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K <br /> � -rl, <br /> CITY OF EVERETT - DRAINAGL PLAN SUBMISSION <br /> NAME OF APPLICANT:- Peter K. Musland <br /> Box 581, Edmonds, Wa. 98020 <br /> ADDRESS OF APPLICANT:- <br /> SUBMITTED BY:- Lovell-Sauerland & Assoc. , Inc./Don Westlin <br /> P;.jPLRTY LOCATION:- See attached legal description. <br /> ZONING OF SITE:- M-M AREA OF SITE:- 2.64 Acres <br /> AREA OF CONTRIBUTING CATCHMENT:- 0.88 Acres offsite <br /> RUNOFF COEFFICIENT:- <br /> PRE-DEVELOPMENT 0. 15 <br /> POST DEVELOPMENT 0.85 <br /> DESIGN STORM:- PRE-DEVELOPMENT FREQUENCY 1 in 10 years <br /> POST DEVELOPMENT FREQUENCY 1 in 25 years <br /> } DURATION 20 min. <br /> INTENSITY 1.6 in./hr. <br /> i <br /> '. TOTAL DESIGN RUNOFF FROM SITE:- <br /> BEFORE DEVELOPMENT I c, feet <br /> AFTER DEVELOPMENT �30� 7� feet <br /> RUNOFF DIFFERENTIAL:- <br /> 2891 c. feet <br /> ADDITIONAL STORAGE DUE TO LAG TIME:- 266 c. feet <br /> DETENTION STORAGE PROPOSED:- 3157 c. feet <br /> ORIFICE OFENING:- DIAMETER 5-3/8 inches R �7 <br /> DISCHARGE 1.77 cubic feet per second p L S (I <br /> HEAD 5.21 feet I; L <br /> I � <br /> UUTLET PIPE:- ir; 1979 <br /> DIAMETL 12 in•:hes CMP <br /> SLOPE 0.01 Leet/rout ........ <br /> CAPACITY 2.2 cubic feet per second " ')r EVLRETT <br /> t'ria.;t 1Pnrla. <br /> [)Opt. <br /> 01G U 0 APPLICANT:- DATE:- <br /> q21 <br /> DEPARTMENT OF PUBLIC WORKS APPROVAL PLAN NO. <br /> GN -31TE DETENTION REQUIREMENTS:- c :'.•.a <br /> 1,..AINAGE PLAN APPROVED BY: <br />