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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 7 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1: Subcat 1 Runoff Area=17,571 sf 95.83% Impervious Runoff Depth>3.24" Tc=6.0 min CN=97 Runoff=2.12 cfs 4,750 cf Subcatchment 2: Subcat 2 Runoff Area=16,257 sf 34.84% Impervious Runoff Depth>1.91" Tc=6.0 min CN=82 Runoff=1.32 cfs 2,586 cf Subcatchment 3: Subcat 3 Runoff Area=630 sf 99.39% Impervious Runoff Depth>3.32" Tc=6.0 min CN=98 Runoff=0.08 cfs 175 cf Subcatchment 4: Subcat 4 Runoff Area=1,852 sf 97.97% Impervious Runoff Depth>3.24" Tc=6.0 min CN=97 Runoff=0.22 cfs 500 cf Subcatchment 5: Subcat 5 Runoff Area=2,495 sf 28.92% Impervious Runoff Depth>1.76" Tc=0.0 min CN=80 Runoff=0.22 cfs 366 cf Subcatchment 6: Subcat 6 Runoff Area=3,392 sf 99.91% Impervious Runoff Depth>3.32" Tc=0.0 min CN=98 Runoff=0.48 cfs 940 cf Pond 1P: INFIL. BED Peak Elev=646.82' Storage=340 cf Inflow=0.22 cfs 538 cf Discarded=0.00 cfs 221 cf Primary=0.00 cfs 0 cf Outflow=0.00 cfs 221 cf Pond 4P: INFIL. BED SAND Peak Elev=648.14' Storage=293 cf Inflow=0.48 cfs 940 cf Discarded=0.00 cfs 121 cf Primary=0.52 cfs 526 cf Outflow=0.52 cfs 647 cf Pond 5P: INFIL. BED Peak Elev=648.51' Storage=100 cf Inflow=0.08 cfs 175 cf Discarded=0.00 cfs 37 cf Primary=0.02 cfs 38 cf Outflow=0.02 cfs 75 cf Pond 6P: INFIL. BED 5 Peak Elev=645.64' Storage=2,521 cf Inflow=1.44 cfs 2,953 cf Discarded=0.01 cfs 431 cf Primary=0.00 cfs 0 cf Outflow=0.01 cfs 431 cf Link AP1: SENECA ST Inflow=2.12 cfs 4,750 cf Primary=2.12 cfs 4,750 cf Link AP2: BASIN Inflow=0.52 cfs 526 cf Primary=0.52 cfs 526 cf Total Runoff Area = 42,197 sf Runoff Volume = 9,317 cf Average Runoff Depth = 2.65" 31.15% Pervious = 13,144 sf 68.85% Impervious = 29,053 sf Page 68 of 84