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.. _:r-.����\\4 <br /> yp � r`�T� G. H,�k��y <br /> . tC y �C�- ,�4�, � �^�ip�O�'� <br /> ti H f��ll � �h <br /> y H ��i � : *� CITY OF EVERETT PUBLiC WORKS <br /> � ' ORAINAGE CALCULATION SUB�dI55I0N FORId <br /> � � co : ��: <br /> � � o � � .�;,i51EF.;:.`C\,�f <br /> .� x ~ � � S���p�F'�'�?F-e 3/27/91 <br /> � O . . ` �\4\�'s��� ~ <br /> y � <br /> �.�.�� PTOjeCt N;me: Claremont VillaPe ShoDPinq Center (�orth Site) <br /> °z � o <br /> H '� R PrOjeCt LoCation: 47XA EvetQreen W3y <br /> � y �� w ' SU17mltt2d By: pAC-TECH EnRineerin�, Inc. <br /> N <br /> O N <br /> � � N � Drainage Ba51�: 36th Str�et Combined Sewers <br /> N <br /> Pre-Development Desian Storm (yr) : 10 Year <br /> � Post:-Development Desion Storm (yr): 10 Year _ <br /> Area of Site (ac): 1.46 ncre <br /> Existing Slope of Site (�): * 8.17Z <br /> ' Existing Grcund Cover '`* <br /> ' Woods/Forest (ac): 1.08 :.cre <br /> Lawns/Landscapino (a�— <br /> I���.'a Earth/Gravel (ac): .38 Acre <br /> �� Impezvious (ac): <br /> i 's� � Existinq Run-Off (cfs): .44 CFS <br /> �_+ per acre <br /> i <br /> Proposed 6round Cover <br /> �, Lawns/Landscaping (a�): .5o ncre <br /> I �� Earth/Gravel (ac): <br /> Impeivious (ac): .96 Acre <br /> ,_� Detention Storage Required (cf/ac) N/A <br /> Lawns/Landscapin� (cf/ac): <br /> Ezrth/Gravel (cf/ac): <br /> , Impervious (cf/ac) : _ 1109 CF/AC <br /> �` ' — <br /> � , Total Detention Storage Required <br /> Lawns/Landscaping (cf): N/n <br /> �����. Earth/Gravel �cf): _ <br /> Impervious (cf): 1619 cF <br /> - Total Storage Requiretl cf : 16L9 CP <br /> �j <br /> * F*eighted Average (.5142 AC @ 14Z & .9458 AC @ 57,) <br /> ** Prior to present cleared condieions - based on 1985 topographic surcey <br /> by Horton Dennis d Associates, Job No. 5514.0. • <br />