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Rustys_Pre-Construction - Copy Type II 24-hr 10-yr Rainfall=3.14" 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 = 2.20 cfs @ 11.96 hrs, Volume= 4,600 cf, Depth> 2.24" 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 10-yr Rainfall=3.14" Area (sf) CN Description 4,948 73 Brush, Good, HSG D 19,708 98 Paved parking, HSG D 24,656 93 Weighted Average 4,948 20.07% Pervious Area 19,708 79.93% 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 2.20 cfs Type II 24-hr 2 10-yr Rainfall=3.14" Runoff Area=24,656 sf Runoff Volume=4,600 cf Flow (cfs) Runoff Depth>2.24" Tc=6.0 min 1 CN=93 0 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) Page 58 of 84