Laserfiche WebLink
_�-- <br /> � , : <br /> CITY OF EVERETT PUBLIC�WORKS � <br /> � , DRAINAGE CALCULATION SUBMISSION FORM <br />� Date .3/13/96 <br /> PTojeCt lJame: Everett Housinq Authority - Main Buildin4 <br />, Project Location: Baker Avenue & 15th Street <br /> Submitted By: Trepanier �hqineerinq <br />' Drainage Basin: Combined Sewer -, Outsi.de Downtown . ' <br /> Pre-Development Design Storm (yr) : 10 year <br />� Post-Oevelopment Design Storn (yr): 10 pear. . <br /> Area of 5ite (ac) : 0.21 acres (9,190 sauare feet of additional <br /> ' • impervious) <br /> Existin9 Slope of Site (%): 1 .0� . <br /> � Existing Graund Cover <br />' k'oods/Forest (ac): • <br />, , Lawns/Landscaping (ac : 0.2� acres <br />� Earth/Gravel (ac) : ' <br /> . Impervious (ac): <br /> i <br /> Existing Run-Off (cfs) : 0.28 cfs/ac x 0.21 acres' = 0.06 cfs (Use 0.13 cfs/min <br />� <br /> Therefor� 0_13/0_21 = 0_f,9 efs/ac) . <br /> Proposed Ground Cover • ' •. <br /> • Lawns/Landscaping (ac) : <br /> Earth/Gravel (ac): <br /> Impervious (ac)!: 0.21 acres <br /> Detention;Storage Required (cf/ac) <br /> Lawns/Landscaping (cf/ac): <br /> Earth/Gravel (cf/ac): ' <br /> • Impervious (cf/ac) : 378 cf/ac <br /> . <br /> � . Total Oetention Storage Required <br /> . Lawns/Landscaping (cf): <br /> Earth/Gravel (cf): <br /> Impervious (cf): <br /> ' Total Storage Required c 79 cubic feet <br />