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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />Mr. Bill Stanton <br /> <br />2 <br /> <br />November 4, 1986 <br /> <br />discharge may be confined within the freeboard of a 10-year channel, <br />and a residual . fl oodpl ai n del i neated wi thi n areas adjacent to the <br />drai nageway (s l. <br /> <br />Therefore, our recommendation woul d be to use the di scharges as <br />predicted by the SCS model. This will allow SLA to generate a <br />hydrograph at key design points, for routing by the Storm Water <br />Management Model (SWMM). In the SWMM modeling, a 2-hour storm pattern <br />is suggested due to the size of the area tributary to and \~ithin the <br />Town's 1 imi ts. I bel i eve that thi s wi 11 1 ead to a conservative esti- <br />mati on of drainageway improvements. <br /> <br />Please let us know if we can provide any further information. <br /> <br />Si ncerely , <br /> <br />SIMONS, LI & ASSOCIATES, INC. <br /> <br />Ibd dJ~ /vdm:lrew J. e~ <br /> <br />Richard N. Wray, P.E. <br />Manager, Rocky Mountain Region <br /> <br />RNW Inns <br />LD87.1/1104RNW2 <br /> <br />Enclosure <br />