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ERIC HALPERT PE DRAINAGE NARRATIVE

STORMWATER MANAGEMENT REPORT (SWMR)

PRELIMINARY AND FINAL MAJOR SUBDIVISION BLOCK 20101 LOTS 29 & 30 102 SAMS ROAD TOWNSHIP OF JACKSON OCEAN COUNTY, NEW JERSEY

PREPARED ON OCTOBER 06, 2025

Eric Halpert PE Professional Engineer 640 Herman Road Unit 1, Jackson, New Jersey 08527

NJ LIC # 55771

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Table of Contents

Existing Conditions.....1 Soils.....1 Proposed Conditions .....1 Stormwater Management System.....1 Water Quality.....2 Water Quantity.....2 Groundwater Recharge.....2 Groundwater Mounding.....3 Storm Sewers.....3 Soil Erosion and Sediment Control.....3 Conclusion.....3

Appendices

Appendix A – Existing Conditions Analysis Appendix B – WQ Analysis Appendix C – Proposed Conditions Analysis Appendix D – Storm Sewer Calculations Appendix E – Conduit Outlet Calculations Appendix F – SCD Analysis Appendix G – GW Mounding Calculations Appendix H – Soils Appendix I – DA Maps

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Existing Conditions

The subject property is located almost at the end of Sams Road. The site contains one building with a gravel driveway providing access to Sams Road, a woodland or heavy vegetation area with some dirt roads crossing the property. The site exhibits environmental constraint in the southernmost corner of the property. Runoff from the site flows to the rear site of the lot (POA).

Soils

Based on the NRCS Soil Survey the site is mapped as Downer Loamy Sand, Mullica Sandy Loam and Sassafras sandy loam (HSG A). Preliminary Soil evaluations were conducted on the site including test pits and field percolations tests. The site had a tested permeability rate ranging from 12.2 and 14.5 inches/hr which results in a design permeability rate ranging from 6.1 and 7.25 in/hr. Groundwater table or signs of SHWT were encountered at 7.1 feet below grade (el. 89.0). Test pit logs and infiltration test results are included in the appendix. Additional soil testing shall be undertaken as part of resolution compliance.

Proposed Conditions

The applicant proposes to construct a Major Subdivision, along with associated site improvements such as new roadway, landscape, lighting, and stormwater management.

Stormwater management system

The stormwater management system consists of 2 surface infiltration basins and individual subsurface basins for each dwelling. Surface runoff from the site is partially directed to the 2 surface basins for water quality treatment and attenuation. Runoff from remaining woodland area of the property is not captured in the proposed stormwater facilities. Each proposed roof runoff is directed to the individual lot subsurface basin. An outlet control structure is proposed in each surface basin which will direct runoff in excess of the water quality storm via a 15" (Surface #1) and 6" (Surface #2) outlet pipe to convey excess runoff beyond required reductions to a swale near the property limit.

The system was routed using HydroCAD software for the 2, 10, 25, and 100 year events. Calculations are included in the appendix.

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Water quality

Water quality treatment is provided for all proposed motor vehicle surfaces by the surface infiltration basins. A surface infiltration basin is considered green infrastructure and provides 80% TSS Removal. The basins will have a six inch sand layer and a maximum water quality storm depth of 0.61 and 0.70 feet which is below the maximum 2 foot depth allowed by the NJDEP BMP manual. The individual drainage areas to the systems for each lot are less than 2.5 acres and therefore meet the small scale requirements. Roof runoff which does not require water quality treatment, will be conveyed directly to the subsurface system.

Water Quantity

Water quantity will be met by meeting the runoff reduction requirements to the point of analysis as demonstrated in the table below and the HydroCAD calculations in the appendix. Note that infiltration was included in the water quantity routing as allowed by the NJDEP BMP Manual. The roof runoff does not require pretreatment.

POA

Storm EventExisting Peak Runoff (cfs)Required Reduction (%)Allowable Peak Runoff (cfs)Proposed Peak Runoff (cfs)
21.08500.540.43
101.71751.280.67
1003.02802.422.36

Groundwater recharge

Groundwater recharge is provided by infiltrating the increase in 2 year runoff from the site.

Existing 2 year runoff – 3,958 cf

Proposed 2 year runoff (post infiltration) – 1394 cf

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Green Infrastructure

The intent of the green infrastructure requirement is to mimic the natural hydrologic cycle. To do so, the rules require stormwater water runoff to be treated near the source with distributed and small-scale (limited contributory drainage area) green infrastructure BMPs. Small-scale GI BMPs are achieved through the contributory drainage area limitations. The proposed BMP's are considered green infrastructure under BMP manual 9.2 Dry Wells and 9.8 Small Scale infiltration basins.

Groundwater Mounding

A groundwater mounding analysis was performed to confirm that the ground water mound associated with the infiltration basins will not impact the operation of the basins. As the basins are designed to infiltrate the 100 year storm events the mounding analysis was performed based on the full 100 year exfiltration volume.

Separate mounding analysis were performed for the surface basin, and of the subsurface basin. The highest SHWT of 89.0 was utilized for groundwater mounding calculations

BasinMound HeightPeak Mound elevationbasin bottom elevation
Surface #15.90194.90195.00
Surface #21.94190.94191.00
Subsurface ( LOT 30.08)1.30990.30990.50

Storm Sewers

The storm sewers were designed to convey the 25-year storm event. Storm sewers were sized using the rational method and manning equation. See appendix for calculations.

Soil Erosion and Sediment Control

Soil erosion and sediment control measures are incorporated into the design including silt fence, inlet protection, and stabilized construction access

A scour hole has been designed for the outfall into the basin in accordance with the methods prescribed in the Standards for Soil Erosion and Sediment Control in New Jersey.

Downstream stability is met by meeting peak flow reductions.

For point of discharge stability analysis, a failure analysis has been performed assuming the surface infiltration basin does not function and is full to the lowest orifice. The proposed basin(s) discharge to a proposed bubbler outlet which represents a stable discharge

Conclusion

The stormwater management system has been designed to manage the increase in runoff associated with the proposed development. The design conforms to the Township, NJDEP, and Soil Conservation District standards.

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APPENDIX A

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Area Listing (selected nodes)

Area (sq-ft)CNDescription (subcatchment-numbers)
1,87398Paved parking, HSG A (124S)
8,36498Unconnected pavement, HSG A (124S)
4,66698Unconnected roofs, HSG A (142S)
558,77730Woods, Good, HSG A (118S)
573,68032TOTAL AREA
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102 Sams -REV 12-02-25 Prepared by Haler Consulting HydroCAD® 10.20-2h s/n 10351 © 2024 HydroCAD Software Solutions LLC NOAA 24-hr D 2-Year Rainfall=3.42" Printed 04/12/2025 Page 3

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 Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 118S: DA E1 (Pervious) Runoff Area=558,777 sf 0.00% Impervious Runoff Depth=0.00" Flow Length=1,241' Tc=60.4 min CN=30/0 Runoff=0.00 cfs 0 cf Subcatchment 124S: DA E3 (Impervious) Runoff Area=0.235 ac 18.30% Impervious Runoff Depth=3.19" Flow Length=195' Tc=1.6 min CN=98/98 Runoff=0.82 cfs 2,718 cf Subcatchment 142S: DA E2 (Roof) Runoff Area=4,666 sf 0.00% Impervious Runoff Depth=3.19" Tc=6.0 min CN=98/0 Runoff=0.28 cfs 1,239 cf Link 141L: POA Inflow=1.08 cfs 3,958 cf Primary=1.08 cfs 3,958 cf Total Runoff Area = 573,680 sf Runoff Volume = 3,958 cf Average Runoff Depth = 0.08" 99.67% Pervious = 571,807 sf 0.33% Impervious = 1,873 sf

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Summary for Subcatchment 118S: DA E1 (Pervious)

Runoff = 0.00 cfs @ 0.00 hrs, Volume= Routed to Link 141L : POA

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= NOAA 24-hr D 2-Year Rainfall=3.42"

Area (sf) CN Description

558,777 30 Woods, Good, HSG A

558,777 30 100.00% Pervious Area

Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)

30.8 100 0.0075 0.05 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 3.42" Shallow Concentrated Flow, Woodland Kv= 5.0 fps

29.6 1,141 0.0165 0.64

60.4 1.241 Total

60.4 1,241 Total

Subcatchment 118S: DA E1 (Pervious)

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Summary for Subcatchment 124S: DA E3 (Impervious)

Runoff = 0.82 cfs @ 12.10 hrs, Volume= 2,718 cf, Depth= 3.19" Routed to Link 141L : POA

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-Year Rainfall=3.42"

Area (ac) CN Description

0.192 98 Unconnected pavement, HSG A

0.043 98 Paved parking, HSG A

0.235 98 Weighted Average

0.192 98 81.70% Pervious Area

0.043 98 18.30% Impervious Area

Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description

1.2 100 0.0200 1.42 Sheet Flow,

0.4 95 0.0475 4.42 Smooth surfaces n= 0.011 P2= 3.42"

Paved Kv= 20.3 fps

1.6 195 Total

Shallow Concentrated Flow,

1.6 105 Total

Subcatchment 124S: DA E3 (Impervious)

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Summary for Subcatchment 142S: DA E2 (Roof)

Runoff = 0.28 cfs @ 12.14 hrs, Volume= 1,239 cf, Depth= 3.19" Routed to Link 141L : POA

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-Year Rainfall=3.42"

Area (sf)CNDescription
4,66698Unconnected roofs, HSG A
4,66698100.00% Pervious Area
Tc (min)Length (feet)Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)
6.0Direct Entry,

Subcatchment 142S: DA E2 (Roof)

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Summary for Link 141L: POA

Inflow Area = 573,680 sf, 0.33% Impervious, Inflow Depth = 0.08" for 2-Year event Inflow = 1.08 cfs @ 12.10 hrs, Volume = 3,958 cf Primary = 1.08 cfs @ 12.10 hrs, Volume = 3,958 cf, Atten = 0%, Lag = 0.0 min

Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs

Link 141L: POA

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102 Sams -REV 12-02-25 NOAA 24-hr D 10-Year Rainfall=5.38" Prepared by Haler Consulting Printed 04/12/2025 HydroCAD® 10.20-2h s/n 10351 © 2024 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 Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 118S: DA E1 (Pervious) Runoff Area=558,777 sf 0.00% Impervious Runoff Depth=0.02" Flow Length=1,241' Tc=60.4 min CN=30/0 Runoff=0.04 cfs 985 cf Subcatchment 124S: DA E3 (Impervious) Runoff Area=0.235 ac 18.30% Impervious Runoff Depth=5.14" Flow Length=195' Tc=1.6 min CN=98/98 Runoff=1.30 cfs 4,387 cf Subcatchment 142S: DA E2 (Roof) Runoff Area=4,666 sf 0.00% Impervious Runoff Depth=5.14" Tc=6.0 min CN=98/0 Runoff=0.45 cfs 2,000 cf Link 141L: POA Inflow=1.71 cfs 7,372 cf Primary=1.71 cfs 7,372 cf Total Runoff Area = 573,680 sf Runoff Volume = 7,372 cf Average Runoff Depth = 0.15" 99.67% Pervious = 571,807 sf 0.33% Impervious = 1,873 sf

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Summary for Subcatchment 118S: DA E1 (Pervious)

Runoff = 0.04 cfs @ 24.15 hrs, Volume= 985 cf, Depth= 0.02" Routed to Link 141L : POA

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-Year Rainfall=5.38"

Area (sf) CN Description

558,777 30 Woods, Good, HSG A

558,777 30 100.00% Pervious Area

Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)

30.8 100 0.0075 0.05 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 3.42" Shallow Concentrated Flow, Woodland Kv= 5.0 fps

29.6 1,141 0.0165 0.64

60.4 1,241 Total

60.4 1,241 Total

Subcatchment 118S: DA E1 (Pervious)

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Summary for Subcatchment 124S: DA E3 (Impervious)

Runoff = 1.30 cfs @ 12.10 hrs, Volume= 4,387 cf, Depth= 5.14" Routed to Link 141L : POA

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-Year Rainfall=5.38"

Area (ac) CN Description

0.192 98 Unconnected pavement, HSG A

0.043 98 Paved parking, HSG A

0.235 98 Weighted Average

0.192 98 81.70% Pervious Area

0.043 98 18.30% Impervious Area

Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description

1.2 100 0.0200 1.42 Sheet Flow,

0.4 95 0.0475 4.42 Smooth surfaces n= 0.011 P2= 3.42"

Paved Kv= 20.3 fps

1.6 195 Total

1.6 195 Total

Shallow Concentrated Flow,

Subcatchment 124S: DA E3 (Impervious)

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Summary for Subcatchment 142S: DA E2 (Roof)

Runoff = 0.45 cfs @ 12.14 hrs, Volume= 2,000 cf, Depth= 5.14" Routed to Link 141L : POA

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-Year Rainfall=5.38"

Area (sf)CNDescription
4,66698Unconnected roofs, HSG A
4,66698100.00% Pervious Area
Tc (min)Length (feet)Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)
6.0Direct Entry,

Subcatchment 142S: DA E2 (Roof)

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Summary for Link 141L: POA

Inflow Area = 573,680 sf, 0.33% Impervious, Inflow Depth = 0.15" for 10-Year event Inflow = 1.71 cfs @ 12.10 hrs, Volume = 7,372 cf Primary = 1.71 cfs @ 12.10 hrs, Volume = 7,372 cf, Atten = 0%, Lag = 0.0 min

Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs

Link 141L: POA

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102 Sams -REV 12-02-25 NOAA 24-hr D 100-Year Rainfall=9.48" Prepared by Haler Consulting Printed 04/12/2025 HydroCAD® 10.20-2h s/n 10351 © 2024 HydroCAD Software Solutions LLC Page 13

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 Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 118S: DA E1 (Pervious) Runoff Area=558,777 sf 0.00% Impervious Runoff Depth=0.82" Flow Length=1,241' Tc=60.4 min CN=30/0 Runoff=1.56 cfs 38,329 cf Subcatchment 124S: DA E3 (Impervious) Runoff Area=0.235 ac 18.30% Impervious Runoff Depth=9.24" Flow Length=195' Tc=1.6 min CN=98/98 Runoff=2.30 cfs 7,882 cf Subcatchment 142S: DA E2 (Roof) Runoff Area=4,666 sf 0.00% Impervious Runoff Depth=9.24" Tc=6.0 min CN=98/0 Runoff=0.79 cfs 3,593 cf Link 141L: POA Inflow=3.02 cfs 49,803 cf Primary=3.02 cfs 49,803 cf Total Runoff Area = 573,680 sf Runoff Volume = 49,803 cf Average Runoff Depth = 1.04" 99.67% Pervious = 571,807 sf 0.33% Impervious = 1,873 sf

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Summary for Subcatchment 118S: DA E1 (Pervious)

Runoff = 1.56 cfs @ 13.82 hrs, Volume= 38,329 cf, Depth= 0.82" Routed to Link 141L : POA

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-Year Rainfall=9.48"

Area (sf) CN Description

558,777 30 Woods, Good, HSG A

558,777 30 100.00% Pervious Area

Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)

30.8 100 0.0075 0.05 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 3.42" Shallow Concentrated Flow, Woodland Kv= 5.0 fps

29.6 1,141 0.0165 0.64

60.4 1.241 Total

60.4 1,241 Total

Subcatchment 118S: DA E1 (Pervious)

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Summary for Subcatchment 124S: DA E3 (Impervious)

Runoff = 2.30 cfs @ 12.10 hrs, Volume= 7,882 cf, Depth= 9.24" Routed to Link 141L : POA

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-Year Rainfall=9.48"

Area (ac) CN Description

0.192 98 Unconnected pavement, HSG A

0.043 98 Paved parking, HSG A

0.235 98 Weighted Average

0.192 98 81.70% Pervious Area

0.043 98 18.30% Impervious Area

Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description

1.2 100 0.0200 1.42 Sheet Flow,

Shallow Concentrated Flow, Paved Kv= 20.3 fps

1.6 195 Total

1.6 195 Total

0.4 95 0.0475 4.42 Smooth surfaces n= 0.011 P2= 3.42"

Subcatchment 124S: DA E3 (Impervious)

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Summary for Subcatchment 142S: DA E2 (Roof)

Runoff = 0.79 cfs @ 12.14 hrs, Volume= 3,593 cf, Depth= 9.24" Routed to Link 141L : POA

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-Year Rainfall=9.48"

Area (sf)CNDescription
4,66698Unconnected roofs, HSG A
4,66698100.00% Pervious Area
Tc (min)Length (feet)Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)
6.0Direct Entry

Direct Entry,

Subcatchment 142S: DA E2 (Roof)

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Summary for Link 141L: POA

Inflow Area = 573,680 sf, 0.33% Impervious, Inflow Depth = 1.04" for 100-Year event Inflow = 3.02 cfs @ 12.10 hrs, Volume = 49,803 cf Primary = 3.02 cfs @ 12.10 hrs, Volume = 49,803 cf, Atten = 0%, Lag = 0.0 min

Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs

Link 141L: POA

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APPENDIX B

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Area Listing (selected nodes)

Area (sq-ft)CNDescription (subcatchment-numbers)
139,94439>75% Grass cover, Good, HSG A (173S, 176S)
55,09598Paved parking, HSG A (171S, 175S)
195,03956TOTAL AREA
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102 Sams -REV 12-02-25 NJ DEP 2-hr NJDEP Rainfall=1.25" Prepared by Haler Consulting Printed 04/12/2025 HydroCAD® 10.20-2h s/n 10351 © 2024 HydroCAD Software Solutions LLC Page 3

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 Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 171S: DA P1 (Impervious) Runoff Area=31,625 sf 100.00% Impervious Runoff Depth=1.03" Flow Length=450' Tc=3.0 min CN=0/98 Runoff=2.10 cfs 2,727 cf Subcatchment 173S: DA P4 (Pervious) Runoff Area=76,971 sf 0.00% Impervious Runoff Depth=0.00" Flow Length=196' Slope=0.0100'/' Tc=14.8 min CN=39/0 Runoff=0.00 cfs 0 cf Subcatchment 175S: DA P2 (Impervious) Runoff Area=23,470 sf 100.00% Impervious Runoff Depth=1.03" Flow Length=450' Tc=4.9 min CN=0/98 Runoff=1.38 cfs 2,023 cf Subcatchment 176S: DA P3 (Pervious) Runoff Area=62,973 sf 0.00% Impervious Runoff Depth=0.00" Flow Length=316' Slope=0.0200'/' Tc=13.1 min CN=39/0 Runoff=0.00 cfs 0 cf Pond 174P: WQ Infiltration Basin #1 Peak Elev=95.61' Storage=2,726 cf Inflow=2.10 cfs 2,727 cf Discarded=0.00 cfs 0 cf Primary=0.00 cfs 0 cf Outflow=0.00 cfs 0 cf Pond 177P: WQ Infiltration Basin #2 Peak Elev=91.70' Storage=2,023 cf Inflow=1.38 cfs 2,023 cf Discarded=0.00 cfs 0 cf Primary=0.00 cfs 0 cf Outflow=0.00 cfs 0 cf Total Runoff Area = 195,039 sf Runoff Volume = 4,750 cf Average Runoff Depth = 0.29" 71.75% Pervious = 139,944 sf 28.25% Impervious = 55,095 sf

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Summary for Subcatchment 171S: DA P1 (Impervious)

Runoff = 2.10 cfs @ 1.09 hrs, Volume= 2,727 cf, Depth= 1.03" Routed to Pond 174P : WQ 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= NJ DEP 2-hr NJDEP Rainfall=1.25"

Area (sf)CNDescription
31,62598Paved parking, HSG A
098Unconnected pavement, HSG A
098Unconnected pavement, HSG A
098Paved parking, HSG A
098Unconnected pavement, HSG A
31,62598Weighted Average
31,62598100.00% Impervious Area
Tc (min)Length (feet)Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)
1.21000.0200 1.42
1.83500.0250 3.21
3.0450Total

Subcatchment 171S: DA P1 (Impervious)

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Summary for Subcatchment 173S: DA P4 (Pervious)

Runoff = 0.00 cfs @ 0.00 hrs, Volume=0 cf, Depth=0.00"

Routed to Pond 174P : WQ Infiltration Basin #1

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 Rainfall=1.25"

Area (sf) CN Description

76,971 39 >75% Grass cover, Good, HSG A

76,971 39 100.00% Pervious Area

Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description

12.5 100 0.0100 0.13 Sheet Flow, Grass: Short n= 0.150 P2= 3.42"

2.3 96 0.0100 0.70 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps

14.8 196 Total

Subcatchment 173S: DA P4 (Pervious)

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Summary for Subcatchment 175S: DA P2 (Impervious)

Runoff = 1.38 cfs @ 1.11 hrs, Volume= 2,023 cf, Depth= 1.03" Routed to Pond 177P : WQ Infiltration Basin #2

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 Rainfall=1.25"

Area (sf) CN Description

23,470 98 Paved parking, HSG A

0 98 Unconnected pavement, HSG A

0 98 Unconnected pavement, HSG A

0 98 Paved parking, HSG A

0 98 Unconnected pavement, HSG A

23,470 98 Weighted Average

23,470 98 100.00% Impervious Area

Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)

4.1 350 0.0050 1.44

4.9 450 Total

0.8 100 0.0500 2.05

Subcatchment 175S: DA P2 (Impervious)

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Summary for Subcatchment 176S: DA P3 (Pervious)

Runoff = 0.00 cfs @ 0.00 hrs, Volume=0 cf, Depth=0.00"

