21 Stormwater Mgmt Report_082025

NOAA 24-hr D 2-Year-Current Rainfall=3.47", P2=3.47" NJA230139 - REV 0 Prepared by Bohler HydroCAD® 10.20-5c s/n 03478 © 2023 HydroCAD Software Solutions LLC Printed 8/6/2025 Page 6 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=1.340 ac 100.00% Impervious Runoff Depth=3.24" Flow Length=441' Tc=3.2 min CN=0/98 Runoff=4.41 cfs 15,743 cf Subcatchment E1i: Existing Impervious Subcatchment E1p: Existing Pervious Runoff Area=0.020 ac 0.00% Impervious Runoff Depth=0.01" Flow Length=526' Tc=8.6 min CN=39/0 Runoff=0.00 cfs 1 cf Subcatchment P1i: Proposed Impervious Runoff Area=1.000 ac 100.00% Impervious Runoff Depth=3.24" Flow Length=443' Tc=3.1 min CN=0/98 Runoff=3.30 cfs 11,749 cf Runoff Area=0.270 ac 100.00% Impervious Runoff Depth=3.24" Flow Length=30' Slope=0.0150 '/' Tc=0.5 min CN=0/98 Runoff=0.77 cfs 3,172 cf Subcatchment P1i(pp): Proposed Subcatchment P1p: Proposed Pervious Runoff Area=0.090 ac 0.00% Impervious Runoff Depth=0.01" Flow Length=528' Tc=8.5 min CN=39/0 Runoff=0.00 cfs 2 cf Pond PP1: Pervious Pavement Peak Elev=367.07' Storage=1,436 cf Inflow=0.77 cfs 3,172 cf Outflow=0.54 cfs 2,148 cf Link E1: EDA 1A Inflow=4.41 cfs 15,744 cf Primary=4.41 cfs 15,744 cf Link P1: PDA 1A Inflow=3.80 cfs 13,899 cf Primary=3.80 cfs 13,899 cf Total Runoff Area = 118,483 sf Runoff Volume = 30,667 cf Average Runoff Depth = 3.11" 4.04% Pervious = 4,792 sf 95.96% Impervious = 113,692 sf