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doc11891 2026-02-SWM-REPORT-Compiled.pdf
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"text": "The subject site is located at 30 South Hope Chapel Road (C.R. 547) in the Township of Jackson, Ocean County, New Jersey. The site is identified as Block 20901, Lot 15 on the Township of Jackson Tax Map Sheet #209. The subject site is currently developed with one 2,164 SF single family home, three one-story garages and a contractor's yard. The property is bounded to the north by residential uses with wooded areas, commercial uses and East Veterans Highway beyond, to the south by Garden Street with residential uses beyond, to the east by S. Hope Chapel (CR 547) with commercial uses beyond, and to the west by residential uses with wooded areas beyond."
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"text": "The proposed project consists of the development of a 3-story office building. The office building will consist of a total footprint of 4,937 SF, and a total square footage of 14,979 SF. The proposed project will also include associated site improvements including parking areas, landscaping, lighting, stormwater management facilities, and utilities."
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"text": "This report has been prepared to define and analyze the stormwater drainage conditions that would occur as a result of the development of the subject site. Based upon the fact that the proposed development will result in more than 1 acre of land disturbance, increase in impervious coverage by more than 1/4 acre, and increase motor vehicle surfaces by more than 1/4 acre, this project is classified as a “major development” as defined in NJAC 7:8 and NJAC 7:50. Therefore, the proposed development has been designed to meet the stormwater water runoff quantity, quality, and groundwater recharge standards, as set forth by the Township of Jackson Land Use Ordinance, NJAC 7:8 and NJAC 7:50."
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"text": "The hydrology for the site was calculated using the NRCS Runoff Equation and Dimensionless Unit Hydrograph as noted in Part 630, Hydrology National Engineering Handbook. The following particular references were used:"
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"text": "Based on the methodology and data noted above a hydrologic evaluation of the NJDEP Water Quality, 2-, 10-, and 100-year storm event was prepared."
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"text": "August 2023\nLast Revised February 2026",
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Page 5
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1 · HEADING
2 · TEXT
3 · HEADING
4 · TEXT
5 · HEADING
6 · TABLE
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23 · CAPTION
24 · TABLE
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41 · HEADING
42 · TEXT
43 · FOOTER
44 · FOOTER
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Page 6
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1 · CAPTION
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19 · CAPTION
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"text": "1980 Swarthmore LLC\nDEC #3342-99-007",
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"text": "August 2023\nLast Revised February 2026",
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Page 8
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15 · CAPTION
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"text": "5. STORMWATER MANAGEMENT SYSTEM DESIGN",
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"text": "A summary of each basin's water surface elevation (WSEL) and outflow rated for the Water Quality, 2-, 10-, and 100-year storm event for current conditions are provided below. These WSELs and outflows assume normal operating conditions for each basin. Routing calculations for the basin are included in the Appendix."
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"text": "Storm Event (years)\n2-Year Current\n2- Year Projected\n10-Year Current\n10- Year Projected\n100-Year Current\n100- Year Projected\nWQ Storm",
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"text": "Water Surface Elevation (ft)\n117.82\n117.98\n118.37\n118.68\n119.50\n120.00\n117.70",
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"text": "The basin noted above has been designed to comply with the stormwater runoff quantity, quality, and groundwater recharge requirements for the proposed development as applicable. The basin has been designed in accordance with NJAC 7:8, NJAC 7:50 and the New Jersey Stormwater Best Management Practices. The table below summarizes the design considerations for each basin, see the Site Plan details for additional information."
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"text": "1980 Swarthmore LLC\nDEC #3342-99-007",
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Page 9
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31 · TEXT
32 · CAPTION
33 · TABLE
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Table integrity:
1 of 26 cells don't match the text layer at their coordinates.
r2c0 (57%): “Min. Storage Volume below 1^{{st}} Orifice (Net Increase of…”
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Page 10
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1 · HEADER
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Page 10 JSON
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"text": "The project has been designed to satisfy the groundwater recharge requirements set forth in NJAC 7:50-56.84(a)6.iv(1) by infiltrating the total runoff generated from the net increase in impervious surfaces by a 10-year, 24-hour storm. HydroCAD Stormwater Modeling Software has been utilized to verify satisfaction of the recharge requirement. Groundwater Recharge Calculations are included within the appendix of this report."
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"text": "Groundwater Recharge Summary",
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"text": "Pre-Development 10-Year Impervious Volume\nPost-Development 10-Year Impervious Volume\nNet Volume to be Infiltrated\nVolume below Lowest Orifice",
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"text": "0.046 AC-FT\n0.366 AC-FT\n0.320 AC-FT\n0.392 AC-FT",
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"text": "10. GROUNDWATER MOUNDING",
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"text": "The proposed underground infiltration basin has been designed to retain and infiltrate the total runoff volume generated from the net increase in impervious surfaces by the 10-year, 24-hour storm, per NJAC 7:50 requirements. The total volume that is required to be retained and infiltrated is 13,939 cubic feet. The volume requirement is met by modeling exfiltration within HydroCAD for the proposed underground infiltration basin. This provides approximately 17,075 cubic feet of water to be infiltrated during the 10-year projected rainfall event. When utilizing the infiltrated volume the maximum mound during the 10-year storm is 8.664 feet. Seasonal High Groundwater was not encountered during the field tests, therefore the termination elevation for SPP-1 (105.8) was used to determine the approximate height of the mound during the 10-year storm. The mound during the 10-year storm could reach a maximum elevation of 114.46 which is 3.04 feet below the"
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Page 11
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"text": "proposed bottom of basin (elevation 117.50). Therefore, no negative impacts are anticipated. The ground water mounding calculations can be found in the appendix of this report."
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"type": "heading",
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"text": "11. PINELANDS NITROGEN REMOVAL REQUIREMENT",
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"text": "The project has been designed to satisfy the Nitrogen removal requirements set forth in NJAC 7:50 through the use of an underground basin with a manufactured treatment device. The grading and stormwater conveyance system has been designed to route runoff from motor vehicle surface, landscaped areas and roofs to a proposed underground basin with a MTD to comply with the required nitrogen removal of 53.2%, the proposed Nitrogen removal rate is 59.0%. Further it is noted that the proposed roof and sidewalk areas are not generating nitrogen; therefore 100% nitrogen removal has been provided within those areas. The Pinelands Nitrogen Removal calculations and Exhibit can be found in the Appendix of this report."
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{
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"order": 4,
"type": "heading",
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"text": "12. STORM SEWER DESIGN",
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{
"id": "p11.5",
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"type": "text",
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"text": "The proposed stormwater management collection system has been designed to have hydraulic capacity for the 25-year storm event. The Rational Method was used to determine inflow rates to each structure and Manning's Equation was used to establish pipe capacity. In accordance with the NJDEP BMP Manual Chapter 5, weighted runoff coefficients were computed for each drainage area based on land cover and hydrologic soil group. The time of concentration was calculated for each area. Rainfall intensity was based upon the Trenton Rainfall intensity curve. Supporting calculations and the Inlet Drainage Area Map can be found in the appendix."
},
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"order": 6,
"type": "heading",
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"text": "13. SOIL EROSION AND SEDIMENT CONTROL COMPLIANCE",
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"text": "The project has been designed to comply with the Standards for Soil Erosion and Sediment Control in New Jersey. Soil erosion control measures such as a stabilized construction entrance, inlet protection and silt fence are shown on the plans. In addition, conduit outlet protection is proposed at the outflow point of the storm sewer system with supporting calculations included in the Appendix of this report. Finally, this project has been designed to satisfy the off-site stability standards set forth in the Standards for Soil Erosion and Sediment Control in New Jersey."
