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,4,� <br />op <br />I <br />o everett <br />July 12, 1976 Pyvo���g �1 <br />A,�,� <br />i towar 1, Need109, :acn,n . ". rrT&n <br />201 Elliott Ave. t1. <br />Saittle, NA 90119 <br />rT, Drainage Plan for P.11.0. 0oth Street S.N, Everett <br />rentlenan, <br />The drainage plan an mlhmitted on Julv 11, 1970, proposed the construction <br />of a pondinq basin with storage capacity of not lass than 195,500 cubic feet <br />and a tventy-four (24) inch diameter C24P outflow PiP-- In addition, <br />provision in to he made for adequate overflow facilities to cater for <br />overtopping by flows in eycoan of the desicm conditions. <br />The discharge flow should not be allowed to ax,:ued 20 cubic feet per <br />second and should be controlled by an orifice opening at .ha entrance to <br />the twenty-four inch diameter CXP outlet culvert. An orifice opening of <br />lS inch diameter with a 5 ft. bend a),ove center of orifice will allow a <br />flow of 20 cubic feet per second. ^_9lo final design of the dam facility <br />way necessitate a variation in oriflcu situ if the liquid Bead is to be <br />var. e& . <br />,he drainage plan is apnrove(l on the hA nin of nrovidinq the facilities <br />outlined a),ove. <br />S sroly, <br />_ yd E. 11anninq, P.r". <br />City Engineer <br />LeA,Jo,is/S70 <br />ces nuildinq Departmont <br />