29906 15 Ridgeway West Orange 5 26 26 HydroCAD Report

29906 15 Ridgeway West Orange Seco NOAA 24-hr D 2-Year-2050 Rainfall=4.09", P2=4.09" Prepared by Ensurplan Inc Printed 5/26/2026 HydroCAD® 10.20-8a s/n 11646 © 2025 HydroCAD Software Solutions LLC Page 24 Summary for Subcatchment 17S: Bypass Area Direct To Inlet Runoff = 0.20 cfs @ 12.33 hrs, Volume= 0.023 af, Depth= 1.66" Routed to Reach 12R : Study Point At Inlet Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs NOAA 24-hr D 2-Year-2050 Rainfall=4.09", P2=4.09" Area (sf) CN Description 7,274 74 >75% Grass cover, Good, HSG C 7,274 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 22.2 231 0.0260 0.17 Sheet Flow, Grass: Dense n= 0.240 P2= 4.09" Subcatchment 17S: Bypass Area Direct To Inlet Hydrograph Runoff 0.21 0.20 cfs 0.2 0.19 NOAA 24-hr D 0.18 0.17 2-Year-2050 Rainfall=4.09" 0.16 P2=4.09" 0.15 0.14 Runoff Area=7,274 sf 0.13 Runoff Volume=0.023 af Flow (cfs) 0.12 0.11 Runoff Depth=1.66"

Runoff Volume=0.023 af Flow (cfs) 0.12 0.11 Runoff Depth=1.66" 0.1 0.09 Flow Length=231' 0.08 0.07 Slope=0.0260 '/' 0.06 Tc=22.2 min 0.05 0.04 CN=74 0.03 0.02 0.01 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 Time (hours)