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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 22 <br /> Summary for Subcatchment PR 2: PROP DA 2 <br /> Runoff = 6.11 cfs @ 12.06 hrs, Volume= 0.356 af, Depth> 2.31" <br /> Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-20.00 hrs, dt= 0.01 hrs <br /> Type II 24-hr 10-YEAR Rainfall=4.24" <br /> Area (sf) CN Description <br /> 11,620 98 Paved parking, HSG D <br /> 68,964 80 >75% Grass cover, Good, HSG D <br /> 80,584 83 Weighted Average <br /> 68,964 85.58% Pervious Area <br /> 11,620 14.42% Impervious Area <br /> Tc Length Slope Velocity Capacity Description <br /> (min) (feet) (ft/ft) (ft/sec) (cfs) <br /> 14.3 100 0.0650 0.12 Sheet Flow, <br /> Woods: Light underbrush n= 0.400 P2= 2.83" <br /> Subcatchment PR 2: PROP DA 2 <br /> Hydrograph <br /> Runoff <br /> 6.11 cfs I <br /> 6 Type II 24-hr <br /> 10-YEAR Rainfall=4.24" <br /> 5 Runoff Area=80,584 sf <br /> Runoff Volume=0.356 af <br /> 4 <br /> Runoff Depth>2.31" �/ <br /> 3 Flow Length=100' <br /> Slope=0.0650 <br /> 2 Tc=14.3 min 0 <br /> CN=831 <br /> 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 <br /> Time (hours) <br />