complete drainage report rev 9

NJ DEP 2-hr WQ Rainfall=1.25" Combined FT (8-22-24) Prepared by Contech Engineered Solutions HydroCAD® 10.20-3f s/n 00447 © 2023 HydroCAD Software Solutions LLC Printed 8/26/2024 Page 18 Summary for Subcatchment 13i: Imp Runoff = 0.39 cfs @ 1.08 hrs, Volume= Routed to Pond 13FT : 10x6 FT 479 cf, Depth= 1.03" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs NJ DEP 2-hr WQ Rainfall=1.25" Area (sf) 5,554 5,554 Tc (min) 0.7 Length (feet) 100 0.5 170 1.2 270 CN 98 Description Paved parking, HSG D 100.00% Impervious Area Slope Velocity Capacity Description (ft/ft) (ft/sec) (cfs) 0.0670 2.32 Sheet Flow, Smooth surfaces n= 0.011 P2= 3.47" 0.0870 5.99 Shallow Concentrated Flow, Paved Kv= 20.3 fps Total Subcatchment 13i: Imp Flow (cfs) Hydrograph 0.44 0.42 0.39 cfs 0.4 0.38 0.36 0.34 0.32 0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 0 2 4 6 Runoff NJ DEP 2-hr WQ Rainfall=1.25" Runoff Area=5,554 sf Runoff Volume=479 cf Runoff Depth=1.03" Flow Length=270' Tc=1.2 min CN=98 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)

NJ DEP 2-hr WQ Rainfall=1.25" Combined FT (8-22-24) Prepared by Contech Engineered Solutions HydroCAD® 10.20-3f s/n 00447 © 2023 HydroCAD Software Solutions LLC Printed 8/26/2024 Page 19 Summary for Subcatchment 13p: Perv Runoff = 0.06 cfs @ 1.09 hrs, Volume= Routed to Pond 13FT : 10x6 FT 47 cf, Depth= 0.17" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs NJ DEP 2-hr WQ Rainfall=1.25" Area (sf) 3,290 3,290 Tc (min) 0.7 Length (feet) 100 0.5 170 1.2 270 CN 80 Description >75% Grass cover, Good, HSG D 100.00% Pervious Area Slope Velocity Capacity Description (ft/ft) (ft/sec) (cfs) 0.0670 2.32 Sheet Flow, Smooth surfaces n= 0.011 P2= 3.47" 0.0870 5.99 Shallow Concentrated Flow, Paved Kv= 20.3 fps Total Subcatchment 13p: Perv Hydrograph Runoff 0.06 0.06 cfs 0.055 0.05 0.045 Flow (cfs) 0.04 0.035 0.03 0.025 0.02 0.015 0.01 NJ DEP 2-hr WQ Rainfall=1.25" Runoff Area=3,290 sf Runoff Volume=47 cf Runoff Depth=0.17" Flow Length=270' Tc=1.2 min CN=80 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 Time (hours)

NJ DEP 2-hr WQ Rainfall=1.25" Combined FT (8-22-24) Prepared by Contech Engineered Solutions HydroCAD® 10.20-3f s/n 00447 © 2023 HydroCAD Software Solutions LLC Printed 8/26/2024 Page 20 Summary for Subcatchment 14i: Imp Runoff = 0.21 cfs @ 1.08 hrs, Volume= Routed to Pond 14FT : 7.83x4.5 FT 254 cf, Depth= 1.03" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs NJ DEP 2-hr WQ Rainfall=1.25" Area (sf) 2,943 2,943 Tc (min) 0.7 Length (feet) 100 0.4 154 1.1 254 CN 98 Description Paved parking, HSG D 100.00% Impervious Area Slope Velocity Capacity Description (ft/ft) (ft/sec) (cfs) 0.0710 2.38 Sheet Flow, Smooth surfaces n= 0.011 P2= 3.47" 0.0930 6.19 Shallow Concentrated Flow, Paved Kv= 20.3 fps Total Subcatchment 14i: Imp Flow (cfs) Hydrograph 0.23 0.22 0.21 cfs 0.21 0.2 0.19 0.18 0.17 0.16 0.15 0.14 0.13 0.12 0.11 0.1 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0 0 2 4 6 Runoff NJ DEP 2-hr WQ Rainfall=1.25" Runoff Area=2,943 sf Runoff Volume=254 cf Runoff Depth=1.03" Flow Length=254' Tc=1.1 min CN=98 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)

