2026-02 Existing and Proposed NJ DEP 2-hr WQ Rainfall=1.24"

Prepared by Dynamic Engineering Printed 2/10/2026

HydroCAD\circledR 10.20-8a s/n 08640 © 2025 HydroCAD Software Solutions LLC Page 9

Link 18L: Study Area Road Undetained (Total) Inflow=0.06 cfs 0.003 af

Primary=0.06 cfs 0.003 af

Total Runoff Area = 2.340 ac Runoff Volume = 0.074 af Average Runoff Depth = 0.38"

62.82% Pervious = 1.470 ac 37.18% Impervious = 0.870 ac

2026-02 Existing and Proposed NJ DEP 2-hr WQ Rainfall=1.24"

Prepared by Dynamic Engineering Printed 2/10/2026

HydroCAD\circledR 10.20-8a s/n 08640\circledC 2025 HydroCAD Software Solutions LLC Page 10

[45] Hint: Runoff=Zero

Runoff = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Depth= 0.00" Routed to Link 5L : Ex Study Area West (Total)

Runoff by SCS TR-20 method, UH=Delmarva, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.05 hrs NJ DEP 2-hr WQ Rainfall=1.24"

Area (ac) CN Description

0.930 39 >75% Grass cover, Good, HSG A

0.930 39 100.00% Pervious Area

Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description

8.4 47 0.0350 0.09 Sheet Flow, A-B Woods: Light underbrush n= 0.400 P2= 4.04" Using McCuen-Spiess flow length

0.4 51 0.0200 2.28 Shallow Concentrated Flow, B-C Unpaved Kv= 16.1 fps

Runoff