0094.850.0095.370.11
94.340.0094.860.0195.380.11
94.350.0094.870.0195.390.11
94.360.0094.880.0195.400.12
94.370.0094.890.0195.410.12
94.380.0094.900.0295.420.12
94.390.0094.910.0295.430.12
94.400.0094.920.0295.440.12
94.410.0094.930.0395.450.12
94.420.0094.940.0395.460.12
94.430.0094.950.0395.470.12
94.440.0094.960.0495.480.12
94.450.0094.970.0495.490.13
94.460.0094.980.0595.500.13
94.470.0094.990.0595.510.18
94.480.0095.000.0595.520.28
94.490.0095.010.0595.530.40
94.500.0095.020.0695.540.55
94.510.0095.030.0695.550.72
94.520.0095.040.0695.560.90
94.530.0095.050.0695.571.10
94.540.0095.060.0695.581.32
94.550.0095.070.0795.591.55
94.560.0095.080.0795.601.79
94.570.0095.090.0795.612.05
94.580.0095.100.0795.622.31
94.590.0095.110.0795.632.59
94.600.0095.120.0895.642.88
94.610.0095.130.0895.653.18
94.620.0095.140.0895.663.49
94.630.0095.150.0895.673.81
94.640.0095.160.0895.684.14
94.650.0095.170.0895.694.48
94.660.0095.180.0995.704.83
94.670.0095.190.0995.715.18
94.680.0095.200.0995.725.55
94.690.0095.210.0995.735.92
94.700.0095.220.0995.746.30
94.710.0095.230.0995.756.45
94.720.0095.240.1095.766.47
94.730.0095.250.1095.776.48
94.740.0095.260.1095.786.50
94.750.0095.270.1095.796.52
94.760.0095.280.1095.806.53
94.770.0095.290.1095.816.55
94.780.0095.300.1095.826.56
94.790.0095.310.1095.836.58
94.800.0095.320.1195.846.59
94.810.0095.330.1195.856.61
Elevation (feet)Primary (cfs)
95.866.62
95.876.64
95.886.65
95.896.67
95.906.68
95.916.70
95.926.71
95.936.73
95.946.74
95.956.75
95.966.77
95.976.78
95.986.80
95.996.81
96.006.83
Page 1216 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025
Analysis - Failure NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 72
Stage-Area-Storage for Pond 7P: BIORENTION BASIN 2A
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
94.3063095.34206134
94.3265195.36210138
94.3468395.38213142
94.3670495.40216147
94.3873595.42220151
94.4075795.44223156
94.4278895.46227160
94.44801095.48230165
94.46821295.50234169
94.48851395.52237174
94.50871595.54240179
94.52901795.56244184
94.54921995.58247188
94.56952095.60251193
94.58972295.62254198
94.60992495.64257204
94.621022695.66261209
94.641042895.68264214
94.661073195.70268219
94.681093395.72271225
94.701123595.74275230
94.721143795.76278236
94.741163995.78281241
94.761194295.80285247
94.781214495.82288253
94.801244795.84292258
94.821264995.86295264
94.841295295.88298270
94.861315495.90302276
94.881335795.92305282
94.901366095.94309289
94.921386295.96312295
94.941416595.98316301
94.961436896.00319307
94.9814671
95.0014874
95.0215177
95.0415580
95.0615883
95.0816286
95.1016590
95.1216993
95.1417296
95.16175100
95.18179103
95.20182107
95.22186111
95.24189114
95.26192118
95.28196122
95.30199126
95.32203130
Page 1217 Download HTML
Analysis - Failure NOAA 24-hr D 2 YR-C Rainfall=3.42" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 73
Summary for Pond 8P: INFILTRATION BASIN 3
Page 1218 Download HTML
2 YR-C Rainfall=3.42" Printed 12/19/2025 Page 74
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025
Analysis - Failure NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 8P: INFILTRATION BASIN 3
Pond 8P: INFILTRATION BASIN 3
Page 1219 Download HTML
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Analysis - Failure NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 75
Pond 8P: INFILTRATION BASIN 3
Page 1220 Download HTML
Hydrograph for Pond 8P: INFILTRATION BASIN 3
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Primary (cfs)
0.000.002,30092.750.00
2.000.002,30092.750.00
4.000.002,30492.750.00
6.000.012,32892.770.00
8.000.022,37192.810.01
10.000.042,44892.880.03
12.000.172,66193.060.08
14.000.133,28093.600.14
16.000.052,94693.310.11
18.000.032,58293.000.06
20.000.022,44692.880.03
22.000.022,42092.850.02
24.000.012,40992.840.02
26.000.002,37592.820.01
28.000.002,35292.790.00
30.000.002,33992.780.00
32.000.002,33192.780.00
34.000.002,32692.770.00
36.000.002,32292.770.00
38.000.002,31992.770.00
40.000.002,31792.760.00
42.000.002,31592.760.00
44.000.002,31492.760.00
46.000.002,31392.760.00
48.000.002,31292.760.00
50.000.002,31192.760.00
52.000.002,31092.760.00
54.000.002,30992.760.00
56.000.002,30992.760.00
58.000.002,30892.760.00
60.000.002,30892.760.00
62.000.002,30892.760.00
64.000.002,30792.760.00
66.000.002,30792.760.00
68.000.002,30792.760.00
70.000.002,30692.760.00
72.000.002,30692.760.00
Page 1221 Download HTML
Analysis - Failure NOAA 24-hr D 2 YR-C Rainfall=3.42" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 77
Stage-Discharge for Pond 8P: INFILTRATION BASIN 3
Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)
90.750.0093.350.12
90.800.0093.400.12
90.850.0093.450.13
90.900.0093.500.13
90.950.0093.550.14
91.000.0093.600.14
91.050.0093.650.15
91.100.0093.700.15
91.150.0093.750.16
91.200.0093.800.16
91.250.0093.850.16
91.300.0093.900.17
91.350.0093.950.17
91.400.0094.000.18
91.450.0094.050.18
91.500.0094.100.18
91.550.0094.150.19
91.600.0094.200.19
91.650.0094.250.19
91.700.0094.300.20
91.750.0094.350.20
91.800.0094.400.20
91.850.0094.450.21
91.900.0094.500.21
91.950.0094.550.80
92.000.0094.601.87
92.050.0094.653.26
92.100.0094.704.90
92.150.0094.755.61
92.200.0094.805.74
92.250.0094.855.86
92.300.0094.905.98
92.350.0094.956.10
92.400.0095.006.22
92.450.00
92.500.00
92.550.00
92.600.00
92.650.00
92.700.00
92.750.00
92.800.00
92.850.02
92.900.03
92.950.05
93.000.06
93.050.07
93.100.08
93.150.09
93.200.10
93.250.10
93.300.11
Page 1222 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025
Analysis - Failure Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 78
Stage-Area-Storage for Pond 8P: INFILTRATION BASIN 3
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
90.751,150093.351,1502,990
90.801,1505793.401,1503,048
90.851,15011593.451,1503,105
90.901,15017393.501,1503,163
90.951,15023093.551,1503,220
91.001,15028893.601,1503,277
91.051,15034593.651,1503,335
91.101,15040293.701,1503,393
91.151,15046093.751,1503,450
91.201,15051893.801,1503,507
91.251,15057593.851,1503,565
91.301,15063293.901,1503,623
91.351,15069093.951,1503,680
91.401,15074894.001,1503,738
91.451,15080594.051,1503,795
91.501,15086394.101,1503,852
91.551,15092094.151,1503,910
91.601,15097794.201,1503,968
91.651,1501,03594.251,1504,025
91.701,1501,09394.301,1504,082
91.751,1501,15094.351,1504,140
91.801,1501,20794.401,1504,198
91.851,1501,26594.451,1504,255
91.901,1501,32394.501,1504,313
91.951,1501,38094.551,1504,370
92.001,1501,43894.601,1504,427
92.051,1501,49594.651,1504,485
92.101,1501,55294.701,1504,543
92.151,1501,61094.751,1504,600
92.201,1501,66894.801,1504,657
92.251,1501,72594.851,1504,715
92.301,1501,78294.901,1504,773
92.351,1501,84094.951,1504,830
92.401,1501,89895.001,1504,888
92.451,1501,955
92.501,1502,013
92.551,1502,070
92.601,1502,127
92.651,1502,185
92.701,1502,243
92.751,1502,300
92.801,1502,357
92.851,1502,415
92.901,1502,473
92.951,1502,530
93.001,1502,588
93.051,1502,645
93.101,1502,702
93.151,1502,760
93.201,1502,818
93.251,1502,875
93.301,1502,932
Page 1223 Download HTML
Analysis - Failure NOAA 24-hr D 2 YR-C Rainfall=3.42" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 79
Summary for Pond 33P: INFILTRATION BASIN 2
Inflow Area = 30,707 sf, 39.00% Impervious, Inflow Depth = 1.23" for 2 YR-C event Inflow = 0.39 cfs @ 12.10 hrs, Volume= 3,138 cf Outflow = 0.10 cfs @ 13.37 hrs, Volume= 3,130 cf, Atten=73%, Lag=76.4 min Primary = 0.10 cfs @ 13.37 hrs, Volume= 3,130 cf Routed to Link 33L : POA 2 Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs / 3 Automatic Starting Elev= 93.65' Surf.Area= 1,442 sf Storage= 1,902 cf Peak Elev= 94.16' @ 13.37 hrs Surf.Area= 1,728 sf Storage= 2,708 cf (806 cf above start) Plug-Flow detention time= 606.6 min calculated for 1,228 cf (39% of inflow) Center-of-Mass det. time= 125.9 min (987.0 - 861.2)
VolumeInvertAvail.StorageStorage Description
#191.65'4,378 cfCustom Stage Data (Prismatic)Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
91.6552000
92.00651205205
93.001,0948731,077
94.001,6291,3622,439
95.002,2491,9394,378
Device Routing Invert Outlet Devices #1 Device 3 93.65' 2.5" Vert. Orifice C= 0.600 Limited to weir flow at low heads #2 Device 3 94.70' 48.0" x 48.0" Horiz. Grate C= 0.600 #3 Primary 93.65' 12.0" Round Culvert L= 17.0' RCP, groove end projecting, Ke= 0.200 Inlet / Outlet Invert= 93.65' / 93.50' S= 0.0088'/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 0.79 sf Primary OutFlow Max=0.10 cfs @ 13.37 hrs HW=94.16' TW=0.00' (Dynamic Tailwater) 3=Culvert (Passes 0.10 cfs of 0.87 cfs potential flow) 1=Orifice (Orifice Controls 0.10 cfs @ 3.07 fps) 2=Grate (Controls 0.00 cfs)
Pond 33P: INFILTRATION BASIN 2
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NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025 as LLC Page 80
Analysis - Failure NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 33P: INFILTRATION BASIN 2
Pond 33P: INFILTRATION BASIN 2
Page 1225 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025 as LLC Page 81
Analysis - Failure NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 33P: INFILTRATION BASIN 2
Page 1226 Download HTML
Analysis - Failure NOAA 24-hr D 2 YR-C Rainfall=3.42" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 82
Hydrograph for Pond 33P: INFILTRATION BASIN 2
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Primary (cfs)
0.000.001,90293.650.00
2.000.001,90293.650.00
4.000.001,90593.650.00
6.000.011,92793.670.00
8.000.021,99193.710.01
10.000.032,06393.760.02
12.000.182,28393.900.06
14.000.082,67194.140.10
16.000.062,46694.020.08
18.000.042,27393.900.06
20.000.022,11893.800.03
22.000.012,05893.760.02
24.000.012,03493.740.01
26.000.001,99693.710.01
28.000.001,97093.700.00
30.000.001,95493.690.00
32.000.001,94493.680.00
34.000.001,93793.670.00
36.000.001,93293.670.00
38.000.001,92893.670.00
40.000.001,92593.670.00
42.000.001,92393.660.00
44.000.001,92193.660.00
46.000.001,91993.660.00
48.000.001,91893.660.00
50.000.001,91793.660.00
52.000.001,91693.660.00
54.000.001,91593.660.00
56.000.001,91493.660.00
58.000.001,91393.660.00
60.000.001,91393.660.00
62.000.001,91293.660.00
64.000.001,91293.660.00
66.000.001,91193.660.00
68.000.001,91193.660.00
70.000.001,91093.660.00
72.000.001,91093.660.00
Page 1227 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025 Page 83
Analysis - Failure NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 33P: INFILTRATION BASIN 2
Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)
91.650.0092.690.0093.730.01
91.670.0092.710.0093.750.02
91.690.0092.730.0093.770.02
91.710.0092.750.0093.790.03
91.730.0092.770.0093.810.04
91.750.0092.790.0093.830.05
91.770.0092.810.0093.850.05
91.790.0092.830.0093.870.06
91.810.0092.850.0093.890.06
91.830.0092.870.0093.910.06
91.850.0092.890.0093.930.07
91.870.0092.910.0093.950.07
91.890.0092.930.0093.970.08
91.910.0092.950.0093.990.08
91.930.0092.970.0094.010.08
91.950.0092.990.0094.030.09
91.970.0093.010.0094.050.09
91.990.0093.030.0094.070.09
92.010.0093.050.0094.090.10
92.030.0093.070.0094.110.10
92.050.0093.090.0094.130.10
92.070.0093.110.0094.150.10
92.090.0093.130.0094.170.11
92.110.0093.150.0094.190.11
92.130.0093.170.0094.210.11
92.150.0093.190.0094.230.11
92.170.0093.210.0094.250.12
92.190.0093.230.0094.270.12
92.210.0093.250.0094.290.12
92.230.0093.270.0094.310.12
92.250.0093.290.0094.330.12
92.270.0093.310.0094.350.13
92.290.0093.330.0094.370.13
92.310.0093.350.0094.390.13
92.330.0093.370.0094.410.13
92.350.0093.390.0094.430.13
92.370.0093.410.0094.450.14
92.390.0093.430.0094.470.14
92.410.0093.450.0094.490.14
92.430.0093.470.0094.510.14
92.450.0093.490.0094.530.14
92.470.0093.510.0094.550.15
92.490.0093.530.0094.570.15
92.510.0093.550.0094.590.15
92.530.0093.570.0094.610.15
92.550.0093.590.0094.630.15
92.570.0093.610.0094.650.16
92.590.0093.630.0094.670.16
92.610.0093.650.0094.690.16
92.630.0093.670.0094.710.21
92.650.0093.690.0094.730.43
92.670.0093.710.0194.750.75
Elevation (feet)Primary (cfs)
94.771.13
94.791.58
94.812.08
94.832.62
94.853.21
94.873.26
94.893.31
94.913.35
94.933.39
94.953.41
94.973.43
94.993.43
Page 1228 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025
YR-C Rainfall=3.42" Printed 12/19/2025 Page 84
Analysis - Failure NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Area-Storage for Pond 33P: INFILTRATION BASIN 2
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
91.655200
91.7053926
91.7555754
91.8057682
91.85595111
91.90614142
91.95632173
92.00651205
92.05673238
92.10695272
92.15717308
92.20740344
92.25762382
92.30784420
92.35806460
92.40828501
92.45850543
92.50873586
92.55895630
92.60917675
92.65939722
92.70961769
92.75983818
92.801,005867
92.851,028918
92.901,050970
92.951,0721,023
93.001,0941,077
93.051,1211,133
93.101,1481,190
93.151,1741,248
93.201,2011,307
93.251,2281,368
93.301,2551,430
93.351,2811,493
93.401,3081,558
93.451,3351,624
93.501,3621,691
93.551,3881,760
93.601,4151,830
93.651,4421,902
93.701,4691,974
93.751,4952,048
93.801,5222,124
93.851,5492,201
93.901,5762,279
93.951,6022,358
94.001,6292,439
94.051,6602,521
94.101,6912,605
94.151,7222,690
94.201,7532,777
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
94.251,7842,866
94.301,8152,956
94.351,8463,047
94.401,8773,140
94.451,9083,235
94.501,9393,331
94.551,9703,429
94.602,0013,528
94.652,0323,629
94.702,0633,731
94.752,0943,835
94.802,1253,941
94.852,1564,048
94.902,1874,156
94.952,2184,266
95.002,2494,378
Page 1229 Download HTML
Analysis - Failure NOAA 24-hr D 2 YR-C Rainfall=3.42" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 85
Summary for Pond 42P: BIORENTION BASIN 3A
Inflow Area = 35,171 sf, 15.78% Impervious, Inflow Depth = 0.51" for 2 YR-C event
Inflow = 0.45 cfs @ 12.09 hrs, Volume= 1,487 cf
Outflow = 0.12 cfs @ 12.22 hrs, Volume= 1,388 cf, Atten= 74%, Lag= 7.9 min
Primary = 0.12 cfs @ 12.22 hrs, Volume= 1,388 cf
Routed to Pond 8P : INEIL TRATION BASIN 3
Routed to Pond 8P : INFILTRATION BASIN 3
Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs / Peak Elevation = 94.43' @ 12.22 hrs Surf.Area = 808 sf Storage = 439 cf Plug-Flow detention time = 109.8 min calculated for 1,387 cf (93% of inflow) Center-of-Mass det. time = 70.4 min (827.3 - 757.0)
VolumeInvertAvail.StorageStorage Description
#193.30'1,041 cfCustom Stage Data (Prismatic)Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
93.307700
94.00417173173
95.001,3198681,041
DeviceRoutingInvertOutlet Devices
#1Device 393.80'2.5" Vert. Orifice C= 0.600 Limited to weir flow at low heads
#2Device 394.50'48.0" x 48.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads
#3Primary90.80'12.0" Round Culvert L= 11.0' RCP, groove end projecting, Ke= 0.200 Inlet / Outlet Invert= 90.80' / 90.75' S= 0.0045 ' /' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 0.79 sf
Primary OutFlow Max=0.12 cfs @ 12.22 hrs HW=94.43' TW=93.15' (Dynamic Tailwater) 3=Culvert (Passes 0.12 cfs of 5.35 cfs potential flow) 1=Orifice (Orifice Controls 0.12 cfs @ 3.50 fps) 2=Grate ( Controls 0.00 cfs)
Page 1230 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025 Page 86
Analysis - Failure NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 42P: BIORENTION BASIN 3A
Pond 42P: BIORENTION BASIN 3A
Page 1231 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025 as LLC Page 87
Analysis - Failure NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 42P: BIORENTION BASIN 3A
Page 1232 Download HTML
Analysis - Failure NOAA 24-hr D 2 YR-C Rainfall=3.42" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 88
Hydrograph for Pond 42P: BIORENTION BASIN 3A
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Primary (cfs)
0.000.00093.300.00
2.000.00393.340.00
4.000.002693.500.00
6.000.016493.680.00
8.000.0111793.850.01
10.000.0213393.900.02
12.000.2829494.230.09
14.000.0215793.960.04
16.000.0112893.880.01
18.000.0112293.870.01
20.000.0112093.860.01
22.000.0111993.860.01
24.000.0111893.860.01
26.000.0010593.820.00
28.000.0010293.810.00
30.000.0010193.810.00
32.000.0010193.810.00
34.000.0010193.800.00
36.000.0010093.800.00
38.000.0010093.800.00
40.000.0010093.800.00
42.000.0010093.800.00
44.000.0010093.800.00
46.000.0010093.800.00
48.000.0010093.800.00
50.000.0010093.800.00
52.000.0010093.800.00
54.000.0010093.800.00
56.000.0010093.800.00
58.000.0010093.800.00
60.000.0010093.800.00
62.000.0010093.800.00
64.000.0010093.800.00
66.000.0010093.800.00
68.000.0010093.800.00
70.000.0010093.800.00
72.000.009993.800.00
Page 1233 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025 Page 89
Analysis - Failure NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 42P: BIORENTION BASIN 3A
Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)
93.300.0093.820.0094.340.11
93.310.0093.830.0094.350.11
93.320.0093.840.0094.360.11
93.330.0093.850.0094.370.11
93.340.0093.860.0194.380.11
93.350.0093.870.0194.390.11
93.360.0093.880.0194.400.12
93.370.0093.890.0194.410.12
93.380.0093.900.0294.420.12
93.390.0093.910.0294.430.12
93.400.0093.920.0294.440.12
93.410.0093.930.0394.450.12
93.420.0093.940.0394.460.12
93.430.0093.950.0394.470.12
93.440.0093.960.0494.480.12
93.450.0093.970.0494.490.13
93.460.0093.980.0594.500.13
93.470.0093.990.0594.510.18
93.480.0094.000.0594.520.28
93.490.0094.010.0594.530.40
93.500.0094.020.0694.540.55
93.510.0094.030.0694.550.72
93.520.0094.040.0694.560.90
93.530.0094.050.0694.571.10
93.540.0094.060.0694.581.32
93.550.0094.070.0794.591.55
93.560.0094.080.0794.601.79
93.570.0094.090.0794.612.05
93.580.0094.100.0794.622.31
93.590.0094.110.0794.632.59
93.600.0094.120.0894.642.88
93.610.0094.130.0894.653.18
93.620.0094.140.0894.663.49
93.630.0094.150.0894.673.81
93.640.0094.160.0894.684.14
93.650.0094.170.0894.694.48
93.660.0094.180.0994.704.83
93.670.0094.190.0994.715.18
93.680.0094.200.0994.725.55
93.690.0094.210.0994.735.92
93.700.0094.220.0994.746.30
93.710.0094.230.0994.756.69
93.720.0094.240.1094.766.70
93.730.0094.250.1094.776.72
93.740.0094.260.1094.786.74
93.750.0094.270.1094.796.75
93.760.0094.280.1094.806.77
93.770.0094.290.1094.816.78
93.780.0094.300.1094.826.80
93.790.0094.310.1094.836.82
93.800.0094.320.1194.846.83
93.810.0094.330.1194.856.85
Elevation (feet)Primary (cfs)
94.866.87
94.876.88
94.886.90
94.896.92
94.906.93
94.916.95
94.926.96
94.936.98
94.947.00
94.957.01
94.967.03
94.977.04
94.987.06
94.997.07
95.007.09
Page 1234 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025
Analysis - Failure NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 90
Stage-Area-Storage for Pond 42P: BIORENTION BASIN 3A
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
93.3077094.34724367
93.3287294.36742381
93.3496394.38760396
93.36106594.40778412
93.38116894.42796428
93.401261094.44814444
93.421351394.46832460
93.441451694.48850477
93.461551994.50868494
93.481642294.52886512
93.501742594.54904530
93.521842994.56922548
93.541943294.58940566
93.562033694.60958585
93.582134194.62976605
93.602234594.64994625
93.622325094.661,012645
93.642425494.681,030665
93.662525994.701,048686
93.682626494.721,066707
93.702717094.741,084728
93.722817594.761,103750
93.742918194.781,121773
93.763008794.801,139795
93.783109394.821,157818
93.803209994.841,175841
93.8233010694.861,193865
93.8433911294.881,211889
93.8634911994.901,229914
93.8835912694.921,247938
93.9036813494.941,265963
93.9237814194.961,283989
93.9438814994.981,3011,015
93.9639815795.001,3191,041
93.98407165
94.00417173
94.02435181
94.04453190
94.06471200
94.08489209
94.10507219
94.12525229
94.14543240
94.16561251
94.18579263
94.20597274
94.22615286
94.24633299
94.26652312
94.28670325
94.30688339
94.32706353
Page 1235 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025 as LLC Page 91
Analysis - Failure NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Link 32L: POA1
Inflow Area = 80,967 sf, 34.36% Impervious, Inflow Depth = 1.10" for 2 YR-C event Inflow = 0.42 cfs @ 12.10 hrs, Volume = 7,413 cf Primary = 0.42 cfs @ 12.10 hrs, Volume = 7,413 cf, Atten = 0%, Lag = 0.0 min
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 32L: POA1
Page 1236 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025
Analysis - Failure Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 92
Hydrograph for Link 32L: POA1
Time (hours)Inflow (cfs)Elevation (feet)Primary (cfs)
0.000.000.000.00
1.000.000.000.00
2.000.010.000.01
3.000.010.000.01
4.000.020.000.02
5.000.020.000.02
6.000.030.000.03
7.000.030.000.03
8.000.040.000.04
9.000.050.000.05
10.000.070.000.07
11.000.100.000.10
12.000.300.000.30
13.000.240.000.24
14.000.210.000.21
15.000.190.000.19
16.000.170.000.17
17.000.140.000.14
18.000.120.000.12
19.000.100.000.10
20.000.080.000.08
21.000.060.000.06
22.000.050.000.05
23.000.040.000.04
24.000.030.000.03
25.000.000.000.00
26.000.000.000.00
27.000.000.000.00
28.000.000.000.00
29.000.000.000.00
30.000.000.000.00
31.000.000.000.00
32.000.000.000.00
33.000.000.000.00
34.000.000.000.00
35.000.000.000.00
36.000.000.000.00
37.000.000.000.00
38.000.000.000.00
39.000.000.000.00
40.000.000.000.00
41.000.000.000.00
42.000.000.000.00
43.000.000.000.00
44.000.000.000.00
45.000.000.000.00
46.000.000.000.00
47.000.000.000.00
48.000.000.000.00
49.000.000.000.00
50.000.000.000.00
51.000.000.000.00
Time (hours)Inflow (cfs)Elevation (feet)Primary (cfs)
52.000.000.000.00
53.000.000.000.00
54.000.000.000.00
55.000.000.000.00
56.000.000.000.00
57.000.000.000.00
58.000.000.000.00
59.000.000.000.00
60.000.000.000.00
61.000.000.000.00
62.000.000.000.00
63.000.000.000.00
64.000.000.000.00
65.000.000.000.00
66.000.000.000.00
67.000.000.000.00
68.000.000.000.00
69.000.000.000.00
70.000.000.000.00
71.000.000.000.00
72.000.000.000.00
Page 1237 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025 as LLC Page 93
Analysis - Failure NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Link 33L: POA 2
Inflow Area = 30,707 sf, 39.00% Impervious, Inflow Depth > 1.22" for 2 YR-C event Inflow = 0.10 cfs @ 13.37 hrs, Volume= 3,130 cf Primary = 0.10 cfs @ 13.37 hrs, Volume= 3,130 cf, Atten=0%, Lag=0.0 min
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 33L: POA 2
Page 1238 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025
Analysis - Failure NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 94
Hydrograph for Link 33L: POA 2
Time (hours)Inflow (cfs)Elevation (feet)Primary (cfs)
0.000.000.000.00
1.000.000.000.00
2.000.000.000.00
3.000.000.000.00
4.000.000.000.00
5.000.000.000.00
6.000.000.000.00
7.000.000.000.00
8.000.010.000.01
9.000.010.000.01
10.000.020.000.02
11.000.030.000.03
12.000.060.000.06
13.000.100.000.10
14.000.100.000.10
15.000.090.000.09
16.000.080.000.08
17.000.070.000.07
18.000.060.000.06
19.000.050.000.05
20.000.030.000.03
21.000.020.000.02
22.000.020.000.02
23.000.020.000.02
24.000.010.000.01
25.000.010.000.01
26.000.010.000.01
27.000.010.000.01
28.000.000.000.00
29.000.000.000.00
30.000.000.000.00
31.000.000.000.00
32.000.000.000.00
33.000.000.000.00
34.000.000.000.00
35.000.000.000.00
36.000.000.000.00
37.000.000.000.00
38.000.000.000.00
39.000.000.000.00
40.000.000.000.00
41.000.000.000.00
42.000.000.000.00
43.000.000.000.00
44.000.000.000.00
45.000.000.000.00
46.000.000.000.00
47.000.000.000.00
48.000.000.000.00
49.000.000.000.00
50.000.000.000.00
51.000.000.000.00
Time (hours)Inflow (cfs)Elevation (feet)Primary (cfs)
52.000.000.000.00
53.000.000.000.00
54.000.000.000.00
55.000.000.000.00
56.000.000.000.00
57.000.000.000.00
58.000.000.000.00
59.000.000.000.00
60.000.000.000.00
61.000.000.000.00
62.000.000.000.00
63.000.000.000.00
64.000.000.000.00
65.000.000.000.00
66.000.000.000.00
67.000.000.000.00
68.000.000.000.00
69.000.000.000.00
70.000.000.000.00
71.000.000.000.00
72.000.000.000.00
Page 1239 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025 as LLC Page 95
Analysis - Failure NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Link 34L: POA 3
Inflow Area = 43,883 sf, 32.50% Impervious, Inflow Depth > 1.01" for 2 YR-C event Inflow = 0.14 cfs @ 13.84 hrs, Volume= 3,691 cf Primary = 0.14 cfs @ 13.84 hrs, Volume= 3,691 cf, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 34L: POA 3
Page 1240 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 12/19/2025
Analysis - Failure NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
R-C Rainfall=3.42" Printed 12/19/2025 Page 96
Hydrograph for Link 34L: POA 3
Time (hours)Inflow (cfs)Elevation (feet)Primary (cfs)
0.000.000.000.00
1.000.000.000.00
2.000.000.000.00
3.000.000.000.00
4.000.000.000.00
5.000.000.000.00
6.000.000.000.00
7.000.000.000.00
8.000.010.000.01
9.000.020.000.02
10.000.030.000.03
11.000.040.000.04
12.000.080.000.08
13.000.130.000.13
14.000.140.000.14
15.000.130.000.13
16.000.110.000.11
17.000.090.000.09
18.000.060.000.06
19.000.040.000.04
20.000.030.000.03
21.000.020.000.02
22.000.020.000.02
23.000.020.000.02
24.000.020.000.02
25.000.010.000.01
26.000.010.000.01
27.000.010.000.01
28.000.000.000.00
29.000.000.000.00
30.000.000.000.00
31.000.000.000.00
32.000.000.000.00
33.000.000.000.00
34.000.000.000.00
35.000.000.000.00
36.000.000.000.00
37.000.000.000.00
38.000.000.000.00
39.000.000.000.00
40.000.000.000.00
41.000.000.000.00
42.000.000.000.00
43.000.000.000.00
44.000.000.000.00
45.000.000.000.00
46.000.000.000.00
47.000.000.000.00
48.000.000.000.00
49.000.000.000.00
50.000.000.000.00
51.000.000.000.00
Time (hours)Inflow (cfs)Elevation (feet)Primary (cfs)
52.000.000.000.00
53.000.000.000.00
54.000.000.000.00
55.000.000.000.00
56.000.000.000.00
57.000.000.000.00
58.000.000.000.00
59.000.000.000.00
60.000.000.000.00
61.000.000.000.00
62.000.000.000.00
63.000.000.000.00
64.000.000.000.00
65.000.000.000.00
66.000.000.000.00
67.000.000.000.00
68.000.000.000.00
69.000.000.000.00
70.000.000.000.00
71.000.000.000.00
72.000.000.000.00
Page 1241 Download HTML
Analysis - Failure NOAA 24-hr D 10 YR-C Rainfall=5.38" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 97
Time span=0.00-72.00 hrs, dt=0.01 hrs, 7201 points x 3 Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method
Subcatchment2S: DA-P1 PERVOUSRunoff Area=1.220 ac 0.00% Impervious Runoff Depth=0.28" Flow Length=525' Tc=14.2 min CN=39/0 Runoff=0.06 cfs 1,255 cf
Subcatchment3S: DA-P3 PERVOUSRunoff Area=0.680 ac 0.00% Impervious Runoff Depth=0.28" Flow Length=363' Tc=11.5 min CN=39/0 Runoff=0.04 cfs 700 cf
Subcatchment4S: DA-P2 PERVOUSRunoff Area=0.430 ac 0.00% Impervious Runoff Depth=0.28" Flow Length=168' Slope=0.0300 /" Tc=8.7 min CN=39/0 Runoff=0.02 cfs 442 cf
Subcatchment5S: Typ. RoofRunoff Area=1,850 sf 100.00% Impervious Runoff Depth=5.14" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.24 cfs 793 cf
Subcatchment6S: DA-P3 IMPERVOUSRunoff Area=0.200 ac 100.00% Impervious Runoff Depth=5.14" Flow Length=155' Tc=4.3 min CN=0/98 Runoff=0.93 cfs 3,734 cf
Subcatchment7S: DA-P2 IMPERVOUSRunoff Area=0.190 ac 100.00% Impervious Runoff Depth=5.14" Flow Length=172' Tc=4.3 min CN=0/98 Runoff=0.89 cfs 3,547 cf
Subcatchment8S: DA-P1 IMPERVOUSRunoff Area=0.400 ac 100.00% Impervious Runoff Depth=5.14" Flow Length=372' Slope=0.0200 /" Tc=2.5 min CN=0/98 Runoff=2.11 cfs 7,467 cf
Subcatchment14S: LOT 11 RoofRunoff Area=3,000 sf 100.00% Impervious Runoff Depth=5.14" Flow Length=40' Tc=0.3 min CN=0/98 Runoff=0.39 cfs 1,286 cf
Subcatchment16S: Typ. RoofRunoff Area=1,850 sf 100.00% Impervious Runoff Depth=5.14" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.24 cfs 793 cf
Subcatchment17S: Typ. RoofRunoff Area=1,850 sf 100.00% Impervious Runoff Depth=5.14" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.24 cfs 793 cf
Subcatchment18S: Typ. RoofRunoff Area=1,850 sf 100.00% Impervious Runoff Depth=5.14" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.24 cfs 793 cf
Subcatchment35S: Typ. RoofRunoff Area=1,850 sf 100.00% Impervious Runoff Depth=5.14" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.24 cfs 793 cf
Subcatchment36S: Typ. RoofRunoff Area=1,850 sf 100.00% Impervious Runoff Depth=5.14" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.24 cfs 793 cf
Subcatchment37S: Typ. RoofRunoff Area=1,850 sf 100.00% Impervious Runoff Depth=5.14" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.24 cfs 793 cf
Subcatchment38S: Typ. RoofRunoff Area=1,850 sf 100.00% Impervious Runoff Depth=5.14" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.24 cfs 793 cf
Subcatchment39S: Typ. RoofRunoff Area=1,850 sf 100.00% Impervious Runoff Depth=5.14" Flow Length=45' Tc=0.4 min CN=0/98 Runoff=0.24 cfs 793 cf
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Analysis - Failure NOAA 24-hr D 10 YR-C Rainfall=5.38" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 98
