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<br />e <br /> <br />e <br /> <br />e <br /> <br />OUTLET PIPE: The outlet pipe at the dam would be extended about <br />135 feet through the new embankment. No other modifications are <br />anticipated but necessary repairs to the existing outlet pipe and <br />gate would be made concurrently with the enlargement. <br /> <br />A 4 foot diameter, 350 foot long outlet pipe would be installed on <br />the dike to allow releases to the Cattlemen's Ditch on the south <br />side of the reservoir. This is needed to re-operate the existing <br />ditch water to optimize the water supply. <br /> <br />SPILLWAY: The spillway for the enlargement would be constructed at <br />the same location as the existing spillway, with the crest raised <br />to elevation 7330 feet; 5 feet below the dam crest. The PRC report <br />includes a conceptual design of the spillway based on passing the <br />probable maximum precipitation. <br /> <br />RELATED STRUCTURES: The PRC report included several related <br />structures necessary to collect and release water for <br />implementation of the plan, which include: <br /> <br />Black Mesa Conduit <br />Conveyance System <br />Drop of Cattleman's Ditch <br />Diversion Structure on Fruitland Mesa Ditch <br />Gould Canal <br />Cattleman's Ditch below Gould (pipe or relocate) <br />Additional Conveyance Capacity <br /> <br />COST ESTIMATE <br /> <br />The estimated cost to reconstruct the dam is shown in Table 2, <br />summarized from the PRC report. The costs are indexed up by 30%, <br />approximately 2.5% per year from 1980. <br /> <br />PRC used an amount of 25% for contingencies and 10% for <br />engineering and administration. <br /> <br />Gould Dam <br /> <br />6 <br />