241018_42 ERW_Stormwater Report_compiled

NOAA 24-hr D 100-Year Rainfall=8.66"240924_42 ERW Waymaker Printed 10/17/2024Prepared by Colliers Engineering & Design Page 21HydroCAD® 10.20-4b s/n 04431 © 2023 HydroCAD Software Solutions LLC Summary for Subcatchment EDA-1 (PERV): Runoff = 11.62 cfs @ 12.21 hrs, Volume= 1.081 af, Depth= 5.52" Routed to Reach DP1-EX : Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.05 hrs NOAA 24-hr D 100-Year Rainfall=8.66" Area (sf) CN Description 102,351 74 >75% Grass cover, Good, HSG C 102,351 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.9 100 0.0140 0.15 Sheet Flow, Grass: Short n= 0.150 P2= 3.44" 2.2 401 0.0350 3.01 Shallow Concentrated Flow, Unpaved Kv= 16.1 fps 13.1 501 Total Subcatchment EDA-1 (PERV): Runoff Hydrograph Time (hours) 727068666462605856545250484644424038363432302826242220181614121086420 Flow (cfs) 13 12 11 10 9 8 7 6 5 4 3 2 1 0 NOAA 24-hr D 100-Year Rainfall=8.66" Runoff Area=102,351 sf Runoff Volume=1.081 af Runoff Depth=5.52" Flow Length=501' Tc=13.1 min CN=74 11.62 cfs This document was created by an application that isn’t licensed to use novaPDF. Purchase a license to generate PDF files without this notice.

NOAA 24-hr D 100-Year Rainfall=8.66"240924_42 ERW Waymaker Printed 10/17/2024Prepared by Colliers Engineering & Design Page 22HydroCAD® 10.20-4b s/n 04431 © 2023 HydroCAD Software Solutions LLC Summary for Subcatchment EDA-2 (PERV.): Runoff = 2.54 cfs @ 12.14 hrs, Volume= 0.195 af, Depth= 5.52" Routed to Reach DP2-EX : Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.05 hrs NOAA 24-hr D 100-Year Rainfall=8.66" Area (sf) CN Description 18,430 74 >75% Grass cover, Good, HSG C 18,430 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.1 100 0.0410 0.24 Sheet Flow, Grass: Short n= 0.150 P2= 3.44" 0.1 21 0.1050 5.22 Shallow Concentrated Flow, Unpaved Kv= 16.1 fps 7.2 121 Total Subcatchment EDA-2 (PERV.): Runoff Hydrograph Time (hours) 727068666462605856545250484644424038363432302826242220181614121086420 Flow (cfs) 2 1 0 NOAA 24-hr D 100-Year Rainfall=8.66" Runoff Area=18,430 sf Runoff Volume=0.195 af Runoff Depth=5.52" Flow Length=121' Tc=7.2 min CN=74 2.54 cfs This document was created by an application that isn’t licensed to use novaPDF. Purchase a license to generate PDF files without this notice.

NOAA 24-hr D 100-Year Rainfall=8.66"240924_42 ERW Waymaker Printed 10/17/2024Prepared by Colliers Engineering & Design Page 23HydroCAD® 10.20-4b s/n 04431 © 2023 HydroCAD Software Solutions LLC Summary for Reach DP1-EX: [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 2.669 ac, 11.97% Impervious, Inflow Depth = 5.87" for 100-Year event Inflow = 12.64 cfs @ 12.20 hrs, Volume= 1.305 af Outflow = 12.64 cfs @ 12.20 hrs, Volume= 1.305 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 0.00-72.00 hrs, dt= 0.05 hrs Reach DP1-EX: Inflow Outflow Hydrograph Time (hours) 727068666462605856545250484644424038363432302826242220181614121086420 Flow (cfs) 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=2.669 ac 12.64 cfs 12.64 cfs This document was created by an application that isn’t licensed to use novaPDF. Purchase a license to generate PDF files without this notice.