Pond 2P: Subsurface Infiltration Basin 1Peak Elev=91.60' Storage=0.141 cf Inflow=0.62 cfs 13,179 cf Outflow=0.62 cfs 13,179 cf
Pond 3P: PERVOUS PAVEMENT 2BPeak Elev=94.84' Storage=975 cf Inflow=0.89 cfs 3,547 cf Outflow=0.58 cfs 3,543 cf
Pond 4P: PERVOUS PAVEMENT 3BPeak Elev=94.85' Storage=951 cf Inflow=0.93 cfs 3,734 cf Outflow=0.67 cfs 3,730 cf
Pond 5P: BIORETENTION BASIN 1APeak Elev=94.67' Storage=7,004 cf Inflow=3.06 cfs 11,893 cf Outflow=0.29 cfs 11,894 cf
Pond 7P: BIORENTION BASIN 2APeak Elev=95.54' Storage=178 cf Inflow=0.48 cfs 2,028 cf Outflow=0.48 cfs 1,981 cf
Pond 8P: INFILTRATION BASIN 3Peak Elev=94.21' Storage=3,979 cf Inflow=0.93 cfs 6,708 cf Outflow=0.19 cfs 6,702 cf
Pond 33P: INFILTRATION BASIN 2Peak Elev=94.58' Storage=3,488 cf Inflow=0.74 cfs 5,524 cf Outflow=0.15 cfs 5,515 cf
Pond 42P: BIORENTION BASIN 3APeak Elev=94.55' Storage=538 cf Inflow=0.72 cfs 3,078 cf Outflow=0.71 cfs 2,978 cf
Link 32L: POA1Inflow=0.62 cfs 13,179 cf Primary=0.62 cfs 13,179 cf
Link 33L: POA 2Inflow=0.15 cfs 5,515 cf Primary=0.15 cfs 5,515 cf
Link 34L: POA 3Inflow=0.19 cfs 6,702 cf Primary=0.19 cfs 6,702 cf
Total Runoff Area = 155,557 sf Runoff Volume = 25,565 cf Average Runoff Depth = 1.97" 65.25% Pervious = 101,495 sf 34.75% Impervious = 54,062 sf
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Analysis - Failure NOAA 24-hr D 10 YR-C Rainfall=5.38" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 99
Summary for Subcatchment 2S: DA-P1 PERVIOUS
Runoff = 0.06 cfs @ 13.07 hrs, Volume= Routed to Pond 5P : BIORETENTION BASIN 1A 1,255 cf, Depth= 0.28"
1,255 cf, Depth = 0.28
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-C Rainfall=5.38"
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Analysis - Failure NOAA 24-hr D 10 YR-C Rainfall=5.38" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 100
Hydrograph for Subcatchment 2S: DA-P1 PERVIOUS
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.130.000.000.00
4.000.280.000.000.00
6.000.460.000.000.00
8.000.700.000.000.00
10.001.070.000.000.00
12.002.580.000.000.00
14.004.310.080.000.05
16.004.680.140.000.03
18.004.920.180.000.02
20.005.100.220.000.02
22.005.250.250.000.02
24.005.380.280.000.02
26.005.380.280.000.00
28.005.380.280.000.00
30.005.380.280.000.00
32.005.380.280.000.00
34.005.380.280.000.00
36.005.380.280.000.00
38.005.380.280.000.00
40.005.380.280.000.00
42.005.380.280.000.00
44.005.380.280.000.00
46.005.380.280.000.00
48.005.380.280.000.00
50.005.380.280.000.00
52.005.380.280.000.00
54.005.380.280.000.00
56.005.380.280.000.00
58.005.380.280.000.00
60.005.380.280.000.00
62.005.380.280.000.00
64.005.380.280.000.00
66.005.380.280.000.00
68.005.380.280.000.00
70.005.380.280.000.00
72.005.380.280.000.00
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Analysis - Failure NOAA 24-hr D 10 YR-C Rainfall=5.38" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 101
Summary for Subcatchment 3S: DA-P3 PERVIOUS
Runoff = 0.04 cfs @ 12.98 hrs, Volume= Routed to Pond 42P : BIORENTION BASIN 3A
700 cf, Depth= 0.28"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-C Rainfall=5.38"
Area (ac) CN Description
0.680 39 >75% Grass cover, Good, HSG A
0.680 39 100.00% Pervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
9.0 83 0.0400 0.15 Sheet Flow, Grass: Dense n= 0.240 P2= 3.42" Using McCuen-Spiess flow length
0.2 10 0.0240 1.08 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps
2.2 270 2.00 Direct Entry, Pioe Flow
11.5 363 Total
Subcatchment 3S: DA-P3 PERVIOUS
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Analysis - Failure NOAA 24-hr D 10 YR-C Rainfall=5.38" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 102
Hydrograph for Subcatchment 3S: DA-P3 PERVIOUS
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.130.000.000.00
4.000.280.000.000.00
6.000.460.000.000.00
8.000.700.000.000.00
10.001.070.000.000.00
12.002.580.000.000.00
14.004.310.080.000.03
16.004.680.140.000.02
18.004.920.180.000.01
20.005.100.220.000.01
22.005.250.250.000.01
24.005.380.280.000.01
26.005.380.280.000.00
28.005.380.280.000.00
30.005.380.280.000.00
32.005.380.280.000.00
34.005.380.280.000.00
36.005.380.280.000.00
38.005.380.280.000.00
40.005.380.280.000.00
42.005.380.280.000.00
44.005.380.280.000.00
46.005.380.280.000.00
48.005.380.280.000.00
50.005.380.280.000.00
52.005.380.280.000.00
54.005.380.280.000.00
56.005.380.280.000.00
58.005.380.280.000.00
60.005.380.280.000.00
62.005.380.280.000.00
64.005.380.280.000.00
66.005.380.280.000.00
68.005.380.280.000.00
70.005.380.280.000.00
72.005.380.280.000.00
Page 1247 Download HTML
Analysis - Failure NOAA 24-hr D 10 YR-C Rainfall=5.38" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 103
Summary for Subcatchment 4S: DA-P2 PERVIOUS
Runoff = 0.02 cfs @ 12.87 hrs, Volume= Routed to Pond 7P : BIORENTION BASIN 2A
442 cf, Depth= 0.28"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-C Rainfall=5.38"
Area (ac) CN Description
0.430 39 >75% Grass cover, Good, HSG A
0.430 39 100.00% Pervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
7.8 60 0.0300 0.13 Sheet Flow, Grass: Dense n= 0.240 P2= 3.42"
0.9 108 2.00 Direct Entry, Pipe Flow
8.7 168 Total
Subcatchment 4S: DA-P2 PERVIOUS
Subcatchment 4S: DA-P2 PERVIOUS
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Analysis - Failure NOAA 24-hr D 10 YR-C Rainfall=5.38" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 104
Hydrograph for Subcatchment 4S: DA-P2 PERVIOUS
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.130.000.000.00
4.000.280.000.000.00
6.000.460.000.000.00
8.000.700.000.000.00
10.001.070.000.000.00
12.002.580.000.000.00
14.004.310.080.000.02
16.004.680.140.000.01
18.004.920.180.000.01
20.005.100.220.000.01
22.005.250.250.000.01
24.005.380.280.000.01
26.005.380.280.000.00
28.005.380.280.000.00
30.005.380.280.000.00
32.005.380.280.000.00
34.005.380.280.000.00
36.005.380.280.000.00
38.005.380.280.000.00
40.005.380.280.000.00
42.005.380.280.000.00
44.005.380.280.000.00
46.005.380.280.000.00
48.005.380.280.000.00
50.005.380.280.000.00
52.005.380.280.000.00
54.005.380.280.000.00
56.005.380.280.000.00
58.005.380.280.000.00
60.005.380.280.000.00
62.005.380.280.000.00
64.005.380.280.000.00
66.005.380.280.000.00
68.005.380.280.000.00
70.005.380.280.000.00
72.005.380.280.000.00
Page 1249 Download HTML
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 12/19/2025 ons LLC Page 105
Analysis - Failure NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 5S: Typ. Roof
Runoff = 0.24 cfs @ 12.09 hrs, Volume= 793 cf, Depth= 5.14" Routed to Pond 5P : BIORETENTION BASIN 1A
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-C Rainfall=5.38"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
2.00 Direct Entry, Pipe Flow
Subcatchment 5S: Typ. Roof
Page 1250 Download HTML
Hydrograph for Subcatchment 5S: Typ. Roof
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.130.000.030.00
4.000.280.000.130.00
6.000.460.000.280.00
8.000.700.000.500.01
10.001.070.000.860.01
12.002.580.002.350.15
14.004.310.004.080.01
16.004.680.004.450.01
18.004.920.004.680.00
20.005.100.004.860.00
22.005.250.005.010.00
24.005.380.005.140.00
26.005.380.005.140.00
28.005.380.005.140.00
30.005.380.005.140.00
32.005.380.005.140.00
34.005.380.005.140.00
36.005.380.005.140.00
38.005.380.005.140.00
40.005.380.005.140.00
42.005.380.005.140.00
44.005.380.005.140.00
46.005.380.005.140.00
48.005.380.005.140.00
50.005.380.005.140.00
52.005.380.005.140.00
54.005.380.005.140.00
56.005.380.005.140.00
58.005.380.005.140.00
60.005.380.005.140.00
62.005.380.005.140.00
64.005.380.005.140.00
66.005.380.005.140.00
68.005.380.005.140.00
70.005.380.005.140.00
72.005.380.005.140.00
Page 1251 Download HTML
Analysis - Failure NOAA 24-hr D 10 YR-C Rainfall=5.38" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 107
Summary for Subcatchment 6S: DA-P3 IMPERVIOUS
Runoff = 0.93 cfs @ 12.12 hrs, Volume= Routed to Pond 4P : PERVIOUS PAVEMENT 3B 3,734 cf, Depth= 5.14"
3 7' 4= 5.14"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-C Rainfall=5.38"
Area (ac) CN Description
0.200 98 Paved parking, HSG A
0.200 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
3.6 37 0.0300 0.17 Sheet Flow, Grass: Short n= 0.150 P2= 3.42" Shallow Concentrated Flow, Paved Kv= 20.3 fps
0.7 118 0.0200 2.87
4.3 155 Total
Subcatchment 6S: DA-P3 IMPERVIOUS
Subcatchment 6S: DA-P3 IMPERVIOUS
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Analysis - Failure NOAA 24-hr D 10 YR-C Rainfall=5.38" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 108
Hydrograph for Subcatchment 6S: DA-P3 IMPERVIOUS
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.130.000.030.01
4.000.280.000.130.01
6.000.460.000.280.02
8.000.700.000.500.03
10.001.070.000.860.05
12.002.580.002.350.53
14.004.310.004.080.05
16.004.680.004.450.03
18.004.920.004.680.02
20.005.100.004.860.02
22.005.250.005.010.01
24.005.380.005.140.01
26.005.380.005.140.00
28.005.380.005.140.00
30.005.380.005.140.00
32.005.380.005.140.00
34.005.380.005.140.00
36.005.380.005.140.00
38.005.380.005.140.00
40.005.380.005.140.00
42.005.380.005.140.00
44.005.380.005.140.00
46.005.380.005.140.00
48.005.380.005.140.00
50.005.380.005.140.00
52.005.380.005.140.00
54.005.380.005.140.00
56.005.380.005.140.00
58.005.380.005.140.00
60.005.380.005.140.00
62.005.380.005.140.00
64.005.380.005.140.00
66.005.380.005.140.00
68.005.380.005.140.00
70.005.380.005.140.00
72.005.380.005.140.00
Page 1253 Download HTML
Analysis - Failure NOAA 24-hr D 10 YR-C Rainfall=5.38" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 109
Summary for Subcatchment 7S: DA-P2 IMPERVIOUS
Runoff = 0.89 cfs @ 12.12 hrs, Volume= Routed to Pond 3P : PERVIOUS PAVEMENT 2B 3,547 cf, Depth= 5.14"
3,547 cf. Depth= 5.14"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-C Rainfall=5.38"
Area (ac) CN Description
0.190 98 Paved roads w/curbs & sewers, HSG A
0.190 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
3.5 35 0.0300 0.17 Sheet Flow, Grass: Short n= 0.150 P2= 3.42" Shallow Concentrated Flow, Paved Kv= 20.3 fps
0.8 137 0.0200 2.87
4.3 172 Total
Subcatchment 7S: DA-P2 IMPERVIOUS
Subcatchment 7S: DA-P2 IMPERVIOUS
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Analysis - Failure NOAA 24-hr D 10 YR-C Rainfall=5.38" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 110
Hydrograph for Subcatchment 7S: DA-P2 IMPERVIOUS
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.130.000.030.01
4.000.280.000.130.01
6.000.460.000.280.02
8.000.700.000.500.03
10.001.070.000.860.05
12.002.580.002.350.51
14.004.310.004.080.05
16.004.680.004.450.03
18.004.920.004.680.02
20.005.100.004.860.02
22.005.250.005.010.01
24.005.380.005.140.01
26.005.380.005.140.00
28.005.380.005.140.00
30.005.380.005.140.00
32.005.380.005.140.00
34.005.380.005.140.00
36.005.380.005.140.00
38.005.380.005.140.00
40.005.380.005.140.00
42.005.380.005.140.00
44.005.380.005.140.00
46.005.380.005.140.00
48.005.380.005.140.00
50.005.380.005.140.00
52.005.380.005.140.00
54.005.380.005.140.00
56.005.380.005.140.00
58.005.380.005.140.00
60.005.380.005.140.00
62.005.380.005.140.00
64.005.380.005.140.00
66.005.380.005.140.00
68.005.380.005.140.00
70.005.380.005.140.00
72.005.380.005.140.00
Page 1255 Download HTML
Summary for Subcatchment 8S: DA-P1 IMPERVIOUS
Runoff = 2.11 cfs @ 12.11 hrs, Volume= Routed to Pond 5P : BIORETENTION BASIN 1A
7,467 cf, Depth= 5.14"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-C Rainfall=5.38"
Area (ac) CN Description
0.400 98 Paved roads w/curbs & sewers, HSG A
0.400 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
1.4 235 0.0200 2.87 Shallow Concentrated Flow, Paved Kv= 20.3 fps
1.1 137 2.00 Direct Entry, Pipe Flow
2.5 372 Total
Subcatchment 8S: DA-P1_IMPERVIOUS
Subcatchment 8S: DA-P1 IMPERVIOUS
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours)
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Analysis - Failure NOAA 24-hr D 10 YR-C Rainfall=5.38" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 112
Hydrograph for Subcatchment 8S: DA-P1 IMPERVIOUS
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.130.000.030.01
4.000.280.000.130.03
6.000.460.000.280.03
8.000.700.000.500.05
10.001.070.000.860.10
12.002.580.002.351.25
14.004.310.004.080.11
16.004.680.004.450.06
18.004.920.004.680.04
20.005.100.004.860.03
22.005.250.005.010.03
24.005.380.005.140.02
26.005.380.005.140.00
28.005.380.005.140.00
30.005.380.005.140.00
32.005.380.005.140.00
34.005.380.005.140.00
36.005.380.005.140.00
38.005.380.005.140.00
40.005.380.005.140.00
42.005.380.005.140.00
44.005.380.005.140.00
46.005.380.005.140.00
48.005.380.005.140.00
50.005.380.005.140.00
52.005.380.005.140.00
54.005.380.005.140.00
56.005.380.005.140.00
58.005.380.005.140.00
60.005.380.005.140.00
62.005.380.005.140.00
64.005.380.005.140.00
66.005.380.005.140.00
68.005.380.005.140.00
70.005.380.005.140.00
72.005.380.005.140.00
Page 1257 Download HTML
Analysis - Failure NOAA 24-hr D 10 YR-C Rainfall=5.38" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 113
Summary for Subcatchment 14S: LOT 11 Roof
Runoff = 0.39 cfs @ 12.09 hrs, Volume= Routed to Pond 2P : Subusrface Infiltration Basin 1 1,286 cf, Depth= 5.14"
1,286 cf, Depth= 5.14"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-C Rainfall=5.38"
Area (sf) CN Description
3,000 98 Roofs, HSG A
3,000 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
Direct Entry, Pipe Flow
0.3 40 2.00
Subcatchment 14S: LOT 11 Roof
Page 1258 Download HTML
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 12/19/2025
Analysis - Failure NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LL
Hydrograph for Subcatchment 14S: LOT 11 Roof
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.130.000.030.00
4.000.280.000.130.00
6.000.460.000.280.01
8.000.700.000.500.01
10.001.070.000.860.02
12.002.580.002.350.24
14.004.310.004.080.02
16.004.680.004.450.01
18.004.920.004.680.01
20.005.100.004.860.01
22.005.250.005.010.00
24.005.380.005.140.00
26.005.380.005.140.00
28.005.380.005.140.00
30.005.380.005.140.00
32.005.380.005.140.00
34.005.380.005.140.00
36.005.380.005.140.00
38.005.380.005.140.00
40.005.380.005.140.00
42.005.380.005.140.00
44.005.380.005.140.00
46.005.380.005.140.00
48.005.380.005.140.00
50.005.380.005.140.00
52.005.380.005.140.00
54.005.380.005.140.00
56.005.380.005.140.00
58.005.380.005.140.00
60.005.380.005.140.00
62.005.380.005.140.00
64.005.380.005.140.00
66.005.380.005.140.00
68.005.380.005.140.00
70.005.380.005.140.00
72.005.380.005.140.00
Page 114
Page 1259 Download HTML
Analysis - Failure NOAA 24-hr D 10 YR-C Rainfall=5.38" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 115
Summary for Subcatchment 16S: Typ. Roof
Runoff = 0.24 cfs @ 12.09 hrs, Volume= Routed to Pond 5P : BIORETENTION BASIN 1A
793 cf, Depth= 5.14"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-C Rainfall=5.38"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
2.00 Direct Entry, Pipe Flow
Subcatchment 16S: Typ. Roof
Page 1260 Download HTML
Hydrograph for Subcatchment 16S: Typ. Roof
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.130.000.030.00
4.000.280.000.130.00
6.000.460.000.280.00
8.000.700.000.500.01
10.001.070.000.860.01
12.002.580.002.350.15
14.004.310.004.080.01
16.004.680.004.450.01
18.004.920.004.680.00
20.005.100.004.860.00
22.005.250.005.010.00
24.005.380.005.140.00
26.005.380.005.140.00
28.005.380.005.140.00
30.005.380.005.140.00
32.005.380.005.140.00
34.005.380.005.140.00
36.005.380.005.140.00
38.005.380.005.140.00
40.005.380.005.140.00
42.005.380.005.140.00
44.005.380.005.140.00
46.005.380.005.140.00
48.005.380.005.140.00
50.005.380.005.140.00
52.005.380.005.140.00
54.005.380.005.140.00
56.005.380.005.140.00
58.005.380.005.140.00
60.005.380.005.140.00
62.005.380.005.140.00
64.005.380.005.140.00
66.005.380.005.140.00
68.005.380.005.140.00
70.005.380.005.140.00
72.005.380.005.140.00
Page 1261 Download HTML
Analysis - Failure NOAA 24-hr D 10 YR-C Rainfall=5.38" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 117
Summary for Subcatchment 17S: Typ. Roof
Runoff = 0.24 cfs @ 12.09 hrs, Volume= Routed to Pond 5P : BIORETENTION BASIN 1A 793 cf, Depth= 5.14"
793 cf, Depth= 5.14"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-C Rainfall=5.38"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
2.00 Direct Entry, Pipe Flow
Subcatchment 17S: Typ. Roof
Page 1262 Download HTML
Hydrograph for Subcatchment 17S: Typ. Roof
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.130.000.030.00
4.000.280.000.130.00
6.000.460.000.280.00
8.000.700.000.500.01
10.001.070.000.860.01
12.002.580.002.350.15
14.004.310.004.080.01
16.004.680.004.450.01
18.004.920.004.680.00
20.005.100.004.860.00
22.005.250.005.010.00
24.005.380.005.140.00
26.005.380.005.140.00
28.005.380.005.140.00
30.005.380.005.140.00
32.005.380.005.140.00
34.005.380.005.140.00
36.005.380.005.140.00
38.005.380.005.140.00
40.005.380.005.140.00
42.005.380.005.140.00
44.005.380.005.140.00
46.005.380.005.140.00
48.005.380.005.140.00
50.005.380.005.140.00
52.005.380.005.140.00
54.005.380.005.140.00
56.005.380.005.140.00
58.005.380.005.140.00
60.005.380.005.140.00
62.005.380.005.140.00
64.005.380.005.140.00
66.005.380.005.140.00
68.005.380.005.140.00
70.005.380.005.140.00
72.005.380.005.140.00
Page 1263 Download HTML
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 12/19/2025
Analysis - Failure NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 119
Summary for Subcatchment 18S: Typ. Roof
Runoff = 0.24 cfs @ 12.09 hrs, Volume= Routed to Pond 5P : BIORETENTION BASIN 1A 793 cf, Depth= 5.14"
793 cf, Depth= 5.14"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-C Rainfall=5.38"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
2.00 Direct Entry, Pipe Flow
Subcatchment 18S: Typ. Roof
Page 1264 Download HTML
Hydrograph for Subcatchment 18S: Typ. Roof
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.130.000.030.00
4.000.280.000.130.00
6.000.460.000.280.00
8.000.700.000.500.01
10.001.070.000.860.01
12.002.580.002.350.15
14.004.310.004.080.01
16.004.680.004.450.01
18.004.920.004.680.00
20.005.100.004.860.00
22.005.250.005.010.00
24.005.380.005.140.00
26.005.380.005.140.00
28.005.380.005.140.00
30.005.380.005.140.00
32.005.380.005.140.00
34.005.380.005.140.00
36.005.380.005.140.00
38.005.380.005.140.00
40.005.380.005.140.00
42.005.380.005.140.00
44.005.380.005.140.00
46.005.380.005.140.00
48.005.380.005.140.00
50.005.380.005.140.00
52.005.380.005.140.00
54.005.380.005.140.00
56.005.380.005.140.00
58.005.380.005.140.00
60.005.380.005.140.00
62.005.380.005.140.00
64.005.380.005.140.00
66.005.380.005.140.00
68.005.380.005.140.00
70.005.380.005.140.00
72.005.380.005.140.00
Page 1265 Download HTML
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 12/19/2025
Analysis - Failure NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 121
Summary for Subcatchment 35S: Typ. Roof
Runoff = 0.24 cfs @ 12.09 hrs, Volume= 793 cf, Depth= 5.14" Routed to Pond 7P : BIORENTION BASIN 2A
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-C Rainfall=5.38"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
2.00 Direct Entry, Pipe Flow
Subcatchment 35S: Typ. Roof
Page 1266 Download HTML
Hydrograph for Subcatchment 35S: Typ. Roof
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.130.000.030.00
4.000.280.000.130.00
6.000.460.000.280.00
8.000.700.000.500.01
10.001.070.000.860.01
12.002.580.002.350.15
14.004.310.004.080.01
16.004.680.004.450.01
18.004.920.004.680.00
20.005.100.004.860.00
22.005.250.005.010.00
24.005.380.005.140.00
26.005.380.005.140.00
28.005.380.005.140.00
30.005.380.005.140.00
32.005.380.005.140.00
34.005.380.005.140.00
36.005.380.005.140.00
38.005.380.005.140.00
40.005.380.005.140.00
42.005.380.005.140.00
44.005.380.005.140.00
46.005.380.005.140.00
48.005.380.005.140.00
50.005.380.005.140.00
52.005.380.005.140.00
54.005.380.005.140.00
56.005.380.005.140.00
58.005.380.005.140.00
60.005.380.005.140.00
62.005.380.005.140.00
64.005.380.005.140.00
66.005.380.005.140.00
68.005.380.005.140.00
70.005.380.005.140.00
72.005.380.005.140.00
Page 1267 Download HTML
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 12/19/2025
YR-C Rainfall=5.38" Printed 12/19/2025 Page 123
Analysis - Failure NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 36S: Typ. Roof
Runoff = 0.24 cfs @ 12.09 hrs, Volume= 793 cf, Depth= 5.14" Routed to Pond 7P : BIORENTION BASIN 2A
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-C Rainfall=5.38"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
2.00 Direct Entry, Pipe Flow
Subcatchment 36S: Typ. Roof
Page 1268 Download HTML
Hydrograph for Subcatchment 36S: Typ. Roof
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.130.000.030.00
4.000.280.000.130.00
6.000.460.000.280.00
8.000.700.000.500.01
10.001.070.000.860.01
12.002.580.002.350.15
14.004.310.004.080.01
16.004.680.004.450.01
18.004.920.004.680.00
20.005.100.004.860.00
22.005.250.005.010.00
24.005.380.005.140.00
26.005.380.005.140.00
28.005.380.005.140.00
30.005.380.005.140.00
32.005.380.005.140.00
34.005.380.005.140.00
36.005.380.005.140.00
38.005.380.005.140.00
40.005.380.005.140.00
42.005.380.005.140.00
44.005.380.005.140.00
46.005.380.005.140.00
48.005.380.005.140.00
50.005.380.005.140.00
52.005.380.005.140.00
54.005.380.005.140.00
56.005.380.005.140.00
58.005.380.005.140.00
60.005.380.005.140.00
62.005.380.005.140.00
64.005.380.005.140.00
66.005.380.005.140.00
68.005.380.005.140.00
70.005.380.005.140.00
72.005.380.005.140.00
Page 1269 Download HTML
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 12/19/2025 ons LLC Page 125
Analysis - Failure NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 37S: Typ. Roof
Runoff = 0.24 cfs @ 12.09 hrs, Volume= 793 cf, Depth= 5.14" Routed to Pond 42P : BIORENTION BASIN 3A
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-C Rainfall=5.38"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
2.00 Direct Entry, Pipe Flow
Subcatchment 37S: Typ. Roof
Page 1270 Download HTML
Hydrograph for Subcatchment 37S: Typ. Roof
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.130.000.030.00
4.000.280.000.130.00
6.000.460.000.280.00
8.000.700.000.500.01
10.001.070.000.860.01
12.002.580.002.350.15
14.004.310.004.080.01
16.004.680.004.450.01
18.004.920.004.680.00
20.005.100.004.860.00
22.005.250.005.010.00
24.005.380.005.140.00
26.005.380.005.140.00
28.005.380.005.140.00
30.005.380.005.140.00
32.005.380.005.140.00
34.005.380.005.140.00
36.005.380.005.140.00
38.005.380.005.140.00
40.005.380.005.140.00
42.005.380.005.140.00
44.005.380.005.140.00
46.005.380.005.140.00
48.005.380.005.140.00
50.005.380.005.140.00
52.005.380.005.140.00
54.005.380.005.140.00
56.005.380.005.140.00
58.005.380.005.140.00
60.005.380.005.140.00
62.005.380.005.140.00
64.005.380.005.140.00
66.005.380.005.140.00
68.005.380.005.140.00
70.005.380.005.140.00
72.005.380.005.140.00
Page 1271 Download HTML
Summary for Subcatchment 38S: Typ. Roof
Runoff = 0.24 cfs @ 12.09 hrs, Volume= 793 cf, Depth= 5.14" Routed to Pond 42P : BIORENTION BASIN 3A
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-C Rainfall=5.38"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
2.00 Direct Entry, Pipe Flow
Subcatchment 38S: Typ. Roof
Page 1272 Download HTML
Hydrograph for Subcatchment 38S: Typ. Roof
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.130.000.030.00
4.000.280.000.130.00
6.000.460.000.280.00
8.000.700.000.500.01
10.001.070.000.860.01
12.002.580.002.350.15
14.004.310.004.080.01
16.004.680.004.450.01
18.004.920.004.680.00
20.005.100.004.860.00
22.005.250.005.010.00
24.005.380.005.140.00
26.005.380.005.140.00
28.005.380.005.140.00
30.005.380.005.140.00
32.005.380.005.140.00
34.005.380.005.140.00
36.005.380.005.140.00
38.005.380.005.140.00
40.005.380.005.140.00
42.005.380.005.140.00
44.005.380.005.140.00
46.005.380.005.140.00
48.005.380.005.140.00
50.005.380.005.140.00
52.005.380.005.140.00
54.005.380.005.140.00
56.005.380.005.140.00
58.005.380.005.140.00
60.005.380.005.140.00
62.005.380.005.140.00
64.005.380.005.140.00
66.005.380.005.140.00
68.005.380.005.140.00
70.005.380.005.140.00
72.005.380.005.140.00
Page 1273 Download HTML
Summary for Subcatchment 39S: Typ. Roof
Runoff = 0.24 cfs @ 12.09 hrs, Volume= 793 cf, Depth= 5.14" Routed to Pond 42P : BIORENTION BASIN 3A
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10 YR-C Rainfall=5.38"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)
0.4 45 2.00 Direct Entry, Pipe Flow
Subcatchment 39S: Typ. Roof
Page 1274 Download HTML
Hydrograph for Subcatchment 39S: Typ. Roof
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.130.000.030.00
4.000.280.000.130.00
6.000.460.000.280.00
8.000.700.000.500.01
10.001.070.000.860.01
12.002.580.002.350.15
14.004.310.004.080.01
16.004.680.004.450.01
18.004.920.004.680.00
20.005.100.004.860.00
22.005.250.005.010.00
24.005.380.005.140.00
26.005.380.005.140.00
28.005.380.005.140.00
30.005.380.005.140.00
32.005.380.005.140.00
34.005.380.005.140.00
36.005.380.005.140.00
38.005.380.005.140.00
40.005.380.005.140.00
42.005.380.005.140.00
44.005.380.005.140.00
46.005.380.005.140.00
48.005.380.005.140.00
50.005.380.005.140.00
52.005.380.005.140.00
54.005.380.005.140.00
56.005.380.005.140.00
58.005.380.005.140.00
60.005.380.005.140.00
62.005.380.005.140.00
64.005.380.005.140.00
66.005.380.005.140.00
68.005.380.005.140.00
70.005.380.005.140.00
72.005.380.005.140.00
Page 1275 Download HTML
Analysis - Failure NOAA 24-hr D 10 YR-C Rainfall=5.38" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 131
Summary for Pond 2P: Subusrface Infiltration Basin 1
Inflow Area = 80,967 sf, 34.36% Impervious, Inflow Depth = 1.95" for 10 YR-C event Inflow = 0.62 cfs @ 12.09 hrs, Volume= 13,179 cf Outflow = 0.62 cfs @ 12.10 hrs, Volume= 13,179 cf, Atten= 1%, Lag= 0.6 min Primary = 0.62 cfs @ 12.10 hrs, Volume= 13,179 cf Routed to Link 32L : POA1 Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs / 3 Automatic Starting Elev= 91.55' Surf.Area= 0.057 ac Storage= 0.140 af Peak Elev= 91.60' @ 12.10 hrs Surf.Area= 0.057 ac Storage= 0.141 af (0.001 af above start) Plug-Flow detention time= 451.2 min calculated for 7,077 cf (54% of inflow) Center-of-Mass det. time= 2.1 min ( 937.1 - 934.9 )
VolumeInvertAvail.StorageStorage Description
#1A87.00'0.100 af27.50'W x 90.00'L x 6.00'H Field A
0.341 af Overall - 0.091 af Embedded = 0.250 af x 40.0% Voids
#2A87.50'0.073 afADS N-12 36" x 20 Inside #1 Inside = 36.1"W x 36.1"H => 7.10 sf x 20.00'L = 142.0 cf Outside = 42.0"W x 42.0"H => 8.86 sf x 20.00'L = 177.2 cf 20 Chambers in 5 Rows 24.50' Header x 7.10 sf x 2 = 347.9 cf Inside
0.173 af Total Available Storage
Storage Group A created with Chamber Wizard
Device Routing Invert Outlet Devices #1 Primary 91.55' 48.0" x 48.0" Horiz. Grate C=0.600 #2 Device 1 88.00' 12.0" Round Culvert L= 119.0' RCP, square edge headwall, Ke=0.500 Inlet / Outlet Invert= 88.00' / 86.00' S= 0.0168 /' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 0.79 sf Primary OutFlow Max=0.62 cfs @ 12.10 hrs HW=91.60' TW=0.00' (Dynamic Tailwater) 1=Grate (Weir Controls 0.62 cfs @ 0.74 fps) 2=Culvert (Passes 0.62 cfs of 0.66 cfs potential flow)
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Analysis - Failure NOAA 24-hr D 10 YR-C Rainfall=5.38" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 132
Pond 2P: Subusrface Infiltration Basin 1 - Chamber Wizard Field A
Chamber Model = ADS N-12 36" (ADS N-12ยฎ Pipe) Inside= 36.1"W x 36.1"H => 7.10 sf x 20.00'L = 142.0 cf Outside= 42.0"W x 42.0"H => 8.86 sf x 20.00'L = 177.2 cf 42.0" Wide + 21.0" Spacing = 63.0" C-C Row Spacing 4 Chambers/Row x 20.00' Long +3.50' Header x 2 = 87.00' Row Length +18.0" End Stone x 2 = 90.00' Base Length 5 Rows x 42.0" Wide + 21.0" Spacing x 4 + 18.0" Side Stone x 2 = 27.50' Base Width 6.0" Stone Base + 42.0" Chamber Height + 24.0" Stone Cover = 6.00' Field Height 20 Chambers x 142.0 cf + 24.50' Header x 7.10 sf x 2 = 3,187.9 cf Chamber Storage 20 Chambers x 177.2 cf + 24.50' Header x 8.86 sf x 2 = 3,978.6 cf Displacement 14,850.0 cf Field - 3,978.6 cf Chambers = 10,871.4 cf Stone x 40.0% Voids = 4,348.5 cf Stone Storage Chamber Storage + Stone Storage = 7,536.4 cf = 0.173 af Overall Storage Efficiency = 50.8% Overall System Size = 90.00' x 27.50' x 6.00' 20 Chambers 550.0 cy Field 402.6 cy Stone
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Analysis - Failure Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 2P: Subusrface Infiltration Basin 1
Pond 2P: Subusrface Infiltration Basin 1
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Analysis - Failure NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 2P: Subusrface Infiltration Basin 1
