Supporting Documentation · Jul 30, 2024

Revised Stormwater Management Report

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POA 2 proposed 2024-05-12 HydroCad - Proposed POA 2 NJ DEP 2-hr WQ Rainfall=1.25" Prepared by Anderson Consulting Services Printed 6/29/2024 Page 243 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Summary for Subcatchment 20S: Basin 3 - Perv Runoff = 0.06 cfs @ 1.24 hrs, Volume= Routed to Pond 21P : Basin 3 118 cf, Depth= 0.07" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-80.00 hrs, dt= 0.04 hrs NJ DEP 2-hr WQ Rainfall=1.25" Area (sf) 19,242 19,242 Tc (min) 8.3 Length (feet) 75 CN 74 Description >75% Grass cover, Good, HSG C 100.00% Pervious Area Slope Velocity Capacity Description (ft/ft) (ft/sec) (cfs) 0.0400 0.15 Sheet Flow, Sheet Flow (A-B) Grass: Dense n= 0.240 P2= 3.47" Subcatchment 20S: Basin 3 - Perv Hydrograph 0.065 0.06 0.055 0.05 Flow (cfs) 0.045 0.04 0.035 0.03 0.025 0.02 0.015 0.01 Runoff 0.06 cfs NJ DEP 2-hr WQ Rainfall=1.25" Runoff Area=19,242 sf Runoff Volume=118 cf Runoff Depth=0.07" Flow Length=75' Slope=0.0400 '/' Tc=8.3 min CN=74 0.005 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 74 76 78 80 Time (hours)

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POA 2 proposed 2024-05-12 HydroCad - Proposed POA 2 NJ DEP 2-hr WQ Rainfall=1.25" Prepared by Anderson Consulting Services Printed 6/29/2024 Page 244 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Hydrograph for Subcatchment 20S: Basin 3 - Perv Time Precip. Excess (hours) (inches) (inches) 0.00 0.00 0.00 0.80 0.23 0.00 1.60 1.18 0.06 2.40 1.25 0.07 3.20 1.25 0.07 4.00 1.25 0.07 4.80 1.25 0.07 5.60 1.25 0.07 6.40 1.25 0.07 7.20 1.25 0.07 8.00 1.25 0.07 8.80 1.25 0.07 9.60 1.25 0.07 10.40 1.25 0.07 11.20 1.25 0.07 12.00 1.25 0.07 12.80 1.25 0.07 13.60 1.25 0.07 14.40 1.25 0.07 15.20 1.25 0.07 16.00 1.25 0.07 16.80 1.25 0.07 17.60 1.25 0.07 18.40 1.25 0.07 19.20 1.25 0.07 20.00 1.25 0.07 20.80 1.25 0.07 21.60 1.25 0.07 22.40 1.25 0.07 23.20 1.25 0.07 24.00 1.25 0.07 24.80 1.25 0.07 25.60 1.25 0.07 26.40 1.25 0.07 27.20 1.25 0.07 28.00 1.25 0.07 28.80 1.25 0.07 29.60 1.25 0.07 30.40 1.25 0.07 31.20 1.25 0.07 32.00 1.25 0.07 32.80 1.25 0.07 33.60 1.25 0.07 34.40 1.25 0.07 35.20 1.25 0.07 36.00 1.25 0.07 36.80 1.25 0.07 37.60 1.25 0.07 38.40 1.25 0.07 39.20 1.25 0.07 40.00 1.25 0.07 Runoff (cfs) 0.00 0.00 0.03 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Time Precip. Excess (hours) (inches)

