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 38 Summary for Pond 9FT: 6x4 FT Inflow Area = Inflow = Outflow = Primary = 2,320 sf, 88.36% Impervious, Inflow Depth = 0.93" for WQ event 0.15 cfs @ 1.08 hrs, Volume= 181 cf 0.15 cfs @ 1.08 hrs, Volume= 181 cf, Atten= 0%, Lag= 0.0 min 0.15 cfs @ 1.08 hrs, Volume= 181 cf Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 0.01' @ 1.08 hrs Surf.Area= 24 sf Storage= 0 cf Plug-Flow detention time= 0.0 min calculated for 181 cf (100% of inflow) Center-of-Mass det. time= 0.0 min ( 66.4 - 66.4 ) Volume #1 Device #1 Invert 0.00' Routing Primary Avail.Storage 18 cf Invert 0.00' Storage Description 6.00'W x 4.00'L x 0.75'H Prismatoid Outlet Devices 300.000 in/hr Exfiltration over Surface area Primary OutFlow Max=0.17 cfs @ 1.08 hrs HW=0.01' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.17 cfs @ 0.01 fps) Pond 9FT: 6x4 FT Hydrograph 0.16 0.15 0.14 0.13 0.12 Flow (cfs) 0.11 0.15 cfs 0.15 cfs Inflow Primary Inflow Area=2,320 sf Peak Elev=0.01' Storage=0 cf 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 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 39 Summary for Pond 10FT: 8x6 FT Inflow Area = Inflow = Outflow = Primary = 9,140 sf, 42.59% Impervious, Inflow Depth = 0.54" for WQ event 0.36 cfs @ 1.09 hrs, Volume= 411 cf 0.33 cfs @ 1.06 hrs, Volume= 411 cf, Atten= 8%, Lag= 0.0 min 0.33 cfs @ 1.06 hrs, Volume= 411 cf Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 0.05' @ 1.09 hrs Surf.Area= 48 sf Storage= 2 cf Plug-Flow detention time= (not calculated: outflow precedes inflow) Center-of-Mass det. time= 0.0 min ( 68.4 - 68.4 ) Volume #1 Device #1 Invert 0.00' Routing Primary Avail.Storage 36 cf Invert 0.00' Storage Description 8.00'W x 6.00'L x 0.75'H Prismatoid Outlet Devices 300.000 in/hr Exfiltration over Surface area Primary OutFlow Max=0.33 cfs @ 1.06 hrs HW=0.01' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.33 cfs @ 0.01 fps) Pond 10FT: 8x6 FT Flow (cfs) Hydrograph 0.4 0.36 cfs 0.38 0.36 0.33 cfs 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 Inflow Primary Inflow Area=9,140 sf Peak Elev=0.05' Storage=2 cf 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 40 Summary for Pond 11FT: 12x6 FT Inflow Area = Inflow = Outflow = Primary = 14,814 sf, 45.12% Impervious, Inflow Depth = 0.56" for WQ event 0.60 cfs @ 1.09 hrs, Volume= 694 cf 0.50 cfs @ 1.02 hrs, Volume= 681 cf, Atten= 17%, Lag= 0.0 min 0.50 cfs @ 1.02 hrs, Volume= 681 cf Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 0.24' @ 1.10 hrs Surf.Area= 72 sf Storage= 17 cf Plug-Flow detention time= (not calculated: outflow precedes inflow) Center-of-Mass det. time= 0.1 min ( 68.6 - 68.5 ) Volume #1 Device #1 Invert 0.00' Routing Primary Avail.Storage 54 cf Invert 0.00' Storage Description 12.00'W x 6.00'L x 0.75'H Prismatoid Outlet Devices 300.000 in/hr Exfiltration over Surface area Primary OutFlow Max=0.50 cfs @ 1.02 hrs HW=0.01' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.50 cfs @ 0.01 fps) Pond 11FT: 12x6 FT Hydrograph 0.65 0.60 cfs 0.6 0.55 0.50 cfs 0.5 Flow (cfs) 0.45 Inflow Primary Inflow Area=14,814 sf Peak Elev=0.24' Storage=17 cf 0.4 0.35 0.3 0.25 0.2 0.15 0.1 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 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 41 Summary for Pond 12FT: 6x4 FT Inflow Area = Inflow = Outflow = Primary = 2,694 sf,100.00% Impervious, Inflow Depth = 1.03" for WQ event 0.19 cfs @ 1.08 hrs, Volume= 232 cf 0.17 cfs @ 0.97 hrs, Volume= 237 cf, Atten= 12%, Lag= 0.0 min 0.17 cfs @ 0.97 hrs, Volume= 237 cf Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 0.35' @ 1.10 hrs Surf.Area= 