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<br />portion of the Green Mountain Reservoir storage made available for the exchange. This is due to a <br />combined effect of the variation in the diversion requirement of Roberts Tunnel from year to year, <br />the limited conveyance capacities, and the minimum flow release requirements (assumed to be 60 <br />cfs in this Study) from Green Mountain Reservoir. The Unit Cost of Water in Table 5.5 is the average <br />Total Cost Per Year divided by the Exchange Project Yield. It provides a relative cost comparison of <br />an acre-foot of water among the Exchange Project alternatives. <br /> <br />PROJECT DEVELOPMENT <br />This report summarizes the results of a 21-month study which has provided reconnaissance- <br />level engineering and hydrology information on two conceptual projects: Joint-Use Reservoir