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SEll1N1ENT POND DESIGN <br /> ( Project Name: EVERETT GATEWAY CENTER By P A.D. <br /> Project Number: 05008 Date 7/14/2005 _ <br /> DRAINAGE CRITERIA: City o�Everett <br /> RAINFALL METHOD: Sanla Darbara Unil Hydrograph (SBUH) <br /> Step 11 Reauired Sediment Pond Surface Area <br /> Tnbutary area= 2.75 ac <br /> p2= 0.50 cfs <br /> H=Storage depth= 2 ft <br /> Z= Sideslope= 3 fUft <br /> As=Req'd suAace area=Q2' 1250 sf/cis= 625 sf <br /> Step 21 Provided Sediment Trao Sur(ace Area <br /> Provided trap dimensions: width ft len Ih f� <br /> bottom= 10 18 <br /> water suriace= 22 30 AREN= 660 sf, OK! <br /> top= 28 36 <br /> �� <br /> GS^C�E;'r„c':;�Is.S[DIIJ�GNT Tf2AP ,'�14I2005,10�3�AM <br />