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C:�Program Files\HydroCAD�ProjectslHydroCAD Projects�08 JOBS1 <br /> 08175B Barry Sewail Proposed Conditions Type 1124-hr 100 Year Rainfa11=6.00" <br /> Prepared by Gronberg 8�Associates, Inc. Page 14 <br /> HydroCAD�8.00 sln 004529 �2006 HydroCAD Software Solutions LLC 11/13/2008 4:11:13 PM <br /> Subcatchment A1: Area 1 <br /> Runoff = 2.86 cfs� 12.03 hrs, Volume= 0.146 af, Depth> 1.65" <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 Rainfaii=6.00" <br /> Area (ac) CN Description <br /> 0.080 98 Paved parking&roofs <br /> 0.050 61 >75%Grass cover, Good, HSG B <br /> 0.930 55 Woods, Good, HSG B <br /> 1.060 59 Weighted Average <br /> 0.980 Pervious Area <br /> 0.080 Impervious Area <br /> Tc Length Slope Vefocity Capacity Description <br /> (min) (feet) (ft/ft) (ff/sec) (cfs) <br /> 10.0 Direct ErKry, <br /> Subcatchment A2: Area 2 <br /> Runoff = 2.20 cfs� 12.03 hrs, Volume= 0.113 af, Depth> 1.57" <br /> Runoff by SCS TR-20 method, UH=SCS,Time Span=5.00-20.00 hrs, dt=0.05 hrs <br /> Type II 24hr 100 Year Rainfa11=6.00" <br /> Area (ac) CN Description <br /> 0.020 98 Paved parking �roofs <br /> 0.240 61 >75% Grass cover, Good, HSG B <br /> 0.600 55 Woods, Good, HSG B <br /> 0.860 58 Weighted Average <br /> 0.840 Pervious Area <br /> 0.020 Impervious Area <br /> Tc Length Slope Velocity Capacity Description <br /> (min) (feet) (ft/ft) (ft/sec) (cfs) <br /> 10.0 Direct Errtry, <br /> Subcatchment A3: Area 3 <br /> Runoff = 5.57�fs cLD 12.04 hrs, Volume= 0.300 af, Depth> 2.57" <br /> Runoff by SCS TR-20 mett�od, UH=SCS, Time Span= 5.00-20.00 hrs, dt=0.05 hrs <br /> Type II 24-hr 100 Year Rainfa11=6.00" <br />