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� <br /> C:1Program FileslHydroCAD�ProjectsWydroCAD Projects\08 JOBS\ <br /> 08175B Barry Sewall Proposed Conditions May 13, 2009 ( Type !l 24hr 2 Year Rainfall=2.75" <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 7 <br /> Summary for Subcatchmer�t A5: Area 5 <br /> Runoff = 0.41 cfs(a� 12.13 hrs, Volume= 0.029 af, Depth> 0.59" <br /> Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs <br /> Type II 24hr 2 Year Rainfall=2.75" <br /> Area (ac) CN Description <br /> 0.180 98 Paved parking& roofs <br /> 0.370 61 >75%Grass cover, Good, HSG B <br /> 0.050 55 Woods, Good, HSG B <br /> 0.600 72 Weighted Average <br /> 0.420 70.00% Pervious Area <br /> 0.180 30.00% Impervious Area <br /> Tc Length Slope Velocity Capacity Description <br /> (min) (feet) (ft/ft) (ft/sec) (cfs) <br /> 18.0 Direct Entry, <br />