Routed to Pond 177P : WQ Infiltration Basin #2

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 Rainfall=1.25"

Area (sf) CN Description

62,973 39 >75% Grass cover, Good, HSG A

62,973 39 100.00% Pervious Area

Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)

9.5 100 0.0200 0.18 Sheet Flow, Grass: Short n= 0.150 P2= 3.42"

3.6 216 0.0200 0.99 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps

13.1 316 Total

Subcatchment 176S: DA P3 (Pervious)

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Summary for Pond 174P: WQ Infiltration Basin #1

Inflow Area = 108,596 sf, 29.12% Impervious, Inflow Depth = 0.30" for NJDEP event

Inflow = 2.10 cfs @ 1.09 hrs, Volume= 2,727 cf

Outflow = 0.00 cfs @ 0.00 hrs, Volume= 0 cf, Atten= 100%, Lag= 0.0 min

Discarded = 0.00 cfs @ 0.00 hrs, Volume= 0 cf

Primary = 0.00 cfs @ 0.00 hrs, Volume= 0 cf

Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs

Peak Elev= 95.61' @ 2.34 hrs Surf.Area= 4,754 sf Storage= 2,726 cf

Plug-Flow detention time= (not calculated: initial storage exceeds outflow)

Center-of-Mass det. time= (not calculated: no outflow)

VolumeInvertAvail.StorageStorage Description
#195.00'16,706 cfCustom Stage Data (Prismatic) Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
95.004,23100
96.005,0924,6624,662
97.006,0085,55010,212
98.006,9816,49516,706
DeviceRoutingInvertOutlet Devices
#1Primary97.60'15.0" Round Culvert to Subsurface Basin X 0.00 L= 35.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 95.00' / 97.60' S= -0.0743'' Cc= 0.900 n= 0.012 Corrugated PP, smooth interior, Flow Area= 1.23 sf
#2Device 197.00'4.0' long Sharp-Crested Rectangular Weir X 0.00 2 End Contraction(s)
#3Discarded95.00'3.100 in/hr Exfiltration X 0.00 over Surface area

Discarded OutFlow Max=0.00 cfs @ 0.00 hrs HW=95.00' (Free Discharge) 3=Exfiltration (Controls 0.00 cfs)

Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=95.00' (Free Discharge) 1=Culvert to Subsurface Basin (Controls 0.00 cfs) 2=Sharp-Crested Rectangular Weir (Controls 0.00 cfs)

Page 33 Download HTML

Page 9

Pond 174P: WQ Infiltration Basin #1

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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Stage-Discharge for Pond 174P: WQ Infiltration Basin #1

Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)
95.000.000.000.0097.600.000.000.00
95.050.000.000.0097.650.000.000.00
95.100.000.000.0097.700.000.000.00
95.150.000.000.0097.750.000.000.00
95.200.000.000.0097.800.000.000.00
95.250.000.000.0097.850.000.000.00
95.300.000.000.0097.900.000.000.00
95.350.000.000.0097.950.000.000.00
95.400.000.000.0098.000.000.000.00
95.450.000.000.0098.050.000.000.00
95.500.000.000.0098.100.000.000.00
95.550.000.000.0098.150.000.000.00
95.600.000.000.0098.200.000.000.00
95.650.000.000.0098.250.000.000.00
95.700.000.000.0098.300.000.000.00
95.750.000.000.0098.350.000.000.00
95.800.000.000.0098.400.000.000.00
95.850.000.000.0098.450.000.000.00
95.900.000.000.0098.500.000.000.00
95.950.000.000.0098.550.000.000.00
96.000.000.000.0098.600.000.000.00
96.050.000.000.0098.650.000.000.00
96.100.000.000.0098.700.000.000.00
96.150.000.000.0098.750.000.000.00
96.200.000.000.0098.800.000.000.00
96.250.000.000.0098.850.000.000.00
96.300.000.000.00
96.350.000.000.00
96.400.000.000.00
96.450.000.000.00
96.500.000.000.00
96.550.000.000.00
96.600.000.000.00
96.650.000.000.00
96.700.000.000.00
96.750.000.000.00
96.800.000.000.00
96.850.000.000.00
96.900.000.000.00
96.950.000.000.00
97.000.000.000.00
97.050.000.000.00
97.100.000.000.00
97.150.000.000.00
97.200.000.000.00
97.250.000.000.00
97.300.000.000.00
97.350.000.000.00
97.400.000.000.00
97.450.000.000.00
97.500.000.000.00
97.550.000.000.00
Page 35 Download HTML

Page 11

Stage-Area-Storage for Pond 174P: WQ Infiltration Basin #1

Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
95.004,231097.606,59213,991
95.054,27421397.656,64014,322
95.104,31742797.706,68914,655
95.154,36064497.756,73814,991
95.204,40386397.806,78615,329
95.254,4461,08597.856,83515,670
95.304,4891,30897.906,88416,013
95.354,5321,53497.956,93216,358
95.404,5751,76198.006,98116,706
95.454,6181,99198.056,98116,706
95.504,6622,22398.106,98116,706
95.554,7052,45798.156,98116,706
95.604,7482,69498.206,98116,706
95.654,7912,93298.256,98116,706
95.704,8343,17398.306,98116,706
95.754,8773,41598.356,98116,706
95.804,9203,66098.406,98116,706
95.854,9633,90798.456,98116,706
95.905,0064,15798.506,98116,706
95.955,0494,40898.556,98116,706
96.005,0924,66298.606,98116,706
96.055,1384,91798.656,98116,706
96.105,1845,17598.706,98116,706
96.155,2295,43698.756,98116,706
96.205,2755,69898.806,98116,706
96.255,3215,96398.856,98116,706
96.305,3676,230
96.355,4136,500
96.405,4586,772
96.455,5047,046
96.505,5507,322
96.555,5967,601
96.605,6427,882
96.655,6878,165
96.705,7338,450
96.755,7798,738
96.805,8259,028
96.855,8719,321
96.905,9169,615
96.955,9629,912
97.006,00810,212
97.056,05710,513
97.106,10510,817
97.156,15411,124
97.206,20311,433
97.256,25111,744
97.306,30012,058
97.356,34912,374
97.406,39712,693
97.456,44613,014
97.506,49513,337
97.556,54313,663
Page 36 Download HTML

Summary for Pond 177P: WQ Infiltration Basin #2

Inflow Area = 86,443 sf, 27.15% Impervious, Inflow Depth = 0.28" for NJDEP event

Inflow = 1.38 cfs @ 1.11 hrs, Volume= 2,023 cf

Outflow = 0.00 cfs @ 0.00 hrs, Volume= 0 cf, Atten= 100%, Lag= 0.0 min

Discarded = 0.00 cfs @ 0.00 hrs, Volume= 0 cf

Primary = 0.00 cfs @ 0.00 hrs, Volume= 0 cf

Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs

Peak Elev= 91.70' @ 2.55 hrs Surf.Area= 3,116 sf Storage= 2,023 cf

Plug-Flow detention time= (not calculated: initial storage exceeds outflow)

Center-of-Mass det. time= (not calculated: no outflow)

VolumeInvertAvail.StorageStorage Description
#191.00'13,818 cfCustom Stage Data (Prismatic) Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
91.002,62800
92.003,3202,9742,974
93.004,0673,6946,668
94.005,0104,53911,206
94.505,4382,61213,818
DeviceRoutingInvertOutlet Devices
#1Primary93.80'6.0" Round Culvert to Subsurface Basin X 0.00 L = 35.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 92.00' / 93.80' S= -0.0514'' Cc= 0.900 n= 0.012 Corrugated PP, smooth interior, Flow Area= 0.20 sf
#2Device 193.00'4.0' long Sharp-Crested Rectangular Weir X 0.00 2 End Contraction(s)
#3Discarded91.00'1.050 in/hr Exfiltration X 0.00 over Surface area

Discarded OutFlow Max=0.00 cfs @ 0.00 hrs HW=91.00' (Free Discharge) 3=Exfiltration (Controls 0.00 cfs)

Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=91.00' (Free Discharge) 1=Culvert to Subsurface Basin (Controls 0.00 cfs) 2=Sharp-Crested Rectangular Weir (Controls 0.00 cfs)

Page 37 Download HTML

Page 13

Pond 177P: WQ Infiltration Basin #2

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)

Inflow Outflow Discarded Primary

Page 38 Download HTML

Stage-Discharge for Pond 177P: WQ Infiltration Basin #2

Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)
91.000.000.000.0093.600.000.000.00
91.050.000.000.0093.650.000.000.00
91.100.000.000.0093.700.000.000.00
91.150.000.000.0093.750.000.000.00
91.200.000.000.0093.800.000.000.00
91.250.000.000.0093.850.000.000.00
91.300.000.000.0093.900.000.000.00
91.350.000.000.0093.950.000.000.00
91.400.000.000.0094.000.000.000.00
91.450.000.000.0094.050.000.000.00
91.500.000.000.0094.100.000.000.00
91.550.000.000.0094.150.000.000.00
91.600.000.000.0094.200.000.000.00
91.650.000.000.0094.250.000.000.00
91.700.000.000.0094.300.000.000.00
91.750.000.000.0094.350.000.000.00
91.800.000.000.0094.400.000.000.00
91.850.000.000.0094.450.000.000.00
91.900.000.000.0094.500.000.000.00
91.950.000.000.00
92.000.000.000.00
92.050.000.000.00
92.100.000.000.00
92.150.000.000.00
92.200.000.000.00
92.250.000.000.00
92.300.000.000.00
92.350.000.000.00
92.400.000.000.00
92.450.000.000.00
92.500.000.000.00
92.550.000.000.00
92.600.000.000.00
92.650.000.000.00
92.700.000.000.00
92.750.000.000.00
92.800.000.000.00
92.850.000.000.00
92.900.000.000.00
92.950.000.000.00
93.000.000.000.00
93.050.000.000.00
93.100.000.000.00
93.150.000.000.00
93.200.000.000.00
93.250.000.000.00
93.300.000.000.00
93.350.000.000.00
93.400.000.000.00
93.450.000.000.00
93.500.000.000.00
93.550.000.000.00
Page 39 Download HTML

Page 15

Stage-Area-Storage for Pond 177P: WQ Infiltration Basin #2

Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
91.002,628093.604,6339,277
91.052,66313293.654,6809,510
91.102,69726693.704,7279,745
91.152,73240293.754,7749,983
91.202,76653993.804,82110,223
91.252,80167993.854,86910,463
91.302,83682093.904,91610,710
91.352,87096293.954,96310,957
91.402,9051,10794.005,01011,206
91.452,9391,25394.055,05311,458
91.502,9741,40194.105,09611,717
91.553,0091,55094.155,13811,967
91.603,0431,70194.205,18112,225
91.653,0781,85494.255,22412,488
91.703,1122,00994.305,26712,748
91.753,1472,16694.355,31013,012
91.803,1822,32494.405,35213,278
91.853,2162,48494.455,39513,547
91.903,2512,64594.505,43813,818
91.953,2852,809
92.003,3202,974
92.053,3573,141
92.103,3953,310
92.153,4323,480
92.203,4693,653
92.253,5073,827
92.303,5444,004
92.353,5814,182
92.403,6194,362
92.453,6564,544
92.503,6944,727
92.553,7314,913
92.603,7685,100
92.653,8065,290
92.703,8435,481
92.753,8805,674
92.803,9185,869
92.853,9556,066
92.903,9926,265
92.954,0306,465
93.004,0676,668
93.054,1146,872
93.104,1617,079
93.154,2087,288
93.204,2567,500
93.254,3037,714
93.304,3507,930
93.354,3978,149
93.404,4448,370
93.454,4918,593
93.504,5398,819
93.554,5869,047
Page 40 Download HTML

APPENDIX C

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Page 42 Download HTML

Area Listing (selected nodes)

Area (sq-ft)CNDescription (subcatchment-numbers)
239,31539>75% Grass cover, Good, HSG A (148S, 149S, 150S)
60,34598Paved parking, HSG A (141S, 143S, 172S)
4,00098Unconnected roofs, HSG A (145S)
236,87930Woods, Good, HSG A (149S)
540,53942TOTAL AREA
Page 43 Download HTML

102 Sams -REV 12-02-25 NOAA 24-hr D 2-Year Rainfall=3.42" Prepared by Haler Consulting Printed 04/12/2025 HydroCAD® 10.20-2h s/n 10351 © 2024 HydroCAD Software Solutions LLC Page 3

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 Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 141S: DA P1 (Impervious) Runoff Area=31,625 sf 100.00% Impervious Runoff Depth=3.19" Flow Length=450' Tc=3.0 min CN=0/98 Runoff=2.34 cfs 8,398 cf Subcatchment 143S: DA P2 (Impervious) Runoff Area=23,470 sf 100.00% Impervious Runoff Depth=3.19" Flow Length=450' Tc=4.9 min CN=0/98 Runoff=1.53 cfs 6,233 cf Subcatchment 145S: DA P5 (4000 SF Roof) Runoff Area=4,000 sf 0.00% Impervious Runoff Depth=3.19" Tc=6.0 min CN=98/0 Runoff=0.24 cfs 1,062 cf Subcatchment 148S: DA P3 (Pervious) Runoff Area=62,973 sf 0.00% Impervious Runoff Depth=0.01" Flow Length=316' Slope=0.0200'/' Tc=13.1 min CN=39/0 Runoff=0.00 cfs 28 cf Subcatchment 149S: DA P0 Pervious Runoff Area=336,250 sf 0.00% Impervious Runoff Depth=0.00" Flow Length=679' Tc=49.8 min CN=33/0 Runoff=0.00 cfs 0 cf Subcatchment 150S: DA P4 (Pervious) Runoff Area=76,971 sf 0.00% Impervious Runoff Depth=0.01" Flow Length=196' Slope=0.0100'/' Tc=14.8 min CN=39/0 Runoff=0.00 cfs 34 cf Subcatchment 172S: DA P6 (Impervious) Runoff Area=5,250 sf 100.00% Impervious Runoff Depth=3.19" Flow Length=150' Tc=1.4 min CN=0/98 Runoff=0.43 cfs 1,394 cf Pond 130P: SUBSURFACE Peak Elev=1.35' Storage=277 cf Inflow=0.24 cfs 1,062 cf Outflow=0.04 cfs 1,062 cf Pond 144P: WQ Infiltration Basin #1 Peak Elev=95.51' Storage=2,258 cf Inflow=2.34 cfs 8,433 cf Discarded=0.33 cfs 8,433 cf Primary=0.00 cfs 0 cf Outflow=0.33 cfs 8,433 cf Pond 149P: WQ Infiltration Basin #2 Peak Elev=92.02' Storage=3,026 cf Inflow=1.53 cfs 6,261 cf Discarded=0.08 cfs 6,261 cf Primary=0.00 cfs 0 cf Outflow=0.08 cfs 6,261 cf Link 147L: POA Inflow=0.43 cfs 1,394 cf Primary=0.43 cfs 1,394 cf Total Runoff Area = 540,539 sf Runoff Volume = 17,150 cf Average Runoff Depth = 0.38" 88.84% Pervious = 480,194 sf 11.16% Impervious = 60,345 sf

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Summary for Subcatchment 141S: DA P1 (Impervious)

Runoff = 2.34 cfs @ 12.11 hrs, Volume=8,398 cf, Depth=3.19"

Routed to Pond 144P : WQ Infiltration Basin #1

8,398 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-Year Rainfall=3.42"

Area (sf) CN Description

31,625 98 Paved parking, HSG A

31,625 98 100.00% Impervious Area

Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)

1.2 100 0.0200 1.42 Sheet Flow, Smooth surfaces n= 0.011 P2= 3.42"

1.8 350 0.0250 3.21 Shallow Concentrated Flow, Paved Kv= 20.3 fps

3.0 450 Total

Subcatchment 141S: DA P1 (Impervious)

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Summary for Subcatchment 143S: DA P2 (Impervious)

Runoff = 1.53 cfs @ 12.13 hrs, Volume=6,233 cf, Depth= 3.19"

Routed to Pond 149P : WQ Infiltration Basin #2

6,233 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-Year Rainfall=3.42"

Area (sf) CN Description

23,470 98 Paved parking, HSG A

23,470 98 100.00% Impervious Area

Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)

0.8 100 0.0500 2.05 Sheet Flow, Smooth surfaces n= 0.011 P2= 3.42"

4.1 350 0.0050 1.44 Shallow Concentrated Flow, Paved Kv= 20.3 fps

4.9 450 Total

Subcatchment 143S: DA P2 (Impervious)

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Summary for Subcatchment 145S: DA P5 (4000 SF Roof)

Runoff = 0.24 cfs @ 12.14 hrs, Volume= 1,062 cf, Depth= 3.19" Routed to Pond 130P : SUBSURFACE

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-Year Rainfall=3.42"

Area (sf)CNDescription
4,00098Unconnected roofs, HSG A
4,00098100.00% Pervious Area
Tc (min)Length (feet)Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)
6.0Direct Entry,

Subcatchment 145S: DA P5 (4000 SF Roof)

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Summary for Subcatchment 148S: DA P3 (Pervious)

Runoff = 0.00 cfs @ 24.01 hrs, Volume= 28 cf, Depth= 0.01" Routed to Pond 149P : WQ Infiltration Basin #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-Year Rainfall=3.42"

Area (sf) CN Description

62,973 39 >75% Grass cover, Good, HSG A

62,973 39 100.00% Pervious Area

Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)

9.5 100 0.0200 0.18 Sheet Flow, Grass: Short n= 0.150 P2= 3.42"

3.6 216 0.0200 0.99 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps

13.1 316 Total

Subcatchment 148S: DA P3 (Pervious)

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Summary for Subcatchment 149S: DA P0 Pervious

Runoff = 0.00 cfs @ 0.00 hrs, Volume= 0 cf, Depth= 0.00" Routed to Link 147L : POA

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-Year Rainfall=3.42"

Area (sf) CN Description

236,879 30 Woods, Good, HSG A

99,371 39 >75% Grass cover, Good, HSG A

336,250 33 Weighted Average

336,250 33 100.00% Pervious Area

Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)

36.2 100 0.0050 0.05 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 3.42" Shallow Concentrated Flow, Woodland Kv= 5.0 fps

13.6 579 0.0200 0.71

49.8 679 Total

Subcatchment 149S: DA P0 Pervious

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Summary for Subcatchment 150S: DA P4 (Pervious)

Runoff = 0.00 cfs @ 24.01 hrs, Volume= 34 cf, Depth= 0.01" Routed to Pond 144P : WQ 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 2-Year Rainfall=3.42"

Area (sf) CN Description

76,971 39 >75% Grass cover, Good, HSG A

76,971 39 100.00% Pervious Area

Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description

12.5 100 0.0100 0.13 Sheet Flow, Grass: Short n= 0.150 P2= 3.42"

2.3 96 0.0100 0.70 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps

14.8 196 Total

Subcatchment 150S: DA P4 (Pervious)

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Summary for Subcatchment 172S: DA P6 (Impervious)

Runoff = 0.43 cfs @ 12.10 hrs, Volume= 1,394 cf, Depth= 3.19" Routed to Link 147L : POA

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-Year Rainfall=3.42"

Area (sf) CN Description

5,250 98 Paved parking, HSG A

5,250 98 100.00% Impervious Area

Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)

0.8 100 0.0500 2.05 Sheet Flow, Smooth surfaces n= 0.011 P2= 3.42"

0.6 50 0.0050 1.44 Shallow Concentrated Flow, Paved Kv= 20.3 fps

1.4 150 Total

Subcatchment 172S: DA P6 (Impervious)

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Page 11

Summary for Pond 130P: SUBSURFACE

Inflow Area = 4,000 sf, 0.00% Impervious, Inflow Depth = 3.19" for 2-Year event Inflow = 0.24 cfs @ 12.14 hrs, Volume= 1,062 cf Outflow = 0.04 cfs @ 11.60 hrs, Volume= 1,062 cf, Atten= 83%, Lag= 0.0 min Discarded = 0.04 cfs @ 11.60 hrs, Volume= 1,062 cf Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 1.35' @ 12.81 hrs Surf.Area= 533 sf Storage= 277 cf Plug-Flow detention time= 41.5 min calculated for 1,062 cf (100% of inflow) Center-of-Mass det. time= 41.5 min (802.1 - 760.5)

VolumeInvertAvail.StorageStorage Description
#1A0.00'765 cf13.00'W x 41.00'L x 5.00'H Field A
2,664 cf Overall - 751 cf Embedded = 1,914 cf x 40.0% Voids
#2A1.00'573 cfADS N-12 30" x 6 Inside #1 Inside= 30.0"W x 30.0"H => 4.90 sf x 20.00'L = 98.0 cf Outside= 36.0"W x 36.0"H => 6.42 sf x 20.00'L = 128.3 cf Row Length Adjustment= -1.00' x 4.90 sf x 3 rows

1,339 cf Total Available Storage

Storage Group A created with Chamber Wizard

DeviceRoutingInvertOutlet Devices
#1Discarded0.00'3.250 in/hr Exfiltration over Surface area

Discarded OutFlow Max=0.04 cfs @ 11.60 hrs HW=0.05' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.04 cfs)

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Page 12

Pond 130P: SUBSURFACE

Inflow Discarded

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Stage-Discharge for Pond 130P: SUBSURFACE

Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
0.000.002.600.04
0.050.042.650.04
0.100.042.700.04
0.150.042.750.04
0.200.042.800.04
0.250.042.850.04
0.300.042.900.04
0.350.042.950.04
0.400.043.000.04
0.450.043.050.04
0.500.043.100.04
0.550.043.150.04
0.600.043.200.04
0.650.043.250.04
0.700.043.300.04
0.750.043.350.04
0.800.043.400.04
0.850.043.450.04
0.900.043.500.04
0.950.043.550.04
1.000.043.600.04
1.050.043.650.04
1.100.043.700.04
1.150.043.750.04
1.200.043.800.04
1.250.043.850.04
1.300.043.900.04
1.350.043.950.04
1.400.044.000.04
1.450.044.050.04
1.500.044.100.04
1.550.044.150.04
1.600.044.200.04
1.650.044.250.04
1.700.044.300.04
1.750.044.350.04
1.800.044.400.04
1.850.044.450.04
1.900.044.500.04
1.950.044.550.04
2.000.044.600.04
2.050.044.650.04
2.100.044.700.04
2.150.044.750.04
2.200.044.800.04
2.250.044.850.04
2.300.044.900.04
2.350.044.950.04
2.400.045.000.04
2.450.04
2.500.04
2.550.04

Page 13

Page 54 Download HTML

Page 14

Stage-Area-Storage for Pond 130P: SUBSURFACE

Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
0.0053302.60533707
0.05533112.65533726
0.10533212.70533745
0.15533322.75533764
0.20533432.80533782
0.25533532.85533801
0.30533642.90533819
0.35533752.95533838
0.40533853.00533856
0.45533963.05533874
0.505331073.10533891
0.555331173.15533909
0.605331283.20533926
0.655331393.25533943
0.705331493.30533960
0.755331603.35533976
0.805331713.40533992
0.855331813.455331,007
0.905331923.505331,022
0.955332033.555331,037
1.005332133.605331,050
1.055332233.655331,063
1.105332313.705331,075
1.155332403.755331,084
1.205332473.805331,092
1.255332553.855331,099
1.305332643.905331,107
1.355332763.955331,116
1.405332894.005331,126
1.455333024.055331,136
1.505333174.105331,147
1.555333324.155331,158
1.605333474.205331,168
1.655333634.255331,179
1.705333794.305331,190
1.755333964.355331,200
1.805334134.405331,211
1.855334304.455331,222
1.905334484.505331,232
1.955334654.555331,243
2.005334834.605331,254
2.055335014.655331,264
2.105335204.705331,275
2.155335384.755331,286
2.205335574.805331,296
2.255335754.855331,307
2.305335944.905331,318
2.355336134.955331,328
2.405336325.005331,339
2.45533651
2.50533669
2.55533688
Page 55 Download HTML

Page 15

Summary for Pond 144P: WQ Infiltration Basin #1

Inflow Area = 108,596 sf, 29.12% Impervious, Inflow Depth = 0.93" for 2-Year event

Inflow = 2.34 cfs @ 12.11 hrs, Volume= 8,433 cf

Outflow = 0.33 cfs @ 12.65 hrs, Volume= 8,433 cf, Atten= 86%, Lag= 32.5 min

Discarded = 0.33 cfs @ 12.65 hrs, Volume= 8,433 cf

Primary = 0.00 cfs @ 0.00 hrs, Volume= 0 cf

Routed to Link 147L : POA

Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs

Peak Elev= 95.51' @ 12.65 hrs Surf.Area= 4,668 sf Storage= 2,258 cf

Plug-Flow detention time= 43.9 min calculated for 8,433 cf (100% of inflow)

Center-of-Mass det. time= 43.9 min ( 802.2 - 758.2 )

VolumeInvertAvail.StorageStorage Description
#195.00'16,706 cfCustom Stage Data (Prismatic) Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
95.004,23100
96.005,0924,6624,662
97.006,0085,55010,212
98.006,9816,49516,706
DeviceRoutingInvertOutlet Devices
#1Primary97.60'15.0" Round Culvert to Subsurface Basin L= 35.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 95.00' / 97.60' S= -0.0743'' Cc= 0.900 n= 0.012 Corrugated PP, smooth interior, Flow Area= 1.23 sf
#2Device 197.00'4.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s)
#3Discarded95.00'3.100 in/hr Exfiltration over Surface area

Discarded OutFlow Max=0.33 cfs @ 12.65 hrs HW=95.51' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.33 cfs)

Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=95.00' (Free Discharge) 1=Culvert to Subsurface Basin (Controls 0.00 cfs) 2=Sharp-Crested Rectangular Weir (Controls 0.00 cfs)

Page 56 Download HTML

Page 16

Pond 144P: WQ Infiltration Basin #1

Page 57 Download HTML

Page 17

Stage-Discharge for Pond 144P: WQ Infiltration Basin #1

Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)
95.000.000.000.0097.600.470.470.00
95.050.310.310.0097.650.490.480.01
95.100.310.310.0097.700.530.480.05
95.150.310.310.0097.750.590.480.11
95.200.320.320.0097.800.680.490.19
95.250.320.320.0097.850.790.490.30
95.300.320.320.0097.900.920.490.42
95.350.330.330.0097.951.060.500.57
95.400.330.330.0098.001.230.500.73
95.450.330.330.0098.051.410.500.91
95.500.330.330.0098.101.600.501.10
95.550.340.340.0098.151.810.501.31
95.600.340.340.0098.202.040.501.54
95.650.340.340.0098.252.270.501.77
95.700.350.350.0098.302.520.502.01
95.750.350.350.0098.352.770.502.27
95.800.350.350.0098.403.030.502.53
95.850.360.360.0098.453.290.502.79
95.900.360.360.0098.503.560.503.06
95.950.360.360.0098.553.820.503.32
96.000.370.370.0098.604.080.503.58
96.050.370.370.0098.654.340.503.84
96.100.370.370.0098.704.590.504.08
96.150.380.380.0098.754.810.504.31
96.200.380.380.0098.805.020.504.52
96.250.380.380.0098.855.170.504.67
96.300.390.390.00
96.350.390.390.00
96.400.390.390.00
96.450.390.390.00
96.500.400.400.00
96.550.400.400.00
96.600.400.400.00
96.650.410.410.00
96.700.410.410.00
96.750.410.410.00
96.800.420.420.00
96.850.420.420.00
96.900.420.420.00
96.950.430.430.00
97.000.430.430.00
97.050.430.430.00
97.100.440.440.00
97.150.440.440.00
97.200.450.450.00
97.250.450.450.00
97.300.450.450.00
97.350.460.460.00
97.400.460.460.00
97.450.460.460.00
97.500.470.470.00
97.550.470.470.00
Page 58 Download HTML

Page 18

Stage-Area-Storage for Pond 144P: WQ Infiltration Basin #1

Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
95.004,231097.606,59213,991
95.054,27421397.656,64014,322
95.104,31742797.706,68914,655
95.154,36064497.756,73814,991
95.204,40386397.806,78615,329
95.254,4461,08597.856,83515,670
95.304,4891,30897.906,88416,013
95.354,5321,53497.956,93216,358
95.404,5751,76198.006,98116,706
95.454,6181,99198.056,98116,706
95.504,6622,22398.106,98116,706
95.554,7052,45798.156,98116,706
95.604,7482,69498.206,98116,706
95.654,7912,93298.256,98116,706
95.704,8343,17398.306,98116,706
95.754,8773,41598.356,98116,706
95.804,9203,66098.406,98116,706
95.854,9633,90798.456,98116,706
95.905,0064,15798.506,98116,706
95.955,0494,40898.556,98116,706
96.005,0924,66298.606,98116,706
96.055,1384,91798.656,98116,706
96.105,1845,17598.706,98116,706
96.155,2295,43698.756,98116,706
96.205,2755,69898.806,98116,706
96.255,3215,96398.856,98116,706
96.305,3676,230
96.355,4136,500
96.405,4586,772
96.455,5047,046
96.505,5507,322
96.555,5967,601
96.605,6427,882
96.655,6878,165
96.705,7338,450
96.755,7798,738
96.805,8259,028
96.855,8719,321
96.905,9169,615
96.955,9629,912
97.006,00810,212
97.056,05710,513
97.106,10510,817
97.156,15411,124
97.206,20311,433
97.256,25111,744
97.306,30012,058
97.356,34912,374
97.406,39712,693
97.456,44613,014
97.506,49513,337
97.556,54313,663
Page 59 Download HTML

Summary for Pond 149P: WQ Infiltration Basin #2

Inflow Area = 86,443 sf, 27.15% Impervious, Inflow Depth = 0.87" for 2-Year event

Inflow = 1.53 cfs @ 12.13 hrs, Volume= 6,261 cf

Outflow = 0.08 cfs @ 14.36 hrs, Volume= 6,261 cf, Atten= 95%, Lag= 133.9 min

Discarded = 0.08 cfs @ 14.36 hrs, Volume= 6,261 cf

Primary = 0.00 cfs @ 0.00 hrs, Volume= 0 cf

Routed to Link 147L : POA

Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs

Peak Elev= 92.02' @ 14.36 hrs Surf.Area= 3,332 sf Storage= 3,026 cf

Plug-Flow detention time= 342.1 min calculated for 6,260 cf (100% of inflow)

Center-of-Mass det. time= 342.1 min ( 1,103.5 - 761.4 )

VolumeInvertAvail.StorageStorage Description
#191.00'13,818 cfCustom Stage Data (Prismatic) Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
91.002,62800
92.003,3202,9742,974
93.004,0673,6946,668
94.005,0104,53911,206
94.505,4382,61213,818
DeviceRoutingInvertOutlet Devices
#1Primary93.80'6.0" Round Culvert to Subsurface Basin L= 35.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 92.00' / 93.80' S= -0.0514'' Cc= 0.900 n= 0.012 Corrugated PP, smooth interior, Flow Area= 0.20 sf
#2Device 193.00'4.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s)
#3Discarded91.00'1.050 in/hr Exfiltration over Surface area

Discarded OutFlow Max=0.08 cfs @ 14.36 hrs HW=92.02' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.08 cfs)

Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=91.00' (Free Discharge) 1=Culvert to Subsurface Basin (Controls 0.00 cfs) 2=Sharp-Crested Rectangular Weir (Controls 0.00 cfs)

Page 60 Download HTML

Pond 149P: WQ Infiltration Basin #2

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)

Inflow Outflow Discarded Primary

Page 61 Download HTML

Stage-Discharge for Pond 149P: WQ Infiltration Basin #2

Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)
91.000.000.000.0093.600.110.110.00
91.050.060.060.0093.650.110.110.00
91.100.070.070.0093.700.110.110.00
91.150.070.070.0093.750.120.120.00
91.200.070.070.0093.800.120.120.00
91.250.070.070.0093.850.130.120.01
91.300.070.070.0093.900.150.120.03
91.350.070.070.0093.950.190.120.07
91.400.070.070.0094.000.230.120.11
91.450.070.070.0094.050.290.120.17
91.500.070.070.0094.100.350.120.23
91.550.070.070.0094.150.420.120.30
91.600.070.070.0094.200.490.130.36
91.650.070.070.0094.250.550.130.43
91.700.080.080.0094.300.600.130.47
91.750.080.080.0094.350.650.130.52
91.800.080.080.0094.400.690.130.56
91.850.080.080.0094.450.730.130.60
91.900.080.080.0094.500.770.130.63
91.950.080.080.00
92.000.080.080.00
92.050.080.080.00
92.100.080.080.00
92.150.080.080.00
92.200.080.080.00
92.250.090.090.00
92.300.090.090.00
92.350.090.090.00
92.400.090.090.00
92.450.090.090.00
92.500.090.090.00
92.550.090.090.00
92.600.090.090.00
92.650.090.090.00
92.700.090.090.00
92.750.090.090.00
92.800.100.100.00
92.850.100.100.00
92.900.100.100.00
92.950.100.100.00
93.000.100.100.00
93.050.100.100.00
93.100.100.100.00
93.150.100.100.00
93.200.100.100.00
93.250.100.100.00
93.300.110.110.00
93.350.110.110.00
93.400.110.110.00
93.450.110.110.00
93.500.110.110.00
93.550.110.110.00
Page 62 Download HTML

Stage-Area-Storage for Pond 149P: WQ Infiltration Basin #2

Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
91.002,628093.604,6339,277
91.052,66313293.654,6809,510
91.102,69726693.704,7279,745
91.152,73240293.754,7749,983
91.202,76653993.804,82110,223
91.252,80167993.854,86910,463
91.302,83682093.904,91610,710
91.352,87096293.954,96310,957
91.402,9051,10794.005,01011,206
91.452,9391,25394.055,05311,458
91.502,9741,40194.105,09611,717
91.553,0091,55094.155,13811,967
91.603,0431,70194.205,18112,225
91.653,0781,85494.255,22412,488
91.703,1122,00994.305,26712,748
91.753,1472,16694.355,31013,012
91.803,1822,32494.405,35213,278
91.853,2162,48494.455,39513,547
91.903,2512,64594.505,43813,818
91.953,2852,809
92.003,3202,974
92.053,3573,141
92.103,3953,310
92.153,4323,480
92.203,4693,653
92.253,5073,827
92.303,5444,004
92.353,5814,182
92.403,6194,362
92.453,6564,544
92.503,6944,727
92.553,7314,913
92.603,7685,100
92.653,8065,290
92.703,8435,481
92.753,8805,674
92.803,9185,869
92.853,9556,066
92.903,9926,265
92.954,0306,465
93.004,0676,668
93.054,1146,872
93.104,1617,079
93.154,2087,288
93.204,2567,500
93.254,3037,714
93.304,3507,930
93.354,3978,149
93.404,4448,370
93.454,4918,593
93.504,5398,819
93.554,5869,047
Page 63 Download HTML

Page 23

Summary for Link 147L: POA

Inflow Area = 536,539 sf, 11.25% Impervious, Inflow Depth = 0.03" for 2-Year event Inflow = 0.43 cfs @ 12.10 hrs, Volume= 1,394 cf Primary = 0.43 cfs @ 12.10 hrs, Volume= 1,394 cf, Atten= 0%, Lag= 0.0 min

Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs

Link 147L: POA

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)

Page 64 Download HTML

102 Sams -REV 12-02-25 NOAA 24-hr D 10-Year Rainfall=5.38" Prepared by Haler Consulting Printed 04/12/2025 HydroCAD® 10.20-2h s/n 10351 © 2024 HydroCAD Software Solutions LLC Page 24

Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 141S: DA P1 (Impervious) Runoff Area=31,625 sf 100.00% Impervious Runoff Depth=5.14" Flow Length=450' Tc=3.0 min CN=0/98 Runoff=3.70 cfs 13,553 cf Subcatchment 143S: DA P2 (Impervious) Runoff Area=23,470 sf 100.00% Impervious Runoff Depth=5.14" Flow Length=450' Tc=4.9 min CN=0/98 Runoff=2.42 cfs 10,058 cf Subcatchment 145S: DA P5 (4000 SF Roof) Runoff Area=4,000 sf 0.00% Impervious Runoff Depth=5.14" Tc=6.0 min CN=98/0 Runoff=0.38 cfs 1,714 cf Subcatchment 148S: DA P3 (Pervious) Runoff Area=62,973 sf 0.00% Impervious Runoff Depth=0.28" Flow Length=316' Slope=0.0200'/' Tc=13.1 min CN=39/0 Runoff=0.07 cfs 1,487 cf Subcatchment 149S: DA P0 Pervious Runoff Area=336,250 sf 0.00% Impervious Runoff Depth=0.08" Flow Length=679' Tc=49.8 min CN=33/0 Runoff=0.06 cfs 2,256 cf Subcatchment 150S: DA P4 (Pervious) Runoff Area=76,971 sf 0.00% Impervious Runoff Depth=0.28" Flow Length=196' Slope=0.0100'/' Tc=14.8 min CN=39/0 Runoff=0.09 cfs 1,818 cf Subcatchment 172S: DA P6 (Impervious) Runoff Area=5,250 sf 100.00% Impervious Runoff Depth=5.14" Flow Length=150' Tc=1.4 min CN=0/98 Runoff=0.67 cfs 2,250 cf Pond 130P: SUBSURFACE Peak Elevation=2.25' Storage=576 cfs Runoff=0.38 cfs 1,714 cf Outflow=0.04 cfs 1,714 cf Pond 144P: WQ Infiltration Basin #1 Peak Elevation=96.01' Storage=4,717 cfs Runoff=3.70 cfs 15,371 cf Discarded=0.37 cfs Runoff=0.37 cfs 15,371 cf Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff

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Summary for Subcatchment 141S: DA P1 (Impervious)

Runoff = 3.70 cfs @ 12.11 hrs, Volume= 13,553 cf, Depth= 5.14" Routed to Pond 144P : WQ 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-Year Rainfall=5.38"

Area (sf) CN Description

31,625 98 Paved parking, HSG A

31,625 98 100.00% Impervious Area

Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)

1.2 100 0.0200 1.42 Sheet Flow, Smooth surfaces n= 0.011 P2= 3.42"

1.8 350 0.0250 3.21 Shallow Concentrated Flow, Paved Kv= 20.3 fps

3.0 450 Total

Subcatchment 141S: DA P1 (Impervious)

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Summary for Subcatchment 143S: DA P2 (Impervious)

Runoff = 2.42 cfs @ 12.13 hrs, Volume=10,058 cf, Depth= 5.14"

Routed to Pond 149P : WQ Infiltration Basin #2

10,058 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-Year Rainfall=5.38"

Area (sf) CN Description

23,470 98 Paved parking, HSG A

23,470 98 100.00% Impervious Area

Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)

0.8 100 0.0500 2.05 Sheet Flow, Smooth surfaces n= 0.011 P2= 3.42"

4.1 350 0.0050 1.44 Shallow Concentrated Flow, Paved Kv= 20.3 fps

4.9 450 Total

Subcatchment 143S: DA P2 (Impervious)

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Summary for Subcatchment 145S: DA P5 (4000 SF Roof)

Runoff = 0.38 cfs @ 12.14 hrs, Volume= 1,714 cf, Depth= 5.14" Routed to Pond 130P : SUBSURFACE

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-Year Rainfall=5.38"

Area (sf)CNDescription
4,00098Unconnected roofs, HSG A
4,00098100.00% Pervious Area
Tc (min)Length (feet)Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)
6.0Direct Entry,

Subcatchment 145S: DA P5 (4000 SF Roof)

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Summary for Subcatchment 148S: DA P3 (Pervious)

Runoff = 0.07 cfs @ 13.04 hrs, Volume= 1,487 cf, Depth= 0.28" Routed to Pond 149P : WQ Infiltration Basin #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-Year Rainfall=5.38"

Area (sf) CN Description

62,973 39 >75% Grass cover, Good, HSG A

62,973 39 100.00% Pervious Area

Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description

9.5 100 0.0200 0.18 Sheet Flow, Grass: Short n= 0.150 P2= 3.42"

3.6 216 0.0200 0.99 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps

13.1 316 Total

Subcatchment 148S: DA P3 (Pervious)

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Summary for Subcatchment 149S: DA P0 Pervious

Runoff = 0.06 cfs @ 17.81 hrs, Volume= Routed to Link 147L : POA 2,256 cf, Depth= 0.08"

2,256 cf, Depth= 0.08"

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-Year Rainfall=5.38"

Area (sf) CN Description

236,879 30 Woods, Good, HSG A

99,371 39 >75% Grass cover, Good, HSG A

336,250 33 Weighted Average

336,250 33 100.00% Pervious Area

Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)

36.2 100 0.0050 0.05 Sheet Flow, Woods: Light underbrush n=0.400 P2=3.42" Shallow Concentrated Flow, Woodland Kv=5.0 fps

13.6 579 0.0200 0.71

49.8 679 Total

Subcatchment 149S: DA P0 Pervious

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Summary for Subcatchment 150S: DA P4 (Pervious)

Runoff = 0.09 cfs @ 13.09 hrs, Volume= 1,818 cf, Depth= 0.28" Routed to Pond 144P : WQ 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-Year Rainfall=5.38"

Area (sf) CN Description

76,971 39 >75% Grass cover, Good, HSG A

76,971 39 100.00% Pervious Area

Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description

12.5 100 0.0100 0.13 Sheet Flow, Grass: Short n= 0.150 P2= 3.42"

2.3 96 0.0100 0.70 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps

14.8 196 Total

Subcatchment 150S: DA P4 (Pervious)

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Summary for Subcatchment 172S: DA P6 (Impervious)

Runoff = 0.67 cfs @ 12.10 hrs, Volume= 2,250 cf, Depth= 5.14" Routed to Link 147L : POA

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-Year Rainfall=5.38"

Area (sf) CN Description

5,250 98 Paved parking, HSG A

5,250 98 100.00% Impervious Area

Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)

0.8 100 0.0500 2.05 Sheet Flow, Smooth surfaces n= 0.011 P2= 3.42"

0.6 50 0.0050 1.44 Shallow Concentrated Flow, Paved Kv= 20.3 fps

1.4 150 Total

Subcatchment 172S: DA P6 (Impervious)

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Page 32

Summary for Pond 130P: SUBSURFACE

Inflow Area = 4,000 sf, 0.00% Impervious, Inflow Depth = 5.14" for 10-Year event Inflow = 0.38 cfs @ 12.14 hrs, Volume= 1,714 cf Outflow = 0.04 cfs @ 11.14 hrs, Volume= 1,714 cf, Atten= 90%, Lag= 0.0 min Discarded = 0.04 cfs @ 11.14 hrs, Volume= 1,714 cf Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 2.25' @ 13.27 hrs Surf.Area= 533 sf Storage= 576 cf Plug-Flow detention time= 97.6 min calculated for 1,714 cf (100% of inflow) Center-of-Mass det. time= 97.6 min (849.3 - 751.7)

