09 Stormwater Mgmt Report 122025

NOAA 24-hr D 100-Year-Current Rainfall=9.18", P2=3.47" NJA230139 - REV 2 Prepared by Bohler Engineering, PC HydroCAD® 10.20-7a s/n 03478 © 2025 HydroCAD Software Solutions LLC Printed 12/11/2025 Page 26 Time span=0.00-72.00 hrs, dt=0.10 hrs, 721 points x 9 Runoff by SCS TR-20 method, UH=SCS, Split Pervious/Imperv. Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method Runoff Area=1.930 ac 100.00% Impervious Runoff Depth=8.94" Flow Length=441' Tc=3.2 min CN=0/98 Runoff=16.97 cfs 62,630 cf Subcatchment E1i: Existing Impervious Runoff Area=0.020 ac 0.00% Impervious Runoff Depth=1.69" Flow Length=526' Tc=8.6 min CN=39/0 Runoff=0.03 cfs 123 cf Subcatchment E1p: Existing Pervious Subcatchment P1i: Proposed Impervious Runoff Area=1.600 ac 100.00% Impervious Runoff Depth=8.94" Flow Length=443' Tc=3.1 min CN=0/98 Runoff=14.08 cfs 51,921 cf Runoff Area=0.270 ac 100.00% Impervious Runoff Depth=8.94" Flow Length=30' Slope=0.0150 '/' Tc=0.5 min CN=0/98 Runoff=2.07 cfs 8,762 cf Subcatchment P1i(pp): Proposed Subcatchment P1p: Proposed Pervious Pond PP1: Pervious Pavement Runoff Area=0.090 ac 0.00% Impervious Runoff Depth=1.69" Flow Length=528' Tc=8.5 min CN=39/0 Runoff=0.12 cfs 552 cf Peak Elev=367.21' Storage=1,916 cf Inflow=2.07 cfs 8,762 cf Outflow=1.72 cfs 7,737 cf Link E1: EDA 1A Inflow=16.99 cfs 62,752 cf Primary=16.99 cfs 62,752 cf Link P1: PDA 1A Inflow=15.85 cfs 60,210 cf Primary=15.85 cfs 60,210 cf Total Runoff Area = 170,320 sf Runoff Volume = 123,986 cf Average Runoff Depth = 8.74" 2.81% Pervious = 4,792 sf 97.19% Impervious = 165,528 sf