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. <br /> , CITY OF' EVERETT PUBLIC WORKS <br /> DRAINAGE CALCULATION SUBMISSION FORM <br /> Date q-��-g� <br /> PioJeCt Name: Proposed 6-Unit Apart�nent Building <br /> � Pro,ject Locatio�: 1617 Chestnut street, LWerett, Pm <br /> Submitted By': Cornelis D. Vanden F3ide, P.E. <br /> ; <br /> j Drainage Basin: ��ined Sewer Outside Downtown <br /> Pre-Development Design Storm (yr) : 1G <br /> , <br /> , Post-Development Design Starm (yr): l0 _ , � <br /> Area of Site (ac): 0.21 I A� <br /> „ <br /> Cxisting Slope oP Site (%): _ 2 u <br /> ; Existing Ground Cover 1,` <br /> Woods/Forest (ac): , <br /> Lawns/Landscaping (ac : n=ig �>,;i �y/•�. ! <br /> Earth/Gravel (ac): --- <br /> ' Impervious (ac): 0.03 /.{ �� /-:- � <br /> � / VfL y <br /> Existing Run-Off (cfs): _(0 asn , / U. `l 5�1 �={�c, '- �;�,-,.,%- . � <br /> per acre +. <br /> � l.�is �5 0.09�`� ( � <br /> Proposed Ground Cover �+�� . ��� "'F" r` ` r ,- "� �� ^^ j ��:�nc. <br /> Lawns/Landscaping (ac): n.� -� • <br /> Earth/Gravel (ac): -�•----- ' <br /> Impervious (ac): _r,ra::c__ .,/•�,�.r GCon = 0, l3 '' �� <br /> Detention Storage Required (cf/ac) <br /> Lawns/Landscaping (cf/ac): lo6o N� <br /> Earth/Gravel (cf/ac): ------- ' <br /> Impervious (cf/� :): F5�5 Ic! � <br /> Total Detention Storage Req��ired ���� ��� �, �.;_5� �c�-- ��' <br /> Lawns/Landscaping (cf): �55 <br /> Earth/Gravel (cf): i�.: c:r <br /> Impervious (cf): <br /> Total Storage Requ red c 576 <br /> I <br /> /l�/.� C �- � �i r:. ,G� , c �`. / `/ / ,_r .,�,<. <br /> r 1 �/ <br /> i / r /�,-.:I�: \/' � '- / ' � <br /> � r r <br /> r -�C<.:/.. �,,,. , ,� �/n oFT. �' fn , �i !� ,,;,�"�,; <br /> i! � �f -- -- , <br /> i <br />