VolumeInvertAvail.StorageStorage Description
#1A0.00'765 cf13.00'W x 41.00'L x 5.00'H Field A
2,664 cf Overall - 751 cf Embedded = 1,914 cf x 40.0% Voids
#2A1.00'573 cfADS N-12 30" x 6 Inside #1 Inside= 30.0"W x 30.0"H => 4.90 sf x 20.00'L = 98.0 cf Outside= 36.0"W x 36.0"H => 6.42 sf x 20.00'L = 128.3 cf Row Length Adjustment= -1.00' x 4.90 sf x 3 rows

1,339 cf Total Available Storage

Storage Group A created with Chamber Wizard

DeviceRoutingInvertOutlet Devices
#1Discarded0.00'3.250 in/hr Exfiltration over Surface area

Discarded OutFlow Max=0.04 cfs @ 11.14 hrs HW=0.05' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.04 cfs)

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Pond 130P: SUBSURFACE

Inflow Discarded

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Stage-Discharge for Pond 130P: SUBSURFACE

Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
0.000.002.600.04
0.050.042.650.04
0.100.042.700.04
0.150.042.750.04
0.200.042.800.04
0.250.042.850.04
0.300.042.900.04
0.350.042.950.04
0.400.043.000.04
0.450.043.050.04
0.500.043.100.04
0.550.043.150.04
0.600.043.200.04
0.650.043.250.04
0.700.043.300.04
0.750.043.350.04
0.800.043.400.04
0.850.043.450.04
0.900.043.500.04
0.950.043.550.04
1.000.043.600.04
1.050.043.650.04
1.100.043.700.04
1.150.043.750.04
1.200.043.800.04
1.250.043.850.04
1.300.043.900.04
1.350.043.950.04
1.400.044.000.04
1.450.044.050.04
1.500.044.100.04
1.550.044.150.04
1.600.044.200.04
1.650.044.250.04
1.700.044.300.04
1.750.044.350.04
1.800.044.400.04
1.850.044.450.04
1.900.044.500.04
1.950.044.550.04
2.000.044.600.04
2.050.044.650.04
2.100.044.700.04
2.150.044.750.04
2.200.044.800.04
2.250.044.850.04
2.300.044.900.04
2.350.044.950.04
2.400.045.000.04
2.450.04
2.500.04
2.550.04

Page 34

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Page 35

Stage-Area-Storage for Pond 130P: SUBSURFACE

Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
0.0053302.60533707
0.05533112.65533726
0.10533212.70533745
0.15533322.75533764
0.20533432.80533782
0.25533532.85533801
0.30533642.90533819
0.35533752.95533838
0.40533853.00533856
0.45533963.05533874
0.505331073.10533891
0.555331173.15533909
0.605331283.20533926
0.655331393.25533943
0.705331493.30533960
0.755331603.35533976
0.805331713.40533992
0.855331813.455331,007
0.905331923.505331,022
0.955332033.555331,037
1.005332133.605331,050
1.055332233.655331,063
1.105332313.705331,075
1.155332403.755331,084
1.205332473.805331,092
1.255332553.855331,099
1.305332643.905331,107
1.355332763.955331,116
1.405332894.005331,126
1.455333024.055331,136
1.505333174.105331,147
1.555333324.155331,158
1.605333474.205331,168
1.655333634.255331,179
1.705333794.305331,190
1.755333964.355331,200
1.805334134.405331,211
1.855334304.455331,222
1.905334484.505331,232
1.955334654.555331,243
2.005334834.605331,254
2.055335014.655331,264
2.105335204.705331,275
2.155335384.755331,286
2.205335574.805331,296
2.255335754.855331,307
2.305335944.905331,318
2.355336134.955331,328
2.405336325.005331,339
2.45533651
2.50533669
2.55533688
Page 76 Download HTML

Summary for Pond 144P: WQ Infiltration Basin #1

Inflow Area =108,596 sf,29.12% Impervious,Inflow Depth = 1.70" for 10-Year event
Inflow =3.70 cfs @12.11 hrs,15,371 cf
Outflow =0.37 cfs @13.34 hrs,15,371 cf, Atten= 90%, Lag= 73.5 min
Discarded =0.37 cfs @13.34 hrs,15,371 cf
Primary =0.00 cfs @0.00 hrs,0 cf
Routed to Link 147L : POA

Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 96.01' @ 13.34 hrs Surf.Area= 5,102 sf Storage= 4,717 cf Plug-Flow detention time= 98.2 min calculated for 15,369 cf (100% of inflow) Center-of-Mass det. time= 98.2 min ( 878.4 - 780.2 )

VolumeInvertAvail.StorageStorage Description
#195.00'16,706 cfCustom Stage Data (Prismatic) Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
95.004,23100
96.005,0924,6624,662
97.006,0085,55010,212
98.006,9816,49516,706
DeviceRoutingInvertOutlet Devices
#1Primary97.60'15.0" Round Culvert to Subsurface Basin L= 35.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 95.00' / 97.60' S= -0.0743'' Cc= 0.900 n= 0.012 Corrugated PP, smooth interior, Flow Area= 1.23 sf
#2Device 197.00'4.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s)
#3Discarded95.00'3.100 in/hr Exfiltration over Surface area

Discarded OutFlow Max=0.37 cfs @ 13.34 hrs HW=96.01' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.37 cfs)

Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=95.00' (Free Discharge) 1=Culvert to Subsurface Basin (Controls 0.00 cfs) 2=Sharp-Crested Rectangular Weir (Controls 0.00 cfs)

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Pond 144P: WQ Infiltration Basin #1

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Page 38

Stage-Discharge for Pond 144P: WQ Infiltration Basin #1

Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)
95.000.000.000.0097.600.470.470.00
95.050.310.310.0097.650.490.480.01
95.100.310.310.0097.700.530.480.05
95.150.310.310.0097.750.590.480.11
95.200.320.320.0097.800.680.490.19
95.250.320.320.0097.850.790.490.30
95.300.320.320.0097.900.920.490.42
95.350.330.330.0097.951.060.500.57
95.400.330.330.0098.001.230.500.73
95.450.330.330.0098.051.410.500.91
95.500.330.330.0098.101.600.501.10
95.550.340.340.0098.151.810.501.31
95.600.340.340.0098.202.040.501.54
95.650.340.340.0098.252.270.501.77
95.700.350.350.0098.302.520.502.01
95.750.350.350.0098.352.770.502.27
95.800.350.350.0098.403.030.502.53
95.850.360.360.0098.453.290.502.79
95.900.360.360.0098.503.560.503.06
95.950.360.360.0098.553.820.503.32
96.000.370.370.0098.604.080.503.58
96.050.370.370.0098.654.340.503.84
96.100.370.370.0098.704.590.504.08
96.150.380.380.0098.754.810.504.31
96.200.380.380.0098.805.020.504.52
96.250.380.380.0098.855.170.504.67
96.300.390.390.00
96.350.390.390.00
96.400.390.390.00
96.450.390.390.00
96.500.400.400.00
96.550.400.400.00
96.600.400.400.00
96.650.410.410.00
96.700.410.410.00
96.750.410.410.00
96.800.420.420.00
96.850.420.420.00
96.900.420.420.00
96.950.430.430.00
97.000.430.430.00
97.050.430.430.00
97.100.440.440.00
97.150.440.440.00
97.200.450.450.00
97.250.450.450.00
97.300.450.450.00
97.350.460.460.00
97.400.460.460.00
97.450.460.460.00
97.500.470.470.00
97.550.470.470.00
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Page 39

Stage-Area-Storage for Pond 144P: WQ Infiltration Basin #1

Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
95.004,231097.606,59213,991
95.054,27421397.656,64014,322
95.104,31742797.706,68914,655
95.154,36064497.756,73814,991
95.204,40386397.806,78615,329
95.254,4461,08597.856,83515,670
95.304,4891,30897.906,88416,013
95.354,5321,53497.956,93216,358
95.404,5751,76198.006,98116,706
95.454,6181,99198.056,98116,706
95.504,6622,22398.106,98116,706
95.554,7052,45798.156,98116,706
95.604,7482,69498.206,98116,706
95.654,7912,93298.256,98116,706
95.704,8343,17398.306,98116,706
95.754,8773,41598.356,98116,706
95.804,9203,66098.406,98116,706
95.854,9633,90798.456,98116,706
95.905,0064,15798.506,98116,706
95.955,0494,40898.556,98116,706
96.005,0924,66298.606,98116,706
96.055,1384,91798.656,98116,706
96.105,1845,17598.706,98116,706
96.155,2295,43698.756,98116,706
96.205,2755,69898.806,98116,706
96.255,3215,96398.856,98116,706
96.305,3676,230
96.355,4136,500
96.405,4586,772
96.455,5047,046
96.505,5507,322
96.555,5967,601
96.605,6427,882
96.655,6878,165
96.705,7338,450
96.755,7798,738
96.805,8259,028
96.855,8719,321
96.905,9169,615
96.955,9629,912
97.006,00810,212
97.056,05710,513
97.106,10510,817
97.156,15411,124
97.206,20311,433
97.256,25111,744
97.306,30012,058
97.356,34912,374
97.406,39712,693
97.456,44613,014
97.506,49513,337
97.556,54313,663
Page 80 Download HTML

Summary for Pond 149P: WQ Infiltration Basin #2

Inflow Area = 86,443 sf, 27.15% Impervious, Inflow Depth = 1.60" for 10-Year event Inflow = 2.42 cfs @ 12.13 hrs, Volume= 11,545 cf Outflow = 0.10 cfs @ 17.18 hrs, Volume= 11,545 cf, Atten= 96%, Lag= 303.1 min Discarded = 0.10 cfs @ 17.18 hrs, Volume= 11,545 cf Primary = 0.00 cfs @ 0.00 hrs, Volume= 0 cf Routed to Link 147L : POA Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 92.89' @ 17.18 hrs Surf.Area= 3,987 sf Storage= 6,236 cf Plug-Flow detention time= 647.4 min calculated for 11,545 cf (100% of inflow) Center-of-Mass det. time= 647.4 min (1,432.8 - 785.4 )

VolumeInvertAvail.StorageStorage Description
#191.00'13,818 cfCustom Stage Data (Prismatic) Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
91.002,62800
92.003,3202,9742,974
93.004,0673,6946,668
94.005,0104,53911,206
94.505,4382,61213,818
DeviceRoutingInvertOutlet Devices
#1Primary93.80'6.0" Round Culvert to Subsurface Basin L= 35.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 92.00' / 93.80' S= -0.0514'' Cc= 0.900 n= 0.012 Corrugated PP, smooth interior, Flow Area= 0.20 sf
#2Device 193.00'4.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s)
#3Discarded91.00'1.050 in/hr Exfiltration over Surface area

Discarded OutFlow Max=0.10 cfs @ 17.18 hrs HW=92.89' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.10 cfs)

Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=91.00' (Free Discharge) 1=Culvert to Subsurface Basin (Controls 0.00 cfs) 2=Sharp-Crested Rectangular Weir (Controls 0.00 cfs)

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Page 41

Pond 149P: WQ Infiltration Basin #2

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)

Inflow Outflow Discarded Primary

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Stage-Discharge for Pond 149P: WQ Infiltration Basin #2

Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)
91.000.000.000.0093.600.110.110.00
91.050.060.060.0093.650.110.110.00
91.100.070.070.0093.700.110.110.00
91.150.070.070.0093.750.120.120.00
91.200.070.070.0093.800.120.120.00
91.250.070.070.0093.850.130.120.01
91.300.070.070.0093.900.150.120.03
91.350.070.070.0093.950.190.120.07
91.400.070.070.0094.000.230.120.11
91.450.070.070.0094.050.290.120.17
91.500.070.070.0094.100.350.120.23
91.550.070.070.0094.150.420.120.30
91.600.070.070.0094.200.490.130.36
91.650.070.070.0094.250.550.130.43
91.700.080.080.0094.300.600.130.47
91.750.080.080.0094.350.650.130.52
91.800.080.080.0094.400.690.130.56
91.850.080.080.0094.450.730.130.60
91.900.080.080.0094.500.770.130.63
91.950.080.080.00
92.000.080.080.00
92.050.080.080.00
92.100.080.080.00
92.150.080.080.00
92.200.080.080.00
92.250.090.090.00
92.300.090.090.00
92.350.090.090.00
92.400.090.090.00
92.450.090.090.00
92.500.090.090.00
92.550.090.090.00
92.600.090.090.00
92.650.090.090.00
92.700.090.090.00
92.750.090.090.00
92.800.100.100.00
92.850.100.100.00
92.900.100.100.00
92.950.100.100.00
93.000.100.100.00
93.050.100.100.00
93.100.100.100.00
93.150.100.100.00
93.200.100.100.00
93.250.100.100.00
93.300.110.110.00
93.350.110.110.00
93.400.110.110.00
93.450.110.110.00
93.500.110.110.00
93.550.110.110.00
Page 83 Download HTML

Page 43

Stage-Area-Storage for Pond 149P: WQ Infiltration Basin #2

Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
91.002,628093.604,6339,271
91.052,66313293.654,6809,510
91.102,69726693.704,7279,745
91.152,73240293.754,7749,983
91.202,76653993.804,82110,223
91.252,80167993.854,86910,468
91.302,83682093.904,91610,710
91.352,87096293.954,96310,953
91.402,9051,10794.005,01011,200
91.452,9391,25394.055,05311,458
91.502,9741,40194.105,09611,717
91.553,0091,55094.155,13811,967
91.603,0431,70194.205,18112,223
91.653,0781,85494.255,22412,488
91.703,1122,00994.305,26712,748
91.753,1472,16694.355,31013,012
91.803,1822,32494.405,35213,278
91.853,2162,48494.455,39513,547
91.903,2512,64594.505,43813,818
91.953,2852,809
92.003,3202,974
92.053,3573,141
92.103,3953,310
92.153,4323,480
92.203,4693,653
92.253,5073,827
92.303,5444,004
92.353,5814,182
92.403,6194,362
92.453,6564,544
92.503,6944,727
92.553,7314,913
92.603,7685,100
92.653,8065,290
92.703,8435,481
92.753,8805,674
92.803,9185,869
92.853,9556,066
92.903,9926,265
92.954,0306,465
93.004,0676,668
93.054,1146,872
93.104,1617,079
93.154,2087,288
93.204,2567,500
93.254,3037,714
93.304,3507,930
93.354,3978,149
93.404,4448,370
93.454,4918,593
93.504,5398,819
93.554,5869,047
Page 84 Download HTML

Page 44

Summary for Link 147L: POA

Inflow Area = 536,539 sf, 11.25% Impervious, Inflow Depth = 0.10" for 10-Year event Inflow = 0.67 cfs @ 12.10 hrs, Volume= 4,506 cf Primary = 0.67 cfs @ 12.10 hrs, Volume= 4,506 cf, Atten=0%, Lag=0.0 min

Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs

Link 147L: POA

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102 Sams -REV 12-02-25 NOAA 24-hr D 100-Year Rainfall=9.48" Prepared by Haler Consulting Printed 04/12/2025 HydroCAD® 10.20-2h s/n 10351 © 2024 HydroCAD Software Solutions LLC Page 45

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 Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 141S: DA P1 (Impervious) Runoff Area=31,625 sf 100.00% Impervious Runoff Depth=9.24" Flow Length=450' Tc=3.0 min CN=0/98 Runoff=6.54 cfs 24,350 cf Subcatchment 143S: DA P2 (Impervious) Runoff Area=23,470 sf 100.00% Impervious Runoff Depth=9.24" Flow Length=450' Tc=4.9 min CN=0/98 Runoff=4.27 cfs 18,071 cf Subcatchment 145S: DA P5 (4000 SF Roof) Runoff Area=4,000 sf 0.00% Impervious Runoff Depth=9.24" Tc=6.0 min CN=98/0 Runoff=0.68 cfs 3,080 cf Subcatchment 148S: DA P3 (Pervious) Runoff Area=62,973 sf 0.00% Impervious Runoff Depth=1.83" Flow Length=316' Slope=0.0200 /' Tc=13.1 min CN=39/0 Runoff=1.31 cfs 9,627 cf Subcatchment 149S: DA P0 Pervious Runoff Area=336,250 sf 0.00% Impervious Runoff Depth=1.14" Flow Length=679' Tc=49.8 min CN=33/0 Runoff=1.65 cfs 31,994 cf Subcatchment 150S: DA P4 (Pervious) Runoff Area=76,971 sf 0.00% Impervious Runoff Depth=1.83" Flow Length=196' Slope=0.0100 /' Tc=14.8 min CN=39/0 Runoff=1.50 cfs 11,767 cf Subcatchment 172S: DA P6 (Impervious) Runoff Area=5,250 sf 100.00% Impervious Runoff Depth=9.24" Flow Length=150' Tc=1.4 min CN=0/98 Runoff=1.19 cfs 4,042 cf Pond 130P: SUBSURFACE Peak Elevation=4.98' Storage=1,335 cfs Runoff=0.68 cfs 3,080 cf Outflow=0.04 cfs 3,080 cf Pond 144P: WQ Infiltration Basin #1 Peak Elevation=97.79' Storage=15,241 cfs Runoff=7.21 cfs 36,117 cf Discarded=0.49 cfs 34,901 cf Primary=0.17 cfs 1,215 cfs Outflow=0.66 cfs 36,117 cf Pond 149P: WQ Infiltration Basin #2 Peak Elevation=94.41' Storage=13,337 cfs Runoff=5.06 cfs 27,698 cf Discarded=0.13 cfs 18,586 cfs Primary=0.57 cfs 9,111 cfs Outflow=0.70 cfs 27,698 cf Link 147L: POA Runoff Volume = 102,930 cfs Average Runoff Depth = 2.29" 88.84% Pervious = 480,194 cfs Runoff Depth = 11.16% Impervious = 60,345 cfs

Page 86 Download HTML

Summary for Subcatchment 141S: DA P1 (Impervious)

Runoff = 6.54 cfs @ 12.11 hrs, Volume= 24,350 cf, Depth= 9.24" Routed to Pond 144P : WQ 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-Year Rainfall=9.48"

Area (sf) CN Description

31,625 98 Paved parking, HSG A

31,625 98 100.00% Impervious Area

Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)

1.2 100 0.0200 1.42 Sheet Flow, Smooth surfaces n= 0.011 P2= 3.42"

1.8 350 0.0250 3.21 Shallow Concentrated Flow, Paved Kv= 20.3 fps

3.0 450 Total

Subcatchment 141S: DA P1 (Impervious)

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Summary for Subcatchment 143S: DA P2 (Impervious)

Runoff = 4.27 cfs @ 12.13 hrs, Volume=18,071 cf, Depth= 9.24"

Routed to Pond 149P : WQ Infiltration Basin #2

18,071 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-Year Rainfall=9.48"

Area (sf) CN Description

23,470 98 Paved parking, HSG A

23,470 98 100.00% Impervious Area

Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)

0.8 100 0.0500 2.05 Sheet Flow, Smooth surfaces n= 0.011 P2= 3.42"

4.1 350 0.0050 1.44 Shallow Concentrated Flow, Paved Kv= 20.3 fps

4.9 450 Total

Subcatchment 143S: DA P2 (Impervious)

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Summary for Subcatchment 145S: DA P5 (4000 SF Roof)

Runoff = 0.68 cfs @ 12.14 hrs, Volume= 3,080 cf, Depth= 9.24" Routed to Pond 130P : SUBSURFACE

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-Year Rainfall=9.48"

Area (sf)CNDescription
4,00098Unconnected roofs, HSG A
4,00098100.00% Pervious Area
Tc (min)Length (feet)Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)
6.0Direct Entry,

Subcatchment 145S: DA P5 (4000 SF Roof)

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Page 49

Summary for Subcatchment 148S: DA P3 (Pervious)

Runoff = 1.31 cfs @ 12.26 hrs, Volume=9,627 cf, Depth= 1.83"

Routed to Pond 149P : WQ Infiltration Basin #2

9,627 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-Year Rainfall=9.48"

Area (sf) CN Description

62,973 39 >75% Grass cover, Good, HSG A

62,973 39 100.00% Pervious Area

Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)

9.5 100 0.0200 0.18 Sheet Flow, Grass: Short n= 0.150 P2= 3.42"

3.6 216 0.0200 0.99 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps

13.1 316 Total

Subcatchment 148S: DA P3 (Pervious)

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Summary for Subcatchment 149S: DA P0 Pervious

Runoff = 1.65 cfs @ 13.28 hrs, Volume= 31,994 cf, Depth= 1.14" Routed to Link 147L : POA

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-Year Rainfall=9.48"

Area (sf) CN Description

236,879 30 Woods, Good, HSG A

99,371 39 >75% Grass cover, Good, HSG A

336,250 33 Weighted Average

336,250 33 100.00% Pervious Area

Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)

36.2 100 0.0050 0.05 Sheet Flow, Woods: Light underbrush n=0.400 P2=3.42" Shallow Concentrated Flow, Woodland Kv=5.0 fps

13.6 579 0.0200 0.71

49.8 679 Total

Subcatchment 149S: DA P0 Pervious

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Page 51

Summary for Subcatchment 150S: DA P4 (Pervious)

Runoff = 1.50 cfs @ 12.30 hrs, Volume= 11,767 cf, Depth= 1.83" Routed to Pond 144P : WQ 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-Year Rainfall=9.48"

Area (sf) CN Description

76,971 39 >75% Grass cover, Good, HSG A

76,971 39 100.00% Pervious Area

Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description

12.5 100 0.0100 0.13 Sheet Flow, Grass: Short n= 0.150 P2= 3.42"