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00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Time Precip. Excess (hours) (inches) (inches) 40.80 1.25 0.07 41.60 1.25 0.07 42.40 1.25 0.07 43.20 1.25 0.07 44.00 1.25 0.07 44.80 1.25 0.07 45.60 1.25 0.07 46.40 1.25 0.07 47.20 1.25 0.07 48.00 1.25 0.07 48.80 1.25 0.07 49.60 1.25 0.07 50.40 1.25 0.07 51.20 1.25 0.07 52.00 1.25 0.07 52.80 1.25 0.07 53.60 1.25 0.07 54.40 1.25 0.07 55.20 1.25 0.07 56.00 1.25 0.07 56.80 1.25 0.07 57.60 1.25 0.07 58.40 1.25 0.07 59.20 1.25 0.07 60.00 1.25 0.07 60.80 1.25 0.07 61.60 1.25 0.07 62.40 1.25 0.07 63.20 1.25 0.07 64.00 1.25 0.07 64.80 1.25 0.07 65.60 1.25 0.07 66.40 1.25 0.07 67.20 1.25 0.07 68.00 1.25 0.07 68.80 1.25 0.07 69.60 1.25 0.07 70.40 1.25 0.07 71.20 1.25 0.07 72.00 1.25 0.07 72.80 1.25 0.07 73.60 1.25 0.07 74.40 1.25 0.07 75.20 1.25 0.07 76.00 1.25 0.07 76.80 1.25 0.07 77.60 1.25 0.07 78.40 1.25 0.07 79.20 1.25 0.07 80.00 1.25 0.07 Runoff (cfs) 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

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POA 2 proposed 2024-05-12 HydroCad - Proposed POA 2 NJ DEP 2-hr WQ Rainfall=1.25" Prepared by Anderson Consulting Services Printed 6/29/2024 Page 245 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Summary for Subcatchment 21S: Basin 4 - Imp Runoff = 3.34 cfs @ 1.09 hrs, Volume= Routed to Pond 22P : Basin 4 4,316 cf, Depth= 1.03" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-80.00 hrs, dt= 0.04 hrs NJ DEP 2-hr WQ Rainfall=1.25" Area (sf) 6,970 43,091 50,061 50,061 Tc (min) 0.9 Length (feet) 70 4.6 5.5 685 755 CN 98 98 98 Description Roofs, HSG D Paved parking, HSG C Weighted Average 100.00% Impervious Area Slope Velocity Capacity Description (ft/ft) (ft/sec) (cfs) 0.0200 1.33 Sheet Flow, Sheet Flow (A-B) Smooth surfaces n= 0.011 P2= 3.47" 2.50 Direct Entry, Pipe Flow (B-C) Total Subcatchment 21S: Basin 4 - Imp Hydrograph Runoff 3.34 cfs Flow (cfs) 3 2 1 0 NJ DEP 2-hr WQ Rainfall=1.25" Runoff Area=50,061 sf Runoff Volume=4,316 cf Runoff Depth=1.03" Flow Length=755' Slope=0.0200 '/' Tc=5.5 min CN=98 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 74 76 78 80 Time (hours)

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POA 2 proposed 2024-05-12 HydroCad - Proposed POA 2 NJ DEP 2-hr WQ Rainfall=1.25" Prepared by Anderson Consulting Services Printed 6/29/2024 Page 246 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Hydrograph for Subcatchment 21S: Basin 4 - Imp Time Precip. Excess (hours) (inches) (inches) 0.00 0.00 0.00 0.80 0.23 0.09 1.60 1.18 0.97 2.40 1.25 1.03 3.20 1.25 1.03 4.00 1.25 1.03 4.80 1.25 1.03 5.60 1.25 1.03 6.40 1.25 1.03 7.20 1.25 1.03 8.00 1.25 1.03 8.80 1.25 1.03 9.60 1.25 1.03 10.40 1.25 1.03 11.20 1.25 1.03 12.00 1.25 1.03 12.80 1.25 1.03 13.60 1.25 1.03 14.40 1.25 1.03 15.20 1.25 1.03 16.00 1.25 1.03 16.80 1.25 1.03 17.60 1.25 1.03 18.40 1.25 1.03 19.20 1.25 1.03 20.00 1.25 1.03 20.80 1.25 1.03 21.60 1.25 1.03 22.40 1.25 1.03 23.20 1.25 1.03 24.00 1.25 1.03 24.80 1.25 1.03 25.60 1.25 1.03 26.40 1.25 1.03 27.20 1.25 1.03 28.00 1.25 1.03 28.80 1.25 1.03 29.60 1.25 1.03 30.40 1.25 1.03 31.20 1.25 1.03 32.00 1.25 1.03 32.80 1.25 1.03 33.60 1.25 1.03 34.40 1.25 1.03 35.20 1.25 1.03 36.00 1.25 1.03 36.80 1.25 1.03 37.60 1.25 1.03 38.40 1.25 1.03 39.20 1.25 1.03 40.00 1.25 1.03 Runoff (cfs) 0.00 0.36 0.37 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Time Precip. Excess (hours) (inches)

