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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 />Chapter V - Evaluation of Alternatives <br /> <br />this type of construction, mob/demob typically ranges from 5 to 15 percent of the total <br />construction cost. Ten (10) percent was assumed for this cost estimate. <br /> <br />. Any embankment materials removed from the existing embankment can be reused and therefore <br />no importing of embankment materials will be necessary. <br /> <br />. There are not any underground conditions that would inhibit the use of microtunneling <br />technology, such as large boulders or old concrete structures. This is not believed to be an issue, <br />however, a better understanding of the subsurface conditions will be gained in the design phase. <br /> <br />The probable construction costs, with 20 percent contingencies, for the proposed alternatives <br />and variations for each outlet are summarized in Table V-I, below. The cost estimates are presented <br />in Tables V -2 through V-4. <br /> <br />Table V-I <br />Summary of Probable Construction Costs (rounded) <br />Configuration Cost <br />Alternativel $1,204,000 <br />Alternative 2 $1,218,000 <br />Alternative 3 $1,135,200 <br /> <br />Impacts with respect to the man-made environment and the natural environment, and the <br />existing social structure are equal for all three of the alternatives. All alternatives can be constructed <br />with standard construction practices and are technically feasible. The main difference is the <br />alternatives allow the Company some flexibility regarding cost and disturbance of surrounding <br /> <br />areas. <br /> <br />Boyd Lake Dam Outlet System Feasibility Study <br /> <br />20 <br /> <br />BDVLE <br />