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C:1Program Files�-IydroCAD�Pro�ects\HydroCAD Pro�ects\08 JOBS\ <br /> 08175B Barry Sewall Proposed Conditions May 13, 2009 Type 1124hr 10 Year Rainf�11=4.20" <br /> Prepared by Gronberg 8�Associates, Inc. Printed 5I20/2009 9:09:37 AM <br /> HydroCAD�9 00 s/n 04529 �2009 HydroCAD Software Solutions LLC Pa4e 13 <br /> Summary for Subcatchment A1: Area 1 <br /> Runoff = 0.96 cfs @ 12.05 hrs, Volume= 0.057 af, Depth> 0.66" <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 /> 0.070 98 Paved parking & roofs <br /> 0.030 61 >75%Grass cover, Good, HSG B <br /> 0.930 55 Woods, Good, HSG B <br /> 1.030 58 Weighted Average <br /> 0.960 93.20% Pervious Area <br /> 0.070 6.80% Impervious Area <br /> Tc Length Slope Velocity Capacity Description <br /> (min) (feet) (fUft) (ft/sec) (cfs) <br /> 11.0 Direct EMry, <br />