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T:\0742\1406\June11 CityApplSurface Water\ <br />ER Landfill 06_2011-dead storage affect Type 1124-hr 100 yr Rainfall=5.90" <br />Prepared by Wenck Associates, Inc. Printed 8/15/2011 <br />HydroCAD® 9.10 s/n 02201 ©2010 HydroCAD Software Solutions LLC Page 59 <br />Summary for Subcatchment 25S: watershed NW of South Expansion <br />Runoff = 4.19 cfs @ 12.11 hrs, Volume= 0.397 af, Depth= 0.80" <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 100 yr Rainfall=5.90" <br />Area (ac) CN Description <br />5.550 43 Woods/grass comb., Fair, HSG A <br />0.260 78 Meadow, non-grazed, HSG D <br />0.120 98 rail bed <br />5.930 46 Weighted Average <br />5.810 97.98% Pervious Area <br />0.120 2.02% Impervious Area <br />Tc Length Slope Velocity Capacity Description <br />(min) (feet) (ft/ft) (ft/sec) (cfs) <br />15.0 Direct Entry, <br />Subcatchment 25S: watershed NW of South Expansion <br />