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"text": "As noted previously, the proposed peak flows meet the necessary requirements set forth in NJAC 7:8-5.6 and NJAC 7:50-56.84(a)6), thereby achieving off-site stability."
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"text": "Special consideration shall be given to the use of infiltration for peak flow modifications as follows:"
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"type": "footer",
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"text": "1980 Swarthmore LLC\nDEC #3342-99-007",
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Page 12
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"text": "Point Of Discharge Stability Analysis",
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"text": "When infiltration practices are proposed, an alternate analysis (failure analysis) must be provided which ignores infiltration (no dead storage volume available, no static or dynamic infiltration loss rates in the routing calculations, etc.) and demonstrates that no erosion will occur at the point of discharge if infiltration fails to function. Flow rates based solely upon basin inlet and outlet hydraulics must be used in comparison to Table 21-1 (below) to document a stable outlet."
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"text": "A failure analysis has been provided within the Appendix of this report, which ignores infiltration and demonstrates that no erosion will occur at the point of discharge if infiltration fails to function. To summarize, when disregarding any infiltration and dead storage within the proposed basin the peak outflow for the 25 year storm is 1.06 CFS which complies with the point discharge requirements within the Standards for Soil Erosion and Sediment Control in New Jersey."
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"text": "Downstream (Off-Site) Stability Analysis",
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"text": "Infiltration may be used to meet peak flow reduction requirements (outlined below) for the purposes of documenting stability of the downstream receiving channel, provided that the complete loss of infiltration function does not result in an increase in peak flow values above the predevelopment levels."
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"text": "Analysis below the points of discharge to the downstream receiving channel have been provided below."
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"text": "Point of Discharge - Methods for Achieving Stability"
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"text": "1. Well-defined waterway below the point of discharge:",
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"text": "There is a well-defined waterway (Dove Mill Branch Tributary) below the point of discharge; therefore, this method will be used."
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"type": "text",
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"text": "A. Retain pre-developed runoff characteristics. Do not increase the rate of runoff from the development."
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"text": "As documented in the subsections above, there is a decrease in the rate of runoff from the development to all points of analysis."
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"text": "B. Analyze the waterway or channel for stability under the planned rate of discharge using the Standard for Grassed Waterways or Standard for Channel Stabilization, as appropriate. Peak flows from the 2-and 10-year storms shall be analyzed."
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"text": "1980 Swarthmore LLC\nDEC #3342-99-007",
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Page 13
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"text": "As noted above, the proposed peak flows meet the above reductions, thereby achieving off-site stability, therefore; this section is not applicable."
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"text": "C. Modify the waterway or channel to a stable design condition."
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"text": "As noted above, the proposed peak flows meet the above reductions, thereby achieving off-site stability, therefore; this section is not applicable."
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"text": "Downstream of the Point of Discharge (Off-Site Stability Analysis)",
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"text": "In addition to ensuring erosion does not occur at the point of discharge, areas downstream and beyond the immediate area of site development may be damaged due to erosive forces resulting from extended duration of hydrograph peak flows. An unintended consequence of the practice of detaining and slowly releasing stormwater is the ability for peak flows to be sustained for longer periods of time, offering an opportunity for upstream discharges to coincide with project site discharges. The resulting combined discharge may be equal to or even exceed that of the pre-development condition."
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"text": "To limit the potential for such an occurrence the designer may choose either of two approaches for downstream stability protection:"
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"text": "1. Examine hydraulic characteristics of the receiving stream channel considering upstream discharge in combination with site discharge to assess channel stability. The scope and scale of the analysis shall be appropriate to the scale of the project and the post development peak discharge rate and volume. Of particular concern are hydraulic control points, (culverts, bridges, etc.), bends in streams and sudden changes in channel cross sections downstream of the discharge point. The following may be utilized to assess stability:"
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"text": "The proposed design utilizes approach 2 as described below."
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"text": "2. In lieu of performing a comprehensive watershed analysis, design a detention facility that reduces peak flows to the following levels. Infiltration may be used to meet these criteria:"
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"text": "2-year storm – 50% of the predevelopment peak"
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"text": "10-year storm – 75% of the predevelopment peak"
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Page 14
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"text": "The post-construction runoff hydrographs for the current and projected two-, 10-, and 100-year storm events do not exceed, at any point in time, the pre-construction runoff hydrographs for the same storm events."
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Page 25
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Table integrity:
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r2c0 (0%): “Reach routing by Stor-Ind+Trans method - Pond routing by St…”
r3c0 (0%): “Subcatchment3S: Ex. Study Area West”
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Page 26
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Page 27
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1 · HEADER
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44 · CAPTION
45 · FIGURE
46 · CAPTION
47 · TABLE
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56 · HEADING
57 · TEXT
58 · TEXT
59 · TABLE
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87 · CAPTION
88 · CAPTION
89 · FIGURE
90 · FOOTNOTE
91 · FOOTNOTE
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Page 27 JSON
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Page 28
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23 · CAPTION
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25 · TABLE
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40 · TABLE
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68 · CAPTION
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70 · FIGURE
71 · FIGURE
72 · FOOTNOTE
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Page 29
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Page 30
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81 · CAPTION
82 · FIGURE
83 · CAPTION
84 · FOOTNOTE
85 · FOOTNOTE
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Page 30 JSON
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Page 31
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1 · HEADER
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5 · TABLE
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26 · CAPTION
27 · FIGURE
28 · TABLE
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37 · HEADING
38 · TABLE
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50 · TEXT
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52 · TABLE
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65 · CAPTION
66 · TEXT
67 · TABLE
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Page 31 JSON
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"text": "Summary for Pond 21P: Basin A Routing (StormBrixx)",
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"text": "0.740 ac, 97.30% Impervious, Inflow Depth = 3.10\" for 2-Yea…"
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"attrs": {
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"col": 1,
"rowspan": 1,
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"type": "table_cell",
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Page 32
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1 · HEADER
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7 · FIGURE
8 · CAPTION
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11 · FOOTER
12 · FOOTNOTE
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"text": "2026-02 Existing and Proposed NOAA 24-hr D 2-Year-Current Rainfall=3.42\"\nPrepared by Dynamic Engineering Printed 2/10/2026\nHydroCAD® 10.20-8a s/n 08640 © 2025 HydroCAD Software Solutions LLC Page 21",
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Page 37
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1 · HEADER
2 · HEADING
3 · TEXT
4 · TEXT
5 · TABLE
6
7
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36 · CAPTION
37 · FIGURE
38 · FIGURE
39 · TABLE
40
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46