NJ DEP 2-hr WQ Rainfall=1.25" Combined FT (8-22-24) Prepared by Contech Engineered Solutions HydroCAD® 10.20-3f s/n 00447 © 2023 HydroCAD Software Solutions LLC Printed 8/26/2024 Page 21 Summary for Subcatchment 14p: Perv Runoff = 0.00 cfs @ 0.00 hrs, Volume= Routed to Pond 14FT : 7.83x4.5 FT 0 cf, Depth= 0.00" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs NJ DEP 2-hr WQ Rainfall=1.25" Area (sf) 0 Tc (min) 0.7 Length (feet) 100 0.4 154 1.1 254 CN 80 Description >75% Grass cover, Good, HSG D Slope Velocity Capacity Description (ft/ft) (ft/sec) (cfs) 0.0710 2.38 Sheet Flow, Smooth surfaces n= 0.011 P2= 3.47" 0.0930 6.19 Shallow Concentrated Flow, Paved Kv= 20.3 fps Total Subcatchment 14p: Perv Hydrograph 1 Runoff Flow (cfs) NJ DEP 2-hr WQ Rainfall=1.25" Runoff Area=0 sf Runoff Volume=0 cf Runoff Depth=0.00" Flow Length=254' Tc=1.1 min CN=0 0.00 cfs 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours)

NJ DEP 2-hr WQ Rainfall=1.25" Combined FT (8-22-24) Prepared by Contech Engineered Solutions HydroCAD® 10.20-3f s/n 00447 © 2023 HydroCAD Software Solutions LLC Printed 8/26/2024 Page 22 Summary for Subcatchment 15i: Imp Runoff = 0.06 cfs @ 1.08 hrs, Volume= Routed to Pond 15FT : 4x4 FT 75 cf, Depth= 1.03" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs NJ DEP 2-hr WQ Rainfall=1.25" Area (sf) 869 869 Tc (min) 0.4 Length (feet) 60 CN 98 Description Paved parking, HSG D 100.00% Impervious Area Slope Velocity Capacity Description (ft/ft) (ft/sec) (cfs) 0.0790 2.24 Sheet Flow, Smooth surfaces n= 0.011 P2= 3.47" Subcatchment 15i: Imp Hydrograph Runoff 0.065 0.06 cfs 0.06 0.055 0.05 Flow (cfs) 0.045 0.04 0.035 0.03 0.025 0.02 0.015 0.01 NJ DEP 2-hr WQ Rainfall=1.25" Runoff Area=869 sf Runoff Volume=75 cf Runoff Depth=1.03" Flow Length=60' Slope=0.0790 '/' Tc=0.4 min CN=98 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 Time (hours)

NJ DEP 2-hr WQ Rainfall=1.25" Combined FT (8-22-24) Prepared by Contech Engineered Solutions HydroCAD® 10.20-3f s/n 00447 © 2023 HydroCAD Software Solutions LLC Printed 8/26/2024 Page 23 Summary for Subcatchment 15p: Perv Runoff = 0.01 cfs @ 1.08 hrs, Volume= Routed to Pond 15FT : 4x4 FT 5 cf, Depth= 0.17" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs NJ DEP 2-hr WQ Rainfall=1.25" Area (sf) 368 368 Tc (min) 0.4 Length (feet) 60 CN 80 Description >75% Grass cover, Good, HSG D 100.00% Pervious Area Slope Velocity Capacity Description (ft/ft) (ft/sec) (cfs) 0.0790 2.24 Sheet Flow, Smooth surfaces n= 0.011 P2= 3.47" Subcatchment 15p: Perv Hydrograph 0.007 Runoff 0.01 cfs 0.007 0.006 0.005 0.005 Flow (cfs) 0.004 0.004 0.003 0.003 0.002 0.002 0.001 NJ DEP 2-hr WQ Rainfall=1.25" Runoff Area=368 sf Runoff Volume=5 cf Runoff Depth=0.17" Flow Length=60' Slope=0.0790 '/' Tc=0.4 min CN=80 0.001 0.000 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours)

NJ DEP 2-hr WQ Rainfall=1.25" Combined FT (8-22-24) Prepared by Contech Engineered Solutions HydroCAD® 10.20-3f s/n 00447 © 2023 HydroCAD Software Solutions LLC Printed 8/26/2024 Page 24 Summary for Subcatchment 16i: Imp Runoff = 0.07 cfs @ 1.08 hrs, Volume= Routed to Pond 16FT : 4x4 FT 83 cf, Depth= 1.03" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs NJ DEP 2-hr WQ Rainfall=1.25" Area (sf) 957 957 Tc (min) 0.6 Length (feet) 73 CN 98 Description Paved parking, HSG D 100.00% Impervious Area Slope Velocity Capacity Description (ft/ft) (ft/sec) (cfs) 0.0610 2.10 Sheet Flow, Smooth surfaces n= 0.011 P2= 3.47" Subcatchment 16i: Imp Hydrograph 0.075 Runoff 0.07 0.07 cfs 0.065 0.06 0.055 Flow (cfs) 0.05 0.045 0.04 0.035 0.03 0.025 0.02 0.015 NJ DEP 2-hr WQ Rainfall=1.25" Runoff Area=957 sf Runoff Volume=83 cf Runoff Depth=1.03" Flow Length=73' Slope=0.0610 '/' Tc=0.6 min CN=98 0.01 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 Time (hours)