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00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Time Precip. Excess (hours) (inches) (inches) 40.80 1.25 1.03 41.60 1.25 1.03 42.40 1.25 1.03 43.20 1.25 1.03 44.00 1.25 1.03 44.80 1.25 1.03 45.60 1.25 1.03 46.40 1.25 1.03 47.20 1.25 1.03 48.00 1.25 1.03 48.80 1.25 1.03 49.60 1.25 1.03 50.40 1.25 1.03 51.20 1.25 1.03 52.00 1.25 1.03 52.80 1.25 1.03 53.60 1.25 1.03 54.40 1.25 1.03 55.20 1.25 1.03 56.00 1.25 1.03 56.80 1.25 1.03 57.60 1.25 1.03 58.40 1.25 1.03 59.20 1.25 1.03 60.00 1.25 1.03 60.80 1.25 1.03 61.60 1.25 1.03 62.40 1.25 1.03 63.20 1.25 1.03 64.00 1.25 1.03 64.80 1.25 1.03 65.60 1.25 1.03 66.40 1.25 1.03 67.20 1.25 1.03 68.00 1.25 1.03 68.80 1.25 1.03 69.60 1.25 1.03 70.40 1.25 1.03 71.20 1.25 1.03 72.00 1.25 1.03 72.80 1.25 1.03 73.60 1.25 1.03 74.40 1.25 1.03 75.20 1.25 1.03 76.00 1.25 1.03 76.80 1.25 1.03 77.60 1.25 1.03 78.40 1.25 1.03 79.20 1.25 1.03 80.00 1.25 1.03 Runoff (cfs) 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

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POA 2 proposed 2024-05-12 HydroCad - Proposed POA 2 NJ DEP 2-hr WQ Rainfall=1.25" Prepared by Anderson Consulting Services Printed 6/29/2024 Page 247 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Summary for Subcatchment 24S: Basin 4 - Perv Runoff = 0.03 cfs @ 1.19 hrs, Volume= Routed to Pond 22P : Basin 4 46 cf, Depth= 0.07" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-80.00 hrs, dt= 0.04 hrs NJ DEP 2-hr WQ Rainfall=1.25" Area (sf) 7,526 7,526 Tc (min) 0.9 Length (feet) 70 4.6 5.5 685 755 CN 74 Description >75% Grass cover, Good, HSG C 100.00% Pervious Area Slope Velocity Capacity Description (ft/ft) (ft/sec) (cfs) 0.0200 1.33 Sheet Flow, Sheet Flow (A-B) Smooth surfaces n= 0.011 P2= 3.47" 2.50 Direct Entry, Pipe Flow (B-C) Total Subcatchment 24S: Basin 4 - Perv Hydrograph Runoff 0.028 0.03 cfs 0.026 0.024 0.022 0.02 Flow (cfs) 0.018 0.016 0.014 0.012 0.01 0.008 0.006 NJ DEP 2-hr WQ Rainfall=1.25" Runoff Area=7,526 sf Runoff Volume=46 cf Runoff Depth=0.07" Flow Length=755' Slope=0.0200 '/' Tc=5.5 min CN=74 0.004 0.002 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 74 76 78 80 Time (hours)