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48 · HEADING
49 · TEXT
50 · TEXT
51 · TABLE
52
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91 · CAPTION
92 · FIGURE
93 · CAPTION
94 · FOOTNOTE
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Page 38
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65 · CAPTION
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Page 39
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1 · HEADER
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4 · TEXT
5 · TEXT
6 · TABLE
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52 · CAPTION
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56 · HEADING
57 · TEXT
58 · TEXT
59 · TABLE
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Page 40
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1 · HEADER
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60 · CAPTION
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63 · FOOTNOTE
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Page 41
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"text": "0.0300 0.20",
"attrs": {
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"col": 2,
"rowspan": 1,
"colspan": 1
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},
{
"id": "p41.12.16",
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"bbox": {
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"text": "Sheet Flow, A-B",
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"text": "Grass: Short n= 0.150 P2= 4.04\"",
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"text": "Subcatchment 19S: Study Area Road Undetained (Perv)",
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"text": "0.8 207 Total, Increased to minimum $ T_{c} = 10.0 \\, min $",
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},
{
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"text": "4.8 58 Total, Increased to minimum $ T_{c} = 10.0 \\, min $",
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],
"excluded_furniture": {
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}
Page 42
51 item(s)
JSON
caption (1)
figure (1)
footer (1)
header (2)
heading (2)
table (3)
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1 · HEADER
2 · HEADER
3 · HEADING
4 · TABLE
5
6
7
8
9
10
11
12
13 · TEXT
14 · TABLE
15
16
17
18
19
20
21
22
23
24
25
26
27 · CAPTION
28 · TEXT
29 · TABLE
30
31
32
33
34
35
36
37
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40
41
42
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45
46
47
48 · HEADING
49 · TEXT
50 · FIGURE
51 · FOOTER
Table integrity:
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r0c0 (0%): “Inflow Area = 0.740 ac, 97.30% Impervious, Inflow Depth = 3…”
r1c0 (0%): “Inflow = 1.81 cfs @ 12.19 hrs, Volume= 0.228 af”
r2c0 (0%): “Outflow = 0.70 cfs @ 12.63 hrs, Volume= 0.228 af, Atten= 62…”
r3c0 (0%): “Discarded = 0.70 cfs @ 12.63 hrs, Volume= 0.228 af”
Table integrity:
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r0c0 (0%): “Volume”
r0c1 (0%): “Invert”
r0c2 (0%): “Avail.Storage”
r0c3 (0%): “Storage Description”
Page 42 JSON
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"text": "2026-02 Existing and Proposed NOAA 24-hr D 2-Year-Projected Rainfall=4.04\"\nPrepared by Dynamic Engineering Printed 2/10/2026\nHydroCAD® 10.20-8a s/n 08640 © 2025 HydroCAD Software Solutions LLC Page 42",
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"text": "Summary for Pond 21P: Basin A Routing (StormBrixx)",
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"text": "Outflow = 0.70 cfs @ 12.63 hrs, Volume= 0.228 af, Atten= 62…"
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"col": 0,
"coverage": 0.25,
"text": "Routed to Link 14L : Study Area West (Total)"
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"text": "Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= …"
},
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"coverage": 0.18,
"text": "Peak Elev= 117.98' @ 12.63 hrs Surf.Area= 3,001 sf Storage=…"
}
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"children": [
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"attrs": {
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"attrs": {
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"col": 0,
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"attrs": {
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"col": 0,
"rowspan": 1,
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"attrs": {
"row": 4,
"col": 0,
"rowspan": 1,
"colspan": 1
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},
{
"id": "p42.4.6",
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"type": "table_cell",
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"col": 0,
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"b": 404.31
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"attrs": {
"row": 6,
"col": 0,
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"colspan": 1
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"type": "table_cell",
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"t": 404.31,
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"text": "Peak Elev= 117.98' @ 12.63 hrs Surf.Area= 3,001 sf Storage= 1,394 cf",
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},
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"col": 0,
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"attrs": {
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"attrs": {
"row": 2,
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"text": "8,729 cf",
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"text": "Storage Group A created with Chamber Wizard"
},
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"text": "Device",
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"attrs": {
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"type": "table_cell",
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"text": "Invert",
"attrs": {
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"rowspan": 1,
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"order": 33,
"type": "table_cell",
"bbox": {
"l": 278.46,
"t": 291.36,
"r": 359.04,
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"text": "Outlet Devices",
"attrs": {
"row": 0,
"col": 3,
"rowspan": 1,
"colspan": 1,
"column_header": true,
"header_source": "heuristic"
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},
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"id": "p42.9.5",
"order": 34,
"type": "table_cell",
"bbox": {
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"r": 117.3,
"b": 251.76
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"text": "#1",
"attrs": {
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"col": 0,
"rowspan": 1,
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},
{
"id": "p42.9.6",
"order": 35,
"type": "table_cell",
"bbox": {
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"text": "Primary",
"attrs": {
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"col": 1,
"rowspan": 1,
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"text": "117.50'",
"attrs": {
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"type": "table_cell",
"bbox": {
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"text": "15.0\" Round Culvert\\nL= 22.0' RCP, groove end projecting, Ke= 0.200\\nInlet / Outlet Invert= 117.50'/ 117.40' S= 0.0045'/' Cc= 0.900\\nn= 0.013, Flow Area= 1.23 sf",
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"text": "10.000 in/hr Exfiltration over Surface area\\nConductivity to Groundwater Elevation = -4.00'",
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"text": "Pond 21P: Basin A Routing (StormBrixx) - Chamber Wizard Field A",
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"text": "Chamber Model = ACO StormBrixx SD 1 (ACO StormBrixx SD)\nInside = 23.7\" W × 36.0\" H => 5.75 sf × 3.95' L = 22.7 cf\nOutside = 23.7\" W × 36.0\" H => 5.93 sf × 3.95' L = 23.4 cf\n\n24 Chambers/Row × 3.95' Long = 94.88' Row Length\n16 Rows × 23.7\" Wide = 31.63' Base Width\n36.0\" Chamber Height = 3.00' Field Height\n\n384 Chambers × 22.7 cf = 8,728.7 cf Chamber Storage\n384 Chambers × 23.4 cf = 8,998.6 cf Displacement\n\nChamber Storage = 8,728.7 cf = 0.200 af\nOverall Storage Efficiency = 97.0%\nOverall System Size = 94.88' × 31.63' × 3.00'\n\n384 Chambers\n333.3 cy Field",
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Page 43
27 item(s)
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1 · HEADER
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6 · TABLE
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25 · CAPTION
26 · FIGURE
27 · FOOTNOTE
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r0c0 (0%): “Inflow Area =”
r0c1 (0%): “1.020 ac,”
r0c2 (0%): “8.82% Impervious,”
r0c3 (0%): “Inflow Depth = 0.38" for 2-Year-Projected event”
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"text": "2026-02 Existing and Proposed NOAA 24-hr D 2-Year-Projected Rainfall=4.04\"\nPrepared by Dynamic Engineering Printed 2/10/2026\nHydroCAD® 10.20-8a s/n 08640 © 2025 HydroCAD Software Solutions LLC Page 43",
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Page 44
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1 · HEADER
2 · HEADER
3 · HEADING
4 · TABLE
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11 · TEXT
12 · CAPTION
13 · FIGURE
14 · HEADING
15 · TABLE
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23 · TEXT
24 · TEXT
25 · TEXT
26 · CAPTION
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r1c0 (0%): “Inflow =”
r1c1 (0%): “0.08 cfs @ 12.19 hrs, Volume= 0.010 af”
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Page 45
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Table integrity:
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r1c0 (0%): “Inflow =”
r1c1 (0%): “0.00 cfs @ 17.02 hrs, Volume= 0.001 af”
Page 45 JSON
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Page 46
50 item(s)
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1 · HEADER
2 · HEADER
3 · HEADING
4 · TABLE
5
6
7
8
9
10
11 · CAPTION
12 · FIGURE
13 · TABLE
14
15
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25
26
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30
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32
33
34
35
36
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42
43
44
45
46
47
48
49 · TEXT
50 · FOOTNOTE
Table integrity:
6 of 6 cells don't match the text layer at their coordinates.
