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«�� <br /> i <br /> a <br /> t, _ <br /> � "�y� <br /> �O �1x <br /> Cy, H <br /> t" yxy � . <br /> HXH <br /> K O . . <br /> H 7tl <br /> p� � � � � �i !��,. .: ,_� . �.. �. <br /> �i o � �-�'l JUL 2 3 1991 ��. <br /> ye CITY OF EVERETT PUBLIC WORKS ___,., _... .......... i <br /> � �' t� DRRINAGE CALCULATION Sl�8MIS5I0N FORM �; ;'`( pF [�'�RETT li <br /> �� �0,� �.Ptl,. Pannit Counter <br /> zH � Date (—/8 -9/ . i <br /> � H y Project Name: fr�A�PDESo�✓ Co�-iMo,./5 � <br /> gty� �Project Location: /i'A.QJE.So� /1D � 65Th � I <br /> �j� � Submitted ey: <br /> zyv� � <br /> HOv� <br /> Drainage Basin: GPPE� E�O ME�2RiL F'R�niG <br /> i I <br /> "3"���-` Pre-Development Design Storm (yr) : /O <br />��,�„ <br /> Post-Development Design Storm (yr): Z� ___ � <br /> - i <br /> Area of Site (ac): O• (0 887 <br /> Existing Slope of Site (%): q. ¢ _ <br /> � <br />�'i I <br /> � Existing Ground Cover � � <br /> � Woods/Forest (ac): O. �88'J <br /> I <br /> �4 Lawns/Landscaping (a�—o _ <br /> Earth/Gravel (ac) : O <br /> Impzrvious (ac): o lq�, �� <br /> 1 �__� _ , <br /> , __� <br /> Existing Run-Off (cfs) : 0. 20� CFS�iaZ .t •�837/iv o D./4i9CF5 <br /> per acre <br /> I `�� Proposed Ground Cover <br /> Lawns/Landscaping (ac): o. Z88 <br /> Earth/Gravei (ac): —o� i <br /> � Impervious (ac): 0.40 <br /> � r',� - <br /> Detention Storage Required (cf/ac) t� � � <br /> Lawns/Landscaping (cf/ac): _�90 ` a� ' <br /> ���.►� Earth/Gravel (cf/ac): --o — I <br /> ' Impervious (cf/ac) : Z9�b � �C����' <br /> � i <br /> I e.I�t � � � <br /> Total Detention Storage Required Z . � <br /> �. Lawns/Landscaping (cf)i 4 0� � � � <br /> - Earth/Gravel (cf): o ., � <br /> Impervious (cf): 2 o s I - � � ��� � <br /> Total Storage ftequired c F : Z 4 S� _ __ �� I , �° ,� <br /> I <br /> ' I <br /> . , ._ �;�...i I . <br /> , -� �.;i "/''� � ' . '�,�J/`� . � ' <br /> � , .� <br />