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IVY PLACE - PROPOSED CONDITIONS <br /> 17059 - IVY PLACE - PROPOSED Type 1124-hr 100-YEAR Rainfall=7.50" <br /> Prepared by Microsoft Printed 7/17/2017 <br /> HydroCAD® 10.00-19 s/n 02202 ©2016 HydroCAD Software Solutions LLC Page 32 <br /> Time span=0.00-20.00 hrs, dt=0.01 hrs, 2001 points <br /> Runoff by SCS TR-20 method, UH=SCS, Weighted-CN <br /> Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method <br /> SubcatchmentPR 1A: PROP DA 1A Runoff Area=5,199 sf 50.51% Impervious Runoff Depth>5.84" <br /> Tc=6.0 min CN=89 Runoff=1.20 cfs 0.058 af <br /> SubcatchmentPR 1B: PROP DA 1B Runoff Area=8,297 sf 46.56% Impervious Runoff Depth>5.72" <br /> Tc=6.0 min CN=88 Runoff=1.90 cfs 0.091 af <br /> SubcatchmentPR 2: PROP DA 2 Runoff Area=80,584 sf 14.42% Impervious Runoff Depth>5.14" <br /> Flow Length=100' Slope=0.0650 '/' Tc=14.3 min CN=83 Runoff=13.12 cfs 0.792 af <br /> Reach 4R: TOTAL Inflow=15.32 cfs 0.938 af <br /> Outflow=15.32 cfs 0.938 af <br /> Pond 1P: UNDERGROUNDFILT DET POND 1 Peak Elev=931.34' Storage=527 cf Inflow=1.20 cfs 0.058 af <br /> Outflow=0.76 cfs 0.057 af <br /> Pond 2P: UNDERGROUND FILT DET POND 2 Peak Elev=931.32' Storage=813 cf Inflow=1.90 cfs 0.091 af <br /> Outflow=1.56 cfs 0.088 af <br /> Total Runoff Area = 2.160 ac Runoff Volume = 0.941 af Average Runoff Depth = 5.23" <br /> 80.75% Pervious = 1.744 ac 19.25% Impervious = 0.416 ac <br />