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I <br /> Preliminary Stormwater Site Plan Everett, WA <br /> II Edgewater Creek Drainage Area: <br /> g g <br /> 1 PRE-EW Event Summary <br /> Event Peak Q (cfs) [Peak T (hrs)jHyd Vol (acft) [Area (ac)!Method iRaintype <br /> 6 mo 0.1614 22.00 j 0.1786 22.5000 1 SBUH ,TYPE1A [ <br /> 2 year 0.5076 10.00 1 0.6390 22.5000 [ SBUH F TYPE1 A <br /> I ! 10 year 2.2315 j 8.67 [ 1.9018 122.5000 , SBUH F TYPEI A <br /> r 100 year( 3.6595 8.67 r 2.8281 '22.5000 j SBUH [TYPE 1 A <br /> I Record Id: PRE-EW <br /> !Design Method -I -- ._ -- _ --- <br /> SBUH 'Rainfall type i TYPE1A <br /> Hyd Intv 10.00 min Peaking Factor i 484.00 <br /> [ I [Abstraction Coeff 0.20 <br /> Pervious Area (AMC 2) ; 22.50 ac DCIA 0.00 ac <br /> Pervious CN 81.00 1DC CN 0.00 --- <br /> Pervious TC ( 63.17 min DC TC ( 0.00 min <br /> i Pervious CN Calc <br /> j Description ! SubArea n Sub cn <br /> 11 Wood/forest land (young 2nd growth/brush) I 22.50 ac 81.00 <br /> I <br /> F Pervious Composited CN (AMC 2) j 81.00 <br /> l r_.__._ Pervious TC Calc <br /> i' <br /> Type 1Description I Length I Slope I Coeff Misc ; TT <br /> I'Sheet !Woods or forest with light 4 '127.00 3.10% 10.4000 1.55 31.35 1 <br /> 1I underbrush.: 0.40 ft j I ;in Amin <br /> I I ;Woods or forest with light 1173.00 ' 1.55 19.48 ii <br /> Sheet 18.90% j0.4000 i. j <br /> !underbrush.: 0.40 ,ft ! jrn !min I <br /> I !;----_ ---!Brushy ground with some trees --- . _-- --i ----o- r -----�--___----�---------_I <br /> j Shallow'Brushy 60) 149.00 ft 18.90 /° 0.0600 0.35 min ! <br /> � S Brushy ground with some trees 480.00 <br /> I eft ° I <br /> Shallow! 5.40 /° 0.0600 ,6.43 min <br /> IF <br /> i 1(n=0.060) j <br /> 'Brushy ground with some trees '204.00 o <br /> ; Shallow' 2.90 /° 0.0600! 3.73 min <br /> [(n=0.060) ft <br /> Brushy ground with some trees !140.00 ° ' <br /> I Shallow; 5.70 /° 0.0600 1.83 min <br /> I i(n=0.060) ft j i <br /> 63.17 <br /> Pervious TC I . <br /> [j j min ! <br /> I <br /> PACLAN D Job# 50175001 Page 8 <br />