2.3 96 0.0100 0.70 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps

14.8 196 Total

Subcatchment 150S: DA P4 (Pervious)

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Summary for Subcatchment 172S: DA P6 (Impervious)

Runoff = 1.19 cfs @ 12.10 hrs, Volume=4,042 cf, Depth= 9.24"

Routed to Link 147L : POA

.∠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-Year Rainfall=9.48"

Area (sf) CN Description

5,250 98 Paved parking, HSG A

5,250 98 100.00% Impervious Area

Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description

0.8 100 0.0500 2.05 Sheet Flow,

0.6 50 0.0050 1.44 Smooth surfaces n= 0.011 P2= 3.42"

Paved Kv= 20.3 fps

1.4 150 Total

Shallow Concentrated Flow,

Subcatchment 172S: DA P6 (Impervious)

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Summary for Pond 130P: SUBSURFACE

Inflow Area = 4,000 sf, 0.00% Impervious, Inflow Depth = 9.24" for 100-Year event

Inflow = 0.68 cfs @ 12.14 hrs, Volume= 3,080 cf

Outflow = 0.04 cfs @ 10.15 hrs, Volume= 3,080 cf, Atten= 94%, Lag= 0.0 min

Discarded = 0.04 cfs @ 10.15 hrs, Volume= 3,080 cf

Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs

Peak Elev= 4.98' @ 14.27 hrs Surf.Area= 533 sf Storage= 1,335 cf

Plug-Flow detention time= 265.3 min calculated for 3,079 cf (100% of inflow)

Center-of-Mass det. time= 265.3 min ( 1,008.8 - 743.6 )

Volume Invert Avail.Storage Storage Description

#1A 0.00' 765 cf 13.00'W x 41.00'L x 5.00'H Field A

#2A 1.00' 573 cf 2,664 cf Overall - 751 cf Embedded = 1,914 cf x 40.0% Voids

ADS N-12 30" x 6 Inside #1

Inside= 30.0"W x 30.0"H => 4.90 sf x 20.00'L = 98.0 cf

Outside= 36.0"W x 36.0"H => 6.42 sf x 20.00'L = 128.3 cf

Row Length Adjustment= -1.00' x 4.90 sf x 3 rows

1,339 cf Total Available Storage

Storage Group A created with Chamber Wizard

Device Routing Invert Outlet Devices

#1 Discarded 0.00' 3.250 in/hr Exfiltration over Surface area

Discarded OutFlow Max=0.04 cfs @ 10.15 hrs HW=0.05' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.04 cfs)

Page 94 Download HTML

Pond 130P: SUBSURFACE

Page 95 Download HTML

Stage-Discharge for Pond 130P: SUBSURFACE

Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
0.000.002.600.04
0.050.042.650.04
0.100.042.700.04
0.150.042.750.04
0.200.042.800.04
0.250.042.850.04
0.300.042.900.04
0.350.042.950.04
0.400.043.000.04
0.450.043.050.04
0.500.043.100.04
0.550.043.150.04
0.600.043.200.04
0.650.043.250.04
0.700.043.300.04
0.750.043.350.04
0.800.043.400.04
0.850.043.450.04
0.900.043.500.04
0.950.043.550.04
1.000.043.600.04
1.050.043.650.04
1.100.043.700.04
1.150.043.750.04
1.200.043.800.04
1.250.043.850.04
1.300.043.900.04
1.350.043.950.04
1.400.044.000.04
1.450.044.050.04
1.500.044.100.04
1.550.044.150.04
1.600.044.200.04
1.650.044.250.04
1.700.044.300.04
1.750.044.350.04
1.800.044.400.04
1.850.044.450.04
1.900.044.500.04
1.950.044.550.04
2.000.044.600.04
2.050.044.650.04
2.100.044.700.04
2.150.044.750.04
2.200.044.800.04
2.250.044.850.04
2.300.044.900.04
2.350.044.950.04
2.400.045.000.04
2.450.04
2.500.04
2.550.04

Page 55

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Page 56

Stage-Area-Storage for Pond 130P: SUBSURFACE

Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
0.0053302.60533707
0.05533112.65533726
0.10533212.70533745
0.15533322.75533764
0.20533432.80533782
0.25533532.85533801
0.30533642.90533819
0.35533752.95533838
0.40533853.00533856
0.45533963.05533874
0.505331073.10533891
0.555331173.15533909
0.605331283.20533926
0.655331393.25533943
0.705331493.30533960
0.755331603.35533976
0.805331713.40533992
0.855331813.455331,007
0.905331923.505331,022
0.955332033.555331,037
1.005332133.605331,050
1.055332233.655331,063
1.105332313.705331,075
1.155332403.755331,084
1.205332473.805331,092
1.255332553.855331,099
1.305332643.905331,107
1.355332763.955331,116
1.405332894.005331,126
1.455333024.055331,136
1.505333174.105331,147
1.555333324.155331,158
1.605333474.205331,168
1.655333634.255331,179
1.705333794.305331,190
1.755333964.355331,200
1.805334134.405331,211
1.855334304.455331,222
1.905334484.505331,232
1.955334654.555331,243
2.005334834.605331,254
2.055335014.655331,264
2.105335204.705331,275
2.155335384.755331,286
2.205335574.805331,296
2.255335754.855331,307
2.305335944.905331,318
2.355336134.955331,328
2.405336325.005331,339
2.45533651
2.50533669
2.55533688
Page 97 Download HTML

Summary for Pond 144P: WQ Infiltration Basin #1

Inflow Area = 108,596 sf, 29.12% Impervious, Inflow Depth = 3.99" for 100-Year event

Inflow = 7.21 cfs @ 12.11 hrs, Volume= 36,117 cf

Outflow = 0.66 cfs @ 14.19 hrs, Volume= 36,117 cf, Atten= 91%, Lag= 124.7 min

Discarded = 0.49 cfs @ 14.19 hrs, Volume= 34,901 cf

Primary = 0.17 cfs @ 14.19 hrs, Volume= 1,215 cf

Routed to Link 147L : POA

Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs

Peak Elev= 97.79' @ 14.19 hrs Surf.Area= 6,774 sf Storage= 15,241 cf

Plug-Flow detention time= 300.5 min calculated for 36,111 cf (100% of inflow)

Plug-Flow detention time = 300.5 min calculated for 36,111 cf (100% of inflow) Center-of-Mass det. time = 300.5 min (1,100.6 - 800.1)

VolumeInvertAvail.StorageStorage Description
#195.00'16,706 cfCustom Stage Data (Prismatic) Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
95.004,23100
96.005,0924,6624,662
97.006,0085,55010,212
98.006,9816,49516,706
DeviceRoutingInvertOutlet Devices
#1Primary97.60'15.0" Round Culvert to Subsurface Basin L= 35.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 95.00' / 97.60' S= -0.0743'' Cc= 0.900 n= 0.012 Corrugated PP, smooth interior, Flow Area= 1.23 sf
#2Device 197.00'4.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s)
#3Discarded95.00'3.100 in/hr Exfiltration over Surface area

Discarded OutFlow Max=0.49 cfs @ 14.19 hrs HW=97.79' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.49 cfs)

Primary OutFlow Max=0.17 cfs @ 14.19 hrs HW=97.79' (Free Discharge) 1=Culvert to Subsurface Basin (Inlet Controls 0.17 cfs @ 1.47 fps) 2=Sharp-Crested Rectangular Weir (Passes 0.17 cfs of 5.75 cfs potential flow)

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Pond 144P: WQ Infiltration Basin #1

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)

Inflow Outflow Discarded Primary

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Page 59

Stage-Discharge for Pond 144P: WQ Infiltration Basin #1

Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)
95.000.000.000.0097.600.470.470.00
95.050.310.310.0097.650.490.480.01
95.100.310.310.0097.700.530.480.05
95.150.310.310.0097.750.590.480.11
95.200.320.320.0097.800.680.490.19
95.250.320.320.0097.850.790.490.30
95.300.320.320.0097.900.920.490.42
95.350.330.330.0097.951.060.500.57
95.400.330.330.0098.001.230.500.73
95.450.330.330.0098.051.410.500.91
95.500.330.330.0098.101.600.501.10
95.550.340.340.0098.151.810.501.31
95.600.340.340.0098.202.040.501.54
95.650.340.340.0098.252.270.501.77
95.700.350.350.0098.302.520.502.01
95.750.350.350.0098.352.770.502.27
95.800.350.350.0098.403.030.502.53
95.850.360.360.0098.453.290.502.79
95.900.360.360.0098.503.560.503.06
95.950.360.360.0098.553.820.503.32
96.000.370.370.0098.604.080.503.58
96.050.370.370.0098.654.340.503.84
96.100.370.370.0098.704.590.504.08
96.150.380.380.0098.754.810.504.31
96.200.380.380.0098.805.020.504.52
96.250.380.380.0098.855.170.504.67
96.300.390.390.00
96.350.390.390.00
96.400.390.390.00
96.450.390.390.00
96.500.400.400.00
96.550.400.400.00
96.600.400.400.00
96.650.410.410.00
96.700.410.410.00
96.750.410.410.00
96.800.420.420.00
96.850.420.420.00
96.900.420.420.00
96.950.430.430.00
97.000.430.430.00
97.050.430.430.00
97.100.440.440.00
97.150.440.440.00
97.200.450.450.00
97.250.450.450.00
97.300.450.450.00
97.350.460.460.00
97.400.460.460.00
97.450.460.460.00
97.500.470.470.00
97.550.470.470.00
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Page 60

Stage-Area-Storage for Pond 144P: WQ Infiltration Basin #1

Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
95.004,231097.606,59213,991
95.054,27421397.656,64014,322
95.104,31742797.706,68914,655
95.154,36064497.756,73814,991
95.204,40386397.806,78615,329
95.254,4461,08597.856,83515,670
95.304,4891,30897.906,88416,013
95.354,5321,53497.956,93216,358
95.404,5751,76198.006,98116,706
95.454,6181,99198.056,98116,706
95.504,6622,22398.106,98116,706
95.554,7052,45798.156,98116,706
95.604,7482,69498.206,98116,706
95.654,7912,93298.256,98116,706
95.704,8343,17398.306,98116,706
95.754,8773,41598.356,98116,706
95.804,9203,66098.406,98116,706
95.854,9633,90798.456,98116,706
95.905,0064,15798.506,98116,706
95.955,0494,40898.556,98116,706
96.005,0924,66298.606,98116,706
96.055,1384,91798.656,98116,706
96.105,1845,17598.706,98116,706
96.155,2295,43698.756,98116,706
96.205,2755,69898.806,98116,706
96.255,3215,96398.856,98116,706
96.305,3676,230
96.355,4136,500
96.405,4586,772
96.455,5047,046
96.505,5507,322
96.555,5967,601
96.605,6427,882
96.655,6878,165
96.705,7338,450
96.755,7798,738
96.805,8259,028
96.855,8719,321
96.905,9169,615
96.955,9629,912
97.006,00810,212
97.056,05710,513
97.106,10510,817
97.156,15411,124
97.206,20311,433
97.256,25111,744
97.306,30012,058
97.356,34912,374
97.406,39712,693
97.456,44613,014
97.506,49513,337
97.556,54313,663
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Summary for Pond 149P: WQ Infiltration Basin #2

Inflow Area = 86,443 sf, 27.15% Impervious, Inflow Depth = 3.84" for 100-Year event

Inflow = 5.06 cfs @ 12.14 hrs, Volume= 27,698 cf

Outflow = 0.70 cfs @ 13.56 hrs, Volume= 27,698 cf, Atten= 86%, Lag= 85.4 min

Discarded = 0.13 cfs @ 13.56 hrs, Volume= 18,586 cf

Primary = 0.57 cfs @ 13.56 hrs, Volume= 9,111 cf

Routed to Link 147L : POA

Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs

Peak Elev= 94.41' @ 13.56 hrs Surf.Area= 5,362 sf Storage= 13,337 cf

Plug-Flow detention time= 665.1 min calculated for 27,698 cf (100% of inflow)

Center-of-Mass det. time= 665.1 min ( 1,470.3 - 805.2 )

VolumeInvertAvail.StorageStorage Description
#191.00'13,818 cfCustom Stage Data (Prismatic) Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
91.002,62800
92.003,3202,9742,974
93.004,0673,6946,668
94.005,0104,53911,206
94.505,4382,61213,818
DeviceRoutingInvertOutlet Devices
#1Primary93.80'6.0" Round Culvert to Subsurface Basin L= 35.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 92.00' / 93.80' S= -0.0514'' Cc= 0.900 n= 0.012 Corrugated PP, smooth interior, Flow Area= 0.20 sf
#2Device 193.00'4.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s)
#3Discarded91.00'1.050 in/hr Exfiltration over Surface area

Discarded OutFlow Max=0.13 cfs @ 13.56 hrs HW=94.41' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.13 cfs)

Primary OutFlow Max=0.57 cfs @ 13.56 hrs HW=94.41' (Free Discharge)

1=Culvert to Subsurface Basin (Inlet Controls 0.57 cfs @ 2.89 fps) 2=Sharp-Crested Rectangular Weir (Passes 0.57 cfs of 16.44 cfs potential flow)

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Pond 149P: WQ Infiltration Basin #2

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)

Inflow Outflow Discarded Primary

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Stage-Discharge for Pond 149P: WQ Infiltration Basin #2

Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)
91.000.000.000.0093.600.110.110.00
91.050.060.060.0093.650.110.110.00
91.100.070.070.0093.700.110.110.00
91.150.070.070.0093.750.120.120.00
91.200.070.070.0093.800.120.120.00
91.250.070.070.0093.850.130.120.01
91.300.070.070.0093.900.150.120.03
91.350.070.070.0093.950.190.120.07
91.400.070.070.0094.000.230.120.11
91.450.070.070.0094.050.290.120.17
91.500.070.070.0094.100.350.120.23
91.550.070.070.0094.150.420.120.30
91.600.070.070.0094.200.490.130.36
91.650.070.070.0094.250.550.130.43
91.700.080.080.0094.300.600.130.47
91.750.080.080.0094.350.650.130.52
91.800.080.080.0094.400.690.130.56
91.850.080.080.0094.450.730.130.60
91.900.080.080.0094.500.770.130.63
91.950.080.080.00
92.000.080.080.00
92.050.080.080.00
92.100.080.080.00
92.150.080.080.00
92.200.080.080.00
92.250.090.090.00
92.300.090.090.00
92.350.090.090.00
92.400.090.090.00
92.450.090.090.00
92.500.090.090.00
92.550.090.090.00
92.600.090.090.00
92.650.090.090.00
92.700.090.090.00
92.750.090.090.00
92.800.100.100.00
92.850.100.100.00
92.900.100.100.00
92.950.100.100.00
93.000.100.100.00
93.050.100.100.00
93.100.100.100.00
93.150.100.100.00
93.200.100.100.00
93.250.100.100.00
93.300.110.110.00
93.350.110.110.00
93.400.110.110.00
93.450.110.110.00
93.500.110.110.00
93.550.110.110.00
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Stage-Area-Storage for Pond 149P: WQ Infiltration Basin #2

Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
91.002,628093.604,6339,277
91.052,66313293.654,6809,510
91.102,69726693.704,7279,745
91.152,73240293.754,7749,983
91.202,76653993.804,82110,222
91.252,80167993.854,86910,468
91.302,83682093.904,91610,710
91.352,87096293.954,96310,957
91.402,9051,10794.005,01011,206
91.452,9391,25394.055,05311,458
91.502,9741,40194.105,09611,717
91.553,0091,55094.155,13811,967
91.603,0431,70194.205,18112,225
91.653,0781,85494.255,22412,488
91.703,1122,00994.305,26712,748
91.753,1472,16694.355,31013,012
91.803,1822,32494.405,35213,278
91.853,2162,48494.455,39513,547
91.903,2512,64594.505,43813,818
91.953,2852,809
92.003,3202,974
92.053,3573,141
92.103,3953,310
92.153,4323,480
92.203,4693,653
92.253,5073,827
92.303,5444,004
92.353,5814,182
92.403,6194,362
92.453,6564,544
92.503,6944,727
92.553,7314,913
92.603,7685,100
92.653,8065,290
92.703,8435,481
92.753,8805,674
92.803,9185,869
92.853,9556,066
92.903,9926,265
92.954,0306,465
93.004,0676,668
93.054,1146,872
93.104,1617,079
93.154,2087,288
93.204,2567,500
93.254,3037,714
93.304,3507,930
93.354,3978,149
93.404,4448,370
93.454,4918,593
93.504,5398,819
93.554,5869,047
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Page 65

Summary for Link 147L: POA

Inflow Area = 536,539 sf, 11.25% Impervious, Inflow Depth = 1.04" for 100-Year event Inflow = 2.36 cfs @ 13.51 hrs, Volume = 46,363 cf Primary = 2.36 cfs @ 13.51 hrs, Volume = 46,363 cf, Atten = 0%, Lag = 0.0 min

Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs

Link 147L: POA

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APPENDIX D

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HALER CONSULTING, LLC 102 Sams Road Pipe Calculations

102 Sams Road Jackson Block 20101, Lot 29&30 Ocean County

23-092 October 2025

StationDrainage Area A (ac)A x CInvert Elev.
FromToLength (ft)IncrementalTotalRunoff Coefficient CIncrementalTotalRainfall Intensity ITotal Runoff Q=CIAPipe Diameter (in)Capacity Full (ft3/sec)Upper EndLower EndSlope (ft/ft)
INLET 2INLET 138.02.9762.9760.982.9162.926.719.542422.5195.4095.250.0039
INLET 1OUTLET54.02.9762.9760.982.9162.926.719.542424.3895.2595.000.0046
INLET 3INLET 439.03.9283.9280.983.8493.856.725.792428.6992.0591.800.0064
INLET 4OUTLET106.03.9283.9280.983.8493.856.725.792431.1391.8091.000.0075
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APPENDIX E

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Scour Hole: Wo 2.00 ft Do 2.00 ft Q100 6.36 cfs q 3.18 D 1.00 (Do or 0.5*Do) Tw 0.21 ft

Dimensions: W1 4 ft W2 10 ft L1 6 ft L2 12 ft

Riprap where Y = 1/2D0 d50 = 0.0125/Twq1.33 where Y=D_{0} d_{50}=\frac{0.0082}{Tw}q^{1.33} Y=0.5Do d50 0.28 ft Use 6" Y=Do d50 0.18 ft Use 6"

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Scour Hole: Wo 2.00 ft Do 2.00 ft Q100 6.40 cfs q 3.20 D 1.00 (Do or 0.5*Do) Tw 0.31 ft

Dimensions: W1 4 ft W2 10 ft L1 6 ft L2 12 ft

Riprap where Y = 1/2D0 d50 = 0.0125/Twq1.33 where Y = D0 d50 = 0.0082/Tw q1.33 Y=0.5Do d50 0.19 ft Use 6" Y=Do d50 0.12 ft Use 6"

Page 111 Download HTML

New Jersey Department of Agriculture Hydrologic Modeling Database – Data Entry Form

Project Site Details

Chpt. 251 Application Number:

Start Date (if known): ___

. Cuzan County

Street Address: 102 SAMS ROAD

JAMS ROAD

Municipality: Jackson

Block: 20101

Lot: 29&30

NJDEP Anderson Landuse Code (4 digits):

Landuse description: 1810

Site Centroid Location (NJ State Plane Feet):1

Northing: 457298 Easting: 553535

Project Contact Details

Applicant:_____

Address:___

Phone:_____

Email: ___

Post Construction Operation & Maintenance:2

Party Name: ___

Address: ___

Phone: _____

Email: ___

Party type: ___

SSCC 251 HDF1

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New Jersey Department of Agriculture Hydrologic Modeling Database – Data Entry Short Form

Note: Provide an electronic copy (pdf) of the drainage report which contains basin design data, flow rates etc. to the soil conservation district as part of the application package. Make additional copies of this page for additional basin information as needed. If no electronic drainage report can be provided, then the Data Entry Long Form must be used.

