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IVY PLACE - PROPOSED CONDITIONS <br /> 17059 - IVY PLACE - PROPOSED Type 1124-hr 10-YEAR Rainfall=4.24" <br /> Prepared by Microsoft Printed 7/17/2017 <br /> HydroCAD® 10.00-19 s/n 02202 ©2016 HydroCAD Software Solutions LLC Page 19 <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>2.85" <br /> Tc=6.0 min CN=89 Runoff=0.62 cfs 0.028 af <br /> SubcatchmentPR 1B: PROP DA 1B Runoff Area=8,297 sf 46.56% Impervious Runoff Depth>2.76" <br /> Tc=6.0 min CN=88 Runoff=0.96 cfs 0.044 af <br /> SubcatchmentPR 2: PROP DA 2 Runoff Area=80,584 sf 14.42% Impervious Runoff Depth>2.31" <br /> Flow Length=100' Slope=0.0650 '1 Tc=14.3 min CN=83 Runoff=6.11 cfs 0.356 af <br /> Reach 4R: TOTAL Inflow=7.24 cfs 0.426 af <br /> Outflow=7.24 cfs 0.426 af <br /> Pond 1P: UNDERGROUNDFILT DET POND 1 Peak EIev=930.66' Storage=288 cf Inflow=0.62 cfs 0.028 af <br /> Outflow=0.46 cfs 0.028 af <br /> Pond 2P: UNDERGROUNDFILT DET POND 2 Peak EIev=930.83' Storage=575 cf Inflow=0.96 cfs 0.044 af <br /> Outflow=0.73 cfs 0.043 af <br /> Total Runoff Area = 2.160 ac Runoff Volume = 0.428 af Average Runoff Depth = 2.38" <br /> 80.75% Pervious = 1.744 ac 19.25% Impervious = 0.416 ac <br />