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Rustys_Post-Construction - Copy Type II 24-hr 25-yr Rainfall=3.84" Prepared by Waves AE Printed 7/29/2026 HydroCAD® 10.20-7a s/n 13900 © 2025 HydroCAD Software Solutions LLC Page 8 Summary for Subcatchment 1: Subcat 1 Runoff = 2.12 cfs @ 11.96 hrs, Volume= 4,750 cf, Depth> 3.24" Routed to Link AP1 : SENECA ST Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 25-yr Rainfall=3.84" Area (sf) CN Description 733 73 Brush, Good, HSG D 16,839 98 Paved parking, HSG D 17,571 97 Weighted Average 733 4.17% Pervious Area 16,839 95.83% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 1: Subcat 1 Hydrograph Runoff 2.12 cfs 2 Type II 24-hr 25-yr Rainfall=3.84" Runoff Area=17,571 sf Runoff Volume=4,750 cf Flow (cfs) Runoff Depth>3.24" 1 Tc=6.0 min CN=97 0 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) Page 69 of 84