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POA 2 proposed 2024-05-12 HydroCad - Proposed POA 2 NJ DEP 2-hr WQ Rainfall=1.25" Prepared by Anderson Consulting Services Printed 6/29/2024 Page 248 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Hydrograph for Subcatchment 24S: Basin 4 - Perv Time Precip. Excess (hours) (inches) (inches) 0.00 0.00 0.00 0.80 0.23 0.00 1.60 1.18 0.06 2.40 1.25 0.07 3.20 1.25 0.07 4.00 1.25 0.07 4.80 1.25 0.07 5.60 1.25 0.07 6.40 1.25 0.07 7.20 1.25 0.07 8.00 1.25 0.07 8.80 1.25 0.07 9.60 1.25 0.07 10.40 1.25 0.07 11.20 1.25 0.07 12.00 1.25 0.07 12.80 1.25 0.07 13.60 1.25 0.07 14.40 1.25 0.07 15.20 1.25 0.07 16.00 1.25 0.07 16.80 1.25 0.07 17.60 1.25 0.07 18.40 1.25 0.07 19.20 1.25 0.07 20.00 1.25 0.07 20.80 1.25 0.07 21.60 1.25 0.07 22.40 1.25 0.07 23.20 1.25 0.07 24.00 1.25 0.07 24.80 1.25 0.07 25.60 1.25 0.07 26.40 1.25 0.07 27.20 1.25 0.07 28.00 1.25 0.07 28.80 1.25 0.07 29.60 1.25 0.07 30.40 1.25 0.07 31.20 1.25 0.07 32.00 1.25 0.07 32.80 1.25 0.07 33.60 1.25 0.07 34.40 1.25 0.07 35.20 1.25 0.07 36.00 1.25 0.07 36.80 1.25 0.07 37.60 1.25 0.07 38.40 1.25 0.07 39.20 1.25 0.07 40.00 1.25 0.07 Runoff (cfs) 0.00 0.00 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Time Precip. Excess (hours) (inches)

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POA 2 proposed 2024-05-12 HydroCad - Proposed POA 2 NJ DEP 2-hr WQ Rainfall=1.25" Prepared by Anderson Consulting Services Printed 6/29/2024 Page 249 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Summary for Subcatchment 25S: Basin 2 - Perv Runoff = 0.50 cfs @ 1.23 hrs, Volume= Routed to Pond 27P : Basin 2 878 cf, Depth= 0.13" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-80.00 hrs, dt= 0.04 hrs NJ DEP 2-hr WQ Rainfall=1.25" Area (sf) 47,097 31,398 78,495 78,495 Tc (min) 9.0 CN 80 74 78 Description >75% Grass cover, Good, HSG D >75% Grass cover, Good, HSG C Weighted Average 100.00% Pervious Area Length (feet) 93 Slope Velocity Capacity Description (ft/ft) (ft/sec) (cfs) 0.0500 0.17 Sheet Flow, Sheet Flow (A-B) Grass: Dense n= 0.240 P2= 3.47" Using McCuen-Spiess flow length 370 0.0650 4.10 Shallow Concentrated Flow, SCF (B-C) Unpaved Kv= 16.1 fps 463 Total 1.5 10.5 Subcatchment 25S: Basin 2 - Perv Hydrograph Runoff 0.55 0.50 cfs 0.5 0.45 0.4 Flow (cfs) 0.35 0.3 0.25 0.2 0.15 0.1 NJ DEP 2-hr WQ Rainfall=1.25" Runoff Area=78,495 sf Runoff Volume=878 cf Runoff Depth=0.13" Flow Length=463' Tc=10.5 min CN=78 0.05 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 74 76 78 80 Time (hours)

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