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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 DeGroot <br />February 10, 2000 <br />Page 3 <br /> <br />spillway and upstream of the rail line at many south tributary locations from the <br />foothills to upstream of Gross Reservoir. The large floodplains below Eldorado <br />Springs provide dynamic storage which is not well simulated by UDSWMM. <br />Under actual conditions, this storage would attenuate the 1 OO-year flood peaks <br />below the figures in this report for South Boulder Creek downstream of Gross <br />Reservoir. For this reason and others elaborated herein, we believe this hydrology <br />should be considered "subject to change" until subsequent master planning is <br />completed, efforts to formalize and sustain upstream storage are undertaken, and <br />other refinements pursued. <br /> <br />Please let us know if you have further questions. <br /> <br />Sincerely, <br /> <br />TAGGART ENGINEERING ASSOCIATES, INC. <br /> <br />Marsha L. Taylor, P.E. <br /> <br />IIC~ <br /> <br />William C. Taggart, P.E. <br /> <br /> <br />Dawn C. Gladwell, EIT <br /> <br />