NOAA 24-hr D 100-Year Rainfall=8.66"240924_42 ERW Waymaker Printed 10/17/2024Prepared by Colliers Engineering & Design Page 24HydroCAD® 10.20-4b s/n 04431 © 2023 HydroCAD Software Solutions LLC Summary for Reach DP2-EX: [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 0.423 ac, 0.00% Impervious, Inflow Depth = 5.52" for 100-Year event Inflow = 2.54 cfs @ 12.14 hrs, Volume= 0.195 af Outflow = 2.54 cfs @ 12.14 hrs, Volume= 0.195 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 0.00-72.00 hrs, dt= 0.05 hrs Reach DP2-EX: Inflow Outflow Hydrograph Time (hours) 727068666462605856545250484644424038363432302826242220181614121086420 Flow (cfs) 2 1 0 Inflow Area=0.423 ac 2.54 cfs 2.54 cfs This document was created by an application that isn’t licensed to use novaPDF. Purchase a license to generate PDF files without this notice.

NJ DEP 2-hr WQ Rainfall=1.25"240924_42 ERW Waymaker Printed 10/17/2024Prepared by Colliers Engineering & Design Page 25HydroCAD® 10.20-4b s/n 04431 © 2023 HydroCAD Software Solutions LLC Time span=0.00-72.00 hrs, dt=0.05 hrs, 1441 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Runoff Area=13,913 sf 100.00% Impervious Runoff Depth=1.03"Subcatchment EDA-1 (IMPERV): Flow Length=275' Tc=2.8 min CN=98 Runoff=0.96 cfs 0.028 af Runoff Area=102,351 sf 0.00% Impervious Runoff Depth=0.07"Subcatchment EDA-1 (PERV): Flow Length=501' Tc=13.1 min CN=74 Runoff=0.28 cfs 0.014 af Runoff Area=18,430 sf 0.00% Impervious Runoff Depth=0.07"Subcatchment EDA-2 (PERV.): Flow Length=121' Tc=7.2 min CN=74 Runoff=0.06 cfs 0.003 af Inflow=0.96 cfs 0.042 afReach DP1-EX: Outflow=0.96 cfs 0.042 af Inflow=0.06 cfs 0.003 afReach DP2-EX: Outflow=0.06 cfs 0.003 af Total Runoff Area = 3.092 ac Runoff Volume = 0.045 af Average Runoff Depth = 0.17" 89.67% Pervious = 2.773 ac 10.33% Impervious = 0.319 ac This document was created by an application that isn’t licensed to use novaPDF. Purchase a license to generate PDF files without this notice.

NJ DEP 2-hr WQ Rainfall=1.25"240924_42 ERW Waymaker Printed 10/17/2024Prepared by Colliers Engineering & Design Page 26HydroCAD® 10.20-4b s/n 04431 © 2023 HydroCAD Software Solutions LLC Summary for Subcatchment EDA-1 (IMPERV): [49] Hint: Tc<2dt may require smaller dt Runoff = 0.96 cfs @ 1.05 hrs, Volume= 0.028 af, Depth= 1.03" Routed to Reach DP1-EX : Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.05 hrs NJ DEP 2-hr WQ Rainfall=1.25" Area (sf) CN Description 13,913 98 Paved parking, HSG C 13,913 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 1.1 78 0.0150 1.21 Sheet Flow, Smooth surfaces n= 0.011 P2= 3.44" 1.0 12 0.0800 0.20 Sheet Flow, Grass: Short n= 0.150 P2= 3.44" 0.7 185 0.0830 4.64 Shallow Concentrated Flow, Unpaved Kv= 16.1 fps 2.8 275 Total Subcatchment EDA-1 (IMPERV): Runoff Hydrograph Time (hours) 727068666462605856545250484644424038363432302826242220181614121086420 Flow (cfs) 1 0 NJ DEP 2-hr WQ Rainfall=1.25" Runoff Area=13,913 sf Runoff Volume=0.028 af Runoff Depth=1.03" Flow Length=275' Tc=2.8 min CN=98 0.96 cfs This document was created by an application that isn’t licensed to use novaPDF. Purchase a license to generate PDF files without this notice.