r0c0 (0%): “Inflow Area =”
r0c1 (0%): “0.120 ac, 25.00% Impervious, Inflow Depth = 0.99" for 2-Yea…”
r1c0 (0%): “Inflow =”
r1c1 (0%): “0.08 cfs @ 12.19 hrs, Volume= 0.010 af”
Table integrity:
22 of 35 cells don't match the text layer at their coordinates.
r0c0 (0%): “Time span=0.00-72.00 hrs, dt=0.05 hrs, 1441 points”
r1c0 (14%): “Runoff by SCS TR-20 method, UH=Delmarva, Weighted-CN”
r2c0 (0%): “Reach routing by Stor-Ind+Trans method - Pond routing by St…”
r3c0 (0%): “Subcatchment3S: Ex. Study Area West”
Page 46 JSON
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"text": "2026-02 Existing and Proposed NOAA 24-hr D 2-Year-Projected Rainfall=4.04\"\nPrepared by Dynamic Engineering Printed 2/10/2026\nHydroCAD® 10.20-8a s/n 08640 © 2025 HydroCAD Software Solutions LLC Page 49",
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Page 47
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1 · TABLE
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55 · CAPTION
56 · CAPTION
57 · FIGURE
58 · CAPTION
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Page 48
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61 · HEADING
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93 · CAPTION
94 · CAPTION
95 · FIGURE
96 · FOOTNOTE
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Page 49
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1 · HEADER
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5 · TABLE
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42 · TABLE
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80 · CAPTION
81 · FIGURE
82 · FOOTNOTE
83 · FOOTNOTE
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Page 50
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57 · HEADING
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Page 51
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Page 52
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96 · FOOTNOTE
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"l": 586.68,
"t": 450,
"r": 739.68,
"b": 442.16
},
"text": "0.70 cfs @ 12.76 hrs, Volume= 0.309 af",
"attrs": {
"row": 3,
"col": 1,
"rowspan": 1,
"colspan": 1
}
},
{
"id": "p52.11.9",
"order": 57,
"type": "table_cell",
"bbox": {
"l": 462.980899,
"t": 457.976121,
"r": 486.238396,
"b": 451.623084
},
"text": "Primary =",
"attrs": {
"row": 4,
"col": 0,
"rowspan": 1,
"colspan": 1,
"bbox_refit": true
}
},
{
"id": "p52.11.10",
"order": 58,
"type": "table_cell",
"bbox": {
"l": 586.68,
"t": 442.16,
"r": 739.68,
"b": 434.32
},
"text": "0.00 cfs @ 0.00 hrs, Volume= 0.000 af",
"attrs": {
"row": 4,
"col": 1,
"rowspan": 1,
"colspan": 1
}
},
{
"id": "p52.11.11",
"order": 59,
"type": "table_cell",
"bbox": {
"l": 433.68,
"t": 434.32,
"r": 739.68,
"b": 426.48
},
"text": "Routed to Link 14L: Study Area West (Total)",
"attrs": {
"row": 5,
"col": 0,
"rowspan": 1,
"colspan": 2
}
}
]
},
{
"id": "p52.12",
"order": 60,
"type": "text",
"bbox": {
"l": 433.2,
"t": 419.76,
"r": 656.88,
"b": 402.48
},
"text": "Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.05 hrs\nPeak Elev= 118.37' @ 12.76 hrs Surf.Area= 3,001 sf Storage= 2,530 cf"
},
{
"id": "p52.13",
"order": 61,
"type": "text",
"bbox": {
"l": 432.96,
"t": 397.2,
"r": 661.2,
"b": 380.16
},
"text": "Plug-Flow detention time= 18.8 min calculated for 0.309 af (100% of inflow) Center-of-Mass det. time= 18.8 min (777.0 - 758.2)"
},
{
"id": "p52.14",
"order": 62,
"type": "table",
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"t": 374.16,
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"text": "",
"attrs": {
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"attrs": {
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"attrs": {
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},
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"l": 432.24,
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"r": 512.16,
"b": 319.2
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"text": "#2A",
"attrs": {
"row": 2,
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"attrs": {
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"rowspan": 1,
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}
},
{
"id": "p52.14.11",
"order": 73,
"type": "table_cell",
"bbox": {
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"r": 672,
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},
"text": "8,729 cf",
"attrs": {
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"rowspan": 1,
"colspan": 1
}
},
{
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"order": 74,
"type": "table_cell",
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"l": 672,
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"text": "8,999 cf Overall - 8,999 cf Embedded = 0 cf x 40.0% Voids\\nACO StormBrixx SD 1 x 384 Inside #1\\nInside = 23.7\"W x 36.0\"H => 5.75 sf x 3.95'L = 22.7 cf\\nOutside = 23.7\"W x 36.0\"H => 5.93 sf x 3.95'L = 23.4 cf\\n384 Chambers in 16 Rows",
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{
"id": "p52.15",
"order": 75,
"type": "caption",
"bbox": {
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"t": 318.24,
"r": 628.08,
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"text": "8,729 cf Total Available Storage",
"attrs": {
"block_label": "figure_title"
}
},
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"id": "p52.16",
"order": 76,
"type": "text",
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"b": 294.72
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"text": "Storage Group A created with Chamber Wizard"
},
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"t": 290.88,
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"bbox": {
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"r": 512.34,
"b": 271
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"order": 80,
"type": "table_cell",
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"r": 672.06,
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"r": 512.34,
"b": 251.12
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"text": "#1",
"attrs": {
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"colspan": 1
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{
"id": "p52.17.6",
"order": 83,
"type": "table_cell",
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"t": 271,
"r": 592.2,
"b": 251.12
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"text": "Primary",
"attrs": {
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"col": 1,
"rowspan": 1,
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"id": "p52.17.7",
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"text": "117.50'",
"attrs": {
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"text": "15.0\" Round Culvert\\nL= 22.0' RCP, groove end projecting, Ke= 0.200\\nInlet / Outlet Invert= 117.50' / 117.40' S= 0.0045'' Cc= 0.900\\nn= 0.013, Flow Area= 1.23 sf",
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"b": 231.24
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"text": "#2",
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"col": 0,
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"type": "table_cell",
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"r": 592.2,
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"rowspan": 1,
"colspan": 1
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"attrs": {
"row": 2,
"col": 2,
"rowspan": 1,
"colspan": 1
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"type": "table_cell",
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"text": "6.0'' Vert. Orifice C= 0.600 Limited to weir flow at low heads",
"attrs": {
"row": 2,
"col": 3,
"rowspan": 1,
"colspan": 1
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},
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"order": 90,
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"bbox": {
"l": 432.48,
"t": 231.24,
"r": 512.34,
"b": 211.36
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"text": "#3",
"attrs": {
"row": 3,
"col": 0,
"rowspan": 1,
"colspan": 1
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},
{
"id": "p52.17.14",
"order": 91,
"type": "table_cell",
"bbox": {
"l": 512.34,
"t": 231.24,
"r": 592.2,
"b": 211.36
},
"text": "Discarded",
"attrs": {
"row": 3,
"col": 1,
"rowspan": 1,
"colspan": 1
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},
{
"id": "p52.17.15",
"order": 92,
"type": "table_cell",
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"l": 592.2,
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"r": 672.06,
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"text": "117.50'",
"attrs": {
"row": 3,
"col": 2,
"rowspan": 1,
"colspan": 1
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},
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"type": "table_cell",
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"text": "10.000 in/hr Exfiltration over Surface area\\nConductivity to Groundwater Elevation = -4.00'",
"attrs": {
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"rowspan": 1,
"colspan": 1
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"type": "table_cell",
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"t": 211.36,
"r": 751.92,
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"text": "Discarded OutFlow Max=0.70 cfs @ 12.76 hrs HW=118.37' (Free Discharge)\\n—3=Exfiltration ( Controls 0.70 cfs)",
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"col": 0,
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"type": "table_cell",
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"text": "4.8 58 Total, Increased to minimum $ T_{c} = 10.0 \\, min $",
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}
Page 53
13 item(s)
JSON
caption (1)
figure (3)
footer (1)
footnote (2)
header (2)
heading (1)
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1 · HEADER
2 · HEADER
3 · HEADING
4 · TEXT
5 · TEXT
6 · TEXT
7 · FIGURE
8 · CAPTION
9 · FIGURE
10 · FIGURE
11 · FOOTER
12 · FOOTNOTE
13 · FOOTNOTE
Page 53 JSON
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"text": "2026-02 Existing and Proposed NOAA 24-hr D 10-Year-Current Rainfall=5.38\"\nPrepared by Dynamic Engineering Printed 2/10/2026\nHydroCAD® 10.20-8a s/n 08640 © 2025 HydroCAD Software Solutions LLC Page 63",
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Page 54
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4 · TABLE
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Table integrity:
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Table integrity:
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r0c0 (0%): “Inflow Area =”
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Page 55
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Table integrity:
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Page 58
97 item(s)
JSON
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1 · HEADER
2 · HEADING
3 · TEXT
4 · TEXT
5 · TABLE
6
7
8
9
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11
12
13
14
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16
17
18
19
20
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23
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27
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32
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36 · CAPTION
37 · CAPTION
38 · FIGURE
39 · CAPTION
40 · FIGURE
41 · TABLE
42
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45
46
47
48
49
50 · HEADING
51 · TEXT
52 · TEXT
53 · TABLE
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
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92
93 · CAPTION
94 · CAPTION
95 · FIGURE
96 · CAPTION
97 · FOOTNOTE
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Page 58 JSON
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Page 59
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61 · CAPTION
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Page 59 JSON
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Page 60
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Page 61
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"b": 387.8057
},
"text": "Length (feet)",
"attrs": {
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"rowspan": 1,
"colspan": 1
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},
{
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"l": 645.76,
"t": 397.7143,
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"b": 387.8057
},
"text": "Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)",
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},
{
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"t": 387.8057,
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"b": 377.8971
},
"text": "4.8",
"attrs": {
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"col": 0,
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"colspan": 1
}
},
{
"id": "p62.11.14",
"order": 58,
"type": "table_cell",
"bbox": {
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"t": 387.8057,
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},
"text": "58",
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},
{
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"type": "table_cell",
"bbox": {
"l": 645.76,
"t": 387.8057,
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"b": 377.8971
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"text": "0.0300 0.20",
"attrs": {
"row": 4,
"col": 2,
"rowspan": 1,
"colspan": 1
}
},
{
"id": "p62.11.16",
"order": 60,
"type": "table_cell",
"bbox": {
"l": 432.96,
"t": 377.8971,
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"b": 367.9886
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"text": "Sheet Flow, A-B",
"attrs": {
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"text": "Grass: Short n= 0.150 P2= 4.04\"",
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"colspan": 3
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}
]
},
{
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},
"text": "Subcatchment 19S: Study Area Road Undetained (Perv)",
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"block_label": "figure_title"
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},
{
"id": "p62.13",
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"r": 594.72,
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"text": "",
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"id": "p62.14",
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"text": "0.8 207 Total, Increased to minimum $ T_{c} = 10.0 \\, min $",
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},
{
"id": "p62.16",
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"text": "4.8 58 Total, Increased to minimum $ T_{c} = 10.0 \\, min $",
"attrs": {
"block_label": "vision_footnote"
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}
],
"excluded_furniture": {
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}
Page 63
52 item(s)
JSON
caption (1)
figure (1)
footer (1)
header (2)
heading (2)
table (3)
table_cell (40)
text (2)
1 · HEADER
2 · HEADER
3 · HEADING
4 · TABLE
5
6
7
8
9
10
11
12
13
14
15 · TABLE
16
17
18
19
20
21
22
23
24
25
26
27
28 · CAPTION
29 · TEXT
30 · TABLE
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49 · HEADING
50 · TEXT
51 · FIGURE
52 · FOOTER
Table integrity:
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r0c0 (0%): “Inflow Area = 0.740 ac, 97.30% Impervious, Inflow Depth = 5…”
r1c0 (0%): “Inflow = 2.86 cfs @ 12.19 hrs, Volume= 0.367 af”
r2c0 (0%): “Outflow = 0.70 cfs @ 12.86 hrs, Volume= 0.367 af, Atten= 75…”
r3c0 (0%): “Discarded = 0.70 cfs @ 12.86 hrs, Volume= 0.367 af”
Table integrity:
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r0c0 (0%): “Volume”
r0c1 (0%): “Invert”
r0c2 (0%): “Avail.Storage”
r0c3 (0%): “Storage Description”
Page 63 JSON
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"text": "2026-02 Existing and Proposed NOAA 24-hr D 10-Year-Projected Rainfall=6.34\"\nPrepared by Dynamic Engineering Printed 2/10/2026\nHydroCAD® 10.20-8a s/n 08640 © 2025 HydroCAD Software Solutions LLC Page 83",
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"text": "Peak Elev= 118.68' @ 12.86 hrs Surf.Area= 3,001 sf Storage=…"
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"text": "Inflow Area = 0.740 ac, 97.30% Impervious, Inflow Depth = 5.95\" for 10-Year-Projected event",
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"attrs": {
"row": 2,
"col": 0,
"rowspan": 1,
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"b": 318.96
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"text": "8,729 cf",
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"text": "8,729 cf Total Available Storage",
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"text": "Storage Group A created with Chamber Wizard"
},
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"text": "Device",
"attrs": {
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"rowspan": 1,
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"type": "table_cell",
"bbox": {
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"r": 198,
"b": 271.6
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"text": "Routing",
"attrs": {
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"type": "table_cell",
"bbox": {
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"r": 278.52,
"b": 271.6
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"text": "Invert",
"attrs": {
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"text": "Chamber Model = ACO StormBrixx SD 1 (ACO StormBrix Inside = 23.7\"W x 36.0\"H => 5.75 sf x 3.95'L = 22.7 cf Outside = 23.7\"W x 36.0\"H => 5.93 sf x 3.95'L = 23.4 cf\n24 Chambers/Row x 3.95' Long = 94.88' Row Length\n16 Rows x 23.7\" Wide = 31.63' Base Width\n36.0\" Chamber Height = 3.00' Field Height\n384 Chambers x 22.7 cf = 8,728.7 cf Chamber Storage\n384 Chambers x 23.4 cf = 8,998.6 cf Displacement\nChamber Storage = 8,728.7 cf = 0.200 af Overall Storage Efficiency = 97.0% Overall System Size = 94.88' x 31.63' x 3.00'\n384 Chambers\n333.3 cy Field",
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Page 64
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r0c0 (0%): “Inflow Area =”
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r0c3 (0%): “Inflow Depth = 1.04" for 10-Year-Projected event”
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Page 65
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14 · HEADING
15 · TEXT
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"text": "0.150 ac, 20.00% Impervious, Inflow Depth = 1.66\" for 10-Year-Projected event",
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Page 66
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Page 67
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r3c0 (0%): “Subcatchment3S: Ex. Study Area West”
Page 67 JSON
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Page 68
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1 · TABLE
2
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16
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20
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22 · TABLE
23
24
25
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27 · HEADING
28 · TEXT
29 · TEXT
30 · TABLE
31
32
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34
35
36
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38
39
40
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64 · CAPTION
65 · CAPTION
66 · FIGURE
67 · FIGURE
68 · FOOTNOTE
Table integrity:
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r0c2 (0%): “NOAA 24-hr D 100-Year-Current Rainfall=9.48" Printed 2/10/2…”
Table integrity:
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r0c0 (0%): “Area (ac)”
r0c1 (0%): “CN”
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Page 68 JSON
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"text": "Shallow Concentrated Flow, B-C\\nUnpaved Kv= 16.1 fps",
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Page 69
108 item(s)
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caption (5)
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heading (2)
table (4)
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1 · HEADER
2 · HEADING
3 · TABLE
4
5
6 · TABLE
7
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58 · CAPTION
59 · CAPTION
60 · FIGURE
61 · CAPTION
62 · TABLE
63
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76 · HEADING
77 · TEXT
78 · TEXT
79 · TABLE
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104 · CAPTION
105 · CAPTION
106 · FIGURE
107 · FOOTNOTE
108 · FOOTNOTE
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r0c0 (16%): “Runoff = 0.54 cfs @ 12.19 hrs, Volume= 0.069 af, Depth= 9.2…”
r1c0 (32%): “Runoff by SCS TR-20 method, UH=Delmarva, Weighted-CN, Time …”
Table integrity:
38 of 38 cells don't match the text layer at their coordinates.
