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� <br /> . , , , , <br /> ' • - -�J `J <br /> CITY OF EVERETT PUBLIC WORKS <br /> DRAINAGE CALCIA.ATION SI�MISSION FORM <br /> Date 'ir�/Z/9� ! , <br /> Pmject Name: ToGO �iVD�ST�i�L BCOCo, <br /> Pro�ect Location: 1'�/f�T �AS/.1/O �D_• <br /> Submitted By: JD�L s . i m m E�M ps�l• <br /> Drainage Besin: /�y�WDFf� ///iLL <br /> Pre-Develapment Design Storm (yr): 2 _ <br /> Post-Development Design Storm (yr): Z� <br /> Area of site (ac): 3.98 �4� <br /> Existing Slope of Site (X): 5 � <br /> Fi <br /> Existing Gramd Cover Q,,,,,,(�? % <br /> Woods/Forest (ac): • <br /> Larms/Landscaping (ac : �,, �2, 90%, O.IO rrt{ <br /> Earth/Gravel (ac): 0.2L � "7'�0 0�48 ! • <br /> Impervious (ac): D. /� 3% 0.47 <br /> i <br /> Existing Run-0ff (cfs): 3.GZ(.Io)t 0.Z4C .%)+ o.�0(.47�= O.5$c�5 i <br /> per ecre p, /q.� CFS�— <br /> o, 58 c� To� . � <br /> Proposed Gramd Cover i <br /> Lawns/Landscaping (ac): 0,08 I <br /> Earth/Gravel (ac): i <br /> Impervious (ac): �, 1 �i i <br /> I <br /> Detentian Storape Required (cf/ac) i <br /> Larms/Landscaping (cf/ac): $ 2Q, � ; <br /> Eerth/Grevel (cf/ac): D I <br /> Impervious (cf/ac): f9 ' , <br /> T6te1 Detention Storage Required <br /> � LaNns/Landscaping (cf)t 7 <br /> Earth/Gravel (cf): <br /> Impervious (cf): 3 __ . <br /> total Storage Rpqu te c : �,�s g_ <br /> P�i°-Q� 49" .: I000tF ��.•. 24i8i r� b�s�> �2� 7YZU` � <br /> yo' = 64o�P I <br /> 72" ` 445�F ; <br /> I ' <br /> � ' <br /> . '; <br /> � . ...,_'' , <br />