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Analysis - Failure NOAA 24-hr D 10 YR-C Rainfall=5.38" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 135
Hydrograph for Pond 2P: Subusrface Infiltration Basin 1
Time (hours)Inflow (cfs)Storage (acre-feet)Elevation (feet)Primary (cfs)
0.000.000.14091.550.00
2.000.020.14091.550.02
4.000.040.14091.560.03
6.000.050.14091.560.05
8.000.070.14091.560.07
10.000.100.14091.570.10
12.000.450.14191.590.43
14.000.300.14191.580.30
16.000.260.14191.580.26
18.000.220.14191.580.22
20.000.180.14191.570.18
22.000.140.14191.570.14
24.000.110.14091.570.11
26.000.040.14091.560.04
28.000.000.14091.550.00
30.000.000.14091.550.00
32.000.000.14091.550.00
34.000.000.14091.550.00
36.000.000.14091.550.00
38.000.000.14091.550.00
40.000.000.14091.550.00
42.000.000.14091.550.00
44.000.000.14091.550.00
46.000.000.14091.550.00
48.000.000.14091.550.00
50.000.000.14091.550.00
52.000.000.14091.550.00
54.000.000.14091.550.00
56.000.000.14091.550.00
58.000.000.14091.550.00
60.000.000.14091.550.00
62.000.000.14091.550.00
64.000.000.14091.550.00
66.000.000.14091.550.00
68.000.000.14091.550.00
70.000.000.14091.550.00
72.000.000.14091.550.00
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NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 12/19/2025
Analysis - Failure NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
R-C Rainfall=5.38" Printed 12/19/2025 Page 136
Stage-Discharge for Pond 2P: Subsurface Infiltration Basin 1
Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)
87.000.0089.600.00
87.050.0089.650.00
87.100.0089.700.00
87.150.0089.750.00
87.200.0089.800.00
87.250.0089.850.00
87.300.0089.900.00
87.350.0089.950.00
87.400.0090.000.00
87.450.0090.050.00
87.500.0090.100.00
87.550.0090.150.00
87.600.0090.200.00
87.650.0090.250.00
87.700.0090.300.00
87.750.0090.350.00
87.800.0090.400.00
87.850.0090.450.00
87.900.0090.500.00
87.950.0090.550.00
88.000.0090.600.00
88.050.0090.650.00
88.100.0090.700.00
88.150.0090.750.00
88.200.0090.800.00
88.250.0090.850.00
88.300.0090.900.00
88.350.0090.950.00
88.400.0091.000.00
88.450.0091.050.00
88.500.0091.100.00
88.550.0091.150.00
88.600.0091.200.00
88.650.0091.250.00
88.700.0091.300.00
88.750.0091.350.00
88.800.0091.400.00
88.850.0091.450.00
88.900.0091.500.00
88.950.0091.550.00
89.000.0091.600.58
89.050.0091.650.92
89.100.0091.701.13
89.150.0091.751.30
89.200.0091.801.46
89.250.0091.851.60
89.300.0091.901.72
89.350.0091.951.84
89.400.0092.001.95
89.450.0092.052.06
89.500.0092.102.16
89.550.0092.152.26
Elevation (feet)Primary (cfs)
92.202.35
92.252.44
92.302.52
92.352.60
92.402.69
92.452.76
92.502.84
92.552.91
92.602.98
92.653.05
92.703.12
92.753.19
92.803.26
92.853.32
92.903.38
92.953.45
93.003.51
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Analysis - Failure NOAA 24-hr D 10 YR-C Rainfall=5.38" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 137
Stage-Area-Storage for Pond 2P: Subsurface Infiltration Basin 1
Elevation (feet)Storage (acre-feet)Elevation (feet)Storage (acre-feet)
87.000.00089.600.084
87.050.00189.650.086
87.100.00289.700.088
87.150.00389.750.089
87.200.00589.800.091
87.250.00689.850.093
87.300.00789.900.095
87.350.00889.950.097
87.400.00990.000.099
87.450.01090.050.101
87.500.01190.100.103
87.550.01290.150.105
87.600.01390.200.106
87.650.01490.250.108
87.700.01590.300.110
87.750.01690.350.112
87.800.01790.400.113
87.850.01890.450.115
87.900.02090.500.116
87.950.02190.550.118
88.000.02290.600.119
88.050.02490.650.121
88.100.02690.700.122
88.150.02790.750.123
88.200.02990.800.124
88.250.03190.850.125
88.300.03390.900.126
88.350.03490.950.127
88.400.03691.000.128
88.450.03891.050.129
88.500.04091.100.130
88.550.04291.150.131
88.600.04491.200.132
88.650.04691.250.133
88.700.04791.300.134
88.750.04991.350.136
88.800.05191.400.137
88.850.05391.450.138
88.900.05591.500.139
88.950.05791.550.140
89.000.05991.600.141
89.050.06191.650.142
89.100.06391.700.143
89.150.06591.750.145
89.200.06791.800.146
89.250.06991.850.147
89.300.07191.900.148
89.350.07491.950.149
89.400.07692.000.150
89.450.07892.050.151
89.500.08092.100.153
89.550.08292.150.154
Elevation (feet)Storage (acre-feet)
92.200.155
92.250.156
92.300.157
92.350.158
92.400.159
92.450.161
92.500.162
92.550.163
92.600.164
92.650.165
92.700.166
92.750.167
92.800.168
92.850.170
92.900.171
92.950.172
93.000.173
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Analysis - Failure NOAA 24-hr D 10 YR-C Rainfall=5.38" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 138
Summary for Pond 3P: PERVIOUS PAVEMENT 2B
Inflow Area = 8,276 sf,100.00% Impervious, Inflow Depth = 5.14" for 10 YR-C event
Inflow = 0.89 cfs @ 12.12 hrs, Volume= 3,547 cf
Outflow = 0.58 cfs @ 12.21 hrs, Volume= 3,543 cf, Atten= 35%, Lag= 5.4 min
Primary = 0.58 cfs @ 12.21 hrs, Volume= 3,543 cf
Routed to Pond 33P : INELL TRATION BASIN 2
Routed to Pond 33P : INFILTRATION BASIN 2
Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs / 3 Peak Elevation = 94.84' @ 12.22 hrs Surf. Area = 9,225 sf Storage = 975 cf Plug-Flow detention time = 134.8 min calculated for 3,542 cf (100% of inflow) Center-of-Mass det. time = 134.4 min (883.4 - 749.1)
VolumeInvertAvail.StorageStorage Description
#193.80'615 cfStone Storage Bed (Prismatic)Listed below (Recalc) 1,538 cf Overall ร— 40.0% Voids
#294.30'231 cfSurface and Base Course (Prismatic)Listed below (Recalc) 1,538 cf Overall ร— 15.0% Voids
#394.80'1,538 cfSurface (Prismatic)Listed below (Recalc)
2,383 cfTotal Available Storage
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
93.803,07500
94.303,0751,5381,538
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
94.303,07500
94.803,0751,5381,538
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
94.803,07500
95.303,0751,5381,538
DeviceRoutingInvertOutlet Devices
#1Device 393.80'2.5" Vert. Orifice C = 0.600
#2Device 394.80'48.0" x 48.0" Horiz. Grate C = 0.600
#3Primary92.08'12.0" Round Culvert L = 38.0' RCP, groove end projecting, Ke = 0.200Inlet / Outlet Invert= $ 92.08'/91.65' $ S = 0.0113'/' Cc = 0.900n=0.011, Flow Area=0.79 sf
Primary OutFlow Max=0.58 cfs @ 12.21 hrs HW=94.84' TW=94.23' (Dynamic Tailwater) 3=Culvert (Passes 0.58 cfs of 3.43 cfs potential flow) 1=Orifice (Orifice Controls 0.13 cfs @ 3.76 fps) 2=Grate (Weir Controls 0.45 cfs @ 0.67 fps)
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Analysis - Failure NOAA 24 Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 3P: PERVIOUS PAVEMENT 2B
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Analysis - Failure NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 140
Pond 3P: PERVIOUS PAVEMENT 2B
Pond 3P: PERVIOUS PAVEMENT 2B
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Analysis - Failure NOAA 24-hr D 10 YR-C Rainfall=5.38" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 141
Hydrograph for Pond 3P: PERVIOUS PAVEMENT 2B
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Primary (cfs)
0.000.00093.800.00
2.000.011593.810.00
4.000.016793.850.01
6.000.0210393.880.01
8.000.0313593.910.02
10.000.0518393.950.03
12.000.5162894.330.09
14.000.0581594.730.07
16.000.0367594.430.05
18.000.0252994.230.05
20.000.0233294.070.04
22.000.0118593.950.03
24.000.0111793.900.02
26.000.005993.850.00
28.000.003893.830.00
30.000.002893.820.00
32.000.002293.820.00
34.000.001893.810.00
36.000.001593.810.00
38.000.001393.810.00
40.000.001293.810.00
42.000.001193.810.00
44.000.001093.810.00
46.000.00993.810.00
48.000.00893.810.00
50.000.00893.810.00
52.000.00793.810.00
54.000.00793.810.00
56.000.00693.810.00
58.000.00693.800.00
60.000.00693.800.00
62.000.00593.800.00
64.000.00593.800.00
66.000.00593.800.00
68.000.00593.800.00
70.000.00493.800.00
72.000.00493.800.00
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Analysis - Failure NOAA 24-hr D 10 YR-C Rainfall=5.38" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 142
Stage-Discharge for Pond 3P: PERVIOUS PAVEMENT 2B
Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)
93.800.0094.320.1194.840.58
93.810.0094.330.1194.850.74
93.820.0094.340.1194.860.93
93.830.0094.350.1194.871.13
93.840.0094.360.1194.881.35
93.850.0094.370.1194.891.58
93.860.0194.380.1194.901.82
93.870.0194.390.1194.912.07
93.880.0194.400.1294.922.34
93.890.0194.410.1294.932.62
93.900.0294.420.1294.942.91
93.910.0294.430.1294.953.21
93.920.0294.440.1294.963.52
93.930.0394.450.1294.973.84
93.940.0394.460.1294.984.17
93.950.0394.470.1294.994.50
93.960.0494.480.1295.004.85
93.970.0494.490.1395.015.13
93.980.0594.500.1395.025.15
93.990.0594.510.1395.035.17
94.000.0594.520.1395.045.18
94.010.0594.530.1395.055.20
94.020.0694.540.1395.065.22
94.030.0694.550.1395.075.24
94.040.0694.560.1395.085.26
94.050.0694.570.1395.095.28
94.060.0694.580.1395.105.30
94.070.0794.590.1495.115.31
94.080.0794.600.1495.125.33
94.090.0794.610.1495.135.35
94.100.0794.620.1495.145.37
94.110.0794.630.1495.155.39
94.120.0894.640.1495.165.40
94.130.0894.650.1495.175.42
94.140.0894.660.1495.185.44
94.150.0894.670.1495.195.46
94.160.0894.680.1495.205.47
94.170.0894.690.1595.215.49
94.180.0994.700.1595.225.51
94.190.0994.710.1595.235.53
94.200.0994.720.1595.245.55
94.210.0994.730.1595.255.56
94.220.0994.740.1595.265.58
94.230.0994.750.1595.275.60
94.240.1094.760.1595.285.61
94.250.1094.770.1595.295.63
94.260.1094.780.1595.305.65
94.270.1094.790.15
94.280.1094.800.16
94.290.1094.810.21
94.300.1094.820.31
94.310.1094.830.43
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Analysis - Failure NOAA 24-hr D 10 YR-C Rainfall=5.38" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 143
Stage-Area-Storage for Pond 3P: PERVIOUS PAVEMENT 2B
Elevation (feet)Storage (cubic-feet)Elevation (feet)Storage (cubic-feet)Elevation (feet)Storage (cubic-feet)
93.80094.3262494.84969
93.811294.3362994.85999
93.822594.3463394.861,030
93.833794.3563894.871,061
93.844994.3664394.881,092
93.856194.3764794.891,122
93.867494.3865294.901,153
93.878694.3965794.911,184
93.889894.4066194.921,215
93.8911194.4166694.931,245
93.9012394.4267094.941,276
93.9113594.4367594.951,307
93.9214894.4468094.961,338
93.9316094.4568494.971,368
93.9417294.4668994.981,399
93.9518594.4769394.991,430
93.9619794.4869895.001,461
93.9720994.4970395.011,491
93.9822194.5070795.021,522
93.9923494.5171295.031,553
94.0024694.5271695.041,584
94.0125894.5372195.051,614
94.0227194.5472695.061,645
94.0328394.5573095.071,676
94.0429594.5673595.081,707
94.0530894.5774095.091,737
94.0632094.5874495.101,768
94.0733294.5974995.111,799
94.0834494.6075395.121,830
94.0935794.6175895.131,860
94.1036994.6276395.141,891
94.1138194.6376795.151,922
94.1239494.6477295.161,953
94.1340694.6577695.171,983
94.1441894.6678195.182,014
94.1543094.6778695.192,045
94.1644394.6879095.202,076
94.1745594.6979595.212,106
94.1846794.7080095.222,137
94.1948094.7180495.232,168
94.2049294.7280995.242,199
94.2150494.7381395.252,229
94.2251794.7481895.262,260
94.2352994.7582395.272,291
94.2454194.7682795.282,322
94.2555494.7783295.292,352
94.2656694.7883695.302,383
94.2757894.79841
94.2859094.80846
94.2960394.81876
94.3061594.82907
94.3162094.83938
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Analysis - Failure NOAA 24-hr D 10 YR-C Rainfall=5.38" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 144
Summary for Pond 4P: PERVIOUS PAVEMENT 3B
Inflow Area = 8,712 sf,100.00% Impervious, Inflow Depth = 5.14" for 10 YR-C event
Inflow = 0.93 cfs @ 12.12 hrs, Volume= 3,734 cf
Outflow = 0.67 cfs @ 12.19 hrs, Volume= 3,730 cf, Atten= 28%, Lag= 4.3 min
Primary = 0.67 cfs @ 12.19 hrs, Volume= 3,730 cf
Routed to Pond 8P : INEIL TRATION BASIN 3
Routed to Pond 8P : INFILTRATION BASIN 3
Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs / 3 Peak Elevation = 94.85' @ 12.19 hrs Surf. Area = 8,889 sf Storage = 951 cf Plug-Flow detention time = 94.8 min calculated for 3,729 cf (100% of inflow) Center-of-Mass det. time = 94.4 min (843.5 - 749.1)
VolumeInvertAvail.StorageStorage Description
#193.80'593 cfStone Storage Bed (Prismatic)Listed below (Recalc) 1,482 cf Overall ร— 40.0% Voids
#294.30'222 cfSurface and Base Course (Prismatic)Listed below (Recalc) 1,482 cf Overall ร— 15.0% Voids
#394.80'1,482 cfSurface (Prismatic)Listed below (Recalc)
2,296 cfTotal Available Storage
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
93.802,96300
94.302,9631,4821,482
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
94.302,96300
94.802,9631,4821,482
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
94.802,96300
95.302,9631,4821,482
DeviceRoutingInvertOutlet Devices
#1Device 393.80'2.5" Vert. Orifice C = 0.600
#2Device 394.80'48.0" x 48.0" Horiz. Grate C = 0.600
#3Primary92.00'12.0" Round Culvert L = 52.0' RCP, groove end projecting, Ke = 0.200Inlet / Outlet Invert= $ 92.00'/90.75' $ S = 0.0240'/ Cc = 0.900n=0.011, Flow Area=0.79 sf
Primary OutFlow Max=0.67 cfs @ 12.19 hrs HW=94.85' TW=93.58' (Dynamic Tailwater) 3=Culvert (Passes 0.67 cfs of 4.61 cfs potential flow) 1=Orifice (Orifice Controls 0.16 cfs @ 4.67 fps) 2=Grate (Weir Controls 0.51 cfs @ 0.70 fps)
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Pond 4P: PERVIOUS PAVEMENT 3B
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Analysis - Failure NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 4P: PERVIOUS PAVEMENT 3B
Pond 4P: PERVIOUS PAVEMENT 3B
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Analysis - Failure NOAA 24-hr D 10 YR-C Rainfall=5.38" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 147
Hydrograph for Pond 4P: PERVIOUS PAVEMENT 3B
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Primary (cfs)
0.000.00093.800.00
2.000.011693.810.00
4.000.016993.860.01
6.000.0210393.890.01
8.000.0313593.910.02
10.000.0518493.950.04
12.000.5363694.400.12
14.000.0568094.500.09
16.000.0342894.160.07
18.000.0218693.960.04
20.000.0212893.910.02
22.000.0111393.900.02
24.000.0110293.890.01
26.000.005393.840.00
28.000.003593.830.00
30.000.002693.820.00
32.000.002093.820.00
34.000.001793.810.00
36.000.001493.810.00
38.000.001293.810.00
40.000.001193.810.00
42.000.001093.810.00
44.000.00993.810.00
46.000.00893.810.00
48.000.00893.810.00
50.000.00793.810.00
52.000.00693.810.00
54.000.00693.810.00
56.000.00693.800.00
58.000.00593.800.00
60.000.00593.800.00
62.000.00593.800.00
64.000.00593.800.00
66.000.00493.800.00
68.000.00493.800.00
70.000.00493.800.00
72.000.00493.800.00
Page 1292 Download HTML
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 12/19/2025
0 YR-C Rainfall=5.38" Printed 12/19/2025 Page 148
Analysis - Failure NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 4P: PERVIOUS PAVEMENT 3B
Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)
93.800.0094.320.1194.840.58
93.810.0094.330.1194.850.74
93.820.0094.340.1194.860.93
93.830.0094.350.1194.871.13
93.840.0094.360.1194.881.35
93.850.0094.370.1194.891.58
93.860.0194.380.1194.901.82
93.870.0194.390.1194.912.07
93.880.0194.400.1294.922.34
93.890.0194.410.1294.932.62
93.900.0294.420.1294.942.91
93.910.0294.430.1294.953.21
93.920.0294.440.1294.963.52
93.930.0394.450.1294.973.84
93.940.0394.460.1294.984.17
93.950.0394.470.1294.994.50
93.960.0494.480.1295.004.85
93.970.0494.490.1395.015.21
93.980.0594.500.1395.025.57
93.990.0594.510.1395.035.95
94.000.0594.520.1395.046.20
94.010.0594.530.1395.056.21
94.020.0694.540.1395.066.22
94.030.0694.550.1395.076.24
94.040.0694.560.1395.086.25
94.050.0694.570.1395.096.26
94.060.0694.580.1395.106.28
94.070.0794.590.1495.116.29
94.080.0794.600.1495.126.30
94.090.0794.610.1495.136.32
94.100.0794.620.1495.146.33
94.110.0794.630.1495.156.34
94.120.0894.640.1495.166.36
94.130.0894.650.1495.176.37
94.140.0894.660.1495.186.38
94.150.0894.670.1495.196.40
94.160.0894.680.1495.206.41
94.170.0894.690.1595.216.42
94.180.0994.700.1595.226.44
94.190.0994.710.1595.236.45
94.200.0994.720.1595.246.46
94.210.0994.730.1595.256.47
94.220.0994.740.1595.266.49
94.230.0994.750.1595.276.50
94.240.1094.760.1595.286.51
94.250.1094.770.1595.296.53
94.260.1094.780.1595.306.54
94.270.1094.790.15
94.280.1094.800.16
94.290.1094.810.21
94.300.1094.820.31
94.310.1094.830.43
Page 1293 Download HTML
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 12/19/2025
Analysis - Failure NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
/R-C Rainfall=5.38" Printed 12/19/2025 Page 149
Stage-Area-Storage for Pond 4P: PERVIOUS PAVEMENT 3B
Elevation (feet)Storage (cubic-feet)Elevation (feet)Storage (cubic-feet)Elevation (feet)Storage (cubic-feet)
93.80094.3260194.84933
93.811294.3360694.85963
93.822494.3461094.86993
93.833694.3561594.871,022
93.844794.3661994.881,052
93.855994.3762494.891,081
93.867194.3862894.901,111
93.878394.3963394.911,141
93.889594.4063794.921,170
93.8910794.4164194.931,200
93.9011994.4264694.941,230
93.9113094.4365094.951,259
93.9214294.4465594.961,289
93.9315494.4565994.971,319
93.9416694.4666494.981,348
93.9517894.4766894.991,378
93.9619094.4867395.001,407
93.9720194.4967795.011,437
93.9821394.5068195.021,467
93.9922594.5168695.031,496
94.0023794.5269095.041,526
94.0124994.5369595.051,556
94.0226194.5469995.061,585
94.0327394.5570495.071,615
94.0428494.5670895.081,644
94.0529694.5771395.091,674
94.0630894.5871795.101,704
94.0732094.5972195.111,733
94.0833294.6072695.121,763
94.0934494.6173095.131,793
94.1035694.6273595.141,822
94.1136794.6373995.151,852
94.1237994.6474495.161,882
94.1339194.6574895.171,911
94.1440394.6675395.181,941
94.1541594.6775795.191,970
94.1642794.6876195.202,000
94.1743994.6976695.212,030
94.1845094.7077095.222,059
94.1946294.7177595.232,089
94.2047494.7277995.242,119
94.2148694.7378495.252,148
94.2249894.7478895.262,178
94.2351094.7579395.272,207
94.2452194.7679795.282,237
94.2553394.7780195.292,267
94.2654594.7880695.302,296
94.2755794.79810
94.2856994.80815
94.2958194.81844
94.3059394.82874
94.3159794.83904
Page 1294 Download HTML
Analysis - Failure NOAA 24-hr D 10 YR-C Rainfall=5.38" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 150
Summary for Pond 5P: BIORETENTION BASIN 1A
Inflow Area = 77,967 sf, 31.84% Impervious, Inflow Depth = 1.83" for 10 YR-C event
Inflow = 3.06 cfs @ 12.10 hrs, Volume= 11,893 cf
Outflow = 0.29 cfs @ 13.26 hrs, Volume= 11,894 cf, Atten= 91%, Lag= 69.6 min
Primary = 0.29 cfs @ 13.26 hrs, Volume= 11,894 cf
Routed to Pond 2P : Subsurface Infiltration Basin 1
Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs / 3
Automatic Starting Elev= 91.55' Surf.Area= 1,500 sf Storage= 2,325 cf
Peak Elev= 94.67' @ 13.25 hrs Surf.Area= 1,500 sf Storage= 7,004 cf (4,679 cf above start)
Plug-Flow detention time= 378.3 min calculated for 9,568 cf (80% of inflow)
Center-of-Mass det. time= 180.7 min (955.7 - 775.0 )
Volume Invert Avail.Storage Storage Description
#1 90.00' 8,250 cf Custom Stage Data (Prismatic) Listed below (Recalc)
Elevation (feet) Surf.Area (sq-ft) Inc.Store (cubic-feet) Cum.Store (cubic-feet)
90.00 1,500 0 0
95.50 1,500 8,250 8,250
Device Routing Invert Outlet Devices
#1 Device 3 91.00' 2.5" Vert. Orifice C= 0.600 Limited to weir flow at low heads
#2 Device 3 95.00' 48.0" x 48.0" Horiz. Grate C= 0.600
#3 Primary 87.48' 12.0" Round Culvert L= 28.0' RCP, groove end projecting, Ke= 0.200 Inlet / Outlet Invert= 87.48' / 87.00' S= 0.0171 ' / Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 0.79 sf
Primary OutFlow Max=0.29 cfs @ 13.26 hrs HW=94.67' TW=91.58' (Dynamic Tailwater)
3=Culvert (Passes 0.29 cfs of 7.93 cfs potential flow)
1=Orifice (Orifice Controls 0.29 cfs @ 8.46 fps)
2=Grate ( Controls 0.00 cfs)
Page 1295 Download HTML
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 12/19/2025
10 YR-C Rainfall=5.38" Printed 12/19/2025 Page 151
Analysis - Failure NOAA 24 Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 5P: BIORETENTION BASIN 1A
Pond 5P: BIORETENTION BASIN 1A
Page 1296 Download HTML
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 12/19/2025
10 YR-C Rainfall=5.38" Printed 12/19/2025 Page 152
Analysis - Failure NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 5P: BIORETENTION BASIN 1A
Stage-Area-Storage
Page 1297 Download HTML
Analysis - Failure NOAA 24-hr D 10 YR-C Rainfall=5.38" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 153
Hydrograph for Pond 5P: BIORETENTION BASIN 1A
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Primary (cfs)
0.000.002,32591.550.00
2.000.022,34491.560.01
4.000.042,38991.590.03
6.000.052,43691.620.04
8.000.082,53291.690.06
10.000.142,75191.830.09
12.001.834,67893.120.20
14.000.206,85294.570.28
16.000.115,95093.970.25
18.000.084,95993.310.22
20.000.074,08092.720.18
22.000.063,41992.280.14
24.000.052,95291.970.10
26.000.002,44391.630.04
28.000.002,32691.550.00
30.000.002,32591.550.00
32.000.002,32591.550.00
34.000.002,32591.550.00
36.000.002,32591.550.00
38.000.002,32591.550.00
40.000.002,32591.550.00
42.000.002,32591.550.00
44.000.002,32591.550.00
46.000.002,32591.550.00
48.000.002,32591.550.00
50.000.002,32591.550.00
52.000.002,32591.550.00
54.000.002,32591.550.00
56.000.002,32591.550.00
58.000.002,32591.550.00
60.000.002,32591.550.00
62.000.002,32591.550.00
64.000.002,32591.550.00
66.000.002,32591.550.00
68.000.002,32591.550.00
70.000.002,32591.550.00
72.000.002,32591.550.00
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NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 12/19/2025
YR-C Rainfall=5.38" Printed 12/19/2025 Page 154
Analysis - Failure NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 5P: BIORETENTION BASIN 1A
Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)
90.000.0092.600.17
90.050.0092.650.17
90.100.0092.700.18
90.150.0092.750.18
90.200.0092.800.18
90.250.0092.850.19
90.300.0092.900.19
90.350.0092.950.19
90.400.0093.000.20
90.450.0093.050.20
90.500.0093.100.20
90.550.0093.150.21
90.600.0093.200.21
90.650.0093.250.21
90.700.0093.300.22
90.750.0093.350.22
90.800.0093.400.22
90.850.0093.450.23
90.900.0093.500.23
90.950.0093.550.23
91.000.0093.600.24
91.050.0093.650.24
91.100.0093.700.24
91.150.0093.750.24
91.200.0093.800.25
91.250.0093.850.25
91.300.0093.900.25
91.350.0093.950.25
91.400.0094.000.26
91.450.0094.050.26
91.500.0094.100.26
91.550.0094.150.26
91.600.0494.200.27
91.650.0594.250.27
91.700.0694.300.27
91.750.0794.350.27
91.800.0894.400.28
91.850.0994.450.28
91.900.1094.500.28
91.950.1094.550.28
92.000.1194.600.29
92.050.1294.650.29
92.100.1294.700.29
92.150.1394.750.29
92.200.1394.800.30
92.250.1494.850.30
92.300.1494.900.30
92.350.1594.950.30
92.400.1595.000.30
92.450.1695.050.89
92.500.1695.101.96
92.550.1695.153.35
Elevation (feet)Primary (cfs)
95.204.99
95.256.86
95.308.74
95.358.80
95.408.86
95.458.92
95.508.97
Page 1299 Download HTML
Analysis - Failure NOAA 24-hr D 10 YR-C Rainfall=5.38" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 155
Stage-Area-Storage for Pond 5P: BIORETENTION BASIN 1A
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
90.001,5000
90.101,500150
90.201,500300
90.301,500450
90.401,500600
90.501,500750
90.601,500900
90.701,5001,050
90.801,5001,200
90.901,5001,350
91.001,5001,500
91.101,5001,650
91.201,5001,800
91.301,5001,950
91.401,5002,100
91.501,5002,250
91.601,5002,400
91.701,5002,550
91.801,5002,700
91.901,5002,850
92.001,5003,000
92.101,5003,150
92.201,5003,300
92.301,5003,450
92.401,5003,600
92.501,5003,750
92.601,5003,900
92.701,5004,050
92.801,5004,200
92.901,5004,350
93.001,5004,500
93.101,5004,650
93.201,5004,800
93.301,5004,950
93.401,5005,100
93.501,5005,250
93.601,5005,400
93.701,5005,550
93.801,5005,700
93.901,5005,850
94.001,5006,000
94.101,5006,150
94.201,5006,300
94.301,5006,450
94.401,5006,600
94.501,5006,750
94.601,5006,900
94.701,5007,050
94.801,5007,200
94.901,5007,350
95.001,5007,500
95.101,5007,650
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
95.201,5007,800
95.301,5007,950
95.401,5008,100
95.501,5008,250
Page 1300 Download HTML
Analysis - Failure NOAA 24-hr D 10 YR-C Rainfall=5.38" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 156
Summary for Pond 7P: BIORENTION BASIN 2A
Inflow Area = 22,431 sf, 16.50% Impervious, Inflow Depth = 1.08" for 10 YR-C event Inflow = 0.48 cfs @ 12.09 hrs, Volume= 2,028 cf Outflow = 0.48 cfs @ 12.09 hrs, Volume= 1,981 cf, Atten= 0%, Lag= 0.0 min Primary = 0.48 cfs @ 12.09 hrs, Volume= 1,981 cf Routed to Pond 33P : INFILTRATION BASIN 2 Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs / 3 Peak Elev= 95.54' @ 12.09 hrs Surf.Area= 240 sf Storage= 178 cf Plug-Flow detention time= 40.9 min calculated for 1,981 cf (98% of inflow) Center-of-Mass det. time= 26.5 min ( 829.5 - 803.1 )
VolumeInvertAvail.StorageStorage Description
#194.30'307 cfCustom Stage Data (Prismatic)Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
94.306300
95.001487474
96.00319234307
DeviceRoutingInvertOutlet Devices
#1Device 394.80'2.5" Vert. Orifice C= 0.600Limited to weir flow at low heads
#2Device 395.50'48.0" x 48.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads
#3Primary91.80'12.0" Round Culvert L= 30.0' RCP, groove end projecting, Ke= 0.200 Inlet / Outlet Invert= 91.80' / 91.65' S= 0.0050 ' /' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 0.79 sf
Primary OutFlow Max=0.48 cfs @ 12.09 hrs HW=95.54' TW=94.10' (Dynamic Tailwater) 3=Culvert (Passes 0.48 cfs of 5.33 cfs potential flow) 1=Orifice (Orifice Controls 0.13 cfs @ 3.83 fps) 2=Grate (Weir Controls 0.35 cfs @ 0.62 fps)
Image
Page 1301 Download HTML
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 12/19/2025
Analysis - Failure NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 157
Pond 7P: BIORENTION BASIN 2A
Pond 7P: BIORENTION BASIN 2A
Page 1302 Download HTML
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 12/19/2025
Analysis - Failure NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 158
Pond 7P: BIORENTION BASIN 2A
Page 1303 Download HTML
Analysis - Failure NOAA 24-hr D 10 YR-C Rainfall=5.38" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 159
Hydrograph for Pond 7P: BIORENTION BASIN 2A
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Primary (cfs)
0.000.00094.300.00
2.000.00894.420.00
4.000.014094.750.00
6.000.015594.860.01
8.000.015794.880.01
10.000.026194.910.02
12.000.2917495.520.29
14.000.046894.960.04
16.000.026294.920.02
18.000.026094.900.02
20.000.015894.890.01
22.000.015894.890.01
24.000.015794.880.01
26.000.004894.810.00
28.000.004794.800.00
30.000.004794.800.00
32.000.004794.800.00
34.000.004794.800.00
36.000.004794.800.00
38.000.004794.800.00
40.000.004794.800.00
42.000.004794.800.00
44.000.004794.800.00
46.000.004794.800.00
48.000.004794.800.00
50.000.004794.800.00
52.000.004794.800.00
54.000.004794.800.00
56.000.004794.800.00
58.000.004794.800.00
60.000.004794.800.00
62.000.004794.800.00
64.000.004794.800.00
66.000.004794.800.00
68.000.004794.800.00
70.000.004794.800.00
72.000.004794.800.00
Page 1304 Download HTML
Analysis - Failure NOAA 24-hr D 10 YR-C Rainfall=5.38" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 160
Stage-Discharge for Pond 7P: BIORENTION BASIN 2A
Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)
94.300.0094.820.0095.340.11
94.310.0094.830.0095.350.11
94.320.0094.840.0095.360.11
94.330.0094.850.0095.370.11
94.340.0094.860.0195.380.11
94.350.0094.870.0195.390.11
94.360.0094.880.0195.400.12
94.370.0094.890.0195.410.12
94.380.0094.900.0295.420.12
94.390.0094.910.0295.430.12
94.400.0094.920.0295.440.12
94.410.0094.930.0395.450.12
94.420.0094.940.0395.460.12
94.430.0094.950.0395.470.12
94.440.0094.960.0495.480.12
94.450.0094.970.0495.490.13
94.460.0094.980.0595.500.13
94.470.0094.990.0595.510.18
94.480.0095.000.0595.520.28
94.490.0095.010.0595.530.40
94.500.0095.020.0695.540.55
94.510.0095.030.0695.550.72
94.520.0095.040.0695.560.90
94.530.0095.050.0695.571.10
94.540.0095.060.0695.581.32
94.550.0095.070.0795.591.55
94.560.0095.080.0795.601.79
94.570.0095.090.0795.612.05
94.580.0095.100.0795.622.31
94.590.0095.110.0795.632.59
94.600.0095.120.0895.642.88
94.610.0095.130.0895.653.18
94.620.0095.140.0895.663.49
94.630.0095.150.0895.673.81
94.640.0095.160.0895.684.14
94.650.0095.170.0895.694.48
94.660.0095.180.0995.704.83
94.670.0095.190.0995.715.18
94.680.0095.200.0995.725.55
94.690.0095.210.0995.735.92
94.700.0095.220.0995.746.30
94.710.0095.230.0995.756.45
94.720.0095.240.1095.766.47
94.730.0095.250.1095.776.48
94.740.0095.260.1095.786.50
94.750.0095.270.1095.796.52
94.760.0095.280.1095.806.53
94.770.0095.290.1095.816.55
94.780.0095.300.1095.826.56
94.790.0095.310.1095.836.58
94.800.0095.320.1195.846.59
94.810.0095.330.1195.856.61
Elevation (feet)Primary (cfs)
95.866.62
95.876.64
95.886.65
95.896.67
95.906.68
95.916.70
95.926.71
95.936.73
95.946.74
95.956.75
95.966.77
95.976.78
95.986.80
95.996.81
96.006.83