NJ DEP 2-hr WQ Rainfall=1.25" Combined FT (8-22-24) Prepared by Contech Engineered Solutions HydroCAD® 10.20-3f s/n 00447 © 2023 HydroCAD Software Solutions LLC Printed 8/26/2024 Page 25 Summary for Subcatchment 16p: Perv Runoff = 0.00 cfs @ 1.08 hrs, Volume= Routed to Pond 16FT : 4x4 FT 3 cf, Depth= 0.17" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs NJ DEP 2-hr WQ Rainfall=1.25" Area (sf) 216 216 Tc (min) 0.6 Length (feet) 73 CN 80 Description >75% Grass cover, Good, HSG D 100.00% Pervious Area Slope Velocity Capacity Description (ft/ft) (ft/sec) (cfs) 0.0610 2.10 Sheet Flow, Smooth surfaces n= 0.011 P2= 3.47" Subcatchment 16p: Perv Hydrograph 0.004 0.00 cfs 0.004 0.004 0.003 Flow (cfs) 0.003 0.003 0.003 0.003 0.002 0.002 0.002 0.002 0.002 0.001 0.001 0.001 0.001 0.001 0.000 0.000 0 0 2 Runoff NJ DEP 2-hr WQ Rainfall=1.25" Runoff Area=216 sf Runoff Volume=3 cf Runoff Depth=0.17" Flow Length=73' Slope=0.0610 '/' Tc=0.6 min CN=80 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)

NJ DEP 2-hr WQ Rainfall=1.25" Combined FT (8-22-24) Prepared by Contech Engineered Solutions HydroCAD® 10.20-3f s/n 00447 © 2023 HydroCAD Software Solutions LLC Printed 8/26/2024 Page 26 Summary for Subcatchment 17i: Imp Runoff = 0.33 cfs @ 1.08 hrs, Volume= Routed to Pond 17FT : 8x6 FT 399 cf, Depth= 1.03" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs NJ DEP 2-hr WQ Rainfall=1.25" Area (sf) 4,626 4,626 Tc (min) 0.7 Length (feet) 100 0.9 200 1.6 300 CN 98 Description Paved parking, HSG D 100.00% Impervious Area Slope Velocity Capacity Description (ft/ft) (ft/sec) (cfs) 0.0700 2.36 Sheet Flow, Smooth surfaces n= 0.011 P2= 3.47" 0.0360 3.85 Shallow Concentrated Flow, Paved Kv= 20.3 fps Total Subcatchment 17i: Imp Hydrograph 0.36 Runoff 0.34 0.33 cfs NJ DEP 2-hr WQ Rainfall=1.25" Runoff Area=4,626 sf Runoff Volume=399 cf Runoff Depth=1.03" Flow Length=300' Tc=1.6 min CN=98 0.32 0.3 0.28 0.26 0.24 Flow (cfs) 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours)

NJ DEP 2-hr WQ Rainfall=1.25" Combined FT (8-22-24) Prepared by Contech Engineered Solutions HydroCAD® 10.20-3f s/n 00447 © 2023 HydroCAD Software Solutions LLC Printed 8/26/2024 Page 27 Summary for Subcatchment 17p: Perv Runoff = 0.02 cfs @ 1.09 hrs, Volume= Routed to Pond 17FT : 8x6 FT 17 cf, Depth= 0.17" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs NJ DEP 2-hr WQ Rainfall=1.25" Area (sf) 1,159 1,159 Tc (min) 0.7 Length (feet) 100 0.9 200 1.6 300 CN 80 Description >75% Grass cover, Good, HSG D 100.00% Pervious Area Slope Velocity Capacity Description (ft/ft) (ft/sec) (cfs) 0.0700 2.36 Sheet Flow, Smooth surfaces n= 0.011 P2= 3.47" 0.0360 3.85 Shallow Concentrated Flow, Paved Kv= 20.3 fps Total Subcatchment 17p: Perv Hydrograph 0.02 0.02 cfs 0.019 0.018 Flow (cfs) 0.017 0.016 0.015 0.014 0.013 0.012 0.011 0.01 0.009 0.008 0.007 0.006 0.005 0.004 0.003 0.002 0.001 0 0 2 Runoff NJ DEP 2-hr WQ Rainfall=1.25" Runoff Area=1,159 sf Runoff Volume=17 cf Runoff Depth=0.17" Flow Length=300' Tc=1.6 min CN=80 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)