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<br />CONVEYANCE SYSTEM <br />The conveyance system is the pumpback element of the Green Mountain Exchange Project. <br />It is a pump and pipeline system that would pump water from Green Mountain Reservoir to Dillon <br />Reservoir. Both reservoirs are located on the Blue River, a tributary to the Colorado River. Green <br />Mountain Reservoir is located 26 miles downstream of Dillon Reservoir. The difference in water <br />surface elevation between the two reservoirs is 1070 feet, The pipe\ine route would have an overall <br />length of 140,900 feet and would follow the highway right-of-way where practical. Three pump <br />stations would be required. <br /> <br />Two conveyance capacities have been studied: 8000 af per month and 12,000 af per month. <br />These represent a range of the options available. To formulate Green Mountain Exchange Project <br />alternatives in this Study, the estimated cost of the 8000 af per month conveyance system was <br />combined with the lower capacity Replacement Reservoir(s) and the 12,000 af per month system <br />was combined with the larger capacity Replacement Reservoir(s). <br /> <br />COST ESTIMATES <br /> <br />From the preliminary design drawings, reconnaissance-level estimates of construction <br />quantities and unit construction prices have been made. Construction quantities, prices and <br />allowances have been combined to obtain an estimated total construction cost. Costs are indexed <br />to January 1986. Future inflation is not included, To determine the funding necessary to complete <br />the project, additional elements of project administration and financing costs have been added to <br />obtain the total investment cost. <br /> <br />,-. <br /> <br />Comparison of alternative reservoirs and combinations of reservoirs for this Study is based <br />on estimates of debt service and average annual operating costs. The costs are comprised of the <br />yearly principal and interest payment (debt service) on assumed 30-year, 8 percent financing of the <br />total investment cost and the estimated average annual cost of electrical pumping power, operating <br />personnel, maintenance and repair costs. No price escalation was incorporated. No separate <br />allowance was included for environmental mitigation. A summary of yearly debt service and average <br />annual operating costs is presented in Table S.3. The relative costs among alternatives have been <br />based on this average total cost per year. <br /> <br />,-. <br /> <br />7 <br />