Basin IDBasin Centroid Northing, Easting (SPF)Basin Type (ex., detention, infiltration, wet pond etc)Construction (embankment, excavated, subsurface?)Dam Height (ft)Width (ft)Dam Class (I-V or NA)Outlet ID (HW# or FES#)Outlet Location Northing, Easting (SPF)Comments
WQ Basin 1457185 553442detention + infiltrationSurfaceOCS-1457260 553511
WQ Basin 2457265 553750detention + infiltrationSurfaceOCS-2457263 553768
Subsurface Lot 30.01457585 553803detention + infiltrationSubsurface
Subsurface Lot 30.02457640 553622detention + infiltrationSubsurface
Subsurface Lot 30.03457328 553534detention + infiltrationSubsurface
Subsurface Lot 30.04457643 553392detention + infiltrationSubsurface
Subsurface Lot 30.05457417 553272detention + infiltrationSubsurface
Subsurface Lot 30.06457208 553208detention + infiltrationSubsurface
Subsurface Lot 30.07456993 553380detention + infiltrationSubsurface
Subsurface Lot 30.08456967 553485detention + infiltrationSubsurface
Subsurface Lot 30.09457180 553604detention + infiltrationSubsurface
Page 113 Download HTML

APPENDIX F

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Page 115 Download HTML

Area Listing (selected nodes)

Area (sq-ft)CNDescription (subcatchment-numbers)
239,31539>75% Grass cover, Good, HSG A (178S, 179S, 180S)
60,34598Paved parking, HSG A (170S, 174S, 181S)
236,87930Woods, Good, HSG A (179S)
536,53942TOTAL AREA
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102 Sams -REV 12-02-25 NOAA 24-hr D 2-Year Rainfall=3.42" Prepared by Haler Consulting Printed 04/12/2025 HydroCAD® 10.20-2h s/n 10351 © 2024 HydroCAD Software Solutions LLC Page 3

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 Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 170S: DA P1 (Impervious) Runoff Area=31,625 sf 100.00% Impervious Runoff Depth=3.19" Flow Length=450' Tc=3.0 min CN=0/98 Runoff=2.34 cfs 8,398 cf Subcatchment 174S: DA P2 (Impervious) Runoff Area=23,470 sf 100.00% Impervious Runoff Depth=3.19" Flow Length=450' Tc=4.9 min CN=0/98 Runoff=1.53 cfs 6,233 cf Subcatchment 178S: DA P3 (Pervious) Runoff Area=62,973 sf 0.00% Impervious Runoff Depth=0.01" Flow Length=316' Slope=0.0200'/' Tc=13.1 min CN=39/0 Runoff=0.00 cfs 28 cf Subcatchment 179S: DA P0 Pervious Runoff Area=336,250 sf 0.00% Impervious Runoff Depth=0.00" Flow Length=679' Tc=49.8 min CN=33/0 Runoff=0.00 cfs 0 cf Subcatchment 180S: DA P4 (Pervious) Runoff Area=76,971 sf 0.00% Impervious Runoff Depth=0.01" Flow Length=196' Slope=0.0100'/' Tc=14.8 min CN=39/0 Runoff=0.00 cfs 34 cf Subcatchment 181S: DA P6 (Impervious) Runoff Area=5,250 sf 100.00% Impervious Runoff Depth=3.19" Flow Length=150' Tc=1.4 min CN=0/98 Runoff=0.43 cfs 1,394 cf Pond 183P: WQ Infiltration Basin #1 Peak Elevation=97.83' Storage=15,558 cfs Inflow=2.34 cfs 8,433 cf Discarded=0.00 cfs 0 cf Primary=0.26 cfs 4,631 cf Outflow=0.26 cfs 4,631 cf Pond 184P: WQ Infiltration Basin #2 Peak Elevation=93.98' Storage=11,122 cfs Inflow=1.53 cfs 6,261 cf Discarded=0.00 cfs 0 cf Primary=0.10 cfs 2,699 cf Outflow=0.10 cfs 2,699 cf Link 185L: POA Inflow=0.43 cfs 8,725 cf Primary=0.43 cfs 8,725 cf Total Runoff Area = 536,539 sf Runoff Volume = 16,088 cf Average Runoff Depth = 0.36" 88.75% Pervious = 476.194 sf 11.25% Impervious = 60.345 sf

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Summary for Subcatchment 170S: DA P1 (Impervious)

Runoff = 2.34 cfs @ 12.11 hrs, Volume= 8,398 cf, Depth= 3.19" Routed to Pond 183P : WQ 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 2-Year Rainfall=3.42"

Area (sf) CN Description

31,625 98 Paved parking, HSG A

31,625 98 100.00% Impervious Area

Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)

1.2 100 0.0200 1.42 Sheet Flow, Smooth surfaces n= 0.011 P2= 3.42"

1.8 350 0.0250 3.21 Shallow Concentrated Flow, Paved Kv= 20.3 fps

3.0 450 Total

Subcatchment 170S: DA P1 (Impervious)

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Summary for Subcatchment 174S: DA P2 (Impervious)

Runoff = 1.53 cfs @ 12.13 hrs, Volume=6,233 cf, Depth= 3.19"

Routed to Pond 184P : WQ Infiltration Basin #2

6,233 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-Year Rainfall=3.42"

Area (sf) CN Description

23,470 98 Paved parking, HSG A

23,470 98 100.00% Impervious Area

Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)

0.8 100 0.0500 2.05 Sheet Flow, Smooth surfaces n= 0.011 P2= 3.42"

4.1 350 0.0050 1.44 Shallow Concentrated Flow, Paved Kv= 20.3 fps

4.9 450 Total

Subcatchment 174S: DA P2 (Impervious)

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Summary for Subcatchment 178S: DA P3 (Pervious)

Runoff = 0.00 cfs @ 24.01 hrs, Volume= 28 cf, Depth= 0.01" Routed to Pond 184P : WQ Infiltration Basin #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-Year Rainfall=3.42"

Area (sf) CN Description

62,973 39 >75% Grass cover, Good, HSG A

62,973 39 100.00% Pervious Area

Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)

9.5 100 0.0200 0.18 Sheet Flow, Grass: Short n= 0.150 P2= 3.42"

3.6 216 0.0200 0.99 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps

13.1 316 Total

Subcatchment 178S: DA P3 (Pervious)

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Summary for Subcatchment 179S: DA P0 Pervious

Runoff = 0.00 cfs @ 0.00 hrs, Volume= 0 cf, Depth= 0.00" Routed to Link 185L : POA

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-Year Rainfall=3.42"

Area (sf) CN Description

236,879 30 Woods, Good, HSG A

99,371 39 >75% Grass cover, Good, HSG A

336,250 33 Weighted Average

336,250 33 100.00% Pervious Area

Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)

36.2 100 0.0050 0.05 Sheet Flow, Woods: Light underbrush n=0.400 P2=3.42" Shallow Concentrated Flow, Woodland Kv=5.0 fps

13.6 579 0.0200 0.71

49.8 679 Total

Subcatchment 179S: DA P0 Pervious

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Summary for Subcatchment 180S: DA P4 (Pervious)

Runoff = 0.00 cfs @ 24.01 hrs, Volume= 34 cf, Depth= 0.01" Routed to Pond 183P : WQ 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 2-Year Rainfall=3.42"

Area (sf) CN Description

76,971 39 >75% Grass cover, Good, HSG A

76,971 39 100.00% Pervious Area

Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description

12.5 100 0.0100 0.13 Sheet Flow, Grass: Short n= 0.150 P2= 3.42"

2.3 96 0.0100 0.70 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps

14.8 196 Total

Subcatchment 180S: DA P4 (Pervious)

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Summary for Subcatchment 181S: DA P6 (Impervious)

Runoff = 0.43 cfs @ 12.10 hrs, Volume= 1,394 cf, Depth= 3.19" Routed to Link 185L : POA

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-Year Rainfall=3.42"

Area (sf) CN Description

5,250 98 Paved parking, HSG A

5,250 98 100.00% Impervious Area

Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)

0.8 100 0.0500 2.05 Sheet Flow, Smooth surfaces n= 0.011 P2= 3.42"

0.6 50 0.0050 1.44 Shallow Concentrated Flow, Paved Kv= 20.3 fps

1.4 150 Total

Subcatchment 181S: DA P6 (Impervious)

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Summary for Pond 183P: WQ Infiltration Basin #1

Inflow Area =108,596 sf,29.12% Impervious,Inflow Depth = 0.93" for 2-Year event
Inflow =2.34 cfs @12.11 hrs,Volume= 8,433 cf
Outflow =0.26 cfs @12.92 hrs,Volume= 4,631 cf,
Discarded =0.00 cfs @0.00 hrs,Volume= 0 cf
Primary =0.26 cfs @12.92 hrs,Volume= 4,631 cf
Routed to Link 185L : POA

Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Starting Elev= 97.00' Surf.Area= 6,008 sf Storage= 10,212 cf Peak Elev= 97.83' @ 12.92 hrs Surf.Area= 6,819 sf Storage= 15,558 cf (5,346 cf above start)

Plug-Flow detention time = (not calculated: initial storage exceeds outflow) Center-of-Mass det. time = 311.5 min (1,069.7 - 758.2)

VolumeInvertAvail.StorageStorage Description
#195.00'16,706 cfCustom Stage Data (Prismatic) Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
95.004,23100
96.005,0924,6624,662
97.006,0085,55010,212
98.006,9816,49516,706
DeviceRoutingInvertOutlet Devices
#1Primary97.60'15.0" Round Culvert to Subsurface Basin L= 35.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 95.00' / 97.60' S= -0.0743'' Cc= 0.900 n= 0.012 Corrugated PP, smooth interior, Flow Area= 1.23 sf
#2Device 197.00'4.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s)
#3Discarded95.00'3.100 in/hr Exfiltration X 0.00 over Surface area

Discarded OutFlow Max=0.00 cfs @ 0.00 hrs HW=97.00' (Free Discharge) 3=Exfiltration (Controls 0.00 cfs)

Primary OutFlow Max=0.26 cfs @ 12.92 hrs HW=97.83' (Free Discharge) 1=Culvert to Subsurface Basin (Inlet Controls 0.26 cfs @ 1.65 fps) 2=Sharp-Crested Rectangular Weir (Passes 0.26 cfs of 6.63 cfs potential flow)

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Page 11

Pond 183P: WQ Infiltration Basin #1

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)

Inflow Outflow Discarded Primary

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Stage-Discharge for Pond 183P: WQ Infiltration Basin #1

Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)
95.000.000.000.0097.600.000.000.00
95.050.000.000.0097.650.010.000.01
95.100.000.000.0097.700.050.000.05
95.150.000.000.0097.750.110.000.11
95.200.000.000.0097.800.190.000.19
95.250.000.000.0097.850.300.000.30
95.300.000.000.0097.900.420.000.42
95.350.000.000.0097.950.570.000.57
95.400.000.000.0098.000.730.000.73
95.450.000.000.0098.050.910.000.91
95.500.000.000.0098.101.100.001.10
95.550.000.000.0098.151.310.001.31
95.600.000.000.0098.201.540.001.54
95.650.000.000.0098.251.770.001.77
95.700.000.000.0098.302.010.002.01
95.750.000.000.0098.352.270.002.27
95.800.000.000.0098.402.530.002.53
95.850.000.000.0098.452.790.002.79
95.900.000.000.0098.503.060.003.06
95.950.000.000.0098.553.320.003.32
96.000.000.000.0098.603.580.003.58
96.050.000.000.0098.653.840.003.84
96.100.000.000.0098.704.080.004.08
96.150.000.000.0098.754.310.004.31
96.200.000.000.0098.804.520.004.52
96.250.000.000.0098.854.670.004.67
96.300.000.000.00
96.350.000.000.00
96.400.000.000.00
96.450.000.000.00
96.500.000.000.00
96.550.000.000.00
96.600.000.000.00
96.650.000.000.00
96.700.000.000.00
96.750.000.000.00
96.800.000.000.00
96.850.000.000.00
96.900.000.000.00
96.950.000.000.00
97.000.000.000.00
97.050.000.000.00
97.100.000.000.00
97.150.000.000.00
97.200.000.000.00
97.250.000.000.00
97.300.000.000.00
97.350.000.000.00
97.400.000.000.00
97.450.000.000.00
97.500.000.000.00
97.550.000.000.00
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Page 13

Stage-Area-Storage for Pond 183P: WQ Infiltration Basin #1

Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
95.004,231097.606,59213,991
95.054,27421397.656,64014,322
95.104,31742797.706,68914,655
95.154,36064497.756,73814,991
95.204,40386397.806,78615,329
95.254,4461,08597.856,83515,670
95.304,4891,30897.906,88416,013
95.354,5321,53497.956,93216,358
95.404,5751,76198.006,98116,706
95.454,6181,99198.056,98116,706
95.504,6622,22398.106,98116,706
95.554,7052,45798.156,98116,706
95.604,7482,69498.206,98116,706
95.654,7912,93298.256,98116,706
95.704,8343,17398.306,98116,706
95.754,8773,41598.356,98116,706
95.804,9203,66098.406,98116,706
95.854,9633,90798.456,98116,706
95.905,0064,15798.506,98116,706
95.955,0494,40898.556,98116,706
96.005,0924,66298.606,98116,706
96.055,1384,91798.656,98116,706
96.105,1845,17598.706,98116,706
96.155,2295,43698.756,98116,706
96.205,2755,69898.806,98116,706
96.255,3215,96398.856,98116,706
96.305,3676,230
96.355,4136,500
96.405,4586,772
96.455,5047,046
96.505,5507,322
96.555,5967,601
96.605,6427,882
96.655,6878,165
96.705,7338,450
96.755,7798,738
96.805,8259,028
96.855,8719,321
96.905,9169,615
96.955,9629,912
97.006,00810,212
97.056,05710,513
97.106,10510,817
97.156,15411,124
97.206,20311,433
97.256,25111,744
97.306,30012,058
97.356,34912,374
97.406,39712,693
97.456,44613,014
97.506,49513,337
97.556,54313,663
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Summary for Pond 184P: WQ Infiltration Basin #2

Inflow Area =86,443 sf,27.15% Impervious,Inflow Depth = 0.87" for 2-Year event
Inflow =1.53 cfs @12.13 hrs,6,261 cf
Outflow =0.10 cfs @13.87 hrs,2,699 cf, Atten= 94%, Lag= 104.6 min
Discarded =0.00 cfs @0.00 hrs,0 cf
Primary =0.10 cfs @13.87 hrs,2,699 cf
Routed to Link 185L : POA

Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Starting Elev= 93.00' Surf.Area= 4,067 sf Storage= 6,668 cf Peak Elev= 93.98' @ 13.87 hrs Surf.Area= 4,994 sf Storage= 11,122 cf (4,455 cf above start)

Plug-Flow detention time = (not calculated: initial storage exceeds outflow) Center-of-Mass det. time = 416.3 min (1,177.6 - 761.4)

VolumeInvertAvail.StorageStorage Description
#191.00'13,818 cfCustom Stage Data (Prismatic) Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
91.002,62800
92.003,3202,9742,974
93.004,0673,6946,668
94.005,0104,53911,206
94.505,4382,61213,818
DeviceRoutingInvertOutlet Devices
#1Primary93.80'6.0" Round Culvert to Subsurface Basin L= 35.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 92.00' / 93.80' S= -0.0514'' Cc= 0.900 n= 0.012 Corrugated PP, smooth interior, Flow Area= 0.20 sf
#2Device 193.00'4.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s)
#3Discarded91.00'1.050 in/hr Exfiltration X 0.00 over Surface area

Discarded OutFlow Max=0.00 cfs @ 0.00 hrs HW=93.00' (Free Discharge) 3=Exfiltration (Controls 0.00 cfs)

Primary OutFlow Max=0.10 cfs @ 13.87 hrs HW=93.98' (Free Discharge) 1=Culvert to Subsurface Basin (Inlet Controls 0.10 cfs @ 1.46 fps) 2=Sharp-Crested Rectangular Weir (Passes 0.10 cfs of 7.28 cfs potential flow)

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Page 15

Pond 184P: WQ Infiltration Basin #2

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)

Inflow Outflow Discarded Primary

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Stage-Discharge for Pond 184P: WQ Infiltration Basin #2

Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)
91.000.000.000.0093.600.000.000.00
91.050.000.000.0093.650.000.000.00
91.100.000.000.0093.700.000.000.00
91.150.000.000.0093.750.000.000.00
91.200.000.000.0093.800.000.000.00
91.250.000.000.0093.850.010.000.01
91.300.000.000.0093.900.030.000.03
91.350.000.000.0093.950.070.000.07
91.400.000.000.0094.000.110.000.11
91.450.000.000.0094.050.170.000.17
91.500.000.000.0094.100.230.000.23
91.550.000.000.0094.150.300.000.30
91.600.000.000.0094.200.360.000.36
91.650.000.000.0094.250.430.000.43
91.700.000.000.0094.300.470.000.47
91.750.000.000.0094.350.520.000.52
91.800.000.000.0094.400.560.000.56
91.850.000.000.0094.450.600.000.60
91.900.000.000.0094.500.630.000.63
91.950.000.000.00
92.000.000.000.00
92.050.000.000.00
92.100.000.000.00
92.150.000.000.00
92.200.000.000.00
92.250.000.000.00
92.300.000.000.00
92.350.000.000.00
92.400.000.000.00
92.450.000.000.00
92.500.000.000.00
92.550.000.000.00
92.600.000.000.00
92.650.000.000.00
92.700.000.000.00
92.750.000.000.00
92.800.000.000.00
92.850.000.000.00
92.900.000.000.00
92.950.000.000.00
93.000.000.000.00
93.050.000.000.00
93.100.000.000.00
93.150.000.000.00
93.200.000.000.00
93.250.000.000.00
93.300.000.000.00
93.350.000.000.00
93.400.000.000.00
93.450.000.000.00
93.500.000.000.00
93.550.000.000.00
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Page 17

Stage-Area-Storage for Pond 184P: WQ Infiltration Basin #2

Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
91.002,628093.604,6339,277
91.052,66313293.654,6809,510
91.102,69726693.704,7279,745
91.152,73240293.754,7749,983
91.202,76653993.804,82110,223
91.252,80167993.854,86910,468
91.302,83682093.904,91610,710
91.352,87096293.954,96310,957
91.402,9051,10794.005,01011,206
91.452,9391,25394.055,05311,458
91.502,9741,40194.105,09611,717
91.553,0091,55094.155,13811,967
91.603,0431,70194.205,18112,225
91.653,0781,85494.255,22412,488
91.703,1122,00994.305,26712,748
91.753,1472,16694.355,31013,012
91.803,1822,32494.405,35213,278
91.853,2162,48494.455,39513,547
91.903,2512,64594.505,43813,818
91.953,2852,809
92.003,3202,974
92.053,3573,141
92.103,3953,310
92.153,4323,480
92.203,4693,653
92.253,5073,827
92.303,5444,004
92.353,5814,182
92.403,6194,362
92.453,6564,544
92.503,6944,727
92.553,7314,913
92.603,7685,100
92.653,8065,290
92.703,8435,481
92.753,8805,674
92.803,9185,869
92.853,9556,066
92.903,9926,265
92.954,0306,465
93.004,0676,668
93.054,1146,872
93.104,1617,079
93.154,2087,288
93.204,2567,500
93.254,3037,714
93.304,3507,930
93.354,3978,149
93.404,4448,370
93.454,4918,593
93.504,5398,819
93.554,5869,047
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Page 18

Summary for Link 185L: POA

Inflow Area = 536,539 sf, 11.25% Impervious, Inflow Depth > 0.20" for 2-Year event Inflow = 0.43 cfs @ 12.10 hrs, Volume= 8,725 cf Primary = 0.43 cfs @ 12.10 hrs, Volume= 8,725 cf, Atten= 0%, Lag= 0.0 min

Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs

Link 185L: POA

Hydrograph

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102 Sams -REV 12-02-25 NOAA 24-hr D 10-Year Rainfall=5.38" Prepared by Haler Consulting Printed 04/12/2025 HydroCAD® 10.20-2h s/n 10351 © 2024 HydroCAD Software Solutions LLC Page 19

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 Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 170S: DA P1 (Impervious) Runoff Area=31,625 sf 100.00% Impervious Runoff Depth=5.14" Flow Length=450' Tc=3.0 min CN=0/98 Runoff=3.70 cfs 13,553 cf Subcatchment 174S: DA P2 (Impervious) Runoff Area=23,470 sf 100.00% Impervious Runoff Depth=5.14" Flow Length=450' Tc=4.9 min CN=0/98 Runoff=2.42 cfs 10,058 cf Subcatchment 178S: DA P3 (Pervious) Runoff Area=62,973 sf 0.00% Impervious Runoff Depth=0.28" Flow Length=316' Slope=0.0200'/' Tc=13.1 min CN=39/0 Runoff=0.07 cfs 1,487 cf Subcatchment 179S: DA P0 Pervious Runoff Area=336,250 sf 0.00% Impervious Runoff Depth=0.08" Flow Length=679' Tc=49.8 min CN=33/0 Runoff=0.06 cfs 2,256 cf Subcatchment 180S: DA P4 (Pervious) Runoff Area=76,971 sf 0.00% Impervious Runoff Depth=0.28" Flow Length=196' Slope=0.0100'/' Tc=14.8 min CN=39/0 Runoff=0.09 cfs 1,818 cf Subcatchment 181S: DA P6 (Impervious) Runoff Area=5,250 sf 100.00% Impervious Runoff Depth=5.14" Flow Length=150' Tc=1.4 min CN=0/98 Runoff=0.67 cfs 2,250 cf Pond 183P: WQ Infiltration Basin #1 Peak Elevation=98.69' Storage=16,706 cfs Inflow=3.70 cfs 15,371 cf Discarded=0.00 cfs 0 cf Primary=4.03 cfs 11,568 cf Outflow=4.03 cfs 11,568 cf Pond 184P: WQ Infiltration Basin #2 Peak Elevation=94.29' Storage=12,701 cfs Inflow=2.42 cfs 11,545 cf Discarded=0.00 cfs 0 cf Primary=0.47 cfs 7,983 cf Outflow=0.47 cfs 7,983 cf Link 185L: POA Inflow=4.64 cfs 24,056 cf Primary=4.64 cfs 24,056 cf Total Runoff Area = 536,539 sf Runoff Volume = 31,422 cf Average Runoff Depth = 0.70" 88.75% Pervious = 476,194 sf 11.25% Impervious = 60,345 sf

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Summary for Subcatchment 170S: DA P1 (Impervious)

Runoff = 3.70 cfs @ 12.11 hrs, Volume= 13,553 cf, Depth= 5.14" Routed to Pond 183P : WQ 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-Year Rainfall=5.38"

Area (sf) CN Description

31,625 98 Paved parking, HSG A

31,625 98 100.00% Impervious Area

Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)

1.2 100 0.0200 1.42 Sheet Flow, Smooth surfaces n= 0.011 P2= 3.42"

1.8 350 0.0250 3.21 Shallow Concentrated Flow, Paved Kv= 20.3 fps

3.0 450 Total

Subcatchment 170S: DA P1 (Impervious)

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Summary for Subcatchment 174S: DA P2 (Impervious)

