Stormwater Management Report Feb 2026 resubmissionrcd 2 26 2026

2026-02 Proposed Conditions - AJH NJ DEP 2-hr WQ Rainfall=1.25", P2=4.09" Prepared by Dynamic Engineering Printed 2/16/2026 HydroCAD® 10.20-7a s/n 08640 © 2025 HydroCAD Software Solutions LLC Page 2 Summary for Subcatchment 6S: PDA #1 - Impervious to Bio Runoff = 0.28 cfs @ 1.08 hrs, Volume= 0.008 af, Depth= 1.03" Routed to Pond 2P : BIO BASIN Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.001 hrs NJ DEP 2-hr WQ Rainfall=1.25", P2=4.09" Area (sf) CN Description 3,921 98 Paved parking, HSG B 3,921 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 0.4 42 0.0326 1.59 Sheet Flow, A-B Smooth surfaces n= 0.011 P2= 4.09" 0.1 18 0.1180 5.53 Shallow Concentrated Flow, B-C (RIP-RAP) Unpaved Kv= 16.1 fps 0.5 60 Total Subcatchment 6S: PDA #1 - Impervious to Bio Hydrograph Runoff 0.30.28 cfs 0.28 NJ DEP 2-hr 0.26 0.24 WQ Rainfall=1.25" 0.22 P2=4.09" 0.2 Runoff Area=3,921 sf 0.18 Flow (cfs) 0.16 Runoff Volume=0.008 af 0.14 Runoff

0.16 Runoff Volume=0.008 af 0.14 Runoff Depth=1.03" 0.12 Flow Length=60' 0.1 0.08 Tc=0.5 min 0.06 CN=98 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)