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C:\Program Files\HydroCAD�Projects�FlydroCAD Projects\08 JOBS\ <br /> 081756 Barry Sewall Proposed Conditions May 13, 2009 Type II 24-hr 10 Year Rainfa11=4.20" <br /> Prepared by Gronberg &Associates, Inc. Printed 5/20/2009 9:09:37 AM <br /> HydroCAD�9 00 s/n 04529 �2009 HydroCAD Software Sotutions LLC Pa�e 14 <br /> Summary for Subcatchment A2: Area 2 <br /> Runoff = 0.66 cfs @ 12.01 hrs, Volume= 0.032 af, Depth> 1.59" <br /> Runoff by SCS TR-20 method, UH=SCS,Time Span=5.00-20.00 hrs, dt=0.05 hrs <br /> Type II 24hr 10 Year Rainfa11=4.20" <br /> Area(ac) CN Description <br /> 0.100 98 Paved parking &roofs <br /> 0.060 61 >75%Grass cover, Good, HSG B <br /> 0.080 55 Woods, Good, HSG B <br /> 0.240 74 Weighted Average <br /> 0.140 58.33% Pervious Area <br /> 0.100 41.67% Impervious Area <br /> Tc Length Slope Velocity Capacity Description <br /> (min) (feet) (fUft) (ft/sec) (afs) <br /> 9.0 Direct Entry, <br />