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C:1Program Files�FlydroCAD�ProjectsUiydroCAD Projeats\08 JOBS1 <br /> 08175B Barry Sewall Proposed Conditions May 13, 2009 Type II 24-hr 10 Year Rainia11=4.20" <br /> Prepared by Gronberg &Associates, Inc. Printed 5/20/2009 9:31:36 AM <br /> HydroCAD�9.00 s/n 04529 �2009 HydroCAD Soflware Solutions LLC Paae 14 <br /> Summary for Subcatchment A4: Area 4 <br /> Runoff = 1.43 cfs cLD 12.03 hrs, Volume= 0.073 af, Depth> 1.14" <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 /> 0.131 98 Paved parking�roofs <br /> 0.600 61 >75%Grass cover, Good, HSG B <br /> 0.040 55 Woods, Good. HSG B <br /> 0.771 67 Weighted Average <br /> 0.640 83.01% Pervious Area <br /> 0.131 16.99% Impervious Area <br /> Tc Length Slope Velocity Capacity Description <br /> (min) (feet) (ft/ft) (ft/sec) (cfs) <br /> 10.0 Dir+ect Entry, <br />