r0c0 (0%): “Area (ac)”
r0c1 (0%): “CN”
r0c2 (0%): “Description”
r1c0 (0%): “0.040”
Table integrity:
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r0c0 (0%): “2026-02 Existing and Proposed”
r0c2 (0%): “100-Year-Current”
r0c3 (0%): “Rainfall=9.48''”
r1c0 (0%): “Prepared by Dynamic Engineering”
Table integrity:
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r0c0 (0%): “Area (ac)”
r0c1 (0%): “CN”
r0c2 (0%): “Description”
r1c0 (0%): “0.030”
Page 69 JSON
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Page 70
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76 · CAPTION
77 · CAPTION
78 · FIGURE
79 · FOOTNOTE
80 · FOOTNOTE
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Page 71
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1 · HEADER
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5 · TABLE
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39 · CAPTION
40 · FIGURE
41 · CAPTION
42 · TABLE
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56 · HEADING
57 · TABLE
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88 · CAPTION
89 · CAPTION
90 · FIGURE
91 · FOOTNOTE
92 · FOOTNOTE
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Page 71 JSON
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Page 72
74 item(s)
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caption (4)
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header (1)
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1 · HEADER
2 · HEADING
3 · TEXT
4 · TEXT
5 · TABLE
6
7
8
9
10
11
12
13
14
15
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19
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27 · CAPTION
28 · CAPTION
29 · FIGURE
30 · TABLE
31
32
33
34
35
36
37
38
39
40
41
42
43
44 · HEADING
45 · TABLE
46
47 · TEXT
48 · TABLE
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70 · CAPTION
71 · FIGURE
72 · CAPTION
73 · FOOTNOTE
74 · FOOTNOTE
Table integrity:
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Page 72 JSON
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Page 73
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"text": "Summary for Pond 21P: Basin A Routing (StormBrixx)",
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"text": "0.740 ac, 97.30% Impervious, Inflow Depth = 9.04\" for 100-Y…"
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{
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Page 76
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Page 79
90 item(s)
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Page 80
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Page 81
80 item(s)
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figure (3)
footnote (2)
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heading (2)
table (2)
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1 · HEADER
2 · HEADER
3 · HEADING
4 · TEXT
5 · TEXT
6 · TABLE
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34 · CAPTION
35 · CAPTION
36 · FIGURE
37 · FIGURE
38 · HEADING
39 · TEXT
40 · TEXT
41 · TABLE
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75 · CAPTION
76 · CAPTION
77 · FIGURE
78 · CAPTION
79 · FOOTNOTE
80 · FOOTNOTE
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Page 81 JSON
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Page 82
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63 · CAPTION
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Page 83
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1 · HEADER
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5 · TABLE
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26 · CAPTION
27 · FIGURE
28 · FIGURE
29 · CAPTION
30 · TABLE
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39 · HEADING
40 · TABLE
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63 · CAPTION
64 · CAPTION
65 · FIGURE
66 · FOOTNOTE
67 · FOOTNOTE
68 · FOOTNOTE
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},
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},
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}
Page 84
52 item(s)
JSON
caption (1)
figure (1)
footer (1)
header (2)
heading (2)
table (3)
table_cell (40)
text (2)
1 · HEADER
2 · HEADER
3 · HEADING
4 · TABLE
5
6
7
8
9
10
11
12
13
14
15 · TABLE
16
17
18
19
20
21
22
23
24
25
26
27
28 · CAPTION
29 · TEXT
30 · TABLE
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49 · HEADING
50 · TEXT
51 · FIGURE
52 · FOOTER
Table integrity:
10 of 10 cells don't match the text layer at their coordinates.
r0c0 (0%): “Inflow Area = 0.740 ac, 97.30% Impervious, Inflow Depth = 1…”
r1c0 (0%): “Inflow = 5.20 cfs @ 12.19 hrs, Volume= 0.675 af”
r2c0 (0%): “Outflow = 1.62 cfs @ 12.72 hrs, Volume= 0.675 af, Atten= 69…”
r3c0 (0%): “Discarded = 0.71 cfs @ 12.72 hrs, Volume= 0.572 af”
Table integrity:
12 of 12 cells don't match the text layer at their coordinates.
r0c0 (0%): “Volume”
r0c1 (0%): “Invert”
r0c2 (0%): “Avail.Storage”
r0c3 (0%): “Storage Description”
Page 84 JSON
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"attrs": {
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},
{
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"text": "Outflow = 1.62 cfs @ 12.72 hrs, Volume= 0.675 af, Atten= 69%, Lag= 32.1 min",
"attrs": {
"row": 2,
"col": 0,
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"attrs": {
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"col": 0,
"rowspan": 1,
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},
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"type": "table_cell",
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"text": "Routed to Link 14L : Study Area West (Total)",
"attrs": {
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"col": 0,
"rowspan": 1,
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},
{
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"type": "table_cell",
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"t": 419.376,
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"b": 409.872
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"attrs": {
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Page 85
20 item(s)
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caption (5)
figure (2)
footnote (1)
header (2)
table (1)
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1 · HEADER
2 · HEADER
3 · CAPTION
4 · FIGURE
5 · CAPTION
6 · TABLE
7
8
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10
11
12
13
14
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16 · CAPTION
17 · CAPTION
18 · FIGURE
19 · CAPTION
20 · FOOTNOTE
Page 85 JSON
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Page 93
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r2c0 (0%): “Reach routing by Stor-Ind+Trans method - Pond routing by St…”
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Page 94
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Page 96
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Page 97
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Page 98
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Page 99
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1 · TABLE
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14 · TEXT
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41 · TABLE
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54 · TABLE
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110 · FOOTNOTE
Table integrity:
9 of 9 cells don't match the text layer at their coordinates.
r0c0 (0%): “2026-02 Existing and Proposed”
r0c1 (0%): “NJ DEP 2-hr”
r0c2 (0%): “WQ Rainfall=1.24"”
r1c0 (0%): “Prepared by Dynamic Engineering”
Table integrity:
20 of 20 cells don't match the text layer at their coordinates.