Runoff = 2.42 cfs @ 12.13 hrs, Volume=10,058 cf, Depth= 5.14"

Routed to Pond 184P : WQ Infiltration Basin #2

10,058 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-Year Rainfall=5.38"

Area (sf) CN Description

23,470 98 Paved parking, HSG A

23,470 98 100.00% Impervious Area

Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)

0.8 100 0.0500 2.05 Sheet Flow, Smooth surfaces n= 0.011 P2= 3.42"

4.1 350 0.0050 1.44 Shallow Concentrated Flow, Paved Kv= 20.3 fps

4.9 450 Total

Subcatchment 174S: DA P2 (Impervious)

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Summary for Subcatchment 178S: DA P3 (Pervious)

Runoff = 0.07 cfs @ 13.04 hrs, Volume= 1,487 cf, Depth= 0.28" Routed to Pond 184P : WQ Infiltration Basin #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-Year Rainfall=5.38"

Area (sf) CN Description

62,973 39 >75% Grass cover, Good, HSG A

62,973 39 100.00% Pervious Area

Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)

9.5 100 0.0200 0.18 Sheet Flow, Grass: Short n= 0.150 P2= 3.42"

3.6 216 0.0200 0.99 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps

13.1 316 Total

Subcatchment 178S: DA P3 (Pervious)

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Summary for Subcatchment 179S: DA P0 Pervious

Runoff = 0.06 cfs @ 17.81 hrs, Volume= 2,256 cf, Depth= 0.08" Routed to Link 185L : POA

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-Year Rainfall=5.38"

Area (sf) CN Description

236,879 30 Woods, Good, HSG A

99,371 39 >75% Grass cover, Good, HSG A

336,250 33 Weighted Average

336,250 33 100.00% Pervious Area

Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)

36.2 100 0.0050 0.05 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 3.42" Shallow Concentrated Flow, Woodland Kv= 5.0 fps

13.6 579 0.0200 0.71

49.8 679 Total

Subcatchment 179S: DA P0 Pervious

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Summary for Subcatchment 180S: DA P4 (Pervious)

Runoff = 0.09 cfs @ 13.09 hrs, Volume= 1,818 cf, Depth= 0.28" Routed to Pond 183P : WQ 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-Year Rainfall=5.38"

Area (sf) CN Description

76,971 39 >75% Grass cover, Good, HSG A

76,971 39 100.00% Pervious Area

Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description

12.5 100 0.0100 0.13 Sheet Flow, Grass: Short n= 0.150 P2= 3.42"

2.3 96 0.0100 0.70 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps

14.8 196 Total

Subcatchment 180S: DA P4 (Pervious)

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Summary for Subcatchment 181S: DA P6 (Impervious)

Runoff = 0.67 cfs @ 12.10 hrs, Volume= 2,250 cf, Depth= 5.14" Routed to Link 185L : POA

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-Year Rainfall=5.38"

Area (sf) CN Description

5,250 98 Paved parking, HSG A

5,250 98 100.00% Impervious Area

Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)

0.8 100 0.0500 2.05 Sheet Flow, Smooth surfaces n= 0.011 P2= 3.42"

0.6 50 0.0050 1.44 Shallow Concentrated Flow, Paved Kv= 20.3 fps

1.4 150 Total

Subcatchment 181S: DA P6 (Impervious)

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Summary for Pond 183P: WQ Infiltration Basin #1

Inflow Area =108,596 sf,29.12% Impervious,Inflow Depth =1.70" for 10-Year event
Inflow =3.70 cfs @12.11 hrs,Volume=15,371 cf
Outflow =4.03 cfs @12.13 hrs,Volume=11,568 cf, Atten= 0%, Lag= 1.1 min
Discarded =0.00 cfs @0.00 hrs,Volume=0 cf
Primary =4.03 cfs @12.13 hrs,Volume=11,568 cf
Routed to Link 185L : POA
Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Starting Elev= 97.00' Surf.Area= 6,008 sf Storage= 10,212 cf Peak Elev= 98.69' @ 12.13 hrs Surf.Area= 6,981 sf Storage= 16,706 cf (6,495 cf above start)
Plug-Flow detention time= 1,319.2 min calculated for 1,356 cf (9% of inflow) Center-of-Mass det. time= 197.3 min ( 977.5 - 780.2 )
VolumeInvertAvail.StorageStorage Description
#195.00'16,706 cfCustom Stage Data (Prismatic) Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
95.004,23100
96.005,0924,6624,662
97.006,0085,55010,212
98.006,9816,49516,706
DeviceRoutingInvertOutlet Devices
#1Primary97.60'15.0" Round Culvert to Subsurface Basin L= 35.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 95.00' / 97.60' S= -0.0743'' Cc= 0.900 n= 0.012 Corrugated PP, smooth interior, Flow Area= 1.23 sf
#2Device 197.00'4.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s)
#3Discarded95.00'3.100 in/hr Exfiltration X 0.00 over Surface area

Discarded OutFlow Max=0.00 cfs @ 0.00 hrs HW=97.00' (Free Discharge) 3=Exfiltration (Controls 0.00 cfs)

Primary OutFlow Max=3.92 cfs @ 12.13 hrs HW=98.67' (Free Discharge) 1=Culvert to Subsurface Basin (Inlet Controls 3.92 cfs @ 3.52 fps) 2=Sharp-Crested Rectangular Weir (Passes 3.92 cfs of 23.50 cfs potential flow)

Page 140 Download HTML

Pond 183P: WQ Infiltration Basin #1

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)

Inflow Outflow Discarded Primary

Page 141 Download HTML

Stage-Discharge for Pond 183P: WQ Infiltration Basin #1

Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)
95.000.000.000.0097.600.000.000.00
95.050.000.000.0097.650.010.000.01
95.100.000.000.0097.700.050.000.05
95.150.000.000.0097.750.110.000.11
95.200.000.000.0097.800.190.000.19
95.250.000.000.0097.850.300.000.30
95.300.000.000.0097.900.420.000.42
95.350.000.000.0097.950.570.000.57
95.400.000.000.0098.000.730.000.73
95.450.000.000.0098.050.910.000.91
95.500.000.000.0098.101.100.001.10
95.550.000.000.0098.151.310.001.31
95.600.000.000.0098.201.540.001.54
95.650.000.000.0098.251.770.001.77
95.700.000.000.0098.302.010.002.01
95.750.000.000.0098.352.270.002.27
95.800.000.000.0098.402.530.002.53
95.850.000.000.0098.452.790.002.79
95.900.000.000.0098.503.060.003.06
95.950.000.000.0098.553.320.003.32
96.000.000.000.0098.603.580.003.58
96.050.000.000.0098.653.840.003.84
96.100.000.000.0098.704.080.004.08
96.150.000.000.0098.754.310.004.31
96.200.000.000.0098.804.520.004.52
96.250.000.000.0098.854.670.004.67
96.300.000.000.00
96.350.000.000.00
96.400.000.000.00
96.450.000.000.00
96.500.000.000.00
96.550.000.000.00
96.600.000.000.00
96.650.000.000.00
96.700.000.000.00
96.750.000.000.00
96.800.000.000.00
96.850.000.000.00
96.900.000.000.00
96.950.000.000.00
97.000.000.000.00
97.050.000.000.00
97.100.000.000.00
97.150.000.000.00
97.200.000.000.00
97.250.000.000.00
97.300.000.000.00
97.350.000.000.00
97.400.000.000.00
97.450.000.000.00
97.500.000.000.00
97.550.000.000.00
Page 142 Download HTML

Page 29

Stage-Area-Storage for Pond 183P: WQ Infiltration Basin #1

Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
95.004,231097.606,59213,991
95.054,27421397.656,64014,322
95.104,31742797.706,68914,655
95.154,36064497.756,73814,991
95.204,40386397.806,78615,329
95.254,4461,08597.856,83515,670
95.304,4891,30897.906,88416,013
95.354,5321,53497.956,93216,358
95.404,5751,76198.006,98116,706
95.454,6181,99198.056,98116,706
95.504,6622,22398.106,98116,706
95.554,7052,45798.156,98116,706
95.604,7482,69498.206,98116,706
95.654,7912,93298.256,98116,706
95.704,8343,17398.306,98116,706
95.754,8773,41598.356,98116,706
95.804,9203,66098.406,98116,706
95.854,9633,90798.456,98116,706
95.905,0064,15798.506,98116,706
95.955,0494,40898.556,98116,706
96.005,0924,66298.606,98116,706
96.055,1384,91798.656,98116,706
96.105,1845,17598.706,98116,706
96.155,2295,43698.756,98116,706
96.205,2755,69898.806,98116,706
96.255,3215,96398.856,98116,706
96.305,3676,230
96.355,4136,500
96.405,4586,772
96.455,5047,046
96.505,5507,322
96.555,5967,601
96.605,6427,882
96.655,6878,165
96.705,7338,450
96.755,7798,738
96.805,8259,028
96.855,8719,321
96.905,9169,615
96.955,9629,912
97.006,00810,212
97.056,05710,513
97.106,10510,817
97.156,15411,124
97.206,20311,433
97.256,25111,744
97.306,30012,058
97.356,34912,374
97.406,39712,693
97.456,44613,014
97.506,49513,337
97.556,54313,663
Page 143 Download HTML

Summary for Pond 184P: WQ Infiltration Basin #2

Inflow Area =86,443 sf,27.15% Impervious,Inflow Depth =1.60" for 10-Year event
Inflow =2.42 cfs @12.13 hrs,Volume=11,545 cf
Outflow =0.47 cfs @12.71 hrs,Volume=7,983 cf, Atten= 81%, Lag= 34.7 min
Discarded =0.00 cfs @0.00 hrs,Volume=0 cf
Primary =0.47 cfs @12.71 hrs,Volume=7,983 cf
Routed to Link 185L : POA

Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Starting Elev= 93.00' Surf.Area= 4,067 sf Storage= 6,668 cf Peak Elev= 94.29' @ 12.71 hrs Surf.Area= 5,259 sf Storage= 12,701 cf (6,033 cf above start)

Plug-Flow detention time = 1,244.2 min calculated for 1,315 cf (11% of inflow) Center-of-Mass det. time = 244.7 min (1,030.2 - 785.4)

VolumeInvertAvail.StorageStorage Description
#191.00'13,818 cfCustom Stage Data (Prismatic) Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
91.002,62800
92.003,3202,9742,974
93.004,0673,6946,668
94.005,0104,53911,206
94.505,4382,61213,818
DeviceRoutingInvertOutlet Devices
#1Primary93.80'6.0" Round Culvert to Subsurface Basin L= 35.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 92.00' / 93.80' S= -0.0514'' Cc= 0.900 n= 0.012 Corrugated PP, smooth interior, Flow Area= 0.20 sf
#2Device 193.00'4.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s)
#3Discarded91.00'1.050 in/hr Exfiltration X 0.00 over Surface area

Discarded OutFlow Max=0.00 cfs @ 0.00 hrs HW=93.00' (Free Discharge) 3=Exfiltration (Controls 0.00 cfs)

Primary OutFlow Max=0.47 cfs @ 12.71 hrs HW=94.29' (Free Discharge) 1=Culvert to Subsurface Basin (Inlet Controls 0.47 cfs @ 2.39 fps) 2=Sharp-Crested Rectangular Weir (Passes 0.47 cfs of 13.88 cfs potential flow)

Page 144 Download HTML

Page 31

Pond 184P: WQ Infiltration Basin #2

Inflow Outflow Discarded Primary

Page 145 Download HTML

Stage-Discharge for Pond 184P: WQ Infiltration Basin #2

Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)
91.000.000.000.0093.600.000.000.00
91.050.000.000.0093.650.000.000.00
91.100.000.000.0093.700.000.000.00
91.150.000.000.0093.750.000.000.00
91.200.000.000.0093.800.000.000.00
91.250.000.000.0093.850.010.000.01
91.300.000.000.0093.900.030.000.03
91.350.000.000.0093.950.070.000.07
91.400.000.000.0094.000.110.000.11
91.450.000.000.0094.050.170.000.17
91.500.000.000.0094.100.230.000.23
91.550.000.000.0094.150.300.000.30
91.600.000.000.0094.200.360.000.36
91.650.000.000.0094.250.430.000.43
91.700.000.000.0094.300.470.000.47
91.750.000.000.0094.350.520.000.52
91.800.000.000.0094.400.560.000.56
91.850.000.000.0094.450.600.000.60
91.900.000.000.0094.500.630.000.63
91.950.000.000.00
92.000.000.000.00
92.050.000.000.00
92.100.000.000.00
92.150.000.000.00
92.200.000.000.00
92.250.000.000.00
92.300.000.000.00
92.350.000.000.00
92.400.000.000.00
92.450.000.000.00
92.500.000.000.00
92.550.000.000.00
92.600.000.000.00
92.650.000.000.00
92.700.000.000.00
92.750.000.000.00
92.800.000.000.00
92.850.000.000.00
92.900.000.000.00
92.950.000.000.00
93.000.000.000.00
93.050.000.000.00
93.100.000.000.00
93.150.000.000.00
93.200.000.000.00
93.250.000.000.00
93.300.000.000.00
93.350.000.000.00
93.400.000.000.00
93.450.000.000.00
93.500.000.000.00
93.550.000.000.00
Page 146 Download HTML

Page 33

Stage-Area-Storage for Pond 184P: WQ Infiltration Basin #2

Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
91.002,628093.604,6339,277
91.052,66313293.654,6809,510
91.102,69726693.704,7279,745
91.152,73240293.754,7749,983
91.202,76653993.804,82110,223
91.252,80167993.854,86910,468
91.302,83682093.904,91610,710
91.352,87096293.954,96310,957
91.402,9051,10794.005,01011,206
91.452,9391,25394.055,05311,458
91.502,9741,40194.105,09611,711
91.553,0091,55094.155,13811,967
91.603,0431,70194.205,18112,225
91.653,0781,85494.255,22412,488
91.703,1122,00994.305,26712,748
91.753,1472,16694.355,31013,012
91.803,1822,32494.405,35213,278
91.853,2162,48494.455,39513,547
91.903,2512,64594.505,43813,818
91.953,2852,809
92.003,3202,974
92.053,3573,141
92.103,3953,310
92.153,4323,480
92.203,4693,653
92.253,5073,827
92.303,5444,004
92.353,5814,182
92.403,6194,362
92.453,6564,544
92.503,6944,727
92.553,7314,913
92.603,7685,100
92.653,8065,290
92.703,8435,481
92.753,8805,674
92.803,9185,869
92.853,9556,066
92.903,9926,265
92.954,0306,465
93.004,0676,668
93.054,1146,872
93.104,1617,079
93.154,2087,288
93.204,2567,500
93.254,3037,714
93.304,3507,930
93.354,3978,149
93.404,4448,370
93.454,4918,593
93.504,5398,819
93.554,5869,047
Page 147 Download HTML

Page 34

Summary for Link 185L: POA

Inflow Area = 536,539 sf, 11.25% Impervious, Inflow Depth > 0.54" for 10-Year event Inflow = 4.64 cfs @ 12.13 hrs, Volume= 24,056 cf Primary = 4.64 cfs @ 12.13 hrs, Volume= 24,056 cf, Atten= 0%, Lag= 0.0 min

Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs

Link 185L: POA

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102 Sams -REV 12-02-25 NOAA 24-hr D 25-Year Rainfall=6.68" Prepared by Haler Consulting Printed 04/12/2025 HydroCAD® 10.20-2h s/n 10351 © 2024 HydroCAD Software Solutions LLC Page 35

Ime span=0.00-/2.00 hrs, dt=0.01 hrs, /201 points Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 170S: DA P1 (Impervious) Runoff Area=31,625 sf 100.00% Impervious Runoff Depth=6.44" Flow Length=450' Tc=3.0 min CN=0/98 Runoff=4.60 cfs 16,975 cf Subcatchment 174S: DA P2 (Impervious) Runoff Area=23,470 sf 100.00% Impervious Runoff Depth=6.44" Flow Length=450' Tc=4.9 min CN=0/98 Runoff=3.00 cfs 12,598 cf Subcatchment 178S: DA P3 (Pervious) Runoff Area=62,973 sf 0.00% Impervious Runoff Depth=0.66" Flow Length=316' Slope=0.0200'/' Tc=13.1 min CN=39/0 Runoff=0.27 cfs 3,449 cf Subcatchment 179S: DA P0 Pervious Runoff Area=336,250 sf 0.00% Impervious Runoff Depth=0.30" Flow Length=679' Tc=49.8 min CN=33/0 Runoff=0.28 cfs 8,387 cf Subcatchment 180S: DA P4 (Pervious) Runoff Area=76,971 sf 0.00% Impervious Runoff Depth=0.66" Flow Length=196' Slope=0.0100'/' Tc=14.8 min CN=39/0 Runoff=0.32 cfs 4,216 cf Subcatchment 181S: DA P6 (Impervious) Runoff Area=5,250 sf 100.00% Impervious Runoff Depth=6.44" Flow Length=150' Tc=1.4 min CN=0/98 Runoff=0.84 cfs 2,818 cf Pond 183P: WQ Infiltration Basin #1 Peak Elevation=99.23' Storage=16,706 cfs Inflow=4.63 cfs 21,191 cf Discarded=0.00 cfs 0 cf Primary=5.91 cfs 17,388 cf Outflow=5.91 cfs 17,388 cf Pond 184P: WQ Infiltration Basin #2 Peak Elevation=99.85' Storage=13,818 cfs Inflow=3.06 cfs 16,047 cf Discarded=0.00 cfs 0 cf Primary=1.97 cfs 12,492 cfs Outflow=1.97 cfs 12,492 cf Link 185L: POA Inflow=7.07 cfs 41,085 cf Primary=7.07 cfs 41,085 cf Total Runoff Area = 536,539 sf Runoff Volume = 48,444 cf Average Runoff Depth = 1.08" 88.75% Pervious = 476,194 sf 11.25% Impervious = 60,345 sf

Page 149 Download HTML

Summary for Subcatchment 170S: DA P1 (Impervious)

Runoff = 4.60 cfs @ 12.11 hrs, Volume= 16,975 cf, Depth= 6.44" Routed to Pond 183P : WQ 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 25-Year Rainfall=6.68"

Area (sf) CN Description

31,625 98 Paved parking, HSG A

31,625 98 100.00% Impervious Area

Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)

1.2 100 0.0200 1.42 Sheet Flow, Smooth surfaces n= 0.011 P2= 3.42"

1.8 350 0.0250 3.21 Shallow Concentrated Flow, Paved Kv= 20.3 fps

3.0 450 Total

Subcatchment 170S: DA P1 (Impervious)

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Summary for Subcatchment 174S: DA P2 (Impervious)

Runoff = 3.00 cfs @ 12.13 hrs, Volume= 12,598 cf, Depth= 6.44" Routed to Pond 184P : WQ Infiltration Basin #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 25-Year Rainfall=6.68"

Area (sf) CN Description

23,470 98 Paved parking, HSG A

23,470 98 100.00% Impervious Area

Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)

0.8 100 0.0500 2.05 Sheet Flow, Smooth surfaces n= 0.011 P2= 3.42"

4.1 350 0.0050 1.44 Shallow Concentrated Flow, Paved Kv= 20.3 fps

4.9 450 Total

Subcatchment 174S: DA P2 (Impervious)

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Summary for Subcatchment 178S: DA P3 (Pervious)

Runoff = 0.27 cfs @ 12.54 hrs, Volume= 3,449 cf, Depth= 0.66" Routed to Pond 184P : WQ Infiltration Basin #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 25-Year Rainfall=6.68"

Area (sf) CN Description

62,973 39 >75% Grass cover, Good, HSG A

62,973 39 100.00% Pervious Area

Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description

9.5 100 0.0200 0.18 Sheet Flow, Grass: Short n= 0.150 P2= 3.42"

3.6 216 0.0200 0.99 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps

13.1 316 Total

Subcatchment 178S: DA P3 (Pervious)

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Summary for Subcatchment 179S: DA P0 Pervious

Runoff = 0.28 cfs @ 14.71 hrs, Volume= Routed to Link 185L : POA 8,387 cf, Depth= 0.30"

8,387 cf, Depth= 0.30"

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 25-Year Rainfall=6.68"

Area (sf)CNDescription
236,87930Woods, Good, HSG A
99,37139>75% Grass cover, Good, HSG A
336,25033Weighted Average
336,25033100.00% Pervious Area
Tc (min)Length (feet)Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)
36.21000.0050 0.05
13.65790.0200 0.71
49.8679Total

Subcatchment 179S: DA P0 Pervious

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Summary for Subcatchment 180S: DA P4 (Pervious)

Runoff = 0.32 cfs @ 12.57 hrs, Volume= 4,216 cf, Depth= 0.66" Routed to Pond 183P : WQ 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 25-Year Rainfall=6.68"

Area (sf) CN Description

76,971 39 >75% Grass cover, Good, HSG A

76,971 39 100.00% Pervious Area

Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description

12.5 100 0.0100 0.13 Sheet Flow, Grass: Short n= 0.150 P2= 3.42"

2.3 96 0.0100 0.70 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps

14.8 196 Total

Subcatchment 180S: DA P4 (Pervious)

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Summary for Subcatchment 181S: DA P6 (Impervious)

Runoff = 0.84 cfs @ 12.10 hrs, Volume= 2,818 cf, Depth= 6.44" Routed to Link 185L : POA

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 25-Year Rainfall=6.68"

Area (sf) CN Description

5,250 98 Paved parking, HSG A

5,250 98 100.00% Impervious Area

Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description

0.8 100 0.0500 2.05 Sheet Flow,

0.6 50 0.0050 1.44 Smooth surfaces n= 0.011 P2= 3.42"

