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T:\0742\14061June11 CityApp\Surface Water\ <br />ER Landfill 06_2011-dead storage affect Type 11 24-hr 100 yr Rainfall=5.90" <br />Prepared by Wenck Associates, Inca Printed 8/15/2011 <br />HydroCAD® 9.10 s/n 02201 ©2010 HydroCAD Software Solutions LLC Page 55 <br />Summary for Subcatchment 9: 8 <br />Runoff = 6.74 cfs @ 11.98 hrs, Volume= 0.333 af, Depth= 3.69" <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 (sfl CN Description <br />47,226 80 side of Landfill <br />47,226 100.00% Pervious Area <br />Tc Length Sfope Velocity Capacity Description <br />(min) (feet) (ft!ft) (ft/sec) (cfs) <br />0.3 150 9.00 Direct Entry, <br />6.7 800 2.00 Direct Entrv. <br />7.0 950 Tota{ <br />Subcatchment 9: 8 <br />Hydrograph <br />Runoff <br />6.74 cfs- - _~ _ _ - ' - ' _ <br />7 - <br />Ty~pel 11 24 hr 1;00 ~yr <br />- ,, - <br />g '~ ~ ~ Rainfall=;5.9p" - <br />~~~ ~ ~ ~ ~~ -- _ ; _ _.1 Run_off_Area=47_,228,~sf_;. <br />5 ~ ~ ~ Run~off'Volume=0.333 ~af <br />y ~ <br />~ 4 - ~ - - _ _ _ _ _ Runoff~Depth=3.69" - <br />v <br />3 ~~ ~ ~ ~ ~ ~, Flow Length; 9~0' <br />~, _ _~. _ ~ ~ -- J _ <br />c ~ _ ~ - - -_--- --, <br />- - - _ - _ ~- - - - _Crl .=8.0 -~ <br />2 <br />~~ ~ ~ ~ ~~ <br />_ -1 - - - ---_ ~ _ ----- _ ------ <br />1 <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 />