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/ <br /> CITY OF EVERETT PUBLIC WORKS <br /> DRAINAGE CALCULI�.TION SUBMISSION FORM <br /> Date J�oril 4 . 1994 <br /> � Pro ject Neme: "t'_"'"�e '^'r*"'pnts <br /> pro ject r�ocation: ''' � rnai no Road <br /> Submitted By: "" { �rin� <br /> Drainaqe Basin: Piaeon � ��k xe 2 <br /> Pre-Development Design Storm (yr) �—� <br /> Post-Development Desiqn Storm (yr1 : z5 <br /> Aroa of Site (nc) t <br /> Existing slope of site (�) : .3 <br /> � �4 /use 1041 <br /> Existing Ground Cover 5 <br /> Woods/Forest (na) . Z3 — <br /> Lawns/Lendscaping (ac) : N/� <br /> Earth/Gravel (a�1 � N�� <br /> Impervious (ec) : <br /> Existinq Run-off (cfs) : ( oo4f 51 + 12f 2311/ 73 c,04�1 cfs <br /> per acre <br /> , <br /> propoaed Ground Cover 1� _ <br /> Lawns/Landscapinq (ac) s N�� <br /> Earth/Gravel (cf/ac) : 6 <br /> Impervious (ec) : <br /> Detention Storage Required (cf/ac) <br /> � d�0 <br /> Lawns/Landscapinq (ac1 � N/A <br /> Earth/Gravel (cf/ac) : 6316 <br /> Impervious (ac) : <br /> Total Detention Storaga Required 1420 f 131 � 185 sf <br /> Lawns/Landscaping (s�) � N/A .�— <br /> Earth/Grnvel (cf/ac) : 6316 f 61 a '75U �f <br /> impervious (ea) c ,o,� „f <br /> Total Storage Required (cf) : <br /> 1�djusted for 1" orifice w/5' heed � 3710 cf <br /> (4762H) (See attached cala�s) <br />