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T:\0742\1406\June11CityApplSurface Water\ <br />ER Landfill 06_2011 Type ll 24-hr 25 yr Rainfall=4.70" <br />Prepared by Wenck Associates,. Inc. Printed 8/2/2011 <br />HydroCAD® 9.10 s/n 02201 ©2010 HydroCAD Software Solutions LLC Page 7 <br />Summary for Subcatchment 1: 1 <br />Runoff = 32.77 cfs @ 12.05 hrs, Volume= 1.977 af, Depth= 2.37" <br />Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-96.00 hrs, dt= 0.02 hrs <br />Type II 24-hr 25 yr Rainfall=4.70" <br />Area (sf) CN Description <br />435,375 77 Top of Landfill <br />435,375 100.00% Pervious Area <br />Tc Length Slope Velocity Capacity Description <br />(min) (feet) (ft/ft) (ft/sec) (cfs) <br />9.0 540. 1.00 Direct Entry, <br />0.1 80 9.00 Direct Entry, <br />4.0 600 2.50 Direct Entrv. <br />13.1 1,220 Total <br />Subcatchment 1: 1 <br />