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1'4 �� . � � 1 = 1 �- � 1 � � `�i =. �. n _ �'i �� _, r� �_� L �'� Y. G F.: 1�+ 1 !'i I_ _ . _ _ � . <br /> • � n�/ <br /> ' . i <br /> t��� Fv� <br /> �� ��'. , � .�. <br /> .j� �-,°; ,�;� <br /> :ITY OF EVERETT PUBLIC WORKS <br /> DRAINAGE CALCULATION SUBMISSION FORM <br /> �ate 11/21/89 <br /> Pro,jeCt Name; G & M 7nvestments <br /> PTO,jBCt LOcdtiOn; Everett � <br /> Suhmitted By: Br.1ma 6 Holmberg, Inc. J�,c/ To�e��vcc- ) <br /> � <br /> Drainage Basin: 36th Street Combined (outside downtorm) <br /> Pre—Development Design Storm (yr) : 10 <br /> Post-Developm=nt Design Storm (yr); lo <br /> Area o` Site (ac) : 2.8 acres �~ <br /> Existing Slope o` Site (�): -1� • :�� <br /> Existing Grountl Ccver <br /> wootls/Porest (ac): z.o <br /> Lawns/Lar.dscaping (ac : - <br /> Earth/Gravel (ac;: - "—' '-- <br /> Impervious (ac): - <br /> _xist±ng Run-Off (cfs): 0,27 <br /> �er acse <br /> Proposed Ground Cover <br /> Lawns/Landscaping (ac); 0.5 <br /> Earth/Gravel (ac): <br /> Impervicus (ac) : "` . <br /> Detention Storage Requi:ed (cf/ac) � <br /> Lawns/Landscaping (cf/ac) : _�p <br /> earth/Gravel (cf/ac): <br /> Impervious (cf/2c) : � <br /> 7ota1 Detention Storage Required �� <br /> Lawns/Landscaping (cf); gs- <br /> Earth/Gravel (cf); <br /> 3mpervious (cf): L2�3 t. <br /> TotaZ Storage Requiretl c : <br /> z S c �' <br /> .. <br /> oNn/ U.i.=O .C27O� iAd�� G <br /> , v //!�✓<' a'sF_n .27. <br /> SHo��t <br /> 1. �.,`p O �� ���,��,C�i i����a <br /> E ` <br /> /� <br /> / ° • c_� <br /> �J ,��/.�'� '�� <br />