Page 1305 Download HTML
IOAA 24-hr D 10 YR-C Rainfall=5.38' Printed 12/19/2025 s LLC Page 161
Analysis - Failure NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Area-Storage for Pond 7P: BIORENTION BASIN 2A
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
94.3063095.34206134
94.3265195.36210138
94.3468395.38213142
94.3670495.40216147
94.3873595.42220151
94.4075795.44223156
94.4278895.46227160
94.44801095.48230165
94.46821295.50234169
94.48851395.52237174
94.50871595.54240179
94.52901795.56244184
94.54921995.58247188
94.56952095.60251193
94.58972295.62254198
94.60992495.64257204
94.621022695.66261209
94.641042895.68264214
94.661073195.70268219
94.681093395.72271225
94.701123595.74275230
94.721143795.76278236
94.741163995.78281241
94.761194295.80285247
94.781214495.82288253
94.801244795.84292258
94.821264995.86295264
94.841295295.88298270
94.861315495.90302276
94.881335795.92305282
94.901366095.94309289
94.921386295.96312295
94.941416595.98316301
94.961436896.00319307
94.9814671
95.0014874
95.0215177
95.0415580
95.0615883
95.0816286
95.1016590
95.1216993
95.1417296
95.16175100
95.18179103
95.20182107
95.22186111
95.24189114
95.26192118
95.28196122
95.30199126
95.32203130
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Analysis - Failure NOAA 24-hr D 10 YR-C Rainfall=5.38" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 162
Summary for Pond 8P: INFILTRATION BASIN 3
Inflow Area = 43,883 sf, 32.50% Impervious, Inflow Depth = 1.83" for 10 YR-C event
Inflow = 0.93 cfs @ 12.19 hrs, Volume= 6,708 cf
Outflow = 0.19 cfs @ 13.60 hrs, Volume= 6,702 cf, Atten= 79%, Lag= 84.8 min
Primary = 0.19 cfs @ 13.60 hrs, Volume= 6,702 cf
Routed to Link 34L : POA 3
Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs / 3
Automatic Starting Elev= 92.75' Surf.Area= 1,150 sf Storage= 2,300 cf
Peak Elev= 94.21' @ 13.60 hrs Surf.Area= 1,150 sf Storage= 3,979 cf (1,679 cf above start)
Plug-Flow detention time= 398.3 min calculated for 4,402 cf (66% of inflow)
Center-of-Mass det. time= 118.3 min ( 972.4 - 854.1 )
Volume Invert Avail.Storage Storage Description
#1 90.75' 4,888 cf Custom Stage Data (Prismatic)Listed below (Recalc)
Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet)
90.75 1,150 0 0
95.00 1,150 4,888 4,888
Device Routing Invert Outlet Devices
#1 Device 3 92.75' 2.5" Vert. Orifice C= 0.600 Limited to weir flow at low heads
#2 Device 3 94.50' 48.0" x 48.0" Horiz. Grate C= 0.600
#3 Primary 92.75' 12.0" Round Culvert L= 7.0' RCP, groove end projecting, Ke= 0.200
Inlet / Outlet Invert= 92.75' / 92.65' S= 0.0143 ' / Cc= 0.900
Inlet / Outlet Invert= 92.75' / 92.65' S= 0.0143 ' / Cc= 0.900
Inlet / Outlet Invert= 92.75' / 92.65' S= 0.0143 ' / Cc= 0.900
Primary OutFlow Max=0.19 cfs @ 13.60 hrs HW=94.21' TW=0.00' (Dynamic Tailwater)
3=Culvert (Passes 0.19 cfs of 4.01 cfs potential flow)
1=Orifice (Orifice Controls 0.19 cfs @ 5.61 fps)
2=Grate ( Controls 0.00 cfs)
Pond 8P: INFILTRATION BASIN 3
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NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 12/19/2025
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Pond 8P: INFILTRATION BASIN 3
Pond 8P: INFILTRATION BASIN 3
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Page 164
Pond 8P: INFILTRATION BASIN 3
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Analysis - Failure NOAA 24-hr D 10 YR-C Rainfall=5.38" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 165
Hydrograph for Pond 8P: INFILTRATION BASIN 3
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Primary (cfs)
0.000.002,30092.750.00
2.000.002,30092.750.00
4.000.012,32092.770.00
6.000.022,37892.820.01
8.000.042,45692.890.03
10.000.062,52492.940.05
12.000.232,83793.220.10
14.000.173,96494.200.19
16.000.133,71093.980.17
18.000.063,28293.600.14
20.000.042,79793.180.09
22.000.042,55292.970.06
24.000.032,47692.900.04
26.000.002,39792.830.01
28.000.002,36092.800.01
30.000.002,34392.790.00
32.000.002,33392.780.00
34.000.002,32792.770.00
36.000.002,32392.770.00
38.000.002,32092.770.00
40.000.002,31892.770.00
42.000.002,31692.760.00
44.000.002,31492.760.00
46.000.002,31392.760.00
48.000.002,31292.760.00
50.000.002,31192.760.00
52.000.002,31092.760.00
54.000.002,31092.760.00
56.000.002,30992.760.00
58.000.002,30992.760.00
60.000.002,30892.760.00
62.000.002,30892.760.00
64.000.002,30792.760.00
66.000.002,30792.760.00
68.000.002,30792.760.00
70.000.002,30692.760.00
72.000.002,30692.760.00
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Analysis - Failure NOAA 24-hr D 10 YR-C Rainfall=5.38" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 166
Stage-Discharge for Pond 8P: INFILTRATION BASIN 3
Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)
90.750.0093.350.12
90.800.0093.400.12
90.850.0093.450.13
90.900.0093.500.13
90.950.0093.550.14
91.000.0093.600.14
91.050.0093.650.15
91.100.0093.700.15
91.150.0093.750.16
91.200.0093.800.16
91.250.0093.850.16
91.300.0093.900.17
91.350.0093.950.17
91.400.0094.000.18
91.450.0094.050.18
91.500.0094.100.18
91.550.0094.150.19
91.600.0094.200.19
91.650.0094.250.19
91.700.0094.300.20
91.750.0094.350.20
91.800.0094.400.20
91.850.0094.450.21
91.900.0094.500.21
91.950.0094.550.80
92.000.0094.601.87
92.050.0094.653.26
92.100.0094.704.90
92.150.0094.755.61
92.200.0094.805.74
92.250.0094.855.86
92.300.0094.905.98
92.350.0094.956.10
92.400.0095.006.22
92.450.00
92.500.00
92.550.00
92.600.00
92.650.00
92.700.00
92.750.00
92.800.00
92.850.02
92.900.03
92.950.05
93.000.06
93.050.07
93.100.08
93.150.09
93.200.10
93.250.10
93.300.11
Page 1311 Download HTML
Analysis - Failure NOAA 24-hr D 10 YR-C Rainfall=5.38" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 167
Stage-Area-Storage for Pond 8P: INFILTRATION BASIN 3
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
90.751,150093.351,1502,990
90.801,1505793.401,1503,048
90.851,15011593.451,1503,105
90.901,15017393.501,1503,163
90.951,15023093.551,1503,220
91.001,15028893.601,1503,277
91.051,15034593.651,1503,335
91.101,15040293.701,1503,393
91.151,15046093.751,1503,450
91.201,15051893.801,1503,507
91.251,15057593.851,1503,565
91.301,15063293.901,1503,623
91.351,15069093.951,1503,680
91.401,15074894.001,1503,738
91.451,15080594.051,1503,795
91.501,15086394.101,1503,852
91.551,15092094.151,1503,910
91.601,15097794.201,1503,968
91.651,1501,03594.251,1504,025
91.701,1501,09394.301,1504,082
91.751,1501,15094.351,1504,140
91.801,1501,20794.401,1504,198
91.851,1501,26594.451,1504,255
91.901,1501,32394.501,1504,313
91.951,1501,38094.551,1504,370
92.001,1501,43894.601,1504,427
92.051,1501,49594.651,1504,485
92.101,1501,55294.701,1504,543
92.151,1501,61094.751,1504,600
92.201,1501,66894.801,1504,657
92.251,1501,72594.851,1504,715
92.301,1501,78294.901,1504,773
92.351,1501,84094.951,1504,830
92.401,1501,89895.001,1504,888
92.451,1501,955
92.501,1502,013
92.551,1502,070
92.601,1502,127
92.651,1502,185
92.701,1502,243
92.751,1502,300
92.801,1502,357
92.851,1502,415
92.901,1502,473
92.951,1502,530
93.001,1502,588
93.051,1502,645
93.101,1502,702
93.151,1502,760
93.201,1502,818
93.251,1502,875
93.301,1502,932
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Analysis - Failure NOAA 24-hr D 10 YR-C Rainfall=5.38" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 168
Summary for Pond 33P: INFILTRATION BASIN 2
Inflow Area = 30,707 sf, 39.00% Impervious, Inflow Depth = 2.16" for 10 YR-C event Inflow = 0.74 cfs @ 12.20 hrs, Volume= 5,524 cf Outflow = 0.15 cfs @ 13.34 hrs, Volume= 5,515 cf, Atten= 80%, Lag= 68.2 min Primary = 0.15 cfs @ 13.34 hrs, Volume= 5,515 cf Routed to Link 33L : POA 2 Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs / 3 Automatic Starting Elev= 93.65' Surf.Area= 1,442 sf Storage= 1,902 cf Peak Elev= 94.58' @ 13.34 hrs Surf.Area= 1,989 sf Storage= 3,488 cf (1,587 cf above start) Plug-Flow detention time= 454.0 min calculated for 3,613 cf (65% of inflow) Center-of-Mass det. time= 139.5 min (1,003.6 - 864.1)
VolumeInvertAvail.StorageStorage Description
#191.65'4,378 cfCustom Stage Data (Prismatic)Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
91.6552000
92.00651205205
93.001,0948731,077
94.001,6291,3622,439
95.002,2491,9394,378
DeviceRoutingInvertOutlet Devices
#1Device 393.65'2.5" Vert. Orifice C = 0.600
#2Device 394.70'48.0" x 48.0" Horiz. Grate C = 0.600
#3Primary93.65'12.0" Round Culvert L = 17.0' RCP, groove end projecting, Ke = 0.200Inlet / Outlet Invert= $ 93.65'/93.50' $ S = 0.0088'/' Cc = 0.900n=0.012 Concrete pipe, finished, Flow Area=0.79 sf
Primary OutFlow Max=0.15 cfs @ 13.34 hrs HW=94.58' TW=0.00' (Dynamic Tailwater) 3=Culvert (Passes 0.15 cfs of 2.32 cfs potential flow) 1=Orifice (Orifice Controls 0.15 cfs @ 4.38 fps) 2=Grate (Controls 0.00 cfs)
Pond 33P: INFILTRATION BASIN 2 Grate
Quiffect
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Analysis - Failure NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 33P: INFILTRATION BASIN 2
Pond 33P: INFILTRATION BASIN 2
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Page 170
Pond 33P: INFILTRATION BASIN 2
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Analysis - FailureNOAA 24-hr D10 YR-C Rainfall=5.38"
Prepared by Civil Core ConsultingPrinted12/19/2025
HydroCAD\textregistered 10.20-8a s/n 13637\circledR 2025 HydroCAD Software Solutions LLCPage 171
Hydrograph for Pond 33P: INFILTRATION BASIN 2
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Primary (cfs)
0.000.001,90293.650.00
2.000.001,90293.650.00
4.000.011,91993.660.00
6.000.021,99793.720.01
8.000.032,07193.770.02
10.000.052,14593.810.04
12.000.382,46194.010.08
14.000.113,43194.550.15
16.000.073,05494.350.13
18.000.062,68894.150.10
20.000.062,45294.010.08
22.000.042,28193.900.06
24.000.032,15093.820.04
26.000.002,03693.740.01
28.000.001,98793.710.01
30.000.001,96393.690.00
32.000.001,94993.680.00
34.000.001,94193.680.00
36.000.001,93493.670.00
38.000.001,93093.670.00
40.000.001,92793.670.00
42.000.001,92493.670.00
44.000.001,92293.660.00
46.000.001,92093.660.00
48.000.001,91993.660.00
50.000.001,91793.660.00
52.000.001,91693.660.00
54.000.001,91593.660.00
56.000.001,91493.660.00
58.000.001,91493.660.00
60.000.001,91393.660.00
62.000.001,91293.660.00
64.000.001,91293.660.00
66.000.001,91193.660.00
68.000.001,91193.660.00
70.000.001,91193.660.00
72.000.001,91093.660.00
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NOAA 24-hr D 10 YR-C Rainfall=5.38"
Analysis - Failure NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Printed 12/19/2025
Page 172
Stage-Discharge for Pond 33P: INFILTRATION BASIN 2
Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)
91.650.0092.690.0093.730.01
91.670.0092.710.0093.750.02
91.690.0092.730.0093.770.02
91.710.0092.750.0093.790.03
91.730.0092.770.0093.810.04
91.750.0092.790.0093.830.05
91.770.0092.810.0093.850.05
91.790.0092.830.0093.870.06
91.810.0092.850.0093.890.06
91.830.0092.870.0093.910.06
91.850.0092.890.0093.930.07
91.870.0092.910.0093.950.07
91.890.0092.930.0093.970.08
91.910.0092.950.0093.990.08
91.930.0092.970.0094.010.08
91.950.0092.990.0094.030.09
91.970.0093.010.0094.050.09
91.990.0093.030.0094.070.09
92.010.0093.050.0094.090.10
92.030.0093.070.0094.110.10
92.050.0093.090.0094.130.10
92.070.0093.110.0094.150.10
92.090.0093.130.0094.170.11
92.110.0093.150.0094.190.11
92.130.0093.170.0094.210.11
92.150.0093.190.0094.230.11
92.170.0093.210.0094.250.12
92.190.0093.230.0094.270.12
92.210.0093.250.0094.290.12
92.230.0093.270.0094.310.12
92.250.0093.290.0094.330.12
92.270.0093.310.0094.350.13
92.290.0093.330.0094.370.13
92.310.0093.350.0094.390.13
92.330.0093.370.0094.410.13
92.350.0093.390.0094.430.13
92.370.0093.410.0094.450.14
92.390.0093.430.0094.470.14
92.410.0093.450.0094.490.14
92.430.0093.470.0094.510.14
92.450.0093.490.0094.530.14
92.470.0093.510.0094.550.15
92.490.0093.530.0094.570.15
92.510.0093.550.0094.590.15
92.530.0093.570.0094.610.15
92.550.0093.590.0094.630.15
92.570.0093.610.0094.650.16
92.590.0093.630.0094.670.16
92.610.0093.650.0094.690.16
92.630.0093.670.0094.710.21
92.650.0093.690.0094.730.43
92.670.0093.710.0194.750.75
Elevation (feet)Primary (cfs)
94.771.13
94.791.58
94.812.08
94.832.62
94.853.21
94.873.26
94.893.31
94.913.35
94.933.39
94.953.41
94.973.43
94.993.43
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NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 12/19/2025 ons LLC Page 173
Analysis - Failure NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Area-Storage for Pond 33P: INFILTRATION BASIN 2
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
91.655200
91.7053926
91.7555754
91.8057682
91.85595111
91.90614142
91.95632173
92.00651205
92.05673238
92.10695272
92.15717308
92.20740344
92.25762382
92.30784420
92.35806460
92.40828501
92.45850543
92.50873586
92.55895630
92.60917675
92.65939722
92.70961769
92.75983818
92.801,005867
92.851,028918
92.901,050970
92.951,0721,023
93.001,0941,077
93.051,1211,133
93.101,1481,190
93.151,1741,248
93.201,2011,307
93.251,2281,368
93.301,2551,430
93.351,2811,493
93.401,3081,558
93.451,3351,624
93.501,3621,691
93.551,3881,760
93.601,4151,830
93.651,4421,902
93.701,4691,974
93.751,4952,048
93.801,5222,124
93.851,5492,201
93.901,5762,279
93.951,6022,358
94.001,6292,439
94.051,6602,521
94.101,6912,605
94.151,7222,690
94.201,7532,777
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
94.251,7842,866
94.301,8152,956
94.351,8463,047
94.401,8773,140
94.451,9083,235
94.501,9393,331
94.551,9703,429
94.602,0013,528
94.652,0323,629
94.702,0633,731
94.752,0943,835
94.802,1253,941
94.852,1564,048
94.902,1874,156
94.952,2184,266
95.002,2494,378
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Analysis - Failure NOAA 24-hr D 10 YR-C Rainfall=5.38" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 174
Summary for Pond 42P: BIORENTION BASIN 3A
Inflow Area = 35,171 sf, 15.78% Impervious, Inflow Depth = 1.05" for 10 YR-C event Inflow = 0.72 cfs @ 12.09 hrs, Volume= 3,078 cf Outflow = 0.71 cfs @ 12.10 hrs, Volume= 2,978 cf, Atten= 1%, Lag= 0.4 min Primary = 0.71 cfs @ 12.10 hrs, Volume= 2,978 cf Routed to Pond 8P : INFILTRATION BASIN 3 Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs / 3 Peak Elev= 94.55' @ 12.10 hrs Surf.Area= 913 sf Storage= 538 cf Plug-Flow detention time= 80.8 min calculated for 2,978 cf (97% of inflow) Center-of-Mass det. time= 60.8 min ( 867.4 - 806.6 )
VolumeInvertAvail.StorageStorage Description
#193.30'1,041 cfCustom Stage Data (Prismatic)Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
93.307700
94.00417173173
95.001,3198681,041
DeviceRoutingInvertOutlet Devices
#1Device 393.80'2.5" Vert. Orifice C= 0.600 Limited to weir flow at low heads
#2Device 394.50'48.0" x 48.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads
#3Primary90.80'12.0" Round Culvert L= 11.0' RCP, groove end projecting, Ke= 0.200 Inlet / Outlet Invert= 90.80' / 90.75' S= 0.0045'' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 0.79 sf
Primary OutFlow Max=0.70 cfs @ 12.10 hrs HW=94.55' TW=93.34' (Dynamic Tailwater) 3=Culvert (Passes 0.70 cfs of 5.19 cfs potential flow) 1=Orifice (Orifice Controls 0.13 cfs @ 3.87 fps) 2=Grate (Weir Controls 0.57 cfs @ 0.73 fps)
Image
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NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 12/19/2025
Analysis - Failure NOAA 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
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Pond 42P: BIORENTION BASIN 3A
Pond 42P: BIORENTION BASIN 3A
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Analysis - Failure NOA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LL
Page 176
Pond 42P: BIORENTION BASIN 3A
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NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 12/19/2025
Analysis - Failure NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond 42P: BIORENTION BASIN 3A
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Primary (cfs)
0.000.00093.300.00
2.000.001293.420.00
4.000.016093.660.00
6.000.0112093.860.01
8.000.0213293.900.02
10.000.0314693.930.03
12.000.4443594.430.12
14.000.0644594.440.08
16.000.0423294.120.06
18.000.0314593.930.03
20.000.0214093.920.02
22.000.0213793.910.02
24.000.0213493.900.02
26.000.0010693.820.00
28.000.0010393.810.00
30.000.0010293.810.00
32.000.0010193.810.00
34.000.0010193.800.00
36.000.0010093.800.00
38.000.0010093.800.00
40.000.0010093.800.00
42.000.0010093.800.00
44.000.0010093.800.00
46.000.0010093.800.00
48.000.0010093.800.00
50.000.0010093.800.00
52.000.0010093.800.00
54.000.0010093.800.00
56.000.0010093.800.00
58.000.0010093.800.00
60.000.0010093.800.00
62.000.0010093.800.00
64.000.0010093.800.00
66.000.0010093.800.00
68.000.0010093.800.00
70.000.0010093.800.00
72.000.0010093.800.00
Page 177
Page 1322 Download HTML
NOAA 24-hr D 10 YR-C Rainfall=5.38"
Analysis - Failure NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Printed 12/19/2025
Page 178
Stage-Discharge for Pond 42P: BIORENTION BASIN 3A
Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)
93.300.0093.820.0094.340.11
93.310.0093.830.0094.350.11
93.320.0093.840.0094.360.11
93.330.0093.850.0094.370.11
93.340.0093.860.0194.380.11
93.350.0093.870.0194.390.11
93.360.0093.880.0194.400.12
93.370.0093.890.0194.410.12
93.380.0093.900.0294.420.12
93.390.0093.910.0294.430.12
93.400.0093.920.0294.440.12
93.410.0093.930.0394.450.12
93.420.0093.940.0394.460.12
93.430.0093.950.0394.470.12
93.440.0093.960.0494.480.12
93.450.0093.970.0494.490.13
93.460.0093.980.0594.500.13
93.470.0093.990.0594.510.18
93.480.0094.000.0594.520.28
93.490.0094.010.0594.530.40
93.500.0094.020.0694.540.55
93.510.0094.030.0694.550.72
93.520.0094.040.0694.560.90
93.530.0094.050.0694.571.10
93.540.0094.060.0694.581.32
93.550.0094.070.0794.591.55
93.560.0094.080.0794.601.79
93.570.0094.090.0794.612.05
93.580.0094.100.0794.622.31
93.590.0094.110.0794.632.59
93.600.0094.120.0894.642.88
93.610.0094.130.0894.653.18
93.620.0094.140.0894.663.49
93.630.0094.150.0894.673.81
93.640.0094.160.0894.684.14
93.650.0094.170.0894.694.48
93.660.0094.180.0994.704.83
93.670.0094.190.0994.715.18
93.680.0094.200.0994.725.55
93.690.0094.210.0994.735.92
93.700.0094.220.0994.746.30
93.710.0094.230.0994.756.69
93.720.0094.240.1094.766.70
93.730.0094.250.1094.776.72
93.740.0094.260.1094.786.74
93.750.0094.270.1094.796.75
93.760.0094.280.1094.806.77
93.770.0094.290.1094.816.78
93.780.0094.300.1094.826.80
93.790.0094.310.1094.836.82
93.800.0094.320.1194.846.83
93.810.0094.330.1194.856.85
Elevation (feet)Primary (cfs)
94.866.87
94.876.88
94.886.90
94.896.92
94.906.93
94.916.95
94.926.96
94.936.98
94.947.00
94.957.01
94.967.03
94.977.04
94.987.06
94.997.07
95.007.09
Page 1323 Download HTML
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 12/19/2025
Analysis - Failure NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
'R-C Rainfall=5.38" Printed 12/19/2025 Page 179
Stage-Area-Storage for Pond 42P: BIORENTION BASIN 3A
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
93.3077094.34724367
93.3287294.36742381
93.3496394.38760396
93.36106594.40778412
93.38116894.42796428
93.401261094.44814444
93.421351394.46832460
93.441451694.48850477
93.461551994.50868494
93.481642294.52886512
93.501742594.54904530
93.521842994.56922548
93.541943294.58940566
93.562033694.60958585
93.582134194.62976605
93.602234594.64994625
93.622325094.661,012645
93.642425494.681,030665
93.662525994.701,048686
93.682626494.721,066707
93.702717094.741,084728
93.722817594.761,103750
93.742918194.781,121773
93.763008794.801,139795
93.783109394.821,157818
93.803209994.841,175841
93.8233010694.861,193865
93.8433911294.881,211889
93.8634911994.901,229914
93.8835912694.921,247938
93.9036813494.941,265963
93.9237814194.961,283989
93.9438814994.981,3011,015
93.9639815795.001,3191,041
93.98407165
94.00417173
94.02435181
94.04453190
94.06471200
94.08489209
94.10507219
94.12525229
94.14543240
94.16561251
94.18579263
94.20597274
94.22615286
94.24633299
94.26652312
94.28670325
94.30688339
94.32706353
Page 1324 Download HTML
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 12/19/2025 ons LLC Page 180
Analysis - Failure NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Link 32L: POA1
Inflow Area = 80,967 sf, 34.36% Impervious, Inflow Depth = 1.95" for 10 YR-C event Inflow = 0.62 cfs @ 12.10 hrs, Volume = 13,179 cf Primary = 0.62 cfs @ 12.10 hrs, Volume = 13,179 cf, Atten = 0%, Lag = 0.0 min
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 32L: POA1
Page 1325 Download HTML
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 12/19/2025
Analysis - Failure NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
R-C Rainfall=5.38" Printed 12/19/2025 Page 181
Hydrograph for Link 32L: POA1
Time (hours)Inflow (cfs)Elevation (feet)Primary (cfs)
0.000.000.000.00
1.000.000.000.00
2.000.020.000.02
3.000.030.000.03
4.000.030.000.03
5.000.040.000.04
6.000.050.000.05
7.000.060.000.06
8.000.070.000.07
9.000.080.000.08
10.000.100.000.10
11.000.140.000.14
12.000.430.000.43
13.000.320.000.32
14.000.300.000.30
15.000.280.000.28
16.000.260.000.26
17.000.240.000.24
18.000.220.000.22
19.000.200.000.20
20.000.180.000.18
21.000.160.000.16
22.000.140.000.14
23.000.130.000.13
24.000.110.000.11
25.000.080.000.08
26.000.040.000.04
27.000.020.000.02
28.000.000.000.00
29.000.000.000.00
30.000.000.000.00
31.000.000.000.00
32.000.000.000.00
33.000.000.000.00
34.000.000.000.00
35.000.000.000.00
36.000.000.000.00
37.000.000.000.00
38.000.000.000.00
39.000.000.000.00
40.000.000.000.00
41.000.000.000.00
42.000.000.000.00
43.000.000.000.00
44.000.000.000.00
45.000.000.000.00
46.000.000.000.00
47.000.000.000.00
48.000.000.000.00
49.000.000.000.00
50.000.000.000.00
51.000.000.000.00
Time (hours)Inflow (cfs)Elevation (feet)Primary (cfs)
52.000.000.000.00
53.000.000.000.00
54.000.000.000.00
55.000.000.000.00
56.000.000.000.00
57.000.000.000.00
58.000.000.000.00
59.000.000.000.00
60.000.000.000.00
61.000.000.000.00
62.000.000.000.00
63.000.000.000.00
64.000.000.000.00
65.000.000.000.00
66.000.000.000.00
67.000.000.000.00
68.000.000.000.00
69.000.000.000.00
70.000.000.000.00
71.000.000.000.00
72.000.000.000.00
Page 1326 Download HTML
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 12/19/2025 ons LLC Page 182
Analysis - Failure NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Link 33L: POA 2
Inflow Area = 30,707 sf, 39.00% Impervious, Inflow Depth > 2.16" for 10 YR-C event Inflow = 0.15 cfs @ 13.34 hrs, Volume= 5,515 cf Primary = 0.15 cfs @ 13.34 hrs, Volume= 5,515 cf, Atten=0%, Lag=0.0 min
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 33L: POA 2
Page 1327 Download HTML
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 12/19/2025
Analysis - Failure NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
R-C Rainfall=5.38" Printed 12/19/2025 Page 183
Hydrograph for Link 33L: POA 2
Time (hours)Inflow (cfs)Elevation (feet)Primary (cfs)
0.000.000.000.00
1.000.000.000.00
2.000.000.000.00
3.000.000.000.00
4.000.000.000.00
5.000.000.000.00
6.000.010.000.01
7.000.010.000.01
8.000.020.000.02
9.000.030.000.03
10.000.040.000.04
11.000.050.000.05
12.000.080.000.08
13.000.150.000.15
14.000.150.000.15
15.000.140.000.14
16.000.130.000.13
17.000.110.000.11
18.000.100.000.10
19.000.090.000.09
20.000.080.000.08
21.000.070.000.07
22.000.060.000.06
23.000.050.000.05
24.000.040.000.04
25.000.030.000.03
26.000.010.000.01
27.000.010.000.01
28.000.010.000.01
29.000.000.000.00
30.000.000.000.00
31.000.000.000.00
32.000.000.000.00
33.000.000.000.00
34.000.000.000.00
35.000.000.000.00
36.000.000.000.00
37.000.000.000.00
38.000.000.000.00
39.000.000.000.00
40.000.000.000.00
41.000.000.000.00
42.000.000.000.00
43.000.000.000.00
44.000.000.000.00
45.000.000.000.00
46.000.000.000.00
47.000.000.000.00
48.000.000.000.00
49.000.000.000.00
50.000.000.000.00
51.000.000.000.00
Time (hours)Inflow (cfs)Elevation (feet)Primary (cfs)
52.000.000.000.00
53.000.000.000.00
54.000.000.000.00
55.000.000.000.00
56.000.000.000.00
57.000.000.000.00
58.000.000.000.00
59.000.000.000.00
60.000.000.000.00
61.000.000.000.00
62.000.000.000.00
63.000.000.000.00
64.000.000.000.00
65.000.000.000.00
66.000.000.000.00
67.000.000.000.00
68.000.000.000.00
69.000.000.000.00
70.000.000.000.00
71.000.000.000.00
72.000.000.000.00
Page 1328 Download HTML
Summary for Link 34L: POA 3
Inflow Area = 43,883 sf, 32.50% Impervious, Inflow Depth > 1.83" for 10 YR-C event Inflow = 0.19 cfs @ 13.60 hrs, Volume= 6,702 cf Primary = 0.19 cfs @ 13.60 hrs, Volume= 6,702 cf, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 34L: POA 3
Hydrograph
Page 1329 Download HTML
NOAA 24-hr D 10 YR-C Rainfall=5.38" Printed 12/19/2025
Analysis - Failure NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
R-C Rainfall=5.38" Printed 12/19/2025 Page 185
Hydrograph for Link 34L: POA 3
Time (hours)Inflow (cfs)Elevation (feet)Primary (cfs)
0.000.000.000.00
1.000.000.000.00
2.000.000.000.00
3.000.000.000.00
4.000.000.000.00
5.000.000.000.00
6.000.010.000.01
7.000.020.000.02
8.000.030.000.03
9.000.040.000.04
10.000.050.000.05
11.000.070.000.07
12.000.100.000.10
13.000.190.000.19
14.000.190.000.19
15.000.180.000.18
16.000.170.000.17
17.000.160.000.16
18.000.140.000.14
19.000.120.000.12
20.000.090.000.09
21.000.070.000.07
22.000.060.000.06
23.000.040.000.04
24.000.040.000.04
25.000.020.000.02
26.000.010.000.01
27.000.010.000.01
28.000.010.000.01
29.000.000.000.00
30.000.000.000.00
31.000.000.000.00
32.000.000.000.00
33.000.000.000.00
34.000.000.000.00
35.000.000.000.00
36.000.000.000.00
37.000.000.000.00
38.000.000.000.00
39.000.000.000.00
40.000.000.000.00
41.000.000.000.00
42.000.000.000.00
43.000.000.000.00
44.000.000.000.00
45.000.000.000.00
46.000.000.000.00
47.000.000.000.00
48.000.000.000.00
49.000.000.000.00
50.000.000.000.00
51.000.000.000.00
Time (hours)Inflow (cfs)Elevation (feet)Primary (cfs)
52.000.000.000.00
53.000.000.000.00
54.000.000.000.00
55.000.000.000.00
56.000.000.000.00
57.000.000.000.00
58.000.000.000.00
59.000.000.000.00
60.000.000.000.00
61.000.000.000.00
62.000.000.000.00
63.000.000.000.00
64.000.000.000.00
65.000.000.000.00
66.000.000.000.00
67.000.000.000.00
68.000.000.000.00
69.000.000.000.00
70.000.000.000.00
71.000.000.000.00
72.000.000.000.00
Page 1330 Download HTML
Analysis - FailureMulti-Event Tables
Prepared by Civil Core ConsultingPrinted 12/19/2025
HydroCAD\textregistered 10.20-8a s/n 13637\circledR 2025 HydroCAD Software Solutions LLCPage 186
Events for Subcatchment 2S: DA-P1 PERVOUS
EventRainfall (inches)Runoff (cfs)Volume (cubic-feet)Depth (inches)
2 YR-C3.420.00240.01
10 YR-C5.380.061,2550.28
Page 1331 Download HTML
Analysis - FailureMulti-Event Tables
Prepared by Civil Core ConsultingPrinted 12/19/2025
HydroCAD\textregistered 10.20-8a s/n 13637\circledR 2025 HydroCAD Software Solutions LLCPage 187
Events for Subcatchment 3S: DA-P3 PERVOUS
EventRainfall (inches)Runoff (cfs)Volume (cubic-feet)Depth (inches)
2 YR-C3.420.00130.01
10 YR-C5.380.047000.28
Page 1332 Download HTML
Analysis - FailureMulti-Event Tables
Prepared by Civil Core ConsultingPrinted 12/19/2025
HydroCAD\textregistered 10.20-8a s/n 13637\circledR 2025 HydroCAD Software Solutions LLCPage 188
Events for Subcatchment 4S: DA-P2 PERVOUS
EventRainfall (inches)Runoff (cfs)Volume (cubic-feet)Depth (inches)
2 YR-C3.420.0080.01
10 YR-C5.380.024420.28
Page 1333 Download HTML
Analysis - FailureMulti-Event Tables
Prepared by Civil Core ConsultingPrinted 12/19/2025
HydroCAD\textregistered 10.20-8a s/n 13637\circledR 2025 HydroCAD Software Solutions LLCPage 189
Events for Subcatchment 5S: Typ. Roof
EventRainfall (inches)Runoff (cfs)Volume (cubic-feet)Depth (inches)
2 YR-C3.420.154913.19
10 YR-C5.380.247935.14
Page 1334 Download HTML
Analysis - FailureMulti-Event Tables
Prepared by Civil Core ConsultingPrinted 12/19/2025
HydroCAD\textregistered 10.20-8a s/n 13637\circledR 2025 HydroCAD Software Solutions LLCPage 190
Events for Subcatchment 6S: DA-P3 IMPERVIOUS
EventRainfall (inches)Runoff (cfs)Volume (cubic-feet)Depth (inches)
2 YR-C3.420.592,3143.19
10 YR-C5.380.933,7345.14
Page 1335 Download HTML
Analysis - FailureMulti-Event Tables
Prepared by Civil Core ConsultingPrinted 12/19/2025
HydroCAD\textregistered 10.20-8a s/n 13637\circledR 2025 HydroCAD Software Solutions LLCPage 191
Events for Subcatchment 7S: DA-P2 IMPERVIOUS
EventRainfall (inches)Runoff (cfs)Volume (cubic-feet)Depth (inches)
2 YR-C3.420.562,1983.19
10 YR-C5.380.893,5475.14
Page 1336 Download HTML
Analysis - FailureMulti-Event Tables
Prepared by Civil Core ConsultingPrinted 12/19/2025
HydroCAD\textregistered 10.20-8a s/n 13637\circledR 2025 HydroCAD Software Solutions LLCPage 192
