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<br />I <br /> <br />.. <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />Ie <br /> <br />I <br /> <br />I <br /> <br />I <br />I <br /> <br />! I <br /> <br />I <br /> <br />I <br />(' <br /> <br />I <br /> <br />B. <br /> <br />Alternative Evaluation: <br /> <br />The objective is to narrow the alternatives to one preferred choice. <br /> <br />1) Route Selection <br /> <br /> <br />Route selection for the pipeline alternatives will begin by reviewing <br /> <br />existing information in the files of Western Engineers, Inc., the State Highway <br /> <br /> <br />Department, and the District. Ground surveys will be initiated to establish <br /> <br /> <br />control for aerial mapping of areas not previously mapped by the State Highway <br /> <br /> <br />Department. A preliminary route will be selected based on field and aerial <br /> <br />observations and input from the District. <br /> <br />2) Right-Of-Way Required <br /> <br /> <br />Right-of-way requirements will be investigated through the use of maps from <br /> <br /> <br />the Mesa County Assessors Office. Public right-of-way will be maximized. The <br /> <br /> <br />construction schedule for rebuilding Highway 65 and 330 will be obtained from <br /> <br /> <br />the State Highway Department along with design criteria. Adjustments will be <br /> <br />made to allow inclusion of the pipeline in the road project. Right-of-way <br /> <br /> <br />requirements for pump stations and appurtenances will be examined. <br /> <br />3) Geologic Map <br /> <br /> <br />A geologic map of the pipeline routes will be developed from the aerial <br /> <br /> <br />photographs, existing literature, State Highway Department studies, and field <br /> <br /> <br />investigations. A feasibility level geotechnical investigation will be <br /> <br /> <br />performed. This will be limited to identifying hazards, field sampling as <br /> <br /> <br />needed to confirm hazards or soil classifications, and preliminary stability <br /> <br /> <br />analyses at critical areas, as identified from aerial photographs or field <br /> <br /> <br />observations, along the route. Based on the results of this study, the route <br /> <br />will be adjusted accordingly. Areas that will present special construction <br /> <br /> <br />problems will be identified. The end product will be a topographic and geologic <br /> <br /> <br />map with the pipeline route plotted on it. <br /> <br />4) Preliminary Cost Estimates <br /> <br /> <br />Preliminary cost estimates will be prepared for all alternatives utilizing <br /> <br /> <br />recent bids and estimating cost quotes from local suppliers. An estimate of <br /> <br /> <br />treatment cost for Colorado River water will be made based on past experience of <br /> <br /> <br />the District and the experience of the Clifton Water District. <br /> <br />