Paved Kv= 20.3 fps

1.4 150 Total

Shallow Concentrated Flow,

Subcatchment 181S: DA P6 (Impervious)

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Summary for Pond 183P: WQ Infiltration Basin #1

Inflow Area = 108,596 sf, 29.12% Impervious, Inflow Depth = 2.34" for 25-Year event

Inflow = 4.63 cfs @ 12.11 hrs, Volume= 21,191 cf

Outflow = 5.91 cfs @ 12.12 hrs, Volume= 17,388 cf, Atten= 0%, Lag= 0.5 min

Discarded = 0.00 cfs @ 0.00 hrs, Volume= 0 cf

Primary = 5.91 cfs @ 12.12 hrs, Volume= 17,388 cf

Routed to Link 185L : POA

Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Starting Elev= 97.00' Surf.Area= 6,008 sf Storage= 10,212 cf Peak Elev= 99.23' @ 12.12 hrs Surf.Area= 6,981 sf Storage= 16,706 cf (6,495 cf above start)

Plug-Flow detention time= 627.7 min calculated for 7,176 cf (34% of inflow)

Plug-Flow detention time= 627.7 min calculated for 7,176 cf (34% of inflow) Center-of-Mass det. time= 157.8 min (947.5 - 789.7)

VolumeInvertAvail.StorageStorage Description
#195.00'16,706 cfCustom Stage Data (Prismatic) Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
95.004,23100
96.005,0924,6624,662
97.006,0085,55010,212
98.006,9816,49516,706
DeviceRoutingInvertOutlet Devices
#1Primary97.60'15.0" Round Culvert to Subsurface Basin L= 35.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 95.00' / 97.60' S= -0.0743'' Cc= 0.900 n= 0.012 Corrugated PP, smooth interior, Flow Area= 1.23 sf
#2Device 197.00'4.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s)
#3Discarded95.00'3.100 in/hr Exfiltration X 0.00 over Surface area

Discarded OutFlow Max=0.00 cfs @ 0.00 hrs HW=97.00' (Free Discharge) 3=Exfiltration (Controls 0.00 cfs)

Primary OutFlow Max=5.86 cfs @ 12.12 hrs HW=99.21' (Free Discharge) 1=Culvert to Subsurface Basin (Inlet Controls 5.86 cfs @ 4.77 fps) 2=Sharp-Crested Rectangular Weir (Passes 5.86 cfs of 36.01 cfs potential flow)

Page 156 Download HTML

Pond 183P: WQ Infiltration Basin #1

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)

Inflow Outflow Discarded Primary

Page 157 Download HTML

Stage-Discharge for Pond 183P: WQ Infiltration Basin #1

Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)
95.000.000.000.0097.600.000.000.00
95.050.000.000.0097.650.010.000.01
95.100.000.000.0097.700.050.000.05
95.150.000.000.0097.750.110.000.11
95.200.000.000.0097.800.190.000.19
95.250.000.000.0097.850.300.000.30
95.300.000.000.0097.900.420.000.42
95.350.000.000.0097.950.570.000.57
95.400.000.000.0098.000.730.000.73
95.450.000.000.0098.050.910.000.91
95.500.000.000.0098.101.100.001.10
95.550.000.000.0098.151.310.001.31
95.600.000.000.0098.201.540.001.54
95.650.000.000.0098.251.770.001.77
95.700.000.000.0098.302.010.002.01
95.750.000.000.0098.352.270.002.27
95.800.000.000.0098.402.530.002.53
95.850.000.000.0098.452.790.002.79
95.900.000.000.0098.503.060.003.06
95.950.000.000.0098.553.320.003.32
96.000.000.000.0098.603.580.003.58
96.050.000.000.0098.653.840.003.84
96.100.000.000.0098.704.080.004.08
96.150.000.000.0098.754.310.004.31
96.200.000.000.0098.804.520.004.52
96.250.000.000.0098.854.670.004.67
96.300.000.000.0098.904.850.004.85
96.350.000.000.0098.955.030.005.03
96.400.000.000.0099.005.200.005.20
96.450.000.000.0099.055.370.005.37
96.500.000.000.0099.105.530.005.53
96.550.000.000.0099.155.680.005.68
96.600.000.000.0099.205.830.005.83
96.650.000.000.00
96.700.000.000.00
96.750.000.000.00
96.800.000.000.00
96.850.000.000.00
96.900.000.000.00
96.950.000.000.00
97.000.000.000.00
97.050.000.000.00
97.100.000.000.00
97.150.000.000.00
97.200.000.000.00
97.250.000.000.00
97.300.000.000.00
97.350.000.000.00
97.400.000.000.00
97.450.000.000.00
97.500.000.000.00
97.550.000.000.00
Page 158 Download HTML

Stage-Area-Storage for Pond 183P: WQ Infiltration Basin #1

Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
95.004,231097.606,59213,991
95.054,27421397.656,64014,322
95.104,31742797.706,68914,655
95.154,36064497.756,73814,991
95.204,40386397.806,78615,329
95.254,4461,08597.856,83515,670
95.304,4891,30897.906,88416,013
95.354,5321,53497.956,93216,358
95.404,5751,76198.006,98116,706
95.454,6181,99198.056,98116,706
95.504,6622,22398.106,98116,706
95.554,7052,45798.156,98116,706
95.604,7482,69498.206,98116,706
95.654,7912,93298.256,98116,706
95.704,8343,17398.306,98116,706
95.754,8773,41598.356,98116,706
95.804,9203,66098.406,98116,706
95.854,9633,90798.456,98116,706
95.905,0064,15798.506,98116,706
95.955,0494,40898.556,98116,706
96.005,0924,66298.606,98116,706
96.055,1384,91798.656,98116,706
96.105,1845,17598.706,98116,706
96.155,2295,43698.756,98116,706
96.205,2755,69898.806,98116,706
96.255,3215,96398.856,98116,706
96.305,3676,23098.906,98116,706
96.355,4136,50098.956,98116,706
96.405,4586,77299.006,98116,706
96.455,5047,04699.056,98116,706
96.505,5507,32299.106,98116,706
96.555,5967,60199.156,98116,706
96.605,6427,88299.206,98116,706
96.655,6878,165
96.705,7338,450
96.755,7798,738
96.805,8259,028
96.855,8719,321
96.905,9169,615
96.955,9629,912
97.006,00810,212
97.056,05710,513
97.106,10510,817
97.156,15411,124
97.206,20311,433
97.256,25111,744
97.306,30012,058
97.356,34912,374
97.406,39712,693
97.456,44613,014
97.506,49513,337
97.556,54313,663
Page 159 Download HTML

Summary for Pond 184P: WQ Infiltration Basin #2

Inflow Area =86,443 sf,27.15% Impervious,Inflow Depth =2.23" for 25-Year event
Inflow =3.06 cfs @12.13 hrs,Volume=16,047 cf
Outflow =1.97 cfs @12.37 hrs,Volume=12,492 cf, Atten= 35%, Lag= 14.4 min
Discarded =0.00 cfs @0.00 hrs,Volume=0 cf
Primary =1.97 cfs @12.37 hrs,Volume=12,492 cf
Routed to Link 185L : POA

Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Starting Elev= 93.00' Surf.Area= 4,067 sf Storage= 6,668 cf Peak Elev= 99.85' @ 12.37 hrs Surf.Area= 5,438 sf Storage= 13,818 cf (7,151 cf above start)

Plug-Flow detention time= 617.6 min calculated for 5,824 cf (36% of inflow) Center-of-Mass det. time= 196.8 min ( 991.9 - 795.2 )

VolumeInvertAvail.StorageStorage Description
#191.00'13,818 cfCustom Stage Data (Prismatic) Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
91.002,62800
92.003,3202,9742,974
93.004,0673,6946,668
94.005,0104,53911,206
94.505,4382,61213,818
DeviceRoutingInvertOutlet Devices
#1Primary93.80'6.0" Round Culvert to Subsurface Basin L= 35.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 92.00' / 93.80' S= -0.0514'' Cc= 0.900 n= 0.012 Corrugated PP, smooth interior, Flow Area= 0.20 sf
#2Device 193.00'4.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s)
#3Discarded91.00'1.050 in/hr Exfiltration X 0.00 over Surface area

Discarded OutFlow Max=0.00 cfs @ 0.00 hrs HW=93.00' (Free Discharge) 3=Exfiltration (Controls 0.00 cfs)

Primary OutFlow Max=1.96 cfs @ 12.37 hrs HW=99.75' (Free Discharge) 1=Culvert to Subsurface Basin (Outlet Controls 1.96 cfs @ 9.97 fps) 2=Sharp-Crested Rectangular Weir (Passes 1.96 cfs of 149.56 cfs potential flow)

Page 160 Download HTML

Pond 184P: WQ Infiltration Basin #2

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)

Inflow Outflow Discarded Primary

Page 161 Download HTML

Stage-Discharge for Pond 184P: WQ Infiltration Basin #2

Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)
91.000.000.000.0096.201.240.001.24
91.100.000.000.0096.301.270.001.27
91.200.000.000.0096.401.290.001.29
91.300.000.000.0096.501.320.001.32
91.400.000.000.0096.601.340.001.34
91.500.000.000.0096.701.370.001.37
91.600.000.000.0096.801.390.001.39
91.700.000.000.0096.901.410.001.41
91.800.000.000.0097.001.430.001.43
91.900.000.000.0097.101.460.001.46
92.000.000.000.0097.201.480.001.48
92.100.000.000.0097.301.500.001.50
92.200.000.000.0097.401.520.001.52
92.300.000.000.0097.501.540.001.54
92.400.000.000.0097.601.560.001.56
92.500.000.000.0097.701.580.001.58
92.600.000.000.0097.801.600.001.60
92.700.000.000.0097.901.620.001.62
92.800.000.000.0098.001.640.001.64
92.900.000.000.0098.101.660.001.66
93.000.000.000.0098.201.680.001.68
93.100.000.000.0098.301.700.001.70
93.200.000.000.0098.401.720.001.72
93.300.000.000.0098.501.740.001.74
93.400.000.000.0098.601.760.001.76
93.500.000.000.0098.701.780.001.78
93.600.000.000.0098.801.790.001.79
93.700.000.000.0098.901.810.001.81
93.800.000.000.0099.001.830.001.83
93.900.030.000.0399.101.850.001.85
94.000.110.000.1199.201.860.001.86
94.100.230.000.2399.301.880.001.88
94.200.360.000.3699.401.900.001.90
94.300.470.000.4799.501.920.001.92
94.400.560.000.5699.601.930.001.93
94.500.630.000.6399.701.950.001.95
94.600.700.000.7099.801.960.001.96
94.700.760.000.76
94.800.800.000.80
94.900.840.000.84
95.000.880.000.88
95.100.910.000.91
95.200.950.000.95
95.300.980.000.98
95.401.010.001.01
95.501.050.001.05
95.601.080.001.08
95.701.110.001.11
95.801.130.001.13
95.901.160.001.16
96.001.190.001.19
96.101.220.001.22
Page 162 Download HTML

Page 49

Stage-Area-Storage for Pond 184P: WQ Infiltration Basin #2

Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
91.002,628096.205,43813,818
91.102,69726696.305,43813,818
91.202,76653996.405,43813,818
91.302,83682096.505,43813,818
91.402,9051,10796.605,43813,818
91.502,9741,40196.705,43813,818
91.603,0431,70196.805,43813,818
91.703,1122,00996.905,43813,818
91.803,1822,32497.005,43813,818
91.903,2512,64597.105,43813,818
92.003,3202,97497.205,43813,818
92.103,3953,31097.305,43813,818
92.203,4693,65397.405,43813,818
92.303,5444,00497.505,43813,818
92.403,6194,36297.605,43813,818
92.503,6944,72797.705,43813,818
92.603,7685,10097.805,43813,818
92.703,8435,48197.905,43813,818
92.803,9185,86998.005,43813,818
92.903,9926,26598.105,43813,818
93.004,0676,66898.205,43813,818
93.104,1617,07998.305,43813,818
93.204,2567,50098.405,43813,818
93.304,3507,93098.505,43813,818
93.404,4448,37098.605,43813,818
93.504,5398,81998.705,43813,818
93.604,6339,27798.805,43813,818
93.704,7279,74598.905,43813,818
93.804,82110,22399.005,43813,818
93.904,91610,71099.105,43813,818
94.005,01011,20699.205,43813,818
94.105,09611,71199.305,43813,818
94.205,18112,22599.405,43813,818
94.305,26712,74899.505,43813,818
94.405,35213,27899.605,43813,818
94.505,43813,81899.705,43813,818
94.605,43813,81899.805,43813,818
94.705,43813,818
94.805,43813,818
94.905,43813,818
95.005,43813,818
95.105,43813,818
95.205,43813,818
95.305,43813,818
95.405,43813,818
95.505,43813,818
95.605,43813,818
95.705,43813,818
95.805,43813,818
95.905,43813,818
96.005,43813,818
96.105,43813,818
Page 163 Download HTML

Page 50

Summary for Link 185L: POA

Inflow Area = 536,539 sf, 11.25% Impervious, Inflow Depth = 0.92" for 25-Year event Inflow = 7.07 cfs @ 12.10 hrs, Volume= 41,085 cf Primary = 7.07 cfs @ 12.10 hrs, Volume= 41,085 cf, Atten= 0%, Lag= 0.0 min

Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs

Link 185L: POA

Page 164 Download HTML

APPENDIX G

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Duration of infiltration period, t = (Volume of runoff to be infiltrated (cf) × 12 in/ft3)/(Infiltration area (sf)) × Recharge rate (in/hr)

Basininfiltration volume (cf)Basin Surface Area (sf)Recharge Rate (in/hr)t (hr)
Surface #13490142313.131.9
Surface #21858626281.0580.8
Subsurface (TYP)30805333.2521.3
Page 166 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 167 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 168 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 169 Download HTML

APPENDIX H

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Haler Consulting LLC 640 Herman Road Unit 1 Jackson, New Jersey 08527

September 4, 2025

Owner/Location: Prop. subdivision 102 Sams Road Jackson, NJ

SOIL LOG

Test Pit #1 9-04-25 el. 98.0

0'- 12" 10YR3/1 Very Dark Gray, Loose, SG, Topsoil

12"-50" 10YR5/6 Yellowish Brown, Medium, Loose, Gravelly sand

50"-80" 7.5YR6/6 Reddish Yellow, Medium, Loose, Loamy Sand PT-1 @ 4.5 FEET = 12.2 IN/HR(K4)

80”–100” 7.5YR6/8 Reddish Yellow, Loose, Very Fine, Granular, Sand Mottles @ 87 inches Water @92 inches

PT-1@4.5FEET; = 12.2IN/HR(K4)

NOTE:

Estimated Seasonal High Water Table @ 87 inches (el. 90.3).

Eric Halpert (NJPE#55771)

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Haler Consulting LLC 640 Herman Road Unit 1 Jackson, New Jersey 08527

September 4, 2025

Owner/Location: Prop. subdivision 102 Sams Road Jackson, NJ

SOIL LOG

Test Pit #2 9-04-25 el. 96.8

0'- 10" 10YR3/3 Dark Brown, Loose, SG, Topsoil

12"- 40" 10YR5/8 Yellowish Brown, Medium, Loose, Gravelly sand

40"- 75" 7.5YR4/6 Strong Brown, Medium, Loose, Loamy Sand PT-2 @ 4.5 FEET = 14.5 IN/HR(K4)

75”–100” 7.5YR4/4 Brown, Loose, Very Fine, Granular, Sand Mottles @ 85 inches Water @95 inches

PT-2 @ 4.5 FEET = 14.5 IN/HR(K4)

NOTE:

Estimated Seasonal High Water Table @ 85 inches (el. 89.7).

Eric Halpert (NJPE#55771)

Page 172 Download HTML

TEST PIT LOCATION MAP PRELIMINARY AND MAJOR SUBDIVISION 102 SAMS ROAD BLOCK 20101 LOT 29&30 TOWNSHIP OF JACKSON, OCEAN COUNTY, NEW JERSEY APPLICANT: SHAKKI LLC

PROJECT NO. 25-018

HALER CONSULTING SITE ENGINEERING

SCALE 1" = 150'

DATE 10-06-2025

640 HERMAN ROAD, UNIT 1. JACKSON, NEW JERSEY 08527 PH.(732) 806-7541 F.(732) 806-7439 OFFICE@HALERCONSULTING.COM COA 24GA28321300

SHEET NO. 1 OF 1

Page 173 Download HTML
Page 174 Download HTML

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 23, Aug 28, 2025

Soil map units are labeled (as space allows) for map scales 1:50,000 or larger.

Date(s) aerial images were photographed: Jun 4, 2022—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

10/20/2025 Page 2 of 4

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Hydrologic Soil Group

Map unit symbolMap unit nameRatingAcres in AOIPercent of AOI
DocBODowner loamy sand, 0 to 5 percent slopes, Northern Tidewater AreaA5.529.5%
MumAMullica sandy loam, 0 to 2 percent slopesA/D2.815.0%
SacBOSassafras sandy loam, 2 to 5 percent slopes, Northern Tidewater AreaB10.455.5%
Totals for Area of Interest18.7100.0%

Natural Resources Conservation Service

Web Soil Survey National Cooperative Soil Survey

10/20/2025 Page 3 of 4

Page 176 Download HTML

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

10/20/2025 Page 4 of 4

Page 177 Download HTML
Page 178 Download HTML

MAP LEGEND

Area of Interest (AOI) Area of Interest (AOI) Spoil Area

Area of Interest (AOI) Stony Spot

Soils

Soil Map Unit Polygons Very Stony Spot

Soil Map Unit Lines Wet Spot

Soil Map Unit Points Other

Special Point Features

Blowout Water Features

Borrow Pit Stream and Canals

Clay Spot Transportation

◇ Closed Depression Rails

✗ Gravel Pit Interstate Highways

⁂ Gravelly Spot US Routes

❄ Landfill Major Roads

Lava Flow Local Roads

Marsh or swamp Background

❄ Mine or Quarry Aerial Photography

Miscellaneous Water

Perennial Water

Rock Outcrop

Saline Spot

❄ Sandy Spot

Severely Eroded Spot

Sinkhole

Slide or Slip

Sodic Spot

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 23, Aug 28, 2025

Soil map units are labeled (as space allows) for map scales 1:50,000 or larger.

Date(s) aerial images were photographed: Jun 4, 2022—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

10/20/2025 Page 2 of 3

Page 179 Download HTML

Map Unit Legend

Map Unit SymbolMap Unit NameAcres in AOIPercent of AOI
DocBODowner loamy sand, 0 to 5 percent slopes, Northern Tidewater Area5.529.5%
MumAMullica sandy loam, 0 to 2 percent slopes2.815.0%
SacBOSassafras sandy loam, 2 to 5 percent slopes, Northern Tidewater Area10.455.5%
Totals for Area of Interest18.7100.0%

Natural Resources Conservation Service

Web Soil Survey National Cooperative Soil Survey

10/20/2025 Page 3 of 3

Page 180 Download HTML

APPENDIX I

Page 181 Download HTML

GRAPHIC SCALE

Page 182 Download HTML

GRAPHIC SCALE

PH.(732) 806-7541 F.(732) 806-7439 OFFICE@HALERCONSULTING.COM COA 24GA28321300

PROFESSIONAL ENGINEER AND PLANNER NJ PE LIC. NO. 55771 NJ PP LIC. NO. 6488

  • S16° 38' 48.23"W 631.90 92 7.719 ACRES D.A. P0 89 45 BFE: 92.00' SINGLE FAMILY DWELLING FFE: 102.00' 4000.00 SF PROPOSED 2.5 STORY 96 9 .8 3 8 = 97 L L = 87 .7 4 L N44° 56' 29.77"W = 7 7. 30.53 97 0 3 98 98 99 100 101 L=9 CONCENTRATED @ 3.00% Tc 290 LF SHALLOW 89 BFE: 95.00' FFE: 105.00' SINGLE FAMILY DWELLING 4000.00 SF PROPOSED 2.5 STORY 99 98
  • 93 93 CONCENTRATED @ 4.00% Tc 90 LF SHALLOW 97 98 99 100 101 1.767 ACRES D.A. P4 102 103 101 CONCENTRATED @ 1.00% 102 Tc 96 LF SHALLOW FLOW @ 1.00% Tc 100 LF SHEET 89 BFE: 98.50' FFE: 108.50' 4000.00 SF SINGLE FAMILY DWELLING PROPOSED 2.5 STORY 103 103
  • FLOW @ 5.00% Tc 100 LF SHEET 98 98 99 100 101 102 103 104 105
Page 183 Download HTML

GRAPHIC SCALE

COLLECTION DRAINAGE AREA MAP PLAN PRELIMINARY AND MAJOR SUBDIVISION 102 SAMS ROAD BLOCK 20101 LOT 29&30 TOWNSHIP OF JACKSON, OCEAN COUNTY, NEW JERSEY APPLICANT: SHAKKI LLC

PROJECT NO

C1002

  • S16° 38' 48.23"W 631.90 45 96 0.399 ACRES D.A. I2 97 101 98
  • 92 97 98 89 BFE: 95.00' FFE: 105.00' SINGLE FAMILY DWELLING 4000.00 SF PROPOSED 2.5 STORY
  • 93 100 101 103 101 102 89 BFE: 98.50' FFE: 108.50' 4000.00 SF SINGLE FAMILY DWELLING PROPOSED 2.5 STORY