Events for Subcatchment 8S: DA-P1 IMPERVIOUS
EventRainfall (inches)Runoff (cfs)Volume (cubic-feet)Depth (inches)
2 YR-C3.421.334,6273.19
10 YR-C5.382.117,4675.14
Page 1337 Download HTML
Analysis - FailureMulti-Event Tables
Prepared by Civil Core ConsultingPrinted 12/19/2025
HydroCAD\textregistered 10.20-8a s/n 13637\circledR 2025 HydroCAD Software Solutions LLCPage 193
Events for Subcatchment 14S: LOT 11 Roof
EventRainfall (inches)Runoff (cfs)Volume (cubic-feet)Depth (inches)
2 YR-C3.420.257973.19
10 YR-C5.380.391,2865.14
Page 1338 Download HTML
Analysis - FailureMulti-Event Tables
Prepared by Civil Core ConsultingPrinted 12/19/2025
HydroCAD\textregistered 10.20-8a s/n 13637\circledR 2025 HydroCAD Software Solutions LLCPage 194
Events for Subcatchment 16S: Typ. Roof
EventRainfall (inches)Runoff (cfs)Volume (cubic-feet)Depth (inches)
2 YR-C3.420.154913.19
10 YR-C5.380.247935.14
Page 1339 Download HTML
Analysis - FailureMulti-Event Tables
Prepared by Civil Core ConsultingPrinted 12/19/2025
HydroCAD\textregistered 10.20-8a s/n 13637\circledR 2025 HydroCAD Software Solutions LLCPage 195
Events for Subcatchment 17S: Typ. Roof
EventRainfall (inches)Runoff (cfs)Volume (cubic-feet)Depth (inches)
2 YR-C3.420.154913.19
10 YR-C5.380.247935.14
Page 1340 Download HTML
Analysis - FailureMulti-Event Tables
Prepared by Civil Core ConsultingPrinted 12/19/2025
HydroCAD\circledR 10.20-8a s/n 13637\circledC 2025 HydroCAD Software Solutions LLCPage 196
Events for Subcatchment 18S: Typ. Roof
EventRainfall (inches)Runoff (cfs)Volume (cubic-feet)Depth (inches)
2 YR-C3.420.154913.19
10 YR-C5.380.247935.14
Page 1341 Download HTML
Analysis - FailureMulti-Event Tables
Prepared by Civil Core ConsultingPrinted 12/19/2025
HydroCAD\textregistered 10.20-8a s/n 13637\circledR 2025 HydroCAD Software Solutions LLCPage 197
Events for Subcatchment 35S: Typ. Roof
EventRainfall (inches)Runoff (cfs)Volume (cubic-feet)Depth (inches)
2 YR-C3.420.154913.19
10 YR-C5.380.247935.14
Page 1342 Download HTML
Analysis - FailureMulti-Event Tables
Prepared by Civil Core ConsultingPrinted 12/19/2025
HydroCAD\circledR 10.20-8a s/n 13637\circledC 2025 HydroCAD Software Solutions LLCPage 198
Events for Subcatchment 36S: Typ. Roof
EventRainfall (inches)Runoff (cfs)Volume (cubic-feet)Depth (inches)
2 YR-C3.420.154913.19
10 YR-C5.380.247935.14
Page 1343 Download HTML
Analysis - FailureMulti-Event Tables
Prepared by Civil Core ConsultingPrinted 12/19/2025
HydroCAD\circledR 10.20-8a s/n 13637\circledC 2025 HydroCAD Software Solutions LLCPage 199
Events for Subcatchment 37S: Typ. Roof
EventRainfall (inches)Runoff (cfs)Volume (cubic-feet)Depth (inches)
2 YR-C3.420.154913.19
10 YR-C5.380.247935.14
Page 1344 Download HTML
Analysis - FailureMulti-Event Tables
Prepared by Civil Core ConsultingPrinted 12/19/2025
HydroCAD\circledR 10.20-8a s/n 13637\circledC 2025 HydroCAD Software Solutions LLCPage 200
Events for Subcatchment 38S: Typ. Roof
EventRainfall (inches)Runoff (cfs)Volume (cubic-feet)Depth (inches)
2 YR-C3.420.154913.19
10 YR-C5.380.247935.14
Page 1345 Download HTML
Analysis - FailureMulti-Event Tables
Prepared by Civil Core ConsultingPrinted 12/19/2025
HydroCAD\circledR 10.20-8a s/n 13637\circledC 2025 HydroCAD Software Solutions LLCPage 201
Events for Subcatchment 39S: Typ. Roof
EventRainfall (inches)Runoff (cfs)Volume (cubic-feet)Depth (inches)
2 YR-C3.420.154913.19
10 YR-C5.380.247935.14
Page 1346 Download HTML
Events for Pond 2P: Subusrface Infiltration Basin 1
EventInflow (cfs)Primary (cfs)Elevation (feet)Storage (acre-feet)Multi-Event Tables Printed 12/19/2025 Page 202
2 YR-C0.420.4291.590.141
10 YR-C0.620.6291.600.141
Page 1347 Download HTML
Events for Pond 3P: PERVIOUS PAVEMENT 2B
EventInflow (cfs)Primary (cfs)Elevation (feet)Storage (cubic-feet)
2 YR-C0.560.1294.62764
10 YR-C0.890.5894.84975
Page 1348 Download HTML
Events for Pond 4P: PERVIOUS PAVEMENT 3B
EventInflow (cfs)Primary (cfs)Elevation (feet)Storage (cubic-feet)
2 YR-C0.590.1594.71773
10 YR-C0.930.6794.85951
Page 1349 Download HTML
Events for Pond 5P: BIORETENTION BASIN 1A
EventInflow (cfs)Primary (cfs)Elevation (feet)Storage (cubic-feet)Multi-Event Tables Printed 12/19/2025 Page 205
2 YR-C1.930.2193.294,929
10 YR-C3.060.2994.677,004
Page 1350 Download HTML
Analysis - FailureMulti-Event Tables
Prepared by Civil Core ConsultingPrinted 12/19/2025
HydroCAD\circledR 10.20-8a s/n 13637\circledC 2025 HydroCAD Software Solutions LLCPage 206
Events for Pond 7P: BIORENTION BASIN 2A
EventInflow (cfs)Primary (cfs)Elevation (feet)Storage (cubic-feet)
2 YR-C0.300.3095.52174
10 YR-C0.480.4895.54178
Page 1351 Download HTML
Events for Pond 8P: INFILTRATION BASIN 3
EventInflow (cfs)Primary (cfs)Elevation (feet)Storage (cubic-feet)Multi-Event Tables Printed 12/19/2025 Page 207
2 YR-C0.260.1493.613,284
10 YR-C0.930.1994.213,979
Page 1352 Download HTML
Analysis - FailureMulti-Event Tables
Prepared by Civil Core ConsultingPrinted 12/19/2025
HydroCAD\textregistered 10.20-8a s/n 13637\circledR 2025 HydroCAD Software Solutions LLCPage 208
Events for Pond 33P: INFILTRATION BASIN 2
EventInflow (cfs)Primary (cfs)Elevation (feet)Storage (cubic-feet)
2 YR-C0.390.1094.162,708
10 YR-C0.740.1594.583,488
Page 1353 Download HTML
Analysis - FailureMulti-Event Tables
Prepared by Civil Core ConsultingPrinted 12/19/2025
HydroCAD\textregistered 10.20-8a s/n 13637\circledR 2025 HydroCAD Software Solutions LLCPage 209
Events for Pond 42P: BIORENTION BASIN 3A
EventInflow (cfs)Primary (cfs)Elevation (feet)Storage (cubic-feet)
2 YR-C0.450.1294.43439
10 YR-C0.720.7194.55538
Page 1354 Download HTML
Analysis - FailureMulti-Event Tables
Prepared by Civil Core ConsultingPrinted 12/19/2025
HydroCAD\textregistered 10.20-8a s/n 13637\circledR 2025 HydroCAD Software Solutions LLCPage 210
Events for Link 32L: POA1
EventInflow (cfs)Primary (cfs)Elevation (feet)
2 YR-C0.420.420.00
10 YR-C0.620.620.00
Page 1355 Download HTML
Analysis - FailureMulti-Event Tables
Prepared by Civil Core ConsultingPrinted 12/19/2025
HydroCAD\textregistered 10.20-8a s/n 13637\textregistered 2025 HydroCAD Software Solutions LLCPage1
Events for Link 33L: POA 2
EventInflow (cfs)Primary (cfs)Elevation (feet)
2 YR-C0.100.100.00
10 YR-C0.150.150.00
Page 1356 Download HTML
Analysis - FailureMulti-Event Tables
Prepared by Civil Core ConsultingPrinted 12/19/2025
HydroCAD\textregistered 10.20-8a s/n 13637\circledR 2025 HydroCAD Software Solutions LLCPage 212
Events for Link 34L: POA 3
EventInflow (cfs)Primary (cfs)Elevation (feet)
2 YR-C0.140.140.00
10 YR-C0.190.190.00
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Analysis - Failure Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Table of Contents Printed 12/19/2025
TABLE OF CONTENTS
Project Reports
1 Routing Diagram 2 Project Notes 3 Rainfall Events Listing (selected events) 4 Area Listing (all nodes) 5 Soil Listing (all nodes) 6 Ground Covers (all nodes) 7 Pipe Listing (all nodes)
2 YR-C Event
8 Node Listing
8 Node Listing 10 Subcat 2S: DA-P1 PERVIOUS 12 Subcat 3S: DA-P3 PERVIOUS 14 Subcat 4S: DA-P2 PERVIOUS 16 Subcat 5S: Typ. Roof 18 Subcat 6S: DA-P3 IMPERVIOUS 20 Subcat 7S: DA-P2 IMPERVIOUS 22 Subcat 8S: DA-P1 IMPERVIOUS 24 Subcat 14S: LOT 11 Roof 26 Subcat 16S: Typ. Roof 28 Subcat 17S: Typ. Roof 30 Subcat 18S: Typ. Roof 32 Subcat 35S: Typ. Roof 34 Subcat 36S: Typ. Roof 36 Subcat 37S: Typ. Roof 38 Subcat 38S: Typ. Roof 40 Subcat 39S: Typ. Roof 42 Pond 2P: Subsurface Infiltration Basin 1 49 Pond 3P: PERVIOUS PAVEMENT 2B 55 Pond 4P: PERVIOUS PAVEMENT 3B 61 Pond 5P: BIORETENTION BASIN 1A 67 Pond 7P: BIORETENTION BASIN 2A 73 Pond 8P: INFILTRATION BASIN 3 79 Pond 33P: INFILTRATION BASIN 2 85 Pond 42P: BIORETENTION BASIN 3A 91 Link 32L: POA1 93 Link 33L: POA 2 95 Link 34L: POA 3
10 YR-C Event
97 Node Listing 99 Subcat 2S: DA-P1 PERVIOUS 101 Subcat 3S: DA-P3 PERVIOUS 103 Subcat 4S: DA-P2 PERVIOUS 105 Subcat 5S: Typ. Roof 107 Subcat 6S: DA-P3 IMPERVIOUS 109 Subcat 7S: DA-P2 IMPERVIOUS 111 Subcat 8S: DA-P1 IMPERVIOUS 113 Subcat 14S: LOT 11 Roof 115 Subcat 16S: Typ. Roof
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Analysis - Failure Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Table of Contents Printed 12/19/2025
117 Subcat 17S: Typ. Roof 119 Subcat 18S: Typ. Roof 121 Subcat 35S: Typ. Roof 123 Subcat 36S: Typ. Roof 125 Subcat 37S: Typ. Roof 127 Subcat 38S: Typ. Roof 129 Subcat 39S: Typ. Roof 131 Pond 2P: Subusrface Infiltration Basin 1 138 Pond 3P: PERVIOUS PAVEMENT 2B 144 Pond 4P: PERVIOUS PAVEMENT 3B 150 Pond 5P: BIORETENTION BASIN 1A 156 Pond 7P: BIORENTION BASIN 2A 162 Pond 8P: INFILTRATION BASIN 3 168 Pond 33P: INFILTRATION BASIN 2 174 Pond 42P: BIORENTION BASIN 3A 180 Link 32L: POA1 182 Link 33L: POA 2 184 Link 34L: POA 3
Multi-Event Tables
186 Subcat 2S: DA-P1 PERVIOUS 187 Subcat 3S: DA-P3 PERVIOUS 188 Subcat 4S: DA-P2 PERVIOUS 189 Subcat 5S: Typ. Roof 190 Subcat 6S: DA-P3 IMPERVIOUS 191 Subcat 7S: DA-P2 IMPERVIOUS 192 Subcat 8S: DA-P1 IMPERVIOUS 193 Subcat 14S: LOT 11 Roof 194 Subcat 16S: Typ. Roof 195 Subcat 17S: Typ. Roof 196 Subcat 18S: Typ. Roof 197 Subcat 35S: Typ. Roof 198 Subcat 36S: Typ. Roof 199 Subcat 37S: Typ. Roof 200 Subcat 38S: Typ. Roof 201 Subcat 39S: Typ. Roof 202 Pond 2P: Subsurface Infiltration Basin 1 203 Pond 3P: PERVIOUS PAVEMENT 2B 204 Pond 4P: PERVIOUS PAVEMENT 3B 205 Pond 5P: BIORETENTION BASIN 1A 206 Pond 7P: BIORETENTION BASIN 2A 207 Pond 8P: INFILTRATION BASIN 3 208 Pond 33P: INFILTRATION BASIN 2 209 Pond 42P: BIORETENTION BASIN 3A 210 Link 32L: POA1 211 Link 33L: POA 2 212 Link 34L: POA 3
Page 1359 Download HTML
Stormwater Management Report South Hope Chapel Rd. Subdivision Project #23184
Appendix E โ€“ Water Quality Analysis
Page 1360 Download HTML
Routing Diagram for Analysis - Proposed Conditions Prepared by Civil Core Consulting, Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 1361 Download HTML
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Project Notes
Rainfall events imported from "240214_Analysis.hcp"
Printed 12/19/2025 Page 2
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Analysis - Proposed Conditions
Prepared by Civil Core Consulting Printed 12/19/2025
HydroCAD\circledR 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 3
Rainfall Events Listing (selected events)
Event# Event Name Storm Type Curve Mode Duration (hours) B/B Depth (inches) AMC
1 NJDEP WQ NJ DEP 2-hr Default 2.00 1 1.25 2
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Area Listing (selected nodes)
Area (sq-ft)CNDescription (subcatchment-numbers)
101,49539>75% Grass cover, Good, HSG A (18S, 20S, 23S)
8,71298Paved parking, HSG A (24S)
25,70098Paved roads w/curbs & sewers, HSG A (19S, 22S)
135,90754TOTAL AREA
Printed 12/19/2025 Page 4
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Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Soil Listing (selected nodes)
Area (sq-ft)Soil GroupSubcatchment Numbers
135,907HSG A18S, 19S, 20S, 22S, 23S, 24S
0HSG B
0HSG C
0HSG D
0Other
135,907TOTAL AREA
Printed 12/19/2025 Page 5
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Analysis - Proposed Conditions
Prepared by Civil Core Consulting Printed 12/19/2025
HydroCAD\textregistered 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 6
Ground Covers (selected nodes)
HSG-A (sq-ft)HSG-B (sq-ft)HSG-C (sq-ft)HSG-D (sq-ft)Other (sq-ft)Total (sq-ft)Ground Cover
101,4950000101,495>75% Grass cover, Good
8,71200008,712Paved parking
25,700000025,700Paved roads w/curbs & sewers
135,9070000135,907TOTAL AREA
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Analysis - Proposed Conditions
Prepared by Civil Core Consulting Printed 12/19/2025
HydroCAD\textregistered 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 7
Pipe Listing (selected nodes)
Line#Node NumberIn-Invert (feet)Out-Invert (feet)Length (feet)Slope (ft/ft)nWidth (inches)Diam/Height (inches)Inside-Fill (inches)Node Name
112P92.0891.6538.00.01130.0110.012.00.0
213P90.8090.7511.00.00450.0120.012.00.0
314P92.0090.7552.00.02400.0110.012.00.0
436P87.4887.0027.00.01780.0120.012.00.0
545P92.0391.6530.00.01270.0120.012.00.0
Page 1367 Download HTML
Analysis - Proposed Conditions NJ DEP 2-hr NJDEP WQ Rainfall=1.25" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 8
Time span=0.00-72.00 hrs, dt=0.01 hrs, 7201 points Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method
Runoff by SCS 1R-20 method, OH=Delmarva, Split Pervious/Imperv. UI as Pervious Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method Subcatchment18S: DA-P1 PERVOUS Flow Length=525' Tc=14.2 min CN=39/0 Runoff=0.00 cfs 0 cf Subcatchment19S: DA-P1 IMPERVOUS Flow Length=372' Runoff Area=0.400 ac 100.00% Impervious Runoff Depth=1.03" Flow Length=372' Slope=0.0200'/' Tc=2.5 min CN=0/98 Runoff=1.19 cfs 1,502 cf Subcatchment20S: DA-P2 PERVOUS Flow Length=168' Runoff Area=0.430 ac 0.00% Impervious Runoff Depth=0.00" Flow Length=168' Slope=0.0300'/' Tc=8.7 min CN=39/0 Runoff=0.00 cfs 0 cf Subcatchment22S: DA-P2 IMPERVOUS Flow Length=151' Runoff Area=0.190 ac 100.00% Impervious Runoff Depth=1.03" Flow Length=151' Slope=0.0200'/' Tc=0.9 min CN=0/98 Runoff=0.59 cfs 714 cf Subcatchment23S: DA-P3 PERVOUS Flow Length=363' Runoff Area=0.680 ac 0.00% Impervious Runoff Depth=0.00" Flow Length=363' Tc=11.5 min CN=39/0 Runoff=0.00 cfs 0 cf Subcatchment24S: DA-P3 IMPERVOUS Flow Length=155' Runoff Area=0.200 ac 100.00% Impervious Runoff Depth=1.03" Flow Length=155' Tc=4.3 min CN=0/98 Runoff=0.53 cfs 751 cf Pond 12P: PERVOUS PAVEMENT2B Peak Elev=94.20' Storage=487 cf Inflow=0.59 cfs 714 cf Outflow=0.09 cfs 711 cf Pond 13P: BIORENTION BASIN 3A Peak Elev=93.30' Storage=0 cf Inflow=0.00 cfs 0 cf Outflow=0.00 cfs 0 cf Pond 14P: PERVOUS PAVEMENT3B Peak Elev=94.22' Storage=503 cf Inflow=0.53 cfs 751 cf Outflow=0.09 cfs 748 cf Pond 36P: BIORETENTIONBASIN 1A Peak Elev=91.00' Storage=1,502 cf Inflow=1.19 cfs 1,502 cf Outflow=0.00 cfs 1 cf Pond 45P: BIORENTION BASIN 2A Peak Elev=94.30' Storage=0 cf Inflow=0.00 cfs 0 cf Outflow=0.00 cfs 0 cf Total Runoff Area = 135,907 sf Runoff Volume = 2,967 cf Average Runoff Depth = 0.2
Page 1368 Download HTML
NJ DEP 2-hr NJDEP WQ Rainfall=1.25" Printed 12/19/2025 tions LLC Page 9
Analysis - Proposed Conditions NJ DEF Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 18S: DA-P1 PERVIOUS
Runoff = 0.00 cfs @ 0.00 hrs, Volume= Routed to Pond 36P : BIORETENTION BASIN 1A
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NJ DEP 2-hr NJDEP WQ Rainfall=1.25"
Page 1369 Download HTML
NJ DEP 2-hr NJDEP WQ Rainfall=1.25" Printed 12/19/2025
Analysis - Proposed Conditions NJ D Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions Ltd
Hydrograph for Subcatchment 18S: DA-P1 PERVIOUS
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.001.250.000.000.00
4.001.250.000.000.00
6.001.250.000.000.00
8.001.250.000.000.00
10.001.250.000.000.00
12.001.250.000.000.00
14.001.250.000.000.00
16.001.250.000.000.00
18.001.250.000.000.00
20.001.250.000.000.00
22.001.250.000.000.00
24.001.250.000.000.00
26.001.250.000.000.00
28.001.250.000.000.00
30.001.250.000.000.00
32.001.250.000.000.00
34.001.250.000.000.00
36.001.250.000.000.00
38.001.250.000.000.00
40.001.250.000.000.00
42.001.250.000.000.00
44.001.250.000.000.00
46.001.250.000.000.00
48.001.250.000.000.00
50.001.250.000.000.00
52.001.250.000.000.00
54.001.250.000.000.00
56.001.250.000.000.00
58.001.250.000.000.00
60.001.250.000.000.00
62.001.250.000.000.00
64.001.250.000.000.00
66.001.250.000.000.00
68.001.250.000.000.00
70.001.250.000.000.00
72.001.250.000.000.00
Page 10
Page 1370 Download HTML
NJ DEP 2-hr NJDEP WQ Rainfall=1.25" Printed 12/19/2025 tions LLC Page 11
Analysis - Proposed Conditions NJ D Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions Ltd
Summary for Subcatchment 19S: DA-P1 IMPERVIOUS
Runoff = 1.19 cfs @ 1.09 hrs, Volume= Routed to Pond 36P : BIORETENTION BASIN 1A
1,502 cf, Depth= 1.03"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NJ DEP 2-hr NJDEP WQ Rainfall=1.25"
Area (ac) CN Description
0.400 98 Paved roads w/curbs & sewers, HSG A
0.400 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
1.4 235 0.0200 2.87 Shallow Concentrated Flow, Paved Kv= 20.3 fps
1.1 137 2.00 Direct Entry, Pipe Flow
2.5 372 Total
Subcatchment 19S: DA-P1_IMPERVIOUS
Subcatchment 19S: DA-P1 IMPERVIOUS
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours)
Page 1371 Download HTML
NJ DEP 2-hr NJDEP WQ Rainfall=1.25" Printed 12/19/2025
Analysis - Proposed Conditions NJ DB Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LL
Page 12
Hydrograph for Subcatchment 19S: DA-P1 IMPERVIOUS
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.001.250.001.030.04
4.001.250.001.030.00
6.001.250.001.030.00
8.001.250.001.030.00
10.001.250.001.030.00
12.001.250.001.030.00
14.001.250.001.030.00
16.001.250.001.030.00
18.001.250.001.030.00
20.001.250.001.030.00
22.001.250.001.030.00
24.001.250.001.030.00
26.001.250.001.030.00
28.001.250.001.030.00
30.001.250.001.030.00
32.001.250.001.030.00
34.001.250.001.030.00
36.001.250.001.030.00
38.001.250.001.030.00
40.001.250.001.030.00
42.001.250.001.030.00
44.001.250.001.030.00
46.001.250.001.030.00
48.001.250.001.030.00
50.001.250.001.030.00
52.001.250.001.030.00
54.001.250.001.030.00
56.001.250.001.030.00
58.001.250.001.030.00
60.001.250.001.030.00
62.001.250.001.030.00
64.001.250.001.030.00
66.001.250.001.030.00
68.001.250.001.030.00
70.001.250.001.030.00
72.001.250.001.030.00
Page 1372 Download HTML
NJ DEP 2-hr NJDEP WQ Rainfall=1.25" Printed 12/19/2025 tions LLC Page 13
Analysis - Proposed Conditions NJ DEF Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 20S: DA-P2 PERVIOUS
Runoff = 0.00 cfs @ 0.00 hrs, Volume= Routed to Pond 45P : BIORENTION BASIN 2A
0 cf, Depth = 0.00"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NJ DEP 2-hr NJDEP WQ Rainfall=1.25"
Area (ac) CN Description
0.430 39 >75% Grass cover, Good, HSG A
0.430 39 100.00% Pervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
7.8 60 0.0300 0.13 Sheet Flow, Grass: Dense n= 0.240 P2= 3.42"
0.9 108 2.00 Direct Entry, Pipe Flow
8.7 168 Total
Page 1373 Download HTML
NJ DEP 2-hr NJDEP WQ Rainfall=1.25" Printed 12/19/2025
Analysis - Proposed Conditions NJ D Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions Ltd
Hydrograph for Subcatchment 20S: DA-P2 PERVIOUS
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.001.250.000.000.00
4.001.250.000.000.00
6.001.250.000.000.00
8.001.250.000.000.00
10.001.250.000.000.00
12.001.250.000.000.00
14.001.250.000.000.00
16.001.250.000.000.00
18.001.250.000.000.00
20.001.250.000.000.00
22.001.250.000.000.00
24.001.250.000.000.00
26.001.250.000.000.00
28.001.250.000.000.00
30.001.250.000.000.00
32.001.250.000.000.00
34.001.250.000.000.00
36.001.250.000.000.00
38.001.250.000.000.00
40.001.250.000.000.00
42.001.250.000.000.00
44.001.250.000.000.00
46.001.250.000.000.00
48.001.250.000.000.00
50.001.250.000.000.00
52.001.250.000.000.00
54.001.250.000.000.00
56.001.250.000.000.00
58.001.250.000.000.00
60.001.250.000.000.00
62.001.250.000.000.00
64.001.250.000.000.00
66.001.250.000.000.00
68.001.250.000.000.00
70.001.250.000.000.00
72.001.250.000.000.00
Page 14
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NJ DEP 2-hr NJDEP WQ Rainfall=1.25" Printed 12/19/2025 tions LLC Page 15
Analysis - Proposed Conditions NJ DE Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 22S: DA-P2 IMPERVIOUS
Runoff = 0.59 cfs @ 1.08 hrs, Volume= Routed to Pond 12P : PERVIOUS PAVEMENT 2B
714 cf, Depth= 1.03"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NJ DEP 2-hr NJDEP WQ Rainfall=1.25"
Area (ac) CN Description
0.190 98 Paved roads w/curbs & sewers, HSG A
0.190 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)
0.9 151 0.0200 2.87 Shallow Concentrated Flow, Paved Kv= 20.3 fps
Subcatchment 22S: DA-P2 IMPERVIOUS
Subcatchment 22S: DA-P2 IMPERVIOUS
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NJ DEP 2-hr NJDEP WQ Rainfall=1.25" Printed 12/19/2025
Analysis - Proposed Conditions NJ D Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions Ltd
Page 16
Hydrograph for Subcatchment 22S: DA-P2 IMPERVIOUS
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.001.250.001.030.02
4.001.250.001.030.00
6.001.250.001.030.00
8.001.250.001.030.00
10.001.250.001.030.00
12.001.250.001.030.00
14.001.250.001.030.00
16.001.250.001.030.00
18.001.250.001.030.00
20.001.250.001.030.00
22.001.250.001.030.00
24.001.250.001.030.00
26.001.250.001.030.00
28.001.250.001.030.00
30.001.250.001.030.00
32.001.250.001.030.00
34.001.250.001.030.00
36.001.250.001.030.00
38.001.250.001.030.00
40.001.250.001.030.00
42.001.250.001.030.00
44.001.250.001.030.00
46.001.250.001.030.00
48.001.250.001.030.00
50.001.250.001.030.00
52.001.250.001.030.00
54.001.250.001.030.00
56.001.250.001.030.00
58.001.250.001.030.00
60.001.250.001.030.00
62.001.250.001.030.00
64.001.250.001.030.00
66.001.250.001.030.00
68.001.250.001.030.00
70.001.250.001.030.00
72.001.250.001.030.00
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Analysis - Proposed Conditions NJ DEP 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 23S: DA-P3 PERVIOUS
Runoff = 0.00 cfs @ 0.00 hrs, Volume= Routed to Pond 13P : BIORENTION BASIN 3A
0 cf, Depth = 0.00"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NJ DEP 2-hr NJDEP WQ Rainfall=1.25"
Area (ac) CN Description
0.680 39 >75% Grass cover, Good, HSG A
0.680 39 100.00% Pervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
9.0 83 0.0400 0.15 Sheet Flow, Grass: Dense n= 0.240 P2= 3.42" Using McCuen-Spiess flow length
0.2 10 0.0240 1.08 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps
2.2 270 2.00 Direct Entry, Pioe Flow
11.5 363 Total
Subcatchment 23S: DA-P3 PERVOUS
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NJ DEP 2-hr NJDEP WQ Rainfall=1.25" Printed 12/19/2025
Analysis - Proposed Conditions NJ D Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions Ltd
Hydrograph for Subcatchment 23S: DA-P3 PERVIOUS
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.001.250.000.000.00
4.001.250.000.000.00
6.001.250.000.000.00
8.001.250.000.000.00
10.001.250.000.000.00
12.001.250.000.000.00
14.001.250.000.000.00
16.001.250.000.000.00
18.001.250.000.000.00
20.001.250.000.000.00
22.001.250.000.000.00
24.001.250.000.000.00
26.001.250.000.000.00
28.001.250.000.000.00
30.001.250.000.000.00
32.001.250.000.000.00
34.001.250.000.000.00
36.001.250.000.000.00
38.001.250.000.000.00
40.001.250.000.000.00
42.001.250.000.000.00
44.001.250.000.000.00
46.001.250.000.000.00
48.001.250.000.000.00
50.001.250.000.000.00
52.001.250.000.000.00
54.001.250.000.000.00
56.001.250.000.000.00
58.001.250.000.000.00
60.001.250.000.000.00
62.001.250.000.000.00
64.001.250.000.000.00
66.001.250.000.000.00
68.001.250.000.000.00
70.001.250.000.000.00
72.001.250.000.000.00
Page 18
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NJ DEP 2-hr NJDEP WQ Rainfall=1.25" Printed 12/19/2025 tions LLC Page 19
Analysis - Proposed Conditions NJ DEF Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 24S: DA-P3 IMPERVIOUS
Runoff = 0.53 cfs @ 1.10 hrs, Volume= Routed to Pond 14P : PERVIOUS PAVEMENT 3B 751 cf, Depth= 1.03"
751 cf, Depth= 1.03"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NJ DEP 2-hr NJDEP WQ Rainfall=1.25"
Area (ac) CN Description
0.200 98 Paved parking, HSG A
0.200 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
3.6 37 0.0300 0.17 Sheet Flow,
0.7 118 0.0200 2.87 Grass: Short n= 0.150 P2= 3.42"
Shallow Concentrated Flow,
Paved Kv= 20.3 fps
4.3 155 Total
Subcatchment 24S: DA-P3 IMPERVIOUS
Subcatchment 24S: DA-P3 IMPERVIOUS
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Analysis - Proposed Conditions NJ D Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions Ltd
Page 20
Hydrograph for Subcatchment 24S: DA-P3 IMPERVIOUS
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.001.250.001.030.02
4.001.250.001.030.00
6.001.250.001.030.00
8.001.250.001.030.00
10.001.250.001.030.00
12.001.250.001.030.00
14.001.250.001.030.00
16.001.250.001.030.00
18.001.250.001.030.00
20.001.250.001.030.00
22.001.250.001.030.00
24.001.250.001.030.00
26.001.250.001.030.00
28.001.250.001.030.00
30.001.250.001.030.00
32.001.250.001.030.00
34.001.250.001.030.00
36.001.250.001.030.00
38.001.250.001.030.00
40.001.250.001.030.00
42.001.250.001.030.00
44.001.250.001.030.00
46.001.250.001.030.00
48.001.250.001.030.00
50.001.250.001.030.00
52.001.250.001.030.00
54.001.250.001.030.00
56.001.250.001.030.00
58.001.250.001.030.00
60.001.250.001.030.00
62.001.250.001.030.00
64.001.250.001.030.00
66.001.250.001.030.00
68.001.250.001.030.00
70.001.250.001.030.00
72.001.250.001.030.00
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NJ DEP 2-hr NJDEP WQ Rainfall=1.25" Printed 12/19/2025 tions LLC Page 21
Analysis - Proposed Conditions NJ DEF Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 12P: PERVIOUS PAVEMENT 2B
Inflow Area = 8,276 sf,100.00% Impervious, Inflow Depth = 1.03" for NJDEP WQ event
Inflow = 0.59 cfs @ 1.08 hrs, Volume= 714 cf
Outflow = 0.09 cfs @ 1.28 hrs, Volume= 711 cf, Atten= 85%, Lag= 12.2 min
Primary = 0.09 cfs @ 1.28 hrs, Volume= 711 cf
Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs
Peak Elev= 94.20' @ 1.28 hrs Surf.Area= 3,075 sf Storage= 487 cf
Plug-Flow detention time= 123.6 min calculated for 711 cf (100% of inflow)
Center-of-Mass det. time= 123.3 min ( 189.4 - 66.1 )
VolumeInvertAvail.StorageStorage Description
#193.80'615 cfStone Storage Bed (Prismatic)Listed below (Recalc)1,538 cf Overall ร— 40.0% Voids
#294.30'231 cfSurface and Base Course (Prismatic)Listed below (Recalc)1,538 cf Overall ร— 15.0% Voids
#394.80'1,538 cfSurface (Prismatic)Listed below (Recalc)
2,383 cfTotal Available Storage
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
93.803,07500
94.303,0751,5381,538
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
94.303,07500
94.803,0751,5381,538
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
94.803,07500
95.303,0751,5381,538
DeviceRoutingInvertOutlet Devices
#1Device 393.80'2.5" Vert. Orifice C = 0.600
#2Device 394.80'48.0" x 48.0" Horiz. Grate C = 0.600
#3Primary92.08'12.0" Round Culvert L = 38.0' RCP, groove end projecting, Ke = 0.200Inlet / Outlet Invert= $ 92.08'/91.65' $ S = 0.0113'/' Cc = 0.900n=0.011, Flow Area=0.79 sf
Primary OutFlow Max=0.09 cfs @ 1.28 hrs HW=94.20' (Free Discharge) 3=Culvert (Passes 0.09 cfs of 5.47 cfs potential flow) 1=Orifice (Orifice Controls 0.09 cfs @ 2.60 fps) 2=Grate (Controls 0.00 cfs)
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Analysis - Proposed Conditions NJ DEP 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 12P: PERVIOUS PAVEMENT 2B
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Analysis - Proposed Conditions NJ DEP 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 12P: PERVIOUS PAVEMENT 2B
Pond 12P: PERVIOUS PAVEMENT 2B
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Analysis - Proposed Conditions NJ D Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions Ltd
Hydrograph for Pond 12P: PERVIOUS PAVEMENT 2B
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Primary (cfs)
0.000.00093.800.00
2.000.0239994.120.08
4.000.0010993.890.01
6.000.005593.850.00
8.000.003793.830.00
10.000.002793.820.00
12.000.002293.820.00
14.000.001893.810.00
16.000.001593.810.00
18.000.001393.810.00
20.000.001293.810.00
22.000.001193.810.00
24.000.001093.810.00
26.000.00993.810.00
28.000.00893.810.00
30.000.00793.810.00
32.000.00793.810.00
34.000.00793.810.00
36.000.00693.800.00
38.000.00693.800.00
40.000.00593.800.00
42.000.00593.800.00
44.000.00593.800.00
46.000.00593.800.00
48.000.00593.800.00
50.000.00493.800.00
52.000.00493.800.00
54.000.00493.800.00
56.000.00493.800.00
58.000.00493.800.00
60.000.00493.800.00
62.000.00393.800.00
64.000.00393.800.00
66.000.00393.800.00
68.000.00393.800.00
70.000.00393.800.00
72.000.00393.800.00
Page 24
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Analysis - Proposed Conditions NJ DEF Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Discharge for Pond 12P: PERVIOUS PAVEMENT 2B
Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)
93.800.0094.320.1194.840.58
93.810.0094.330.1194.850.74
93.820.0094.340.1194.860.93
93.830.0094.350.1194.871.13
93.840.0094.360.1194.881.35
93.850.0094.370.1194.891.58
93.860.0194.380.1194.901.82
93.870.0194.390.1194.912.07
93.880.0194.400.1294.922.34
93.890.0194.410.1294.932.62
93.900.0294.420.1294.942.91
93.910.0294.430.1294.953.21
93.920.0294.440.1294.963.52
93.930.0394.450.1294.973.84
93.940.0394.460.1294.984.17
93.950.0394.470.1294.994.50
93.960.0494.480.1295.004.85
93.970.0494.490.1395.015.21