NJ DEP 2-hr WQ Rainfall=1.25"240924_42 ERW Waymaker Printed 10/17/2024Prepared by Colliers Engineering & Design Page 27HydroCAD® 10.20-4b s/n 04431 © 2023 HydroCAD Software Solutions LLC Summary for Subcatchment EDA-1 (PERV): Runoff = 0.28 cfs @ 1.32 hrs, Volume= 0.014 af, Depth= 0.07" Routed to Reach DP1-EX : Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.05 hrs NJ DEP 2-hr WQ Rainfall=1.25" Area (sf) CN Description 102,351 74 >75% Grass cover, Good, HSG C 102,351 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.9 100 0.0140 0.15 Sheet Flow, Grass: Short n= 0.150 P2= 3.44" 2.2 401 0.0350 3.01 Shallow Concentrated Flow, Unpaved Kv= 16.1 fps 13.1 501 Total Subcatchment EDA-1 (PERV): Runoff Hydrograph Time (hours) 727068666462605856545250484644424038363432302826242220181614121086420 Flow (cfs) 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 NJ DEP 2-hr WQ Rainfall=1.25" Runoff Area=102,351 sf Runoff Volume=0.014 af Runoff Depth=0.07" Flow Length=501' Tc=13.1 min CN=74 0.28 cfs This document was created by an application that isn’t licensed to use novaPDF. Purchase a license to generate PDF files without this notice.

NJ DEP 2-hr WQ Rainfall=1.25"240924_42 ERW Waymaker Printed 10/17/2024Prepared by Colliers Engineering & Design Page 28HydroCAD® 10.20-4b s/n 04431 © 2023 HydroCAD Software Solutions LLC Summary for Subcatchment EDA-2 (PERV.): Runoff = 0.06 cfs @ 1.22 hrs, Volume= 0.003 af, Depth= 0.07" Routed to Reach DP2-EX : Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.05 hrs NJ DEP 2-hr WQ Rainfall=1.25" Area (sf) CN Description 18,430 74 >75% Grass cover, Good, HSG C 18,430 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.1 100 0.0410 0.24 Sheet Flow, Grass: Short n= 0.150 P2= 3.44" 0.1 21 0.1050 5.22 Shallow Concentrated Flow, Unpaved Kv= 16.1 fps 7.2 121 Total Subcatchment EDA-2 (PERV.): Runoff Hydrograph Time (hours) 727068666462605856545250484644424038363432302826242220181614121086420 Flow (cfs) 0.065 0.06 0.055 0.05 0.045 0.04 0.035 0.03 0.025 0.02 0.015 0.01 0.005 0 NJ DEP 2-hr WQ Rainfall=1.25" Runoff Area=18,430 sf Runoff Volume=0.003 af Runoff Depth=0.07" Flow Length=121' Tc=7.2 min CN=74 0.06 cfs This document was created by an application that isn’t licensed to use novaPDF. Purchase a license to generate PDF files without this notice.

NJ DEP 2-hr WQ Rainfall=1.25"240924_42 ERW Waymaker Printed 10/17/2024Prepared by Colliers Engineering & Design Page 29HydroCAD® 10.20-4b s/n 04431 © 2023 HydroCAD Software Solutions LLC Summary for Reach DP1-EX: [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 2.669 ac, 11.97% Impervious, Inflow Depth = 0.19" for WQ event Inflow = 0.96 cfs @ 1.05 hrs, Volume= 0.042 af Outflow = 0.96 cfs @ 1.05 hrs, Volume= 0.042 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 0.00-72.00 hrs, dt= 0.05 hrs Reach DP1-EX: Inflow Outflow Hydrograph Time (hours) 727068666462605856545250484644424038363432302826242220181614121086420 Flow (cfs) 1 0 Inflow Area=2.669 ac 0.96 cfs 0.96 cfs This document was created by an application that isn’t licensed to use novaPDF. Purchase a license to generate PDF files without this notice.

NJ DEP 2-hr WQ Rainfall=1.25"240924_42 ERW Waymaker Printed 10/17/2024Prepared by Colliers Engineering & Design Page 30HydroCAD® 10.20-4b s/n 04431 © 2023 HydroCAD Software Solutions LLC Summary for Reach DP2-EX: [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 0.423 ac, 0.00% Impervious, Inflow Depth = 0.07" for WQ event Inflow = 0.06 cfs @ 1.22 hrs, Volume= 0.003 af Outflow = 0.06 cfs @ 1.22 hrs, Volume= 0.003 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 0.00-72.00 hrs, dt= 0.05 hrs Reach DP2-EX: Inflow Outflow Hydrograph Time (hours) 727068666462605856545250484644424038363432302826242220181614121086420 Flow (cfs) 0.065 0.06 0.055 0.05 0.045 0.04 0.035 0.03 0.025 0.02 0.015 0.01 0.005 0 Inflow Area=0.423 ac 0.06 cfs 0.06 cfs This document was created by an application that isn’t licensed to use novaPDF. Purchase a license to generate PDF files without this notice.