24 sf Storage= 9 cf Plug-Flow detention time= (not calculated: outflow precedes inflow) Center-of-Mass det. time= 0.3 min ( 66.6 - 66.4 ) Volume #1 Device #1 Invert 0.00' Routing Primary Avail.Storage 18 cf Invert 0.00' Storage Description 6.00'W x 4.00'L x 0.75'H Prismatoid Outlet Devices 300.000 in/hr Exfiltration over Surface area Primary OutFlow Max=0.17 cfs @ 0.97 hrs HW=0.01' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.17 cfs @ 0.01 fps) Pond 12FT: 6x4 FT Hydrograph 0.21 0.19 cfs 0.2 0.19 0.18 0.17 cfs 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 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) Flow (cfs) Inflow Area=2,694 sf Peak Elev=0.35' Storage=9 cf Inflow Primary

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 42 Summary for Pond 13FT: 10x6 FT Inflow Area = Inflow = Outflow = Primary = 8,844 sf, 62.80% Impervious, Inflow Depth = 0.71" for WQ event 0.45 cfs @ 1.08 hrs, Volume= 526 cf 0.42 cfs @ 1.04 hrs, Volume= 517 cf, Atten= 7%, Lag= 0.0 min 0.42 cfs @ 1.04 hrs, Volume= 517 cf Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 0.07' @ 1.09 hrs Surf.Area= 60 sf Storage= 4 cf Plug-Flow detention time= 0.9 min calculated for 517 cf (98% of inflow) Center-of-Mass det. time= 0.0 min ( 67.0 - 67.0 ) Volume #1 Device #1 Invert 0.00' Routing Primary Avail.Storage 45 cf Invert 0.00' Storage Description 10.00'W x 6.00'L x 0.75'H Prismatoid Outlet Devices 300.000 in/hr Exfiltration over Surface area Primary OutFlow Max=0.42 cfs @ 1.04 hrs HW=0.01' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.42 cfs @ 0.01 fps) Pond 13FT: 10x6 FT Hydrograph Flow (cfs) 0.45 cfs 0.48 0.46 0.44 0.42 cfs 0.42 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 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours) Inflow Area=8,844 sf Peak Elev=0.07' Storage=4 cf Inflow Primary

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 43 Summary for Pond 14FT: 7.83x4.5 FT Inflow Area = Inflow = Outflow = Primary = 2,943 sf,100.00% Impervious, Inflow Depth = 1.03" for WQ event 0.21 cfs @ 1.08 hrs, Volume= 254 cf 0.21 cfs @ 1.08 hrs, Volume= 254 cf, Atten= 0%, Lag= 0.0 min 0.21 cfs @ 1.08 hrs, Volume= 254 cf Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 0.01' @ 1.08 hrs Surf.Area= 35 sf Storage= 0 cf Plug-Flow detention time= 0.0 min calculated for 254 cf (100% of inflow) Center-of-Mass det. time= 0.0 min ( 65.8 - 65.7 ) Volume #1 Device #1 Invert 0.00' Routing Primary Avail.Storage 26 cf Invert 0.00' Storage Description 7.83'W x 4.50'L x 0.75'H Prismatoid Outlet Devices 300.000 in/hr Exfiltration over Surface area Primary OutFlow Max=0.24 cfs @ 1.08 hrs HW=0.01' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.24 cfs @ 0.01 fps) Pond 14FT: 7.83x4.5 FT Hydrograph 0.23 0.21 cfs 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 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) Flow (cfs) Inflow Area=2,943 sf Peak Elev=0.01' Storage=0 cf Inflow Primary

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 44 Summary for Pond 15FT: 4x4 FT Inflow Area = Inflow = Outflow = Primary = 1,237 sf, 70.25% Impervious, Inflow Depth = 0.78" for WQ event 0.07 cfs @ 1.08 hrs, Volume= 80 cf 0.07 cfs @ 1.08 hrs, Volume= 80 cf, Atten= 0%, Lag= 0.0 min 0.07 cfs @ 1.08 hrs, Volume= 80 cf Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 0.00' @ 1.08 hrs Surf.Area= 16 sf Storage= 0 cf Plug-Flow detention time= 0.0 min calculated for 80 cf (100% of inflow) Center-of-Mass det. time= 0.0 min ( 65.9 - 65.9 ) Volume #1 Invert 0.00' Device #1 Routing Primary Avail.Storage 12 cf Invert 0.00' Storage Description 4.00'W x 4.00'L x 0.75'H Prismatoid Outlet Devices 