93.980.0594.500.1395.025.57
93.990.0594.510.1395.035.95
94.000.0594.520.1395.046.33
94.010.0594.530.1395.056.72
94.020.0694.540.1395.066.83
94.030.0694.550.1395.076.84
94.040.0694.560.1395.086.86
94.050.0694.570.1395.096.87
94.060.0694.580.1395.106.88
94.070.0794.590.1495.116.90
94.080.0794.600.1495.126.91
94.090.0794.610.1495.136.93
94.100.0794.620.1495.146.94
94.110.0794.630.1495.156.95
94.120.0894.640.1495.166.97
94.130.0894.650.1495.176.98
94.140.0894.660.1495.186.99
94.150.0894.670.1495.197.01
94.160.0894.680.1495.207.02
94.170.0894.690.1595.217.04
94.180.0994.700.1595.227.05
94.190.0994.710.1595.237.06
94.200.0994.720.1595.247.08
94.210.0994.730.1595.257.09
94.220.0994.740.1595.267.10
94.230.0994.750.1595.277.12
94.240.1094.760.1595.287.13
94.250.1094.770.1595.297.15
94.260.1094.780.1595.307.16
94.270.1094.790.15
94.280.1094.800.16
94.290.1094.810.21
94.300.1094.820.31
94.310.1094.830.43
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EP WQ Rainfall=1.25" Printed 12/19/2025 Page 26
NJ DEP 2-hr NJDEP WQ Rainfall=1.25" Printed 12/19/2025
Analysis - Proposed Conditions NJ DEP Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Area-Storage for Pond 12P: PERVIOUS PAVEMENT 2B
Elevation (feet)Storage (cubic-feet)Elevation (feet)Storage (cubic-feet)Elevation (feet)Storage (cubic-feet)
93.80094.3262494.84969
93.811294.3362994.85999
93.822594.3463394.861,030
93.833794.3563894.871,061
93.844994.3664394.881,092
93.856194.3764794.891,122
93.867494.3865294.901,153
93.878694.3965794.911,184
93.889894.4066194.921,215
93.8911194.4166694.931,245
93.9012394.4267094.941,276
93.9113594.4367594.951,307
93.9214894.4468094.961,338
93.9316094.4568494.971,368
93.9417294.4668994.981,399
93.9518594.4769394.991,430
93.9619794.4869895.001,461
93.9720994.4970395.011,491
93.9822194.5070795.021,522
93.9923494.5171295.031,553
94.0024694.5271695.041,584
94.0125894.5372195.051,614
94.0227194.5472695.061,645
94.0328394.5573095.071,676
94.0429594.5673595.081,707
94.0530894.5774095.091,737
94.0632094.5874495.101,768
94.0733294.5974995.111,799
94.0834494.6075395.121,830
94.0935794.6175895.131,860
94.1036994.6276395.141,891
94.1138194.6376795.151,922
94.1239494.6477295.161,953
94.1340694.6577695.171,983
94.1441894.6678195.182,014
94.1543094.6778695.192,045
94.1644394.6879095.202,076
94.1745594.6979595.212,106
94.1846794.7080095.222,137
94.1948094.7180495.232,168
94.2049294.7280995.242,199
94.2150494.7381395.252,229
94.2251794.7481895.262,260
94.2352994.7582395.272,291
94.2454194.7682795.282,322
94.2555494.7783295.292,352
94.2656694.7883695.302,383
94.2757894.79841
94.2859094.80846
94.2960394.81876
94.3061594.82907
94.3162094.83938
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Analysis - Proposed Conditions NJ DEP 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 13P: BIORENTION BASIN 3A
Inflow Area = 29,621 sf, 0.00% Impervious, Inflow Depth = 0.00" for NJDEP WQ event Inflow = 0.00 cfs @ 0.00 hrs, Volume= 0 cf Outflow = 0.00 cfs @ 0.00 hrs, Volume= 0 cf, Atten= 0%, Lag= 0.0 min Primary = 0.00 cfs @ 0.00 hrs, Volume= 0 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 93.30' @ 0.00 hrs Surf.Area= 77 sf Storage= 0 cf Plug-Flow detention time=(not calculated: initial storage exceeds outflow) Center-of-Mass det. time=(not calculated: no inflow)
#1 93.30' 1,041 cf Custom Stage Data (Prismatic) Listed below (Recalc)
Elevation (feet) Surf. Area (sq-ft) Inc. Store (cubic-feet) Cum. Store (cubic-feet)
93.30 77 0 0
94.00 417 173 173
95.00 1,319 868 1,041
Device Routing Invert Outlet Devices
#1 Device 3 93.80' 2.5" Vert. Orifice C = 0.600 Limited to weir flow at low heads
#2 Device 3 94.50' 48.0" x 48.0" Horiz. Grate C = 0.600
#3 Primary 90.80' 12.0" Round Culvert\n L = 11.0' RCP, groove end projecting, Ke = 0.200\nInlet / Outlet Invert= 90.80' / 90.75' S = 0.0045 '/ Cc = 0.900\n n = 0.012 Concrete pipe, finished, Flow Area= 0.79 sf
Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=93.30' (Free Discharge)\n uparrow 3=Culvert (Passes 0.00 cfs of 6.42 cfs potential flow)\n uparrow 1=Orifice (Controls 0.00 cfs)\n2=Grate (Controls 0.00 cfs)
Pond 13P: BIORENTION BASIN 3A Grate Orifice
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Analysis - Proposed Conditions NJ DEP Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 13P: BIORENTION BASIN 3A
Pond 13P: BIORENTION BASIN 3A
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Analysis - Proposed Conditions NJ DEF Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 13P: BIORENTION BASIN 3A
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Page 30
Hydrograph for Pond 13P: BIORENTION BASIN 3A
Time (hours)Inflow (cfs)Elevation (feet)Primary (cfs)
0.000.0093.300.00
1.000.0093.300.00
2.000.0093.300.00
3.000.0093.300.00
4.000.0093.300.00
5.000.0093.300.00
6.000.0093.300.00
7.000.0093.300.00
8.000.0093.300.00
9.000.0093.300.00
10.000.0093.300.00
11.000.0093.300.00
12.000.0093.300.00
13.000.0093.300.00
14.000.0093.300.00
15.000.0093.300.00
16.000.0093.300.00
17.000.0093.300.00
18.000.0093.300.00
19.000.0093.300.00
20.000.0093.300.00
21.000.0093.300.00
22.000.0093.300.00
23.000.0093.300.00
24.000.0093.300.00
25.000.0093.300.00
26.000.0093.300.00
27.000.0093.300.00
28.000.0093.300.00
29.000.0093.300.00
30.000.0093.300.00
31.000.0093.300.00
32.000.0093.300.00
33.000.0093.300.00
34.000.0093.300.00
35.000.0093.300.00
36.000.0093.300.00
37.000.0093.300.00
38.000.0093.300.00
39.000.0093.300.00
40.000.0093.300.00
41.000.0093.300.00
42.000.0093.300.00
43.000.0093.300.00
44.000.0093.300.00
45.000.0093.300.00
46.000.0093.300.00
47.000.0093.300.00
48.000.0093.300.00
49.000.0093.300.00
50.000.0093.300.00
51.000.0093.300.00
Time (hours)Inflow (cfs)Elevation (feet)Primary (cfs)
52.000.0093.300.00
53.000.0093.300.00
54.000.0093.300.00
55.000.0093.300.00
56.000.0093.300.00
57.000.0093.300.00
58.000.0093.300.00
59.000.0093.300.00
60.000.0093.300.00
61.000.0093.300.00
62.000.0093.300.00
63.000.0093.300.00
64.000.0093.300.00
65.000.0093.300.00
66.000.0093.300.00
67.000.0093.300.00
68.000.0093.300.00
69.000.0093.300.00
70.000.0093.300.00
71.000.0093.300.00
72.000.0093.300.00
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NJ DEP 2-hr NJDEP WQ Rainfall=1.25" Printed 12/19/2025
Analysis - Proposed Conditions NJ DE Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
WQ Rainfall=1.25" Printed 12/19/2025 Page 31
Stage-Discharge for Pond 13P: BIORENTION BASIN 3A
Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)
93.300.0093.820.0094.340.11
93.310.0093.830.0094.350.11
93.320.0093.840.0094.360.11
93.330.0093.850.0094.370.11
93.340.0093.860.0194.380.11
93.350.0093.870.0194.390.11
93.360.0093.880.0194.400.12
93.370.0093.890.0194.410.12
93.380.0093.900.0294.420.12
93.390.0093.910.0294.430.12
93.400.0093.920.0294.440.12
93.410.0093.930.0394.450.12
93.420.0093.940.0394.460.12
93.430.0093.950.0394.470.12
93.440.0093.960.0494.480.12
93.450.0093.970.0494.490.13
93.460.0093.980.0594.500.13
93.470.0093.990.0594.510.18
93.480.0094.000.0594.520.28
93.490.0094.010.0594.530.40
93.500.0094.020.0694.540.55
93.510.0094.030.0694.550.72
93.520.0094.040.0694.560.90
93.530.0094.050.0694.571.10
93.540.0094.060.0694.581.32
93.550.0094.070.0794.591.55
93.560.0094.080.0794.601.79
93.570.0094.090.0794.612.05
93.580.0094.100.0794.622.31
93.590.0094.110.0794.632.59
93.600.0094.120.0894.642.88
93.610.0094.130.0894.653.18
93.620.0094.140.0894.663.49
93.630.0094.150.0894.673.81
93.640.0094.160.0894.684.14
93.650.0094.170.0894.694.48
93.660.0094.180.0994.704.83
93.670.0094.190.0994.715.18
93.680.0094.200.0994.725.55
93.690.0094.210.0994.735.92
93.700.0094.220.0994.746.30
93.710.0094.230.0994.756.69
93.720.0094.240.1094.767.09
93.730.0094.250.1094.777.49
93.740.0094.260.1094.787.91
93.750.0094.270.1094.798.33
93.760.0094.280.1094.808.75
93.770.0094.290.1094.818.86
93.780.0094.300.1094.828.87
93.790.0094.310.1094.838.88
93.800.0094.320.1194.848.89
93.810.0094.330.1194.858.91
Elevation (feet)Primary (cfs)
94.868.92
94.878.93
94.888.94
94.898.96
94.908.97
94.918.98
94.928.99
94.939.01
94.949.02
94.959.03
94.969.04
94.979.06
94.989.07
94.999.08
95.009.09
Page 1391 Download HTML
NJ DEP 2-hr NJDEP WQ Rainfall=1.25" Printed 12/19/2025
Analysis - Proposed Conditions NJ DEP Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
WQ Rainfall=1.25" Printed 12/19/2025 Page 32
Stage-Area-Storage for Pond 13P: BIORENTION BASIN 3A
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
93.3077094.34724367
93.3287294.36742381
93.3496394.38760396
93.36106594.40778412
93.38116894.42796428
93.401261094.44814444
93.421351394.46832460
93.441451694.48850477
93.461551994.50868494
93.481642294.52886512
93.501742594.54904530
93.521842994.56922548
93.541943294.58940566
93.562033694.60958585
93.582134194.62976605
93.602234594.64994625
93.622325094.661,012645
93.642425494.681,030665
93.662525994.701,048686
93.682626494.721,066707
93.702717094.741,084728
93.722817594.761,103750
93.742918194.781,121773
93.763008794.801,139795
93.783109394.821,157818
93.803209994.841,175841
93.8233010694.861,193865
93.8433911294.881,211889
93.8634911994.901,229914
93.8835912694.921,247938
93.9036813494.941,265963
93.9237814194.961,283989
93.9438814994.981,3011,015
93.9639815795.001,3191,041
93.98407165
94.00417173
94.02435181
94.04453190
94.06471200
94.08489209
94.10507219
94.12525229
94.14543240
94.16561251
94.18579263
94.20597274
94.22615286
94.24633299
94.26652312
94.28670325
94.30688339
94.32706353
Page 1392 Download HTML
NJ DEP 2-hr NJDEP WQ Rainfall=1.25" Printed 12/19/2025 tions LLC Page 33
Analysis - Proposed Conditions NJ DEP 2-hr Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 14P: PERVIOUS PAVEMENT 3B
Inflow Area =8,712 sf,100.00% Impervious, Inflow Depth = 1.03" for NJDEP WQ event
Inflow =0.53 cfs @ 1.10 hrs, Volume= 751 cf
Outflow =0.09 cfs @ 1.45 hrs, Volume= 748 cf, Atten= 83%, Lag= 20.5 min
Primary =0.09 cfs @ 1.45 hrs, Volume= 748 cf
Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs
Peak Elev= 94.22' @ 1.45 hrs Surf.Area= 2,963 sf Storage= 503 cf
Plug-Flow detention time= 116.9 min calculated for 748 cf (100% of inflow) Center-of-Mass det. time= 117.2 min (188.5 - 71.3)
VolumeInvertAvail.StorageStorage Description
#193.80'593 cfStone Storage Bed (Prismatic)Listed below (Recalc) 1,482 cf Overall ร— 40.0% Voids
#294.30'222 cfSurface and Base Course (Prismatic)Listed below (Recalc) 1,482 cf Overall ร— 15.0% Voids
#394.80'1,482 cfSurface (Prismatic)Listed below (Recalc)
2,296 cfTotal Available Storage
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
93.802,96300
94.302,9631,4821,482
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
94.302,96300
94.802,9631,4821,482
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
94.802,96300
95.302,9631,4821,482
DeviceRoutingInvertOutlet Devices
#1Device 393.80'2.5" Vert. Orifice C = 0.600
#2Device 394.80'48.0" x 48.0" Horiz. Grate C = 0.600
#3Primary92.00'12.0" Round Culvert L = 52.0' RCP, groove end projecting, Ke = 0.200Inlet / Outlet Invert= $ 92.00'/90.75' $ S = 0.0240'/ Cc = 0.900n= 0.011, Flow Area= 0.79 sf
Primary OutFlow Max=0.09 cfs @ 1.45 hrs HW=94.22' (Free Discharge) 3=Culvert (Passes 0.09 cfs of 6.21 cfs potential flow) 1=Orifice (Orifice Controls 0.09 cfs @ 2.72 fps) 2=Grate (Controls 0.00 cfs)
Page 1393 Download HTML
NJ DEP 2-hr NJDEP WQ Rainfall=1.25" Printed 12/19/2025 tions LLC Page 34
Analysis - Proposed Conditions NJ DE Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 14P: PERVIOUS PAVEMENT 3B
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NJ DEP 2-hr NJDEP WQ Rainfall=1.25" Printed 12/19/2025 tions LLC Page 35
Analysis - Proposed Conditions NJ DEP 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 14P: PERVIOUS PAVEMENT 3B
Pond 14P: PERVIOUS PAVEMENT 3B
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Analysis - Proposed Conditions NJ D Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions L
Hydrograph for Pond 14P: PERVIOUS PAVEMENT 3B
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Primary (cfs)
0.000.00093.800.00
2.000.0243594.170.08
4.000.0011293.890.02
6.000.005493.850.00
8.000.003593.830.00
10.000.002693.820.00
12.000.002093.820.00
14.000.001793.810.00
16.000.001493.810.00
18.000.001293.810.00
20.000.001193.810.00
22.000.001093.810.00
24.000.00993.810.00
26.000.00893.810.00
28.000.00893.810.00
30.000.00793.810.00
32.000.00693.810.00
34.000.00693.810.00
36.000.00693.800.00
38.000.00593.800.00
40.000.00593.800.00
42.000.00593.800.00
44.000.00593.800.00
46.000.00493.800.00
48.000.00493.800.00
50.000.00493.800.00
52.000.00493.800.00
54.000.00493.800.00
56.000.00493.800.00
58.000.00393.800.00
60.000.00393.800.00
62.000.00393.800.00
64.000.00393.800.00
66.000.00393.800.00
68.000.00393.800.00
70.000.00393.800.00
72.000.00393.800.00
Page 1396 Download HTML
NJ DEP 2-hr NJDEP WQ Rainfall=1.25" Printed 12/19/2025
Analysis - Proposed Conditions NJ DEF Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 37
Stage-Discharge for Pond 14P: PERVIOUS PAVEMENT 3B
Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)
93.800.0094.320.1194.840.58
93.810.0094.330.1194.850.74
93.820.0094.340.1194.860.93
93.830.0094.350.1194.871.13
93.840.0094.360.1194.881.35
93.850.0094.370.1194.891.58
93.860.0194.380.1194.901.82
93.870.0194.390.1194.912.07
93.880.0194.400.1294.922.34
93.890.0194.410.1294.932.62
93.900.0294.420.1294.942.91
93.910.0294.430.1294.953.21
93.920.0294.440.1294.963.52
93.930.0394.450.1294.973.84
93.940.0394.460.1294.984.17
93.950.0394.470.1294.994.50
93.960.0494.480.1295.004.85
93.970.0494.490.1395.015.21
93.980.0594.500.1395.025.57
93.990.0594.510.1395.035.95
94.000.0594.520.1395.046.33
94.010.0594.530.1395.056.72
94.020.0694.540.1395.067.11
94.030.0694.550.1395.077.46
94.040.0694.560.1395.087.47
94.050.0694.570.1395.097.48
94.060.0694.580.1395.107.50
94.070.0794.590.1495.117.51
94.080.0794.600.1495.127.52
94.090.0794.610.1495.137.53
94.100.0794.620.1495.147.54
94.110.0794.630.1495.157.55
94.120.0894.640.1495.167.56
94.130.0894.650.1495.177.57
94.140.0894.660.1495.187.58
94.150.0894.670.1495.197.60
94.160.0894.680.1495.207.61
94.170.0894.690.1595.217.62
94.180.0994.700.1595.227.63
94.190.0994.710.1595.237.64
94.200.0994.720.1595.247.65
94.210.0994.730.1595.257.66
94.220.0994.740.1595.267.67
94.230.0994.750.1595.277.68
94.240.1094.760.1595.287.69
94.250.1094.770.1595.297.70
94.260.1094.780.1595.307.72
94.270.1094.790.15
94.280.1094.800.16
94.290.1094.810.21
94.300.1094.820.31
94.310.1094.830.43
Page 1397 Download HTML
EP WQ Rainfall=1.25" Printed 12/19/2025 Page 38
NJ DEP 2-hr NJDEP WQ Rainfall=1.25" Printed 12/19/2025
Analysis - Proposed Conditions NJ DEP Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Area-Storage for Pond 14P: PERVIOUS PAVEMENT 3B
Elevation (feet)Storage (cubic-feet)Elevation (feet)Storage (cubic-feet)Elevation (feet)Storage (cubic-feet)
93.80094.3260194.84933
93.811294.3360694.85963
93.822494.3461094.86993
93.833694.3561594.871,022
93.844794.3661994.881,052
93.855994.3762494.891,081
93.867194.3862894.901,111
93.878394.3963394.911,141
93.889594.4063794.921,170
93.8910794.4164194.931,200
93.9011994.4264694.941,230
93.9113094.4365094.951,259
93.9214294.4465594.961,289
93.9315494.4565994.971,319
93.9416694.4666494.981,348
93.9517894.4766894.991,378
93.9619094.4867395.001,407
93.9720194.4967795.011,437
93.9821394.5068195.021,467
93.9922594.5168695.031,496
94.0023794.5269095.041,526
94.0124994.5369595.051,556
94.0226194.5469995.061,585
94.0327394.5570495.071,615
94.0428494.5670895.081,644
94.0529694.5771395.091,674
94.0630894.5871795.101,704
94.0732094.5972195.111,733
94.0833294.6072695.121,763
94.0934494.6173095.131,793
94.1035694.6273595.141,822
94.1136794.6373995.151,852
94.1237994.6474495.161,882
94.1339194.6574895.171,911
94.1440394.6675395.181,941
94.1541594.6775795.191,970
94.1642794.6876195.202,000
94.1743994.6976695.212,030
94.1845094.7077095.222,059
94.1946294.7177595.232,089
94.2047494.7277995.242,119
94.2148694.7378495.252,148
94.2249894.7478895.262,178
94.2351094.7579395.272,207
94.2452194.7679795.282,237
94.2553394.7780195.292,267
94.2654594.7880695.302,296
94.2755794.79810
94.2856994.80815
94.2958194.81844
94.3059394.82874
94.3159794.83904
Page 1398 Download HTML
NJ DEP 2-hr NJDEP WQ Rainfall=1.25" Printed 12/19/2025 ions LLC Page 39
Analysis - Proposed Conditions NJ DE Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Summary for Pond 36P: BIORETENTION BASIN 1A
Inflow Area = 70,567 sf, 24.69% Impervious, Inflow Depth = 0.26" for NJDEP WQ event
Inflow = 1.19 cfs @ 1.09 hrs, Volume= 1,502 cf
Outflow = 0.00 cfs @ 2.07 hrs, Volume= 1 cf, Atten= 100%, Lag= 58.9 min
Primary = 0.00 cfs @ 2.07 hrs, Volume= 1 cf
Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs
Peak Elev= 91.00' @ 2.27 hrs Surf.Area= 1,500 sf Storage= 1,502 cf
Plug-Flow detention time= 1,912.8 min calculated for 1 cf (0% of inflow)
Center-of-Mass det. time= 1,866.1 min ( 1,934.7 - 68.6 )
Volume Invert Avail.Storage Storage Description
#1 90.00' 8,250 cf Custom Stage Data (Prismatic) Listed below (Recalc)
Elevation Surf.Area (feet) (sq-ft) Inc.Store (cubic-feet) Cum.Store (cubic-feet)
90.00 1,500 0 0
95.50 1,500 8,250 8,250
Device Routing Invert Outlet Devices
#1 Device 3 91.00' 2.5" Vert. Orifice C= 0.600 Limited to weir flow at low heads
#2 Device 3 95.00' 48.0" x 48.0" Horiz. Grate C= 0.600
#3 Primary 87.48' 12.0" Round Culvert L= 27.0' RCP, groove end projecting, Ke= 0.200
Inlet / Outlet Invert= 87.48' / 87.00' S= 0.0178 ' / Cc= 0.900
n= 0.012 Concrete pipe, finished, Flow Area= 0.79 sf
Primary OutFlow Max=0.00 cfs @ 2.07 hrs HW=91.00' (Free Discharge)
3=Culvert (Passes 0.00 cfs of 7.87 cfs potential flow)
1=Orifice (Orifice Controls 0.00 cfs @ 0.03 fps)
2=Grate ( Controls 0.00 cfs)
Page 1399 Download HTML
NJ DEP 2-hr NJDEP WQ Rainfall=1.25" Printed 12/19/2025 tions LLC Page 40
Analysis - Proposed Conditions NJ DEP Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 36P: BIORETENTION BASIN 1A
Pond 36P: BIORETENTION BASIN 1A
Page 1400 Download HTML
Analysis - Proposed Conditions NJ DEP 2 Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
NJ DEP 2-hr NJDEP WQ Rainfall=1.25" Printed 12/19/2025
Page 41
Pond 36P: BIORETENTION BASIN 1A
Stage-Area-Storage
Page 1401 Download HTML
NJ DEP 2-hr NJDEP WQ Rainfall=1.25" Printed 12/19/2025
Analysis - Proposed Conditions NJ D Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions L
Hydrograph for Pond 36P: BIORETENTION BASIN 1A
Time (hours)Inflow (cfs)Storage (cubic-feet)Elevation (feet)Primary (cfs)
0.000.00090.000.00
2.000.041,49391.000.00
4.000.001,50291.000.00
6.000.001,50291.000.00
8.000.001,50291.000.00
10.000.001,50291.000.00
12.000.001,50291.000.00
14.000.001,50291.000.00
16.000.001,50291.000.00
18.000.001,50291.000.00
20.000.001,50291.000.00
22.000.001,50291.000.00
24.000.001,50291.000.00
26.000.001,50291.000.00
28.000.001,50291.000.00
30.000.001,50291.000.00
32.000.001,50291.000.00
34.000.001,50291.000.00
36.000.001,50291.000.00
38.000.001,50291.000.00
40.000.001,50291.000.00
42.000.001,50291.000.00
44.000.001,50291.000.00
46.000.001,50291.000.00
48.000.001,50291.000.00
50.000.001,50291.000.00
52.000.001,50291.000.00
54.000.001,50291.000.00
56.000.001,50291.000.00
58.000.001,50291.000.00
60.000.001,50291.000.00
62.000.001,50291.000.00
64.000.001,50191.000.00
66.000.001,50191.000.00
68.000.001,50191.000.00
70.000.001,50191.000.00
72.000.001,50191.000.00
Page 42
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NJ DEP 2-hr NJDEP WQ Rainfall=1.25" Printed 12/19/2025
Analysis - Proposed Conditions NJ DEP Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 43
Stage-Discharge for Pond 36P: BIORETENTION BASIN 1A
Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)
90.000.0092.600.20
90.050.0092.650.20
90.100.0092.700.21
90.150.0092.750.21
90.200.0092.800.21
90.250.0092.850.22
90.300.0092.900.22
90.350.0092.950.22
90.400.0093.000.23
90.450.0093.050.23
90.500.0093.100.23
90.550.0093.150.23
90.600.0093.200.24
90.650.0093.250.24
90.700.0093.300.24
90.750.0093.350.25
90.800.0093.400.25
90.850.0093.450.25
90.900.0093.500.25
90.950.0093.550.26
91.000.0093.600.26
91.050.0093.650.26
91.100.0293.700.26
91.150.0393.750.27
91.200.0593.800.27
91.250.0693.850.27
91.300.0793.900.27
91.350.0893.950.28
91.400.0994.000.28
91.450.1094.050.28
91.500.1094.100.28
91.550.1194.150.29
91.600.1294.200.29
91.650.1294.250.29
91.700.1394.300.29
91.750.1394.350.30
91.800.1494.400.30
91.850.1494.450.30
91.900.1594.500.30
91.950.1594.550.30
92.000.1694.600.31
92.050.1694.650.31
92.100.1694.700.31
92.150.1794.750.31
92.200.1794.800.32
92.250.1894.850.32
92.300.1894.900.32
92.350.1894.950.32
92.400.1995.000.32
92.450.1995.050.91
92.500.1995.101.98
92.550.2095.153.37
Elevation (feet)Primary (cfs)
95.205.01
95.256.87
95.308.93
95.3511.17
95.4012.37
95.4512.41
95.5012.45
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NJ DEP 2-hr NJDEP WQ Rainfall=1.25" Printed 12/19/2025
Analysis - Proposed Conditions NJ DEP Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 44
Stage-Area-Storage for Pond 36P: BIORETENTION BASIN 1A
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
90.001,5000
90.101,500150
90.201,500300
90.301,500450
90.401,500600
90.501,500750
90.601,500900
90.701,5001,050
90.801,5001,200
90.901,5001,350
91.001,5001,500
91.101,5001,650
91.201,5001,800
91.301,5001,950
91.401,5002,100
91.501,5002,250
91.601,5002,400
91.701,5002,550
91.801,5002,700
91.901,5002,850
92.001,5003,000
92.101,5003,150
92.201,5003,300
92.301,5003,450
92.401,5003,600
92.501,5003,750
92.601,5003,900
92.701,5004,050
92.801,5004,200
92.901,5004,350
93.001,5004,500
93.101,5004,650
93.201,5004,800
93.301,5004,950
93.401,5005,100
93.501,5005,250
93.601,5005,400
93.701,5005,550
93.801,5005,700
93.901,5005,850
94.001,5006,000
94.101,5006,150
94.201,5006,300
94.301,5006,450
94.401,5006,600
94.501,5006,750
94.601,5006,900
94.701,5007,050
94.801,5007,200
94.901,5007,350
95.001,5007,500
95.101,5007,650
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
95.201,5007,800
95.301,5007,950
95.401,5008,100
95.501,5008,250
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Analysis - Proposed Conditions NJ DEP 2-hr NJDEP WQ Rainfall=1.25" Prepared by Civil Core Consulting Printed 12/19/2025 HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 45
Summary for Pond 45P: BIORENTION BASIN 2A
Inflow Area =18,731 sf,0.00% Impervious, Inflow Depth = 0.00" for NJDEP WQ event
Inflow =0.00 cfs @0.00 hrs, Volume= 0 cf
Outflow =0.00 cfs @0.00 hrs, Volume= 0 cf, Atten= 0%, Lag= 0.0 min
Primary =0.00 cfs @0.00 hrs, Volume= 0 cf
Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 94.30' @ 0.00 hrs Surf.Area= 63 sf Storage= 0 cf
Plug-Flow detention time = (not calculated: initial storage exceeds outflow) Center-of-Mass det. time = (not calculated: no inflow)
VolumeInvertAvail.StorageStorage Description
#194.30'307 cfCustom Stage Data (Prismatic)Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
94.306300
95.001487474
96.00319234307
DeviceRoutingInvertOutlet Devices
#1Device 394.80'5.0" Vert. Orifice C = 0.600Limited to weir flow at low heads
#2Device 395.50'48.0" x 48.0" Horiz. Grate C = 0.600
#3Primary92.03'12.0" Round Culvert\n L = 30.0' RCP, groove end projecting, Ke = 0.200\nInlet / Outlet Invert= $ 92.03'/91.65' $ S = 0.0127'/' Cc = 0.900\n n = 0.012 Concrete pipe, finished, Flow Area= $ 0.79 $ sf
Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=94.30' (Free Discharge)\n uparrow3=Culvert (Passes 0.00 cfs of 5.72 cfs potential flow)\n uparrow1=Orifice ( Controls 0.00 cfs)\nโ€”2=Grate ( Controls 0.00 cfs)
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NJ DEP 2-hr NJDEP WQ Rainfall=1.25" Printed 12/19/2025 tions LLC Page 46
Analysis - Proposed Conditions NJ DEP Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 45P: BIORENTION BASIN 2A
Pond 45P: BIORENTION BASIN 2A
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NJ DEP 2-hr NJDEP WQ Rainfall=1.25" Printed 12/19/2025
โ€™ WQ Rainfall=1.25" Printed 12/19/2025 Page 47
Analysis - Proposed Conditions NJ DEP Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond 45P: BIORENTION BASIN 2A
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NJ DEP 2-hr NJDEP WQ Rainfall=1.25" Printed 12/19/2025
Analysis - Proposed Conditions NJ D Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions L
Page 48
Hydrograph for Pond 45P: BIORENTION BASIN 2A
Time (hours)Inflow (cfs)Elevation (feet)Primary (cfs)
0.000.0094.300.00
1.000.0094.300.00
2.000.0094.300.00
3.000.0094.300.00
4.000.0094.300.00
5.000.0094.300.00
6.000.0094.300.00
7.000.0094.300.00
8.000.0094.300.00
9.000.0094.300.00
10.000.0094.300.00
11.000.0094.300.00
12.000.0094.300.00
13.000.0094.300.00
14.000.0094.300.00
15.000.0094.300.00
16.000.0094.300.00
17.000.0094.300.00
18.000.0094.300.00
19.000.0094.300.00
20.000.0094.300.00
21.000.0094.300.00
22.000.0094.300.00
23.000.0094.300.00
24.000.0094.300.00
25.000.0094.300.00
26.000.0094.300.00
27.000.0094.300.00
28.000.0094.300.00
29.000.0094.300.00
30.000.0094.300.00
31.000.0094.300.00
32.000.0094.300.00
33.000.0094.300.00
34.000.0094.300.00
35.000.0094.300.00
36.000.0094.300.00
37.000.0094.300.00
38.000.0094.300.00
39.000.0094.300.00
40.000.0094.300.00
41.000.0094.300.00
42.000.0094.300.00
43.000.0094.300.00
44.000.0094.300.00
45.000.0094.300.00
46.000.0094.300.00
47.000.0094.300.00
48.000.0094.300.00
49.000.0094.300.00
50.000.0094.300.00
51.000.0094.300.00
Time (hours)Inflow (cfs)Elevation (feet)Primary (cfs)
52.000.0094.300.00
53.000.0094.300.00
54.000.0094.300.00
55.000.0094.300.00
56.000.0094.300.00
57.000.0094.300.00
58.000.0094.300.00
59.000.0094.300.00
60.000.0094.300.00
61.000.0094.300.00
62.000.0094.300.00
63.000.0094.300.00
64.000.0094.300.00
65.000.0094.300.00
66.000.0094.300.00
67.000.0094.300.00
68.000.0094.300.00
69.000.0094.300.00
70.000.0094.300.00
71.000.0094.300.00
72.000.0094.300.00
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NJ DEP 2-hr NJDEP WQ Rainfall=1.25" Printed 12/19/2025
P WQ Rainfall=1.25" Printed 12/19/2025 Page 49
Analysis - Proposed Conditions NJ DE Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LL
Stage-Discharge for Pond 45P: BIORENTION BASIN 2A
Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)Elevation (feet)Primary (cfs)
94.300.0094.820.0095.340.38
94.310.0094.830.0095.350.38
94.320.0094.840.0095.360.39
94.330.0094.850.0195.370.39
94.340.0094.860.0195.380.40
94.350.0094.870.0195.390.41
94.360.0094.880.0295.400.41
94.370.0094.890.0295.410.42
94.380.0094.900.0395.420.42
94.390.0094.910.0395.430.43
94.400.0094.920.0495.440.43
94.410.0094.930.0495.450.44
94.420.0094.940.0595.460.44
94.430.0094.950.0695.470.45
94.440.0094.960.0795.480.45
94.450.0094.970.0795.490.46
94.460.0094.980.0895.500.46
94.470.0094.990.0995.510.52
94.480.0095.000.1095.520.62
94.490.0095.010.1195.530.75
94.500.0095.020.1295.540.90
94.510.0095.030.1395.551.07
94.520.0095.040.1495.561.26
94.530.0095.050.1595.571.46
94.540.0095.060.1695.581.68
94.550.0095.070.1795.591.91
94.560.0095.080.1895.602.16
94.570.0095.090.1995.612.42
94.580.0095.100.2095.622.69
94.590.0095.110.2195.632.97
94.600.0095.120.2295.643.26
94.610.0095.130.2395.653.57
94.620.0095.140.2495.663.88
94.630.0095.150.2595.674.20
94.640.0095.160.2695.684.53
94.650.0095.170.2795.694.88
94.660.0095.180.2795.705.23
94.670.0095.190.2895.715.58
94.680.0095.200.2995.725.95
94.690.0095.210.3095.736.33
94.700.0095.220.3095.746.71
94.710.0095.230.3195.757.11
94.720.0095.240.3295.767.51
94.730.0095.250.3295.777.87
94.740.0095.260.3395.787.88
94.750.0095.270.3495.797.89
94.760.0095.280.3495.807.90
94.770.0095.290.3595.817.92
94.780.0095.300.3595.827.93
94.790.0095.310.3695.837.94
94.800.0095.320.3795.847.95
94.810.0095.330.3795.857.97
Elevation (feet)Primary (cfs)
95.867.98
95.877.99
95.888.00
95.898.02
95.908.03
95.918.04
95.928.05
95.938.07
95.948.08
95.958.09
95.968.10
95.978.12
95.988.13
95.998.14
96.008.15
Page 1409 Download HTML
NJ DEP 2-hr NJDEP WQ Rainfall=1.25" Printed 12/19/2025
Analysis - Proposed Conditions NJ DEP Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 50
Stage-Area-Storage for Pond 45P: BIORENTION BASIN 2A
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
94.3063095.34206134
94.3265195.36210138
94.3468395.38213142
94.3670495.40216147
94.3873595.42220151
94.4075795.44223156
94.4278895.46227160
94.44801095.48230165
94.46821295.50234169
94.48851395.52237174
94.50871595.54240179
94.52901795.56244184
94.54921995.58247188
94.56952095.60251193
94.58972295.62254198
94.60992495.64257204
94.621022695.66261209
94.641042895.68264214
94.661073195.70268219