r0c0 (0%): “Area (ac)”
r0c1 (0%): “CN”
r0c2 (0%): “Description”
r1c0 (0%): “0.090”
Table integrity:
8 of 8 cells don't match the text layer at their coordinates.
r0c0 (0%): “2026-02 Existing and Proposed”
r0c1 (0%): “NJ DEP 2-hr”
r0c2 (0%): “WQ Rainfall=1.24"”
r1c0 (0%): “Prepared by Dynamic Engineering”
Table integrity:
17 of 19 cells don't match the text layer at their coordinates.
r0c0 (0%): “Inflow Area =”
r0c1 (0%): “0.740 ac, 97.30% Impervious, Inflow Depth = 1.00" for WQ ev…”
r1c0 (0%): “Inflow =”
r1c1 (0%): “1.33 cfs @”
Table integrity:
12 of 12 cells don't match the text layer at their coordinates.
r0c0 (0%): “Volume”
r0c1 (0%): “Invert”
r0c2 (0%): “Avail.Storage”
r0c3 (0%): “Storage Description”
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r1c0 (0%): “Inflow =”
r1c1 (0%): “0.06 cfs @”
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Page 113
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"level": 3
},
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"id": "p114.8",
"order": 41,
"type": "table",
"bbox": {
"l": 76.32,
"t": 276,
"r": 274.56,
"b": 238.8
},
"text": "",
"attrs": {
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"integrity": {
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"row": 0,
"col": 0,
"coverage": 0,
"text": "Where Y = .5 D_{{o}}, Y(ft)"
},
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"row": 0,
"col": 1,
"coverage": 0,
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"text": "Median Stone Diameter ^{{*}}, D_{{50}} (ft)"
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"row": 1,
"col": 1,
"coverage": 0,
"text": "0.02"
},
{
"row": 2,
"col": 0,
"coverage": 0,
"text": "Overall Length of Scour Hole, L2 (ft)"
},
{
"row": 2,
"col": 1,
"coverage": 0,
"text": "7.50"
},
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"row": 3,
"col": 0,
"coverage": 0,
"text": "Overall Width of Scour Hole, W2 (ft)"
},
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"row": 3,
"col": 1,
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"children": [
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"id": "p114.8.1",
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"t": 276,
"r": 175.44,
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"text": "Where Y = .5 D_{{o}}, Y(ft)",
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"row": 0,
"col": 0,
"rowspan": 1,
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"column_header": true,
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"col": 0,
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"t": 257.4,
"r": 175.44,
"b": 248.1
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"text": "Overall Length of Scour Hole, L2 (ft)",
"attrs": {
"row": 2,
"col": 0,
"rowspan": 1,
"colspan": 1
}
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{
"id": "p114.8.6",
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"text": "7.50",
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"b": 238.8
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"row": 3,
"col": 0,
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"colspan": 1
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"text": "6.25",
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"order": 50,
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"t": 230.4,
"r": 149.76,
"b": 221.28
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"text": "When using[p114.9.1]:",
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"text": "Y = (D₀)",
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"inline": true,
"text_offset": 10,
"text_span": 10,
"bbox_estimated": true,
"alt": "Y equals D sub 0",
"mathml": "<math aria-label=\"Y equals D sub 0\" xmlns=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><mrow><mi>Y</mi><mo>=</mo><mo stretchy=\"false\">(</mo><msub><mi>D</mi><mrow><mn>0</mn></mrow></msub><mo stretchy=\"false\">)</mo></mrow></math>"
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"text": "Use D50 equal to 6 inches"
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"text": "Use D50 equal to 6 inches"
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"type": "text",
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"t": 158.64,
"r": 201.36,
"b": 108.72
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"text": "Equations used:\nTw=0.2*Do (If Tw cannot be computed)\nWhere Y=1/2 Do\nD50=(0.0125/Tw)*(q^1.33)\nWhere Y=Do\nD50=(0.0082/Tw)*(q^1.33)"
},
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"id": "p114.14",
"order": 64,
"type": "figure",
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"t": 387.6,
"r": 699.84,
"b": 169.68
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"text": "",
"attrs": {
"block_label": "image",
"embedded_text": "such devices due to the possible problems with mosquito breeding.\nSection of the Standards for Soil Erosion Control in New Jersey."
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"order": 65,
"type": "heading",
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"r": 99.84,
"b": 86.4
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"text": "Notes: ___",
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"level": 3
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{
"id": "p114.16",
"order": 66,
"type": "list",
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"t": 84,
"r": 565.92,
"b": 36.72
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"text": "",
"attrs": {
"item_count": 5
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"children": [
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"id": "p114.16.1",
"order": 67,
"type": "list_item",
"bbox": {
"l": 76.8,
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"r": 563.04,
"b": 75.36
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"text": "The use of scour holes shall comply with county or local ordinances which would restrict the use of such devices due to the possible problems with mosquito breeding.",
"marker": "1."
},
{
"id": "p114.16.2",
"order": 68,
"type": "list_item",
"bbox": {
"l": 76.56,
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"text": "No bends or curves at the intersection of the conduit and apron or scour hole will be permitted.",
"marker": "2."
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"l": 76.32,
"t": 64.08,
"r": 309.6,
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"text": "There shall be no overfall from the end of the apron to the receiving material.",
"marker": "3."
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"id": "p114.16.4",
"order": 70,
"type": "list_item",
"bbox": {
"l": 76.8,
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"text": "The thickness of the riprap lining, filter, and quality shall meet the requirements in the Riprap Standard Section of the Standards for Soil Erosion Control in New Jersey.",
"marker": "4."
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"id": "p114.16.5",
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"t": 44.88,
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"text": "Use a of[p114.16.5.1] 6 inches minimum.",
"marker": "5.",
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"order": 72,
"type": "text",
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"text": "D₅₀",
"attrs": {
"inline": true,
"text_offset": 8,
"text_span": 13,
"bbox_estimated": true
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"text": "Ex. 10 Yr Imp. Volume = 0.046 acre feet\nProp. 10 Yr Imp. Volume = 0.366 acre feet\nNet Volume to be Infiltrated = 0.320 acre feet\nVolume below Lowest Orifice = 0.392 acre feet\nResult: Net 10 Year Increase is Infiltrated"
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Table integrity:
1 of 16 cells don't match the text layer at their coordinates.