300.000 in/hr Exfiltration over Surface area Primary OutFlow Max=0.11 cfs @ 1.08 hrs HW=0.00' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.11 cfs @ 0.01 fps) Pond 15FT: 4x4 FT Hydrograph 0.075 0.07 0.065 0.06 0.055 Flow (cfs) 0.05 0.07 cfs 0.07 cfs Inflow Primary Inflow Area=1,237 sf Peak Elev=0.00' Storage=0 cf 0.045 0.04 0.035 0.03 0.025 0.02 0.015 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 45 Summary for Pond 16FT: 4x4 FT Inflow Area = Inflow = Outflow = Primary = 1,173 sf, 81.59% Impervious, Inflow Depth = 0.88" for WQ event 0.07 cfs @ 1.08 hrs, Volume= 86 cf 0.07 cfs @ 1.08 hrs, Volume= 86 cf, Atten= 0%, Lag= 0.0 min 0.07 cfs @ 1.08 hrs, Volume= 86 cf Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 0.00' @ 1.08 hrs Surf.Area= 16 sf Storage= 0 cf Plug-Flow detention time= 0.0 min calculated for 86 cf (100% of inflow) Center-of-Mass det. time= 0.0 min ( 65.7 - 65.7 ) Volume #1 Invert 0.00' Device #1 Routing Primary Avail.Storage 12 cf Invert 0.00' Storage Description 4.00'W x 4.00'L x 0.75'H Prismatoid Outlet Devices 300.000 in/hr Exfiltration over Surface area Primary OutFlow Max=0.11 cfs @ 1.08 hrs HW=0.00' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.11 cfs @ 0.01 fps) Pond 16FT: 4x4 FT Hydrograph 0.08 0.07 cfs 0.075 0.07 cfs 0.07 0.065 0.06 0.055 Inflow Primary Inflow Area=1,173 sf Peak Elev=0.00' Storage=0 cf Flow (cfs) 0.05 0.045 0.04 0.035 0.03 0.025 0.02 0.015 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 46 Summary for Pond 17FT: 8x6 FT Inflow Area = Inflow = Outflow = Primary = 5,785 sf, 79.97% Impervious, Inflow Depth = 0.86" for WQ event 0.34 cfs @ 1.08 hrs, Volume= 416 cf 0.33 cfs @ 1.05 hrs, Volume= 414 cf, Atten= 3%, Lag= 0.0 min 0.33 cfs @ 1.05 hrs, Volume= 414 cf Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 0.03' @ 1.09 hrs Surf.Area= 48 sf Storage= 2 cf Plug-Flow detention time= 0.3 min calculated for 414 cf (100% of inflow) Center-of-Mass det. time= 0.0 min ( 66.7 - 66.7 ) Volume #1 Device #1 Invert 0.00' Routing Primary Avail.Storage 36 cf Invert 0.00' Storage Description 8.00'W x 6.00'L x 0.75'H Prismatoid Outlet Devices 300.000 in/hr Exfiltration over Surface area Primary OutFlow Max=0.33 cfs @ 1.05 hrs HW=0.01' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.33 cfs @ 0.01 fps) Pond 17FT: 8x6 FT Hydrograph 0.38 0.36 0.34 0.32 0.3 0.28 0.26 0.34 cfs 0.33 cfs Inflow Primary Inflow Area=5,785 sf Peak Elev=0.03' Storage=2 cf Flow (cfs) 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 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 47 Summary for Pond 18FT: 8x6 FT Inflow Area = Inflow = Outflow = Primary = 6,259 sf, 73.21% Impervious, Inflow Depth = 0.80" for WQ event 0.35 cfs @ 1.08 hrs, Volume= 419 cf 0.33 cfs @ 1.04 hrs, Volume= 414 cf, Atten= 5%, Lag= 0.0 min 0.33 cfs @ 1.04 hrs, Volume= 414 cf Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 0.05' @ 1.09 hrs Surf.Area= 48 sf Storage= 2 cf Plug-Flow detention time= 0.7 min calculated for 414 cf (99% of inflow) Center-of-Mass det. time= 0.0 min ( 66.8 - 66.8 ) Volume #1 Device #1 Invert 0.00' Routing Primary Avail.Storage 36 cf Invert 0.00' Storage Description 8.00'W x 6.00'L x 0.75'H Prismatoid Outlet Devices 300.000 in/hr Exfiltration over Surface area Primary OutFlow Max=0.33 cfs @ 1.04 hrs HW=0.01' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.33 cfs @ 0.01 fps) Pond 18FT: 8x6 FT Hydrograph 0.38 0.35 cfs 0.36 0.33 cfs 0.34 0.32 0.3 0.28 Flow (cfs) 0.26 Inflow Primary Inflow Area=6,259 sf Peak Elev=0.05' Storage=2 cf 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 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)