94.681093395.72271225
94.701123595.74275230
94.721143795.76278236
94.741163995.78281241
94.761194295.80285247
94.781214495.82288253
94.801244795.84292258
94.821264995.86295264
94.841295295.88298270
94.861315495.90302276
94.881335795.92305282
94.901366095.94309289
94.921386295.96312295
94.941416595.98316301
94.961436896.00319307
94.9814671
95.0014874
95.0215177
95.0415580
95.0615883
95.0816286
95.1016590
95.1216993
95.1417296
95.16175100
95.18179103
95.20182107
95.22186111
95.24189114
95.26192118
95.28196122
95.30199126
95.32203130
Page 1410 Download HTML
Analysis - Proposed ConditionsMulti-Event Tables
Prepared by Civil Core ConsultingPrinted 12/19/2025
HydroCAD\circledR 10.20-8a s/n 13637\circledC 2025 HydroCAD Software Solutions LLCPage 51
Events for Subcatchment 18S: DA-P1 PERVOUS
EventRainfall (inches)Runoff (cfs)Volume (cubic-feet)Depth (inches)
NJDEP WQ1.250.0000.00
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Analysis - Proposed ConditionsMulti-Event Tables
Prepared by Civil Core ConsultingPrinted 12/19/2025
HydroCAD\textregistered 10.20-8a s/n 13637\circledR 2025 HydroCAD Software Solutions LLCPage 52
Events for Subcatchment 19S: DA-P1 IMPERVIOUS
EventRainfall (inches)Runoff (cfs)Volume (cubic-feet)Depth (inches)
NJDEP WQ1.251.191,5021.03
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Analysis - Proposed ConditionsMulti-Event Tables
Prepared by Civil Core ConsultingPrinted 12/19/2025
HydroCAD\circledR 10.20-8a s/n 13637\circledC 2025 HydroCAD Software Solutions LLCPage 53
Events for Subcatchment 20S: DA-P2 PERVOUS
EventRainfall (inches)Runoff (cfs)Volume (cubic-feet)Depth (inches)
NJDEP WQ1.250.0000.00
Page 1413 Download HTML
Analysis - Proposed ConditionsMulti-Event Tables
Prepared by Civil Core ConsultingPrinted 12/19/2025
HydroCAD\circledR 10.20-8a s/n 13637\circledC 2025 HydroCAD Software Solutions LLCPage 54
Events for Subcatchment 22S: DA-P2 IMPERVIOUS
EventRainfall (inches)Runoff (cfs)Volume (cubic-feet)Depth (inches)
NJDEP WQ1.250.597141.03
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Analysis - Proposed ConditionsMulti-Event Tables
Prepared by Civil Core ConsultingPrinted 12/19/2025
HydroCAD\circledR 10.20-8a s/n 13637\circledC 2025 HydroCAD Software Solutions LLCPage 55
Events for Subcatchment 23S: DA-P3 PERVOUS
EventRainfall (inches)Runoff (cfs)Volume (cubic-feet)Depth (inches)
NJDEP WQ1.250.0000.00
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Analysis - Proposed ConditionsMulti-Event Tables
Prepared by Civil Core ConsultingPrinted 12/19/2025
HydroCAD\circledR 10.20-8a s/n 13637\circledC 2025 HydroCAD Software Solutions LLCPage 56
Events for Subcatchment 24S: DA-P3 IMPERVIOUS
EventRainfall (inches)Runoff (cfs)Volume (cubic-feet)Depth (inches)
NJDEP WQ1.250.537511.03
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Analysis - Proposed ConditionsMulti-Event Tables
Prepared by Civil Core ConsultingPrinted 12/19/2025
HydroCAD\circledR 10.20-8a s/n 13637\circledC 2025 HydroCAD Software Solutions LLCPage 57
Events for Pond 12P: PERVIOUS PAVEMENT 2B
Event Inflow (cfs) Primary (cfs) Elevation (feet) Storage (cubic-feet)
NJDEP WQ 0.59 0.09 94.20 487
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Analysis - Proposed ConditionsMulti-Event Tables
Prepared by Civil Core ConsultingPrinted 12/19/2025
HydroCAD\circledR 10.20-8a s/n 13637\circledC 2025 HydroCAD Software Solutions LLCPage 58
Events for Pond 13P: BIORENTION BASIN 3A
EventInflow (cfs)Primary (cfs)Elevation (feet)Storage (cubic-feet)
NJDEP WQ0.000.0093.300
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Analysis - Proposed ConditionsMulti-Event Tables
Prepared by Civil Core ConsultingPrinted 12/19/2025
HydroCAD\circledR 10.20-8a s/n 13637\circledC 2025 HydroCAD Software Solutions LLCPage 59
Events for Pond 14P: PERVIOUS PAVEMENT 3B
Event Inflow (cfs) Primary (cfs) Elevation (feet) Storage (cubic-feet)
NJDEP WQ 0.53 0.09 94.22 503
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Analysis - Proposed ConditionsMulti-Event Tables
Prepared by Civil Core ConsultingPrinted 12/19/2025
HydroCAD\textregistered 10.20-8a s/n 13637\circledR 2025 HydroCAD Software Solutions LLCPage 60
Events for Pond 36P: BIORETENTION BASIN 1A
Event Inflow (cfs) Primary (cfs) Elevation (feet) Storage (cubic-feet)
NJDEP WQ 1.19 0.00 91.00 1,502
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Analysis - Proposed ConditionsMulti-Event Tables
Prepared by Civil Core ConsultingPrinted 12/19/2025
HydroCAD\circledR 10.20-8a s/n 13637\circledC 2025 HydroCAD Software Solutions LLCPage 61
Events for Pond 45P: BIORENTION BASIN 2A
EventInflow (cfs)Primary (cfs)Elevation (feet)Storage (cubic-feet)
NJDEP WQ0.000.0094.300
Page 1421 Download HTML
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCADยฎ 10.20-8a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Table of Contents Printed 12/19/2025
TABLE OF CONTENTS
Project Reports
1 Routing Diagram
2 Project Notes
3 Rainfall Events Listing (selected events)
4 Area Listing (selected nodes)
5 Soil Listing (selected nodes)
6 Ground Covers (selected nodes)
7 Pipe Listing (selected nodes)
NJDEP WQ Event
8 Node Listing
9 Subcat 18S: DA-P1 PERVIOUS
11 Subcat 19S: DA-P1 IMPERVIOUS
13 Subcat 20S: DA-P2 PERVIOUS
15 Subcat 22S: DA-P2 IMPERVIOUS
19 Subcat 24S: DA-P3 IMPERVIOUS
21 Pond 12P: PERVIOUS PAVEMENT 2B
27 Pond 13P: BIORENTION BASIN 3A
33 Pond 14P: PERVIOUS PAVEMENT 3B
39 Pond 36P: BIORETENTION BASIN 1A
45 Pond 45P: BIORENTION BASIN 2A
Multi-Event Tables
51 Subcat 18S: DA-P1 PERVIOUS
52 Subcat 19S: DA-P1 IMPERVIOUS
53 Subcat 20S: DA-P2 PERVIOUS
54 Subcat 22S: DA-P2 IMPERVIOUS
55 Subcat 23S: DA-P3 PERVIOUS
56 Subcat 24S: DA-P3 IMPERVIOUS
57 Pond 12P: PERVIOUS PAVEMENT 2B
58 Pond 13P: BIORENTION BASIN 3A
59 Pond 14P: PERVIOUS PAVEMENT 3B
60 Pond 36P: BIORETENTION BASIN 1A
61 Pond 45P: BIORENTION BASIN 2A
Page 1422 Download HTML
Stormwater Management Report South Hope Chapel Rd. Subdivision Project #23184
Appendix F โ€“ County ROW Improvements
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Page 1424 Download HTML
Analysis - County Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Project Notes
Rainfall events imported from "240214_Analysis.hcp"
Printed 10/24/2025 Page 2
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Analysis - County
Prepared by Civil Core Consulting Printed 10/24/2025
HydroCAD\circledR 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 3
Rainfall Events Listing (selected events)
Event# Event Name Storm Type Curve Mode Duration (hours) B/B Depth (inches) AMC
1 2 YR-C NOAA 24-hr D Default 24.00 1 3.42 2
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Analysis - County Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Area Listing (all nodes)
Area (sq-ft)CNDescription (subcatchment-numbers)
2,61439>75% Grass cover, Good, HSG A (35S)
5,66398Paved parking, HSG A (35S)
8,27679TOTAL AREA
Printed 10/24/2025 Page 4
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Analysis - County Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Soil Listing (all nodes)
Area (sq-ft)Soil GroupSubcatchment Numbers
8,276HSG A35S
0HSG B
0HSG C
0HSG D
0Other
8,276TOTAL AREA
Printed 10/24/2025 Page 5
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Analysis - County
Prepared by Civil Core Consulting Printed 10/24/2025
HydroCAD\textregistered 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 6
Ground Covers (all nodes)
HSG-A (sq-ft)HSG-B (sq-ft)HSG-C (sq-ft)HSG-D (sq-ft)Other (sq-ft)Total (sq-ft)Ground Cover
2,61400002,614>75% Grass cover, Good
5,66300005,663Paved parking
8,27600008,276TOTAL AREA
Su Nu
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Analysis - County NOAA 24-hr D 2 YR-C Rainfall=3.42" Prepared by Civil Core Consulting Printed 10/24/2025 HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 7
Time span=0.00-72.00 hrs, dt=0.01 hrs, 7201 points Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method
Subcatchment 35S: COUNTY SYSTEM Runoff Area=0.190 ac 68.42% Impervious Runoff Depth=2.18" Flow Length=276' Slope=0.0100'/' Tc=2.3 min CN=39/98 Runoff=0.44 cfs 1,505 cf
Pond CB-1: County Basin-1
Peak Elev=88.91' Storage=0.009 af Inflow=0.44 cfs 1,505 cf Outflow=0.06 cfs 1,505 cf
Total Runoff Area = 8,276 sf Runoff Volume = 1,505 cf Average Runoff Depth = 2.18" 31.58% Pervious = 2,614 sf 68.42% Impervious = 5,663 sf
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Analysis - County NOAA 24-hr D 2 YR-C Rainfall=3.42" Prepared by Civil Core Consulting Printed 10/24/2025 HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 8
Summary for Subcatchment 35S: COUNTY SYSTEM
Runoff = 0.44 cfs @ 12.11 hrs, Volume= Routed to Pond CB-1 : County Basin-1 1,505 cf, Depth= 2.18"
1,505 cf, Depth= 2.18"
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2 YR-C Rainfall=3.42"
Area (ac) CN Description
0.130 98 Paved parking, HSG A
0.060 39 >75% Grass cover, Good, HSG A
0.190 79 Weighted Average
0.060 39 31.58% Pervious Area
0.130 98 68.42% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
2.3 276 0.0100 2.03
Paved Kv= 20.3 fps
Subcatchment 35S: COUNTY SYSTEM
Subcatchment 35S: COUNTY SYSTEM
Runoff
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Analysis - County NOAA 24-hr D 2 YR-C Rainfall=3.42" Prepared by Civil Core Consulting Printed 10/24/2025 HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 9
Hydrograph for Subcatchment 35S: COUNTY SYSTEM
Time (hours)Precip. (inches)Perv.Excess (inches)Imp.Excess (inches)Runoff (cfs)
0.000.000.000.000.00
2.000.080.000.010.00
4.000.180.000.060.00
6.000.290.000.140.01
8.000.440.000.270.01
10.000.680.000.480.02
12.001.640.001.420.26
14.002.740.002.510.02
16.002.980.002.740.01
18.003.130.002.900.01
20.003.240.003.010.01
22.003.340.003.100.01
24.003.420.013.190.01
26.003.420.013.190.00
28.003.420.013.190.00
30.003.420.013.190.00
32.003.420.013.190.00
34.003.420.013.190.00
36.003.420.013.190.00
38.003.420.013.190.00
40.003.420.013.190.00
42.003.420.013.190.00
44.003.420.013.190.00
46.003.420.013.190.00
48.003.420.013.190.00
50.003.420.013.190.00
52.003.420.013.190.00
54.003.420.013.190.00
56.003.420.013.190.00
58.003.420.013.190.00
60.003.420.013.190.00
62.003.420.013.190.00
64.003.420.013.190.00
66.003.420.013.190.00
68.003.420.013.190.00
70.003.420.013.190.00
72.003.420.013.190.00
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Analysis - County NOAA 24-hr D 2 YR-C Rainfall=3.42" Prepared by Civil Core Consulting Printed 10/24/2025 HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 10
Summary for Pond CB-1: County Basin-1
Inflow Area = 8,276 sf, 68.42% Impervious, Inflow Depth = 2.18" for 2 YR-C event Inflow = 0.44 cfs @ 12.11 hrs, Volume= 1,505 cf Outflow = 0.06 cfs @ 11.57 hrs, Volume= 1,505 cf, Atten= 87%, Lag= 0.0 min Discarded = 0.06 cfs @ 11.57 hrs, Volume= 1,505 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 88.91' @ 12.67 hrs Surf.Area= 0.006 ac Storage= 0.009 af Plug-Flow detention time= 37.2 min calculated for 1,505 cf (100% of inflow) Center-of-Mass det. time= 37.2 min (792.4 - 755.3)
VolumeInvertAvail.StorageStorage Description
#1A86.00'0.005 af4.00'W x 61.67'L x 3.00'H Field A
0.017 af Overall - 0.005 af Embedded = 0.012 af x 40.0% Voids
#2A86.33'0.004 afADS N-12 24" x 3 Inside #1
Inside = 23.8"W x 23.8"H => 3.10 sf x 20.00'L = 62.0 cf
Outside = 28.0"W x 28.0"H => 3.92 sf x 20.00'L = 78.4 cf
0.009 af Total Available Storage
Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Discarded86.00'10.000 in/hr Exfiltration over Surface area
Discarded OutFlowMax=0.06 cfs @ 11.57 hrsHW=86.03' (Free Discharge)
1=Exfiltration (Exfiltration Controls 0.06 cfs)
Pond CB-1: County Basin-1 Exfiltration
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Analysis - County NOAA 24-hr D 2 YR-C Rainfall=3.42" Prepared by Civil Core Consulting Printed 10/24/2025 HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 11
Pond CB-1: County Basin-1 - Chamber Wizard Field A
Chamber Model = ADS N-12 24" (ADS N-12ยฎ Pipe) Inside= 23.8"W x 23.8"H => 3.10 sf x 20.00'L = 62.0 cf Outside= 28.0"W x 28.0"H => 3.92 sf x 20.00'L = 78.4 cf 3 Chambers/Row x 20.00' Long = 60.00' Row Length +10.0" End Stone x 2 = 61.67' Base Length 1 Rows x 28.0" Wide + 10.0" Side Stone x 2 = 4.00' Base Width 4.0" Stone Base + 28.0" Chamber Height + 4.0" Stone Cover = 3.00' Field Height 3 Chambers x 62.0 cf = 186.0 cf Chamber Storage 3 Chambers x 78.4 cf = 235.2 cf Displacement 740.0 cf Field - 235.2 cf Chambers = 504.8 cf Stone x 40.0% Voids = 201.9 cf Stone Storage Chamber Storage + Stone Storage = 387.9 cf = 0.009 af Overall Storage Efficiency = 52.4% Overall System Size = 61.67' x 4.00' x 3.00' 3 Chambers 27.4 cy Field 18.7 cy Stone
Page 1434 Download HTML
4-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025 Page 12
Analysis - County Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Pond CB-1: County Basin-1
Pond CB-1: County Basin-1
Stage-Discharge
Page 1435 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025
Analysis - County NOAA Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Page 13
Pond CB-1: County Basin-1
Stage-Area-Storage
0 0.000 0.001 0.001 0.002 0.002 0.003 0.003 0.004 0.004 0.005 0.005 0.006 0.006 0.007 0.007 0.008 0.009 Storage (acre-feet)
Page 1436 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025
Analysis - County Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Hydrograph for Pond CB-1: County Basin-1
Time (hours)Inflow (cfs)Storage (acre-feet)Elevation (feet)Discarded (cfs)
0.000.000.00086.000.00
2.000.000.00086.000.00
4.000.000.00086.000.00
6.000.010.00086.000.01
8.000.010.00086.000.01
10.000.020.00086.000.02
12.000.260.00386.990.06
14.000.020.00687.950.06
16.000.010.00086.000.01
18.000.010.00086.000.01
20.000.010.00086.000.01
22.000.010.00086.000.01
24.000.010.00086.000.01
26.000.000.00086.000.00
28.000.000.00086.000.00
30.000.000.00086.000.00
32.000.000.00086.000.00
34.000.000.00086.000.00
36.000.000.00086.000.00
38.000.000.00086.000.00
40.000.000.00086.000.00
42.000.000.00086.000.00
44.000.000.00086.000.00
46.000.000.00086.000.00
48.000.000.00086.000.00
50.000.000.00086.000.00
52.000.000.00086.000.00
54.000.000.00086.000.00
56.000.000.00086.000.00
58.000.000.00086.000.00
60.000.000.00086.000.00
62.000.000.00086.000.00
64.000.000.00086.000.00
66.000.000.00086.000.00
68.000.000.00086.000.00
70.000.000.00086.000.00
72.000.000.00086.000.00
Page 14
Page 1437 Download HTML
Analysis - County NOAA 24-hr D 2 YR-C Rainfall=3.42" Prepared by Civil Core Consulting Printed 10/24/2025 HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC Page 15
Stage-Discharge for Pond CB-1: County Basin-1
Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
86.000.0087.040.0688.080.06
86.020.0687.060.0688.100.06
86.040.0687.080.0688.120.06
86.060.0687.100.0688.140.06
86.080.0687.120.0688.160.06
86.100.0687.140.0688.180.06
86.120.0687.160.0688.200.06
86.140.0687.180.0688.220.06
86.160.0687.200.0688.240.06
86.180.0687.220.0688.260.06
86.200.0687.240.0688.280.06
86.220.0687.260.0688.300.06
86.240.0687.280.0688.320.06
86.260.0687.300.0688.340.06
86.280.0687.320.0688.360.06
86.300.0687.340.0688.380.06
86.320.0687.360.0688.400.06
86.340.0687.380.0688.420.06
86.360.0687.400.0688.440.06
86.380.0687.420.0688.460.06
86.400.0687.440.0688.480.06
86.420.0687.460.0688.500.06
86.440.0687.480.0688.520.06
86.460.0687.500.0688.540.06
86.480.0687.520.0688.560.06
86.500.0687.540.0688.580.06
86.520.0687.560.0688.600.06
86.540.0687.580.0688.620.06
86.560.0687.600.0688.640.06
86.580.0687.620.0688.660.06
86.600.0687.640.0688.680.06
86.620.0687.660.0688.700.06
86.640.0687.680.0688.720.06
86.660.0687.700.0688.740.06
86.680.0687.720.0688.760.06
86.700.0687.740.0688.780.06
86.720.0687.760.0688.800.06
86.740.0687.780.0688.820.06
86.760.0687.800.0688.840.06
86.780.0687.820.0688.860.06
86.800.0687.840.0688.880.06
86.820.0687.860.0688.900.06
86.840.0687.880.0688.920.06
86.860.0687.900.0688.940.06
86.880.0687.920.0688.960.06
86.900.0687.940.0688.980.06
86.920.0687.960.0689.000.06
86.940.0687.980.06
86.960.0688.000.06
86.980.0688.020.06
87.000.0688.040.06
87.020.0688.060.06
Page 1438 Download HTML
NOAA 24-hr D 2 YR-C Rainfall=3.42" Printed 10/24/2025
Analysis - County Prepared by Civil Core Consulting HydroCADยฎ 10.20-7a s/n 13637 ยฉ 2025 HydroCAD Software Solutions LLC
Stage-Area-Storage for Pond CB-1: County Basin-1
Elevation (feet)Surface (acres)Storage (acre-feet)
86.000.0060.000
86.050.0060.000
86.100.0060.000
86.150.0060.000
86.200.0060.000
86.250.0060.001
86.300.0060.001
86.350.0060.001
86.400.0060.001
86.450.0060.001
86.500.0060.001
86.550.0060.001
86.600.0060.001
86.650.0060.001
86.700.0060.002
86.750.0060.002
86.800.0060.002
86.850.0060.002
86.900.0060.002
86.950.0060.002
87.000.0060.003
87.050.0060.003
87.100.0060.003
87.150.0060.003
87.200.0060.003
87.250.0060.004
87.300.0060.004
87.350.0060.004
87.400.0060.004
87.450.0060.004
87.500.0060.004
87.550.0060.005
87.600.0060.005
87.650.0060.005
87.700.0060.005
87.750.0060.005
87.800.0060.006
87.850.0060.006
87.900.0060.006
87.950.0060.006
88.000.0060.006
88.050.0060.006
88.100.0060.007
88.150.0060.007
88.200.0060.007
88.250.0060.007
88.300.0060.007
88.350.0060.007
88.400.0060.008
88.450.0060.008
88.500.0060.008
88.550.0060.008
Elevation (feet)Surface (acres)Storage (acre-feet)
88.600.0060.008
88.650.0060.008
88.700.0060.008
88.750.0060.008
88.800.0060.008
88.850.0060.009
88.900.0060.009
88.950.0060.009
89.000.0060.009
Page 16
Page 1439 Download HTML
Analysis - CountyMulti-Event Tables
Prepared by Civil Core ConsultingPrinted 10/24/2025
HydroCAD\textregistered 10.20-7a s/n 13637\circledR 2025 HydroCAD Software Solutions LLCPage 1st
Page 17
Events for Subcatchment 35S: COUNTY SYSTEM
EventRainfall (inches)Runoff (cfs)Volume (cubic-feet)Depth (inches)
2 YR-C3.420.441,5052.18
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Analysis - CountyMulti-Event Tables
Prepared by Civil Core ConsultingPrinted 10/24/2025
HydroCAD\circledR 10.20-7a s/n 13637\circledC 2025 HydroCAD Software Solutions LLCPage 18
Events for Pond CB-1: County Basin-1
Event Inflow (cfs) Discarded (cfs) Elevation (feet) Storage (acre-feet)
2 YR-C 0.44 0.06 88.91 0.009
Page 1441 Download HTML
Stormwater Management Report South Hope Chapel Rd. Subdivision Project #23184
Appendix G โ€“ Groundwater Mounding Analysis
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Groundwater Mounding-Duration of Infiltration Period
BasinSubsurface Infiltration Basin 1
Volume (cf)29874
Infiltration Area (sf)2475
Recharge Rate (in/hr)10
Duration of infiltration period, t (hr) = (Volume of runoff to be infiltrated (cf) ร— 12 in/ft)/(Infiltration area (sf) ร— Recharge rate (in/hr))ft
Duration of Infiltration Period14.48
Groundwater Mounding-Duration of Infiltration Period
BasinInfiltration Basin 2
Volume (cf)9837
Infiltration Area (sf)520
Recharge Rate (in/hr)4.95
Duration of infiltration period, t (hr) = (Volume of runoff to be infiltrated (cf) ร— 12 in/ft)/(Infiltration area (sf) ร— Recharge rate (in/hr))
Duration of Infiltration Period45.86
BasinInfiltration Basin 3
Volume (cf)12583
Infiltration Area (sf)1150
Recharge Rate (in/hr)10
Duration of infiltration period, t (hr) = (Volume of runoff to be infiltrated (cf) ร— 12 in/ft)/(Infiltration area (sf) ร— Recharge rate (in/hr))
Duration of Infiltration Period
13.13
Page 1443 Download HTML
BasinSubsurface Infiltration Basin Lot 1
Volume (cf)1722
Infiltration Area (sf)566.28
Recharge Rate (in/hr)2.45
Duration of infiltration period, t (hr) =Volume of runoff to be infiltrated (cf) x 12 in/ft Infiltration area (sf) x Recharge rate (in/hr)
Duration of Infiltration Period14.89
BasinSubsurface Infiltration Basin Lot 2
Volume (cf)1722
Infiltration Area (sf)392.04
Recharge Rate (in/hr)7.85
Duration of infiltration period, t (hr) =Volume of runoff to be infiltrated (cf) x 12 in/ft Infiltration area (sf) x Recharge rate (in/hr)
Duration of Infiltration Period6.71
BasinSubsurface Infiltration Basin Lot 9
Volume (cf)1722
Infiltration Area (sf)348.48
Recharge Rate (in/hr)8
Image
The quick brown fox jumps over the lazy dog.
Duration of Infiltration Period
7.41
Page 1444 Download HTML
BasinSubsurface Infiltration Basin Lot 10
Volume (cf)1722
Infiltration Area (sf)348.48
Recharge Rate (in/hr)10
Duration of infiltration period, t (hr) =Volume of runoff to be infiltrated (cf) x 12 in/ft Infiltration area (sf) x Recharge rate (in/hr)
Duration of Infiltration Period5.93
BasinSubsurface Infiltration Basin Lot 3
Volume (cf)1722
Infiltration Area (sf)479.16
Recharge Rate (in/hr)4.05
Duration of infiltration period, t (hr) =Volume of runoff to be infiltrated (cf) x 12 in/ft Infiltration area (sf) x Recharge rate (in/hr)
Duration of Infiltration Period10.65
BasinSubsurface Infiltration Basin Lot 4
Volume (cf)1722
Infiltration Area (sf)479.16
Recharge Rate (in/hr)4.05
Image
Duration of Infiltration Period
10.65
Page 1445 Download HTML
BasinSubsurface Infiltration Basin Lot 6
Volume (cf)1722
Infiltration Area (sf)348.48
Recharge Rate (in/hr)8.45
Duration of infiltration period, t (hr) =Volume of runoff to be infiltrated (cf) x 12 in/ft Infiltration area (sf) x Recharge rate (in/hr)
Duration of Infiltration P7.02
BasinSubsurface Infiltration Basin Lot 7
Volume (cf)1722
Infiltration Area (sf)348.48
Recharge Rate (in/hr)10
Duration of infiltration period, t (hr) =Volume of runoff to be infiltrated (cf) x 12 in/ft Infiltration area (sf) x Recharge rate (in/hr)
Duration of Infiltration P5.93
BasinSubsurface Infiltration Basin Lot 8
Volume (cf)1722
Infiltration Area (sf)348.48
Recharge Rate (in/hr)10
Image
Duration of Infiltration P
5.93
Page 1446 Download HTML
Disclaimer
This spreadsheet solving the Hantush (1967) equation for ground-water mounding beneath an infiltration basin is made available to the general public as a convenience for those wishing to replicate values documented in the USGS Scientific Investigations Report 2010-5102 "Groundwater Mounding beneath Hypothetical Stormwater Infiltration Basins" or to calculate values based on user-specified site conditions. Any changes made to the spreadsheet (other than values identified as user-specified) after transmission from the USGS could have unintended, undesirable consequences. These consequences could include, but may not be limited to: erroneous output, numerical instabilities, and violations of underlying assumptions that are inherent in results presented in the accompanying USGS published report. The USGS assumes no responsibility for the consequences of any changes made to the spreadsheet. If changes are made to the spreadsheet, the user is responsible for documenting the changes and justifying the results and conclusions.
Page 1447 Download HTML
Input Values
7.85 R Recharge rate (permeability rate) (in/hr)
Specific yield, Sy (dimensionless)
Horizontal hydraulic conductivity (in/hr)
39.25 Kh Kh = 5xRecharge Rate (R) in the costal plan; Kh=R outside the coastal plan
24.670 x 1/2 length of basin (x direction, in feet)
3.830 y 1/2 width of basin (y direction, in feet)
6.71 t Duration of infiltration period (hours)
34.00 hi(0) Initial thickness of saturated zone (feet)
0.150 Sy default value is 0.15; max value is 0.2 provided that a lab test data is submitted
h(max) Maximum thickness of saturated zone (beneath center of basin at end of infiltration period)
ฮ” h (max) Maximum groundwater mounding (beneath center of basin at end of infiltration period)
Ground-water Distance from center of basin in x
Mounding, in feet direction, in feet
0.820 0
0.792 10
0.694 20
0.512 30
0.393 40
0.312 50
0.252 60
0.205 70
0.168 80
0.137 90
Re-Calculate Now
0 10 20 30 40 50 60 70 80 90 100
Disclaimer
This spreadsheet solving the Hantush (1967) equation for ground-water mounding beneath an infiltration basin is made available to the general public as a convenience for those wishing to replicate values documented in the USGS Scientific Investigations Report 2010-5102 "Groundwater Mounding beneath Hypothetical Stormwater Infiltration Basins" or to calculate values based on user-specified site conditions. Any changes made to the spreadsheet (other than values identified as user-specified) after transmission from the USGS could have unintended, undesirable consequences. These consequences could include, but may not be limited to: erroneous output, numerical instabilities, and violations of underlying assumptions that are inherent in results presented in the accompanying USGS published report. The USGS assumes no responsibility for the consequences of any changes made to the spreadsheet. If changes are made to the spreadsheet, the user is responsible for documenting the changes and justifying the results and conclusions.
Page 1448 Download HTML
Input Values
10.00 R Recharge rate (permeability rate) (in/hr) Specific yield, Sy (dimensionless)
0.150 Sy default value is 0.15; max value is 0.2 provided that a lab test data is submitted Horizontal hydraulic conductivity (in/hr)
22.670 x 1/2 width of basin (y direction, in feet) 1/2 width of basin (y direction, in feet)
3.830 y Duration of infiltration period (hours) Initial thickness of saturated zone (feet)
5.93 t Maximum thickness of saturated zone (beneath center of basin at end of infiltration period) Maximum groundwater mounding (beneath center of basin at end of infiltration period)
34.00 hi(0) Maximum thickness of saturated zone (beneath center of basin at end of infiltration period) Maximum groundwater mounding (beneath center of basin at end of infiltration period)
h(max) Maximum thickness of saturated zone (beneath center of basin at end of infiltration period) Maximum groundwater mounding (beneath center of basin at end of infiltration period)
Ground-water Distance from center of basin in x Maximum thickness of saturated zone (beneath center of basin at end of infiltration period) Maximum groundwater mounding (beneath center of basin at end of infiltration period)
50.00 Kh Kh = 5xRecharge Rate (R) in the costal plan; Kh=R outside the coastal plan 1/2 length of basin (x direction, in feet)
Mounding, in feet direction, in feet Maximum thickness of saturated zone (beneath center of basin at end of infiltration period) Maximum groundwater mounding (beneath center of basin at end of infiltration period)
0.796 0 0.796
0.765 10 0.765
0.654 20 0.654
0.482 30 0.482
0.376 40 0.376
0.303 50 0.303
0.248 60 0.248
0.204 70 0.204
0.169 80 0.169
0.140 90 0.140
Re-Calculate Now
0 10 20 30
40 40 50 60
60 70 80 90
Disclaimer
This spreadsheet solving the Hantush (1967) equation for ground-water mounding beneath an infiltration basin is made available to the general public as a convenience for those wishing to replicate values documented in the USGS Scientific Investigations Report 2010-5102 "Groundwater Mounding beneath Hypothetical Stormwater Infiltration Basins" or to calculate values based on user-specified site conditions. Any changes made to the spreadsheet (other than values identified as user-specified) after transmission from the USGS could have unintended, undesirable consequences. These consequences could include, but may not be limited to: erroneous output, numerical instabilities, and violations of underlying assumptions that are inherent in results presented in the accompanying USGS published report. The USGS assumes no responsibility for the consequences of any changes made to the spreadsheet. If changes are made to the spreadsheet, the user is responsible for documenting the changes and justifying the results and conclusions.
Page 1449 Download HTML
Disclaimer
This spreadsheet solving the Hantush (1967) equation for ground-water mounding beneath an infiltration basin is made available to the general public as a convenience for those wishing to replicate values documented in the USGS Scientific Investigations Report 2010-5102 "Groundwater Mounding beneath Hypothetical Stormwater Infiltration Basins" or to calculate values based on user-specified site conditions. Any changes made to the spreadsheet (other than values identified as user-specified) after transmission from the USGS could have unintended, undesirable consequences. These consequences could include, but may not be limited to: erroneous output, numerical instabilities, and violations of underlying assumptions that are inherent in results presented in the accompanying USGS published report. The USGS assumes no responsibility for the consequences of any changes made to the spreadsheet. If changes are made to the spreadsheet, the user is responsible for documenting the changes and justifying the results and conclusions.
