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T:\074211406\June11CityApp\Surface Water\ <br />ER Landfill 06_2011-dead storage affect Type ll 24-hr 25 yr Rainfall=4.70" <br />Prepared by Wenck Associates, Inc. Printed 8/15/2011 <br />HydroCADO 9.10 s/n 02201 ©2010 HydroCAD Software Solutions LLC Paae 8 <br />Summary for Subcatchment 1 B: 1 B <br />Runoff = 30.18 cfs @ 12.05 hrs, Volume= 1.784 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 />'` 392,876 77 Top of Landfill <br />392,876 100.00% Pervious Area <br />Tc Length Slope Velocity Capacity Description <br />(min) (feet) (ft/ft) (ft/sec) (cfs) <br />8.5 510 1.00 Direct Entry, <br />4.0 _ 600 2.50 Direct Entrv. <br />12.5 1,110 Total <br />Subcatchment 1 B: 1 B <br />Hydrograph <br />~~ <br />3.0.18 cfs ~ ~ _ ~ i p Runoff <br />30 ~ i ~ ~~Type' II 24-hr 25 ~r <br />Rain-fala 4.-70"- - <br />25 ~ Runoff Area=392 876sfI <br />~ ~ ~ ~ , ~ <br />__ -.-- _ _-~ __ -_,_- _; - `;Runo'ffi~olume='1.74 of ' <br />20 ~ I <br />_, unoff Depth=x.37" <br />.. _ _ _ _ - - - -- - -Flow Leri tli=1~ 110 <br />0 15 <br />~ ~ ~~ <br />9 ~~ <br />- Tc~1~.5-man-~ <br />10 ~ ~ ~ CN=77 <br />5 -- ,-- ~ ~ --- ---,, - ~ -- --;-- ~---~ -- - --- ~- - <br />0 ~ ~ ~ ..,~ ,,,,. - <br />0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 <br />Time (hours) <br />