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<br />I <br />I <br />I <br />I <br />I <br />II <br />I <br />I <br />I I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />February 15, 1974 <br /> <br />Mr. L. Scott Tucker <br />Executive Director <br />Urban Drainage and <br />Flood Control District <br />181 East 56th Avenue <br />Denver, Colorado 80216 <br /> <br />Our File: <br /> <br />1132/1 <br />DG 223/74 <br /> <br />Subject: <br /> <br />Niver Creek Drainage <br />Study - Phase B Report <br /> <br />Dear Mr. Tucker: <br /> <br />We are pleased to present the Phase B repo It of the Niver Creek Drainage <br />Study, prepared for the District under the terms of our contract dated November 6, <br />1972. This report is complementary to the Phase A report, transmitted to you on <br />July 11, 1973, ond should be used in conjunction with that report. <br /> <br />The purposes of Phase B of this study are to: <br /> <br />1. Prepare final hydrology <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />, <br /> <br />I <br /> <br />, <br /> <br />I <br /> <br />, <br />I <br />I <br /> <br />In the Phase A report, We prepared tabulations of the maximum flows (tt each <br />design point for present and future conditions for each design frequency. In thi~ re- <br />port, we have completed the final hydrology for preliminary designs by preparil~ <br />hydrographs of the l00-year flood at each of the 16 design points; these hydrographs <br />are shown on Plates 11-2, 11-3 and 11-4. <br /> <br />2. <br /> <br />Prepare layouts and preliminary <br />designs of Alternative C, which <br />was recommended for implementa- <br />tion in the Phase A report. <br /> <br />3. <br /> <br />Prepare plan ond profile drawings <br />of the prelimi nary designs. <br /> <br />4. <br /> <br />Prepare an estimate of the cost of <br />constructing Alternative C. <br /> <br />Hydrology <br />