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ALTERNATIVE COMPARISONS Single reservoirs of this Study were analyzed for their ability to meet Joint-Use Reservoir requirements. These single reservoirs and combinations of reservoirs were also analyzed for their ability to supply the greater yields necessary to meet Replacement Reservoir requirements based upon the yield of Green Mountain Reservoir. A reservoir could initially serve Joint-Use Reservoir requirements and later, in combination with additional constructed reservoir(s) also serve to meet water exchange project requirements. Joint-Use Reservoir Proiect: Yields from Wolford Mountain A' and C, Red Mountain and Azure Reservoirs appear to be within range of the objective 30,000 af of annual yield for a Joint-Use Reservoir. Comparative unit costs of yield from Joint-Use Reservoirs are presented in Table S.4. Green Mountain Exchanae Proiect: For Replacement Reservoir alternatives, analyses were made of Wolcott Reservoir and combinations of reservoirs including Wolcott (Eagle) and Red Mountain, Wolcott (Eagle) and Azure, Red Mountain and Una, and Wolford Mountain A' and Una Reservoirs. Two of the reservoir combinations, Red Mountain with Una, and Wolford Mountain A' with Una, are shown on Table S.1 as being capable of fully replacing the 144,000 af yield of Green Mountain Reservoir. Other reservoirs and reservoir combinations would only partially replace Green Mountain Reservoir. In these cases, a portion of the capacity of Green Mountain Reservoir would continue to serve its original function. In order to compare alternatives in this study, it was assumed that the yield of Replacement Reservoir(s) could be exchanged for an equal quantity of yield from Green Mountain Reservoir, The actual quantities of exchange may differ from this Study depending upon the institutional arrangements between the interested parties. ,- r- 9