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� <br /> C:\Program Files\HydroCAD�Projects\HydroCAD Projects\08 JOBS\ <br /> 081756 Barry Sewall Proposed Conditions May 13, 2009 Type 1124-hr 100 Year Rainfall=6.00" <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 Pa�e 22 <br /> Summary for Subcatchment A4: Area 4 <br /> Runoff = 2.95 cfs(c� 12.02 hrs, Volume= 0.148 af, Depth> 2.31" <br /> Runoff by SCS TR-20 method, UH=SCS,Time Span= 5.00-20.00 hrs, dt= 0.05 hrs <br /> Type II 24-hr 100 Year Rainfa11=6.00" <br /> Area (ac) CN Description <br /> 0.131 98 Paved parking 8 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) (fUsec) (efs) <br /> 10.0 Direct Entry, <br />