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<br />- - --:..... ------------------ - ~~---- <br /> <br />Project Caoital Costs ~ The preliminary cost studies show that the two major <br />construction items would be the dam and relocation of U.S. Highway 6. It is <br />anticipated that the capital cost for a Clear Creek project would be approximately <br />$400 million (1988 price level). Capital cost includes total construction cost <br />plus interest during construction. The dam would account for approximately two- <br />thi rds of the est imated project construct i on cost and the road re 1 ocat ion <br />approximately one-third. <br /> <br />""""' <br /> <br />Unit Cost of Firm Yield - The three highest yielding water supply scenarios <br />(shown in Table 1.2) could develop Clear Creek water at unit costs ranging from <br />$631 to $935 af/yr. These costs are generally competitive with the unit cost of <br />other firm water supplies which may be available to the Alliance members. The <br />unit cost of firm yield is calculated as the annual debt service of the project <br />plus annual operation and maintenance costs divided by the amount of firm yield. <br /> <br />, ; <br /> <br />Construction Schedule - The estimated construction period would be <br />approximately 5 years. Construction activities for the dam and the road <br />relocation would be expected to overlap by approximately 3 years. This overlap <br />would require routing traffic through the canyon along U.S. Highway 6 during dam <br />construction. <br /> <br />Conventional HydrODOWer - A conventional hydroelectric power plant with a <br />capacity of approximately 12 megawatts could be installed at the base of the <br />proposed dam in Clear Creek Canyon. However, project economic analysis has not <br />considered conventional hydropower in these preliminary studies. The decision <br />to include conventional hydropower as part of the project would depend upon the <br />value of power at the time of project construction. <br /> <br />Flood Control - A major reservoir on Clear Creek would reduce the risk of <br /> <br />,..... <br />flooding downstream of the reservoir. This flood protection would occur as a <br />natural consequence of the reservoir's attenuation of flood flows. Additional <br />flood protection could also be added to the project by reserving space within <br />the reservoir dedicated to water storage for flood control. This potential was <br />not evaluated in the present study. <br /> <br />6-3 <br />