Page 1450 Download HTML
Disclaimer
This spreadsheet solving the Hantush (1967) equation for ground-water mounding beneath an infiltration basin is made available to the general public as a convenience for those wishing to replicate values documented in the USGS Scientific Investigations Report 2010-5102 "Groundwater Mounding beneath Hypothetical Stormwater Infiltration Basins" or to calculate values based on user-specified site conditions. Any changes made to the spreadsheet (other than values identified as user-specified) after transmission from the USGS could have unintended, undesirable consequences. These consequences could include, but may not be limited to: erroneous output, numerical instabilities, and violations of underlying assumptions that are inherent in results presented in the accompanying USGS published report. The USGS assumes no responsibility for the consequences of any changes made to the spreadsheet. If changes are made to the spreadsheet, the user is responsible for documenting the changes and justifying the results and conclusions.
Page 1451 Download HTML
Input Values
10.00 R Recharge rate (permeability rate) (in/hr) Specific yield, Sy (dimensionless)
0.150 Sy default value is 0.15; max value is 0.2 provided that a lab test data is submitted Horizontal hydraulic conductivity (in/hr)
22.670 x 1/2 width of basin (y direction, in feet) 1/2 width of basin (y direction, in feet)
3.830 y Duration of infiltration period (hours) Initial thickness of saturated zone (feet)
5.93 t Maximum thickness of saturated zone (beneath center of basin at end of infiltration period) Maximum groundwater mounding (beneath center of basin at end of infiltration period)
34.00 hi(0) Maximum thickness of saturated zone (beneath center of basin at end of infiltration period) Maximum groundwater mounding (beneath center of basin at end of infiltration period)
h(max) Maximum thickness of saturated zone (beneath center of basin at end of infiltration period) Maximum groundwater mounding (beneath center of basin at end of infiltration period)
Ground-water Distance from center of basin in x Maximum thickness of saturated zone (beneath center of basin at end of infiltration period) Maximum groundwater mounding (beneath center of basin at end of infiltration period)
50.00 Kh Kh = 5xRecharge Rate (R) in the costal plan; Kh=R outside the coastal plan 1/2 length of basin (x direction, in feet)
Mounding, in feet direction, in feet Maximum thickness of saturated zone (beneath center of basin at end of infiltration period) Maximum groundwater mounding (beneath center of basin at end of infiltration period)
0.796 0 0.796
0.765 10 0.765
0.654 20 0.654
0.482 30 0.482
0.376 40 0.376
0.303 50 0.303
0.248 60 0.248
0.204 70 0.204
0.169 80 0.169
0.140 90 0.140
Re-Calculate Now
0 10 20 30
40 40 50 60
60 70 80 90
Disclaimer
This spreadsheet solving the Hantush (1967) equation for ground-water mounding beneath an infiltration basin is made available to the general public as a convenience for those wishing to replicate values documented in the USGS Scientific Investigations Report 2010-5102 "Groundwater Mounding beneath Hypothetical Stormwater Infiltration Basins" or to calculate values based on user-specified site conditions. Any changes made to the spreadsheet (other than values identified as user-specified) after transmission from the USGS could have unintended, undesirable consequences. These consequences could include, but may not be limited to: erroneous output, numerical instabilities, and violations of underlying assumptions that are inherent in results presented in the accompanying USGS published report. The USGS assumes no responsibility for the consequences of any changes made to the spreadsheet. If changes are made to the spreadsheet, the user is responsible for documenting the changes and justifying the results and conclusions.
Page 1452 Download HTML
Input Values
10.00 R Recharge rate (permeability rate) (in/hr) Specific yield, Sy (dimensionless)
0.150 Sy default value is 0.15; max value is 0.2 provided that a lab test data is submitted Horizontal hydraulic conductivity (in/hr)
50.00 Kh Kh = 5xRecharge Rate (R) in the costal plan; Kh=R outside the coastal plan 1/2 length of basin (x direction, in feet)
22.670 x 1/2 width of basin (y direction, in feet) 1/2 width of basin (y direction, in feet)
3.830 y Duration of infiltration period (hours) Initial thickness of saturated zone (feet)
5.93 t Maximum thickness of saturated zone (beneath center of basin at end of infiltration period) Maximum groundwater mounding (beneath center of basin at end of infiltration period)
34.00 hi(0) Maximum thickness of saturated zone (beneath center of basin at end of infiltration period) Maximum groundwater mounding (beneath center of basin at end of infiltration period)
h(max) Maximum thickness of saturated zone (beneath center of basin at end of infiltration period) Maximum groundwater mounding (beneath center of basin at end of infiltration period)
Ground-water Distance from center of basin in x Maximum thickness of saturated zone (beneath center of basin at end of infiltration period) Maximum groundwater mounding (beneath center of basin at end of infiltration period)
Mounding, in feet direction, in feet Maximum thickness of saturated zone (beneath center of basin at end of infiltration period) Maximum groundwater mounding (beneath center of basin at end of infiltration period)
0.796 0 0.796
0.765 10 0.765
0.654 20 0.654
0.482 30 0.482
0.376 40 0.376
0.303 50 0.303
0.248 60 0.248
0.204 70 0.204
0.169 80 0.169
0.140 90 0.140
Disclaimer
This spreadsheet solving the Hantush (1967) equation for ground-water mounding beneath an infiltration basin is made available to the general public as a convenience for those wishing to replicate values documented in the USGS Scientific Investigations Report 2010-5102 "Groundwater Mounding beneath Hypothetical Stormwater Infiltration Basins" or to calculate values based on user-specified site conditions. Any changes made to the spreadsheet (other than values identified as user-specified) after transmission from the USGS could have unintended, undesirable consequences. These consequences could include, but may not be limited to: erroneous output, numerical instabilities, and violations of underlying assumptions that are inherent in results presented in the accompanying USGS published report. The USGS assumes no responsibility for the consequences of any changes made to the spreadsheet. If changes are made to the spreadsheet, the user is responsible for documenting the changes and justifying the results and conclusions.
Page 1453 Download HTML
Disclaimer
This spreadsheet solving the Hantush (1967) equation for ground-water mounding beneath an infiltration basin is made available to the general public as a convenience for those wishing to replicate values documented in the USGS Scientific Investigations Report 2010-5102 "Groundwater Mounding beneath Hypothetical Stormwater Infiltration Basins" or to calculate values based on user-specified site conditions. Any changes made to the spreadsheet (other than values identified as user-specified) after transmission from the USGS could have unintended, undesirable consequences. These consequences could include, but may not be limited to: erroneous output, numerical instabilities, and violations of underlying assumptions that are inherent in results presented in the accompanying USGS published report. The USGS assumes no responsibility for the consequences of any changes made to the spreadsheet. If changes are made to the spreadsheet, the user is responsible for documenting the changes and justifying the results and conclusions.
Page 1454 Download HTML
Input Values
10.00 R Recharge rate (permeability rate) (in/hr) Specific yield, Sy (dimensionless)
0.150 Sy default value is 0.15; max value is 0.2 provided that a lab test data is submitted Horizontal hydraulic conductivity (in/hr)
50.00 Kh Kh = 5xRecharge Rate (R) in the costal plan; Kh=R outside the coastal plan 1/2 length of basin (x direction, in feet)
22.670 x 1/2 width of basin (y direction, in feet) 1/2 width of basin (y direction, in feet)
3.830 y Duration of infiltration period (hours) Initial thickness of saturated zone (feet)
5.93 t Maximum thickness of saturated zone (beneath center of basin at end of infiltration period) Maximum groundwater mounding (beneath center of basin at end of infiltration period)
34.00 hi(0) Maximum thickness of saturated zone (beneath center of basin at end of infiltration period) Maximum groundwater mounding (beneath center of basin at end of infiltration period)
h(max)\n ฮ” h(max) Maximum thickness of saturated zone (beneath center of basin at end of infiltration period) Maximum groundwater mounding (beneath center of basin at end of infiltration period)
Ground-water Distance from center of basin in x Maximum thickness of saturated zone (beneath center of basin at end of infiltration period) Maximum groundwater mounding (beneath center of basin at end of infiltration period)
Mounding, in feet direction, in feet Maximum thickness of saturated zone (beneath center of basin at end of infiltration period) Maximum groundwater mounding (beneath center of basin at end of infiltration period)
0.796 0 0.796
0.765 10 0.765
0.654 20 0.654
0.482 30 0.482
0.376 40 0.376
0.303 50 0.303
0.248 60 0.248
0.204 70 0.204
0.169 80 0.169
0.140 90 0.140
Disclaimer
This spreadsheet solving the Hantush (1967) equation for ground-water mounding beneath an infiltration basin is made available to the general public as a convenience for those wishing to replicate values documented in the USGS Scientific Investigations Report 2010-5102 "Groundwater Mounding beneath Hypothetical Stormwater Infiltration Basins" or to calculate values based on user-specified site conditions. Any changes made to the spreadsheet (other than values identified as user-specified) after transmission from the USGS could have unintended, undesirable consequences. These consequences could include, but may not be limited to: erroneous output, numerical instabilities, and violations of underlying assumptions that are inherent in results presented in the accompanying USGS published report. The USGS assumes no responsibility for the consequences of any changes made to the spreadsheet. If changes are made to the spreadsheet, the user is responsible for documenting the changes and justifying the results and conclusions.
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Input Values
10.00 R
0.150 Sy
50.00 Kh
45.000 x
13.750 y
14.48 t
34.00 hi(0)
Disclaimer
This spreadsheet solving the Hantush (1967) equation for ground-water mounding beneath an infiltration basin is made available to the general public as a convenience for those wishing to replicate values documented in the USGS Scientific Investigations Report 2010-5102 "Groundwater mounding beneath hypothetical stormwater infiltration basins" or to calculate values based on user-specified site conditions. Any changes made to the spreadsheet (other than values identified as user-specified) after transmission from the USGS could have unintended, undesirable consequences. These consequences could include, but may not be limited to: erroneous output, numerical instabilities, and violations of underlying assumptions that are inherent in results presented in the accompanying USGS published report. The USGS assumes no responsibility for the consequences of any changes made to the spreadsheet. If changes are made to the spreadsheet, the user is responsible for documenting the changes and justifying the results and conclusions.
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Input Values
4.95 R Recharge rate (permeability rate) (in/hr) Specific yield, Sy (dimensionless)
0.150 Sy default value is 0.15; max value is 0.2 provided that a lab test data is submitted Horizontal hydraulic conductivity (in/hr)
24.75 Kh Kh = 5xRecharge Rate (R) in the costal plan; Kh=R outside the coastal plan
20.000 x 1/2 length of basin (x direction, in feet)
14.000 y 1/2 width of basin (y direction, in feet)
45.86 t Duration of infiltration period (hours)
34.00 hi(0) Initial thickness of saturated zone (feet)
Disclaimer
This spreadsheet solving the Hantush (1967) equation for ground-water mounding beneath an infiltration basin is made available to the general public as a convenience for those wishing to replicate values documented in the USGS Scientific Investigations Report 2010-5102 "Groundwater mounding beneath hypothetical stormwater infiltration basins" or to calculate values based on user-specified site conditions. Any changes made to the spreadsheet (other than values identified as user-specified) after transmission from the USGS could have unintended, undesirable consequences. These consequences could include, but may not be limited to: erroneous output, numerical instabilities, and violations of underlying assumptions that are inherent in results presented in the accompanying USGS published report. The USGS assumes no responsibility for the consequences of any changes made to the spreadsheet. If changes are made to the spreadsheet, the user is responsible for documenting the changes and justifying the results and conclusions.
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Input Values
10.00 R
0.150 Sy
50.00 Kh
47.500 x
7.000 y
13.13 t
34.00 hi(0)
Disclaimer
This spreadsheet solving the Hantush (1967) equation for ground-water mounding beneath an infiltration basin is made available to the general public as a convenience for those wishing to replicate values documented in the USGS Scientific Investigations Report 2010-5102 "Groundwater mounding beneath hypothetical stormwater infiltration basins" or to calculate values based on user-specified site conditions. Any changes made to the spreadsheet (other than values identified as user-specified) after transmission from the USGS could have unintended, undesirable consequences. These consequences could include, but may not be limited to: erroneous output, numerical instabilities, and violations of underlying assumptions that are inherent in results presented in the accompanying USGS published report. The USGS assumes no responsibility for the consequences of any changes made to the spreadsheet. If changes are made to the spreadsheet, the user is responsible for documenting the changes and justifying the results and conclusions.
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Stormwater Management Report South Hope Chapel Rd. Subdivision Project #23184
Appendix H โ€“ Pipe System Calculations
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Storm Report Stormwater Studio 2026 v 3.0.0.40
Project Name: STORM
12-19-2025
Line No. Line No. Line ID Inlet ID Total Area (ac) Runoff Coeff (C) Tc System (min) i Syst (in/hr) Incr Q (cfs) Flow Rate (cfs) Capac. Full (cfs) Vel Ave (ft/s) Line Type n-value Pipe Line Size (in) Line Slope (%) Line Length (ft) Invert Up (ft)
1 1 P1A-16 S1A-17 0.179 0.30 10.3 5.94 0.02 0.32 3.24 0.41 Cir 0.012 12 0.71 3.73 90.03
2 2 P1A-17 S1A-18 0.167 0.30 10.0 6.00 0.30 0.30 2.73 2.22 Cir 0.012 12 0.50 36.21 92.18
3 3 P1A-6 S1A-7 0.878 0.30 11.5 5.71 0.18 2.60 10.35 3.10 Cir 0.012 15 2.19 57.16 91.25
4 4 P1A-7 S1A-8 0.778 0.76 11.0 5.79 0.96 2.47 3.49 3.02 Cir 0.012 15 0.25 79.77 91.45
5 5 P1A-8 S1A-9 0.567 0.65 10.9 5.82 1.07 1.55 3.50 2.19 Cir 0.012 15 0.25 30.00 91.73
6 6 P1A-9 S1A-10 0.289 0.30 10.0 6.00 0.52 0.52 1.93 0.99 Cir 0.012 12 0.25 106.42 92.00
7 7 P1A-13 S1A-14 0.091 0.30 10.4 5.93 0.08 0.16 3.40 0.21 Cir 0.012 12 0.77 5.17 90.04
8 8 P1A-14 S1A-15 0.046 0.30 10.0 6.00 0.08 0.08 2.73 1.53 Cir 0.012 12 0.50 32.72 91.16
9 9 P1A-1 S1A-2 0.289 0.30 11.7 5.67 0.11 0.65 5.06 0.54 Cir 0.012 15 0.52 21.00 90.11
10 10 P1A-2 S1A-3 0.229 0.67 10.9 5.82 0.30 0.56 3.50 0.53 Cir 0.012 15 0.25 97.50 90.35
11 11 P1A-3 S1A-4 0.153 0.30 10.5 5.89 0.03 0.27 1.93 0.53 Cir 0.012 12 0.25 37.40 90.69
12 12 P1A-4 S1A-5 0.137 0.30 10.0 6.00 0.25 0.25 1.93 0.62 Cir 0.012 12 0.25 53.25 90.82
13 13 P1A-11 S1A-12 0.071 0.30 10.0 6.00 0.13 0.13 3.67 0.16 Cir 0.012 12 0.91 4.12 90.04
Notes: IDF File = TrentonNJ.idf, Return Period = 25-yrs. Project File: 251219Storm Sewer Design.sws
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Stormwater Management Report South Hope Chapel Rd. Subdivision Project #23184
Appendix I โ€“ Conduit Outlet Protection
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PROJECT #: CALCULATED BY: DATE:
SCOUR HOLE 1A-16
Design Parameters
W_{0} Max Width of Pipe/Culvert 12 in
Q Flow: 25-yr Storm Discharge 0.32 cfs
TW Tail water from 2 year storm 1.59 ft
Rip Rap Stone Size Calculations
q Unit Discharge = Q/W_{0} 0.32 cfs per foot
Option 1 if Scour Hole Depth, y = 1/2 D0 6 in
Apron Dimension Calculations
Minimum Bottom Width W1 = 2 W0 2.00 ft
Minimum Bottom Length L1 = 3 D0 3.00 ft
Minimum Top Width (max side slope of 3:1), 5.00 ft
Minimum Top Length (max side slope of 3:1) 6.00 ft
Median Stone d50 = (0.0125 q1.33)/TW 4 in
Apron Thickness, TH = 2 ร— d50 8 in
Option 2 if Scour Hole Depth, y = D0 12 in
Apron Dimension Calculations
Minimum Bottom Width W1 = 2 W0 2.00 ft
Minimum Bottom Length L1 = 3 D0 3.00 ft
Minimum Top Width (max side slope of 3:1), 8.00 ft
Minimum Top Length (max side slope of 3:1) 9.00 ft
Median Stone d50 = (0.0082 q1.33)/TW 4 in
Apron Thickness, TH = 2 ร— d50 8 in
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PROJECT # : CALCULATED BY: DATE:
SCOUR HOLE 1A-13
Design Parameters
D0 Max Height of Pipe/Culvert
W0 Max Width of Pipe/Culvert
Q Flow: 25-yr Storm Discharge [F4]
TW Tail water from 2 year storm
Rip Rap Stone Size Calculations
q Unit Discharge = Q/W0 0.17 cfs per foot
Option 1 if Scour Hole Depth, y = 1/2 D0 6 in
Apron Dimension Calculations
Minimum Bottom Width W1 = 2 W0 2.00 ft
Minimum Bottom Length L1 = 3 D0 3.00 ft
Minimum Top Width (max side slope of 3:1), 5.00 ft
Minimum Top Length (max side slope of 3:1) 6.00 ft
Median Stone d50 = (0.0125 q1.33)/TW 4 in
Apron Thickness, TH = 2 ร— d50 8 in
Option 2 if Scour Hole Depth, y = D0 12 in
Apron Dimension Calculations
Minimum Bottom Width W1 = 2 W0 2.00 ft
Minimum Bottom Length L1 = 3 D0 3.00 ft
Minimum Top Width (max side slope of 3:1), 8.00 ft
Minimum Top Length (max side slope of 3:1) 9.00 ft
Median Stone d50 = (0.0082 q1.33)/TW 4 in
Apron Thickness, TH = 2 ร— d50 8 in
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PROJECT #: CALCULATED BY: DATE:
SCOUR HOLE 1A-11
W_{0} Max Width of Pipe/Culvert 12 in
Q Flow: 25-yr Storm Discharge 0.14 cfs
TW Tail water from 2 year storm 1.59 ft
Rip Rap Stone Size Calculations
q Unit Discharge = Q/W_{0} 0.14 cfs per foot
Option 1 if Scour Hole Depth, y = 1/2 D0 6 in
Apron Dimension Calculations
Minimum Bottom Width W1 = 2 W0 2.00 ft
Minimum Bottom Length L1 = 3 D0 3.00 ft
Minimum Top Width (max side slope of 3:1), 5.00 ft
Minimum Top Length (max side slope of 3:1) 6.00 ft
Median Stone d50 = (0.0125 q1.33)/TW 6 in
Apron Thickness, TH = 2 ร— d50 12 in
Option 2 if Scour Hole Depth, y = D0 12 in
Apron Dimension Calculations
Minimum Bottom Width W1 = 2 W0 0.02 ft
Minimum Bottom Length L1 = 3 D0 3.00 ft
Minimum Top Width (max side slope of 3:1), 8.00 ft
Minimum Top Length (max side slope of 3:1) 9.00 ft
Median Stone d50 = (0.0082 q1.33)/TW 4 in
Apron Thickness, TH = 2xd50 8 in
Page 1464 Download HTML
PROJECT #: CALCULATED BY: DATE:
SCOUR HOLE 1A-1
Design Parameters
W_{0} Max Width of Pipe/Culvert 15 in
Q Flow: 25-yr Storm Discharge 0.65 cfs
TW Tail water from 2 year storm 1.59 ft
Rip Rap Stone Size Calculations
q Unit Discharge = Q/W_{0} 0.52 cfs per foot
Option 1 if Scour Hole Depth, y = 1/2D0 7.5 in
Apron Dimension Calculations
Minimum Bottom Width W1 = 2 W0 2.50 ft
Minimum Bottom Length L1 = 3 D0 3.75 ft
Minimum Top Width (max side slope of 3:1), 6.25 ft
Minimum Top Length (max side slope of 3:1) 7.50 ft
Median Stone d50 = (0.0125q1.33)/TW 6 in
Apron Thickness, TH = 2 ร— d50 12 in
Option 2 if Scour Hole Depth, y = D0 15 in
Apron Dimension Calculations
Minimum Bottom Width W1 = 2 W0 2.50 ft
Minimum Bottom Length L1 = 3 D0 3.75 ft
Minimum Top Width (max side slope of 3:1), 10.00 ft
Minimum Top Length (max side slope of 3:1) 11.25 ft
Median Stone d50 = (0.0082q1.33)/TW 4 in
Apron Thickness, TH = $ 2x $ d50 8 in
[F31 [F2]
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PROJECT #: CALCULATED BY: DATE:
SCOUR HOLE 1A-6
Design Parameters
W_{0} Max Width of Pipe/Culvert 15 in
Q Flow: 25-yr Storm Discharge 2.6 cfs
TW Tail water from 2 year storm 1.59 ft
Rip Rap Stone Size Calculations
q Unit Discharge = Q/W_{0} 2.08 cfs per foot
Option 1 if Scour Hole Depth, y = 1/2 D0 7.5 in
Apron Dimension Calculations
Minimum Bottom Width W1 = 2 W0 2.50 ft
Minimum Bottom Length L1 = 3 D0 3.75 ft
Minimum Top Width (max side slope of 3:1), 6.25 ft
Minimum Top Length (max side slope of 3:1) 7.50 ft
Median Stone d50 = (0.0125 q1.33)/TW 6 in
Apron Thickness, TH = 2 ร— d50 12 in
Option 2 if Scour Hole Depth, y = D0 15 in
Apron Dimension Calculations
Minimum Bottom Width W1 = 2 W0 2.50 ft
Minimum Bottom Length L1 = 3 D0 3.75 ft
Minimum Top Width (max side slope of 3:1), 10.00 ft
Minimum Top Length (max side slope of 3:1) 11.25 ft
Median Stone d50 = (0.0082 q1.33)/TW 4 in
Apron Thickness, TH = $ 2x $ d50 8 in
[F31 [F2]
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PROJECT #: CALCULATED BY: DATE:
SCOUR HOLE 2-1
Design Parameters
W_{0} Max Width of Pipe/Culvert 12 in
Q Flow: 25-yr Storm Discharge 0.07 cfs
TW Tail water from 2 year storm 0.47 ft
Rip Rap Stone Size Calculations
q Unit Discharge = Q/W_{0} 0.07 cfs per foot
Option 1 if Scour Hole Depth, y = 1/2 D0 6 in
Apron Dimension Calculations
Minimum Bottom Width W1 = 2 W0 2.00 ft
Minimum Bottom Length L1 = 3 D0 3.00 ft
Minimum Top Width (max side slope of 3:1), 5.00 ft
Minimum Top Length (max side slope of 3:1) 6.00 ft
Median Stone d50 = (0.0125 q1.33)/TW 6 in
Apron Thickness, TH = 2 ร— d50 12 in
Option 2 if Scour Hole Depth, y = D0 12 in
Apron Dimension Calculations
Minimum Bottom Width W1 = 2 W0 2.00 ft
Minimum Bottom Length L1 = 3 D0 3.00 ft
Minimum Top Width (max side slope of 3:1), 8.00 ft
Minimum Top Length (max side slope of 3:1) 9.00 ft
Median Stone d50 = (0.0082 q1.33)/TW 4 in
Apron Thickness, TH = 2xd50 8 in
Page 1467 Download HTML
PROJECT #: CALCULATED BY: DATE:
SCOUR HOLE 2-3
Design Parameters
W0 Max Width of Pipe/Culvert 12 in
Q Flow: 25-yr Storm Discharge 0.92 cfs
TW Tail water from 2 year storm 0.47 ft
Rip Rap Stone Size Calculations
q Unit Discharge = Q/W0 0.92 cfs per foot
Option 1 if Scour Hole Depth, y = 1/2D0 6 in
Apron Dimension Calculations
Minimum Bottom Width W1 = 2 W0 2.00 ft
Minimum Bottom Length L1 = 3 D0 3.00 ft
Minimum Top Width (max side slope of 3:1), 5.00 ft
Minimum Top Length (max side slope of 3:1) 6.00 ft
Median Stone d50 = (0.0125q1.33)/TW 6 in
Apron Thickness, TH = 2 ร— d50 12 in
Option 2 if Scour Hole Depth, y = D0 12 in
Apron Dimension Calculations
Minimum Bottom Width W1 = 2 W0 2.00 ft
Minimum Bottom Length L1 = 3 D0 3.00 ft
Minimum Top Width (max side slope of 3:1), 8.00 ft
Minimum Top Length (max side slope of 3:1) 9.00 ft
Median Stone d50 = (0.0082q1.33)/TW 4 in
Apron Thickness, TH = $ 2x $ d50 8 in
Page 1468 Download HTML
PROJECT #: CALCULATED BY: DATE:
SCOUR HOLE 2-5
Design Parameters
W0 Max Width of Pipe/Culvert 12 in
Q Flow: 25-yr Storm Discharge 0 cfs
TW Tail water from 2 year storm 0.47 ft
Rip Rap Stone Size Calculations
q Unit Discharge = Q/W0 0.00 cfs per foot
Option 1 if Scour Hole Depth, y = 1/2 D0 6 in
Apron Dimension Calculations
Minimum Bottom Width W1 = 2 W0 2.00 ft
Minimum Bottom Length L1 = 3 D0 3.00 ft
Minimum Top Width (max side slope of 3:1), 5.00 ft
Minimum Top Length (max side slope of 3:1) 6.00 ft
Median Stone d50 = (0.0125 q1.33)/TW 6 in
Apron Thickness, TH = 2 ร— d50 12 in
Option 2 if Scour Hole Depth, y = D0 12 in
Apron Dimension Calculations
Minimum Bottom Width W1 = 2 W0 2.00 ft
Minimum Bottom Length L1 = 3 D0 3.00 ft
Minimum Top Width (max side slope of 3:1), 8.00 ft
Minimum Top Length (max side slope of 3:1) 9.00 ft
Median Stone d50 = (0.0082 q1.33)/TW 4 in
Apron Thickness, TH = 2 ร— d50 8 in
Page 1469 Download HTML
PROJECT #: CALCULATED BY: DATE:
SCOUR HOLE 3A-1
Design Parameters
D0 Max Height of Pipe/Culvert 12 in
W0 Max Width of Pipe/Culvert 12 in
Q Flow: 25-yr Storm Discharge 0.25 cfs
TW Tail water from 2 year storm 0.12 ft
Rip Rap Stone Size Calculations
q Unit Discharge = Q/W0 0.25 cfs per foot
Option 1 if Scour Hole Depth, y = 1/2 D0 6 in
Apron Dimension Calculations
Minimum Bottom Width W1 = 2 W0 2.00 ft
Minimum Bottom Length L1 = 3 D0 3.00 ft
Minimum Top Width (max side slope of 3:1), 5.00 ft
Minimum Top Length (max side slope of 3:1) 6.00 ft
Median Stone d50 = (0.0125 q1.33)/TW 6 in
Apron Thickness, TH = 2 ร— d50 12 in
Option 2 if Scour Hole Depth, y = D0 12 in
Apron Dimension Calculations
Minimum Bottom Width W1 = 2 W0 2.00 ft
Minimum Bottom Length L1 = 3 D0 3.00 ft
Minimum Top Width (max side slope of 3:1), 8.00 ft
Minimum Top Length (max side slope of 3:1) 9.00 ft
Median Stone d50 = (0.0082 q1.33)/TW 4 in
Apron Thickness, TH = 2 ร— d50 8 in
Page 1470 Download HTML
PROJECT #: CALCULATED BY: DATE:
SCOUR HOLE 3-1
Design Parameters
W_{0} Max Width of Pipe/Culvert 12 in
Q Flow: 25-yr Storm Discharge 0.08 cfs
TW Tail water from 2 year storm 0.01 ft
Rip Rap Stone Size Calculations
q Unit Discharge = Q/W_{0} 0.08 cfs per foot
Option 1 if Scour Hole Depth, y = 1/2 D0 6 in
Apron Dimension Calculations
Minimum Bottom Width W1 = 2 W0 2.00 ft
Minimum Bottom Length L1 = 3 D0 3.00 ft
Minimum Top Width (max side slope of 3:1), 5.00 ft
Minimum Top Length (max side slope of 3:1) 6.00 ft
Median Stone d50 = (0.0125 q1.33)/TW 6 in
Apron Thickness, TH = 2 ร— d50 12 in
Option 2 if Scour Hole Depth, y = D0 12 in
Apron Dimension Calculations
Minimum Bottom Width W1 = 2 W0 2.00 ft
Minimum Bottom Length L1 = 3 D0 3.00 ft
Minimum Top Width (max side slope of 3:1), 8.00 ft
Minimum Top Length (max side slope of 3:1) 9.00 ft
Median Stone d50 = (0.0082 q1.33)/TW 4 in
Apron Thickness, TH = 2x d50 8 in
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PROJECT #: CALCULATED BY: DATE:
SCOUR HOLE 3-3
Design Parameters
D_0 Max Height of Pipe/Culvert 12 in
W_0 Max Width of Pipe/Culvert 12 in
Q Flow: 25-yr Storm Discharge 1.02 cfs
TW Tail water from 2 year storm 0.01 ft
Rip Rap Stone Size Calculations
q Unit Discharge = Q/W_0 1.02 cfs per foot
Option 1 if Scour Hole Depth, y = 1/2 D0 6 in
Apron Dimension Calculations
Minimum Bottom Width W_1=2 W_0 2.00 ft
Minimum Bottom Length L_1=3 D_0 3.00 ft
Minimum Top Width (max side slope of 3:1), 5.00 ft
Minimum Top Length (max side slope of 3:1) 6.00 ft
Median Stone d_50= 0.0125 q1.33 TW 6 in
Apron Thickness, TH = 2 ร— d_50 12 in
Option 2 if Scour Hole Depth, y = D_0 12 in
Apron Dimension Calculations
Minimum Bottom Width W_1=2 W_0 2.00 ft
Minimum Bottom Length L_1=3 D_0 3.00 ft
Minimum Top Width (max side slope of 3:1), 8.00 ft
Minimum Top Length (max side slope of 3:1) 9.00 ft
Median Stone d_50= 0.0082 q1.33 TW 15.4 in
Apron Thickness, TH = 2x d_50 30.8 in
Preformed Scour Hole
PLAN
Section A - A
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PROJECT #: CALCULATED BY: DATE:
SCOUR HOLE 3-5
Design Parameters
W0 Max Width of Pipe/Culvert 12 in
Q Flow: 25-yr Storm Discharge 0 cfs
TW Tail water from 2 year storm 0.01 ft
Rip Rap Stone Size Calculations
q Unit Discharge = Q/W0 0.00 cfs per foot
Option 1 if Scour Hole Depth, y = 1/2 D0 6 in
Apron Dimension Calculations
Minimum Bottom Width W1 = 2 W0 2.00 ft
Minimum Bottom Length L1 = 3 D0 3.00 ft
Minimum Top Width (max side slope of 3:1), 5.00 ft
Minimum Top Length (max side slope of 3:1) 6.00 ft
Median Stone d50 = (0.0125 q1.33)/TW 6 in
Apron Thickness, TH = 2 ร— d50 12 in
Option 2 if Scour Hole Depth, y = D0 12 in
Apron Dimension Calculations
Minimum Bottom Width W1 = 2 W0 2.00 ft
Minimum Bottom Length L1 = 3 D0 3.00 ft
Minimum Top Width (max side slope of 3:1), 8.00 ft
Minimum Top Length (max side slope of 3:1) 9.00 ft
Median Stone d50 = (0.0082 q1.33)/TW 4 in
Apron Thickness, TH = 2 ร— d50 8 in
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Stormwater Management Report South Hope Chapel Rd. Subdivision Project #23184
Appendix J โ€“ Drainage Area Maps
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REVISED PER NJ PINELANDS COMMISSION REVIEW 10/24/25 TP
ALL DRAWINGS AND WRITTEN MATERIAL APPEARING HEREIN CONSTITUTED ORIGIN/ AND UNPUBLISHED WORK OF THE ENGINEER AND MAY NOT BE DUPLICATED, USED OR DISCLOSED WITHOUT WRITTEN CONSENT OF THE ENGINEER.
E CIVIL CORE CONSULTING, LLC 1969 RUTGERS UNIVERSITY BLVD. LAKEWOOD, NJ 08701
NJ CERTIFICATE OF AUTHORIZATION NO. 24GA28399400
PROJECT: PRELIMINARY/FINAL MAJOR SUBDIVISION FOR 198, 202 & 210 SOUTH HOPE CHAPEL RD
LOCATION: BLOCK 20701, LOT 12, 13, & 14 TOWNSHIP OF JACKSON OCEAN COUNTY NEW JERSEY
DRAWING TITLE: PROPOSED CONDITIONS DRAINAGE AREA MAP
PROJECT NO. 23184 DATE 7/20/2025 DRAWN BY TP/HH CHECKED BY YP
YOSEF PORTNOY LICENSED PROFESSIONAL ENGINEER NJ LICENSE NO: GE53593 SCALE AS NOTED SHEET NO. 1 OF 1
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REVISED PER NJ PINELANDS COMMISSION REVIEW10/24/25TP
ALL DRAWINGS AND WRITTEN MATERIAL APPEARING HEREIN, CONSTITUTED ORIGINAL AND UNPUBLISHED WORK OF THE ENGINEER AND MAY NOT BE DUPLATED, USED OR DISUSED WITHOUT WRITTEN CONSENT OF THE ENGINEER.
CIVIL CORE
PROJECT: PRELIMINARY/FINAL
MAJOR SUBDIVISION FOR 198, 202 & 210 SOUTH HOPE CHAPEL RD
LOCATION: BLOCK 20701, LOT 12, 13, & 14
TOWNSHIP OF JACKSON
OCEAN COUNTY
NEW JERSEY
DRAWING TITLE: INLET AREA MAP
PROJECT NO. 23184DATE 7/20/2025DRAWN BY TPIHH CHECKED BY YP
YOSEF PORTNOYSCALE AS NOTED SHEET NO. 1
LICENSED PROFESSIONAL ENGINEER
NO LICENSE NO: GE53593
0 30' 60' 1" = 30'
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