Report 4 13 2026

29906 15 Ridgeway West Orange Fin NOAA 24-hr D 100-Year-2050 Rainfall=11.52", P2=4.09" Prepared by Ensurplan Inc Printed 4/20/2026 HydroCAD® 10.20-8a s/n 11646 © 2025 HydroCAD Software Solutions LLC Page 30 Summary for Subcatchment 13S: Bypass Infiltration, Overland to Study Point at Inlet Runoff = 0.10 cfs @ 12.13 hrs, Volume= 0.008 af, Depth=11.28" Routed to Reach 12R : Study Point At Inlet Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-48.00 hrs, dt= 0.01 hrs NOAA 24-hr D 100-Year-2050 Rainfall=11.52", P2=4.09" Area (sf) CN Description * 384 98 Misc Impervious To Rear Property 384 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.8 65 0.0600 0.19 Sheet Flow, Grass: Dense n= 0.240 P2= 4.09" Subcatchment 13S: Bypass Infiltration, Overland to Study Point at Inlet Hydrograph 0.105 0.1 0.10 cfs Runoff 0.095 0.09 NOAA 24-hr D 0.085 100-Year-2050 Rainfall=11.52" 0.08 0.075 P2=4.09" 0.07 Runoff Area=384 sf 0.065 Runoff Volume=0.008 af Flow

Runoff Area=384 sf 0.065 Runoff Volume=0.008 af Flow (cfs) 0.06 0.055 Runoff Depth=11.28" 0.05 0.045 Flow Length=65' 0.04 Slope=0.0600 '/' 0.035 0.03 Tc=5.8 min 0.025 CN=98 0.02 0.015 0.01 0.005 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 Time (hours)