21 Stormwater Mgmt Report_082025

NJ DEP 2-hr WQ Rainfall=1.25", P2=4.09" 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 Subcatchment E1i: Existing Impervious Subcatchment E1p: Existing Pervious Runoff Area=1.340 ac 100.00% Impervious Runoff Depth=1.03" Flow Length=441' Tc=3.1 min CN=0/98 Runoff=3.78 cfs 5,032 cf Runoff Area=0.020 ac 0.00% Impervious Runoff Depth=0.00" Flow Length=526' Tc=8.2 min CN=39/0 Runoff=0.00 cfs 0 cf Subcatchment P1i: Proposed Impervious Runoff Area=1.000 ac 100.00% Impervious Runoff Depth=1.03" Flow Length=443' Tc=3.0 min CN=0/98 Runoff=2.81 cfs 3,755 cf Runoff Area=0.270 ac 100.00% Impervious Runoff Depth=1.03" Flow Length=30' Slope=0.0150 '/' Tc=0.5 min CN=0/98 Runoff=0.81 cfs 1,014 cf Subcatchment P1i(pp): Proposed Subcatchment P1p: Proposed Pervious Runoff Area=0.090 ac 0.00% Impervious Runoff Depth=0.00" Flow Length=528' Tc=8.1 min CN=39/0 Runoff=0.00 cfs 0 cf Pond PP1: Pervious Pavement Peak Elev=366.95' Storage=1,014 cf Inflow=0.81 cfs 1,014 cf Outflow=0.00 cfs 0 cf Link E1: EDA 1A Inflow=3.78 cfs 5,032 cf Primary=3.78 cfs 5,032 cf Link P1: PDA 1A Inflow=2.81 cfs 3,755 cf Primary=2.81 cfs 3,755 cf Total Runoff Area = 118,483 sf Runoff Volume = 9,802 cf Average Runoff Depth = 0.99" 4.04% Pervious = 4,792 sf 95.96% Impervious = 113,692 sf