r3c2 (0%): “Kh = 5xRecharge Rate (R) in the costal plan; Kh=R outside t…”
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Page 125
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Page 126
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Page 127
91 item(s)
JSON
caption (2)
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1 · HEADER
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3 · TEXT
4 · TEXT
5 · TABLE
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39 · CAPTION
40 · FIGURE
41 · CAPTION
42 · TABLE
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49 · HEADING
50 · TABLE
51
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60 · TEXT
61 · TEXT
62 · TABLE
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75 · TEXT
76 · TEXT
77 · TABLE
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90 · TEXT
91 · FOOTNOTE
Table integrity:
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r1c0 (0%): “Inflow =”
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Page 127 JSON
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"text": "Inflow Area ="
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{
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{
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"text": "0.740 ac, 97.30% Impervious, Inflow Depth = 6.28\" for 25-Year event",
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{
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"text": "3.02 cfs @ 12.19 hrs, Volume= 0.388 af",
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},
{
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"type": "table_cell",
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"text": "Outflow =",
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{
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"type": "table_cell",
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{
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{
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"type": "table_cell",
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"text": "Plug-Flow detention time=244.3 min calculated for 0.300 af (77% of inflow) Center-of-Mass det. time=155.0 min (910.0 - 755.0)"
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}
},
{
"id": "p127.14.7",
"order": 69,
"type": "table_cell",
"bbox": {
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"t": 363.44,
"r": 671.82,
"b": 344.8
},
"text": "0 cf",
"attrs": {
"row": 1,
"col": 2,
"rowspan": 1,
"colspan": 1
}
},
{
"id": "p127.14.8",
"order": 70,
"type": "table_cell",
"bbox": {
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"text": "31.63'W × 94.88'L × 3.00'H Field A",
"attrs": {
"row": 1,
"col": 3,
"rowspan": 1,
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}
},
{
"id": "p127.14.9",
"order": 71,
"type": "table_cell",
"bbox": {
"l": 432.24,
"t": 344.8,
"r": 512.1,
"b": 326.16
},
"text": "#2A",
"attrs": {
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},
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"type": "table_cell",
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},
"text": "117.50'",
"attrs": {
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"col": 1,
"rowspan": 1,
"colspan": 1
}
},
{
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"bbox": {
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"r": 671.82,
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},
"text": "8,729 cf",
"attrs": {
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"col": 2,
"rowspan": 1,
"colspan": 1
}
},
{
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"text": "8,999 cf Overall - 8,999 cf Embedded = 0 cf × 40.0% Voids\\nACO StormBrixx SD 1 × 384 Inside #1\\nInside= 23.7\"W × 36.0\"H => 5.75 sf × 3.95'L = 22.7 cf\\nOutside= 23.7\"W × 36.0\"H => 5.93 sf × 3.95'L = 23.4 cf\\n384 Chambers in 16 Rows",
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"text": "8,729 cf Total Available Storage"
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"type": "text",
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"text": "Storage Group A created with Chamber Wizard"
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"text": "Device",
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"colspan": 1,
"column_header": true,
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"type": "table_cell",
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"text": "Routing",
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"text": "Invert",
"attrs": {
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"rowspan": 1,
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{
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"type": "table_cell",
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"t": 296.16,
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"text": "Outlet Devices",
"attrs": {
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"col": 3,
"rowspan": 1,
"colspan": 1,
"column_header": true,
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"r": 512.76,
"b": 263.36
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"text": "#1",
"attrs": {
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"col": 0,
"rowspan": 1,
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},
{
"id": "p127.17.6",
"order": 83,
"type": "table_cell",
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"r": 592.32,
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"text": "Primary",
"attrs": {
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}
},
{
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"bbox": {
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"r": 671.88,
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"text": "117.50'",
"attrs": {
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"rowspan": 1,
"colspan": 1
}
},
{
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"order": 85,
"type": "table_cell",
"bbox": {
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"text": "15.0\" Round Culvert\\nL= 22.0' RCP, groove end projecting, Ke= 0.200\\nInlet / Outlet Invert= 117.50' / 117.40' S= 0.0045'' Cc= 0.900\\nn= 0.013, Flow Area= 1.23 sf",
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{
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"r": 512.76,
"b": 246.96
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"text": "#2",
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"r": 592.32,
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}
},
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"type": "table_cell",
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"r": 671.88,
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"text": "118.81'",
"attrs": {
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"col": 2,
"rowspan": 1,
"colspan": 1
}
},
{
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"order": 89,
"type": "table_cell",
"bbox": {
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"r": 751.44,
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"text": "6.0\" Vert. Orifice C= 0.600 Limited to weir flow at low heads",
"attrs": {
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}
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"text": "Primary OutFlow Max=1.06 cfs @ 12.67 hrs HW=120.31' (Free Discharge)\n1=Culvert (Passes 1.06 cfs of 9.70 cfs potential flow)\n2=Orifice (Orifice Controls 1.06 cfs @ 5.38 fps)"
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},
"text": "2.9 351 Total, Increased to minimum $ T_{c} = 10.0 \\, min $",
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Page 128
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10 · CAPTION
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Page 128 JSON
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"text": "2026-02 Offsite Stability NOAA 24-hr D 25-Year Rainfall=6.68\", P2=4.04\"\nPrepared by Dynamic Engineering Printed 2/10/2026\nHydroCAD® 10.20-8a s/n 08640 © 2025 HydroCAD Software Solutions LLC Page 13",
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"text": "2026-02 Offsite Stability NOAA 24-hr D 25-Year Rainfall=6.68\", P2=4.04\"\nPrepared by Dynamic Engineering Printed 2/10/2026\nHydroCAD® 10.20-8a s/n 08640 © 2025 HydroCAD Software Solutions LLC Page 14",
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"text": "Pond 17P: Basin A Routing (StormBrixx) - Chamber Wizard Field A",
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"text": "Chamber Model = ACO StormBrixx SD 1 (ACO StormBrixx® SD)\nInside = 23.7\" W x 36.0\" H => 5.75 sf x 3.95' L = 22.7 cf\nOutside = 23.7\" W x 36.0\" H => 5.93 sf x 3.95' L = 23.4 cf"
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"text": "24 Chambers/Row x 3.95' Long = 94.88' Row Length\n16 Rows x 23.7\" Wide = 31.63' Base Width\n36.0\" Chamber Height = 3.00' Field Height\n384 Chambers x 22.7 cf = 8.728.7 cf Chamber Storage\n384 Chambers x 23.4 cf = 8.998.6 cf Displacement"
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"text": "Chamber Storage = 8,728.7 cf = 0.200 af\nOverall Storage Efficiency = 97.0%\nOverall System Size = 94.88' x 31.63' x 3.00'\n384 Chambers\n333.3 cy Field"
},
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"text": "Pond 17P: Basin A Routing (StormBrixx)",
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"r": 594.48,
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Page 129
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14 · FIGURE
15 · FOOTNOTE
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"text": "2026-02 Offsite Stability NOAA 24-hr D 25-Year Rainfall=6.68\", P2=4.04\"\nPrepared by Dynamic Engineering Printed 2/10/2026\nHydroCAD® 10.20-8a s/n 08640 © 2025 HydroCAD Software Solutions LLC Page 16",
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"text": "Summary for Link 18L: Study Area Study Area WQ MTD A-110 (Total)",
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"text": "Inflow Area = 0.630 ac, 96.83% Impervious, Inflow Depth = 6.26\" for 25-Year event\nInflow = 2.56 cfs @ 12.19 hrs, Volume = 0.329 af\nPrimary = 2.56 cfs @ 12.19 hrs, Volume = 0.329 af, Atten = 0%, Lag = 0.0 min\nRouted to Link 191: Study Area Basin A (Total)"
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"text": "Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.05 hrs"
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"text": "Fixed water surface Elevation= 117.75'"
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"text": "Summary for Link 19L: Study Area Basin A (Total)",
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"text": "Inflow Area = 0.740 ac, 97.30% Impervious, Inflow Depth = 6.28\" for 25-Year event\nInflow = 3.02 cfs @ 12.19 hrs, Volume= 0.388 af\nPrimary = 3.02 cfs @ 12.19 hrs, Volume= 0.388 af, Atten= 0%, Lag= 0.0 min\nRouted to Pond 17P : Basin A Routing (StormBrixx)\nPrimary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.05 hrs"
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"text": "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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Page 130
1 item(s)
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1 · TEXT
Page 130 JSON
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Page 131
1 item(s)
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1 · HEADING
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Page 132
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footer (1)
form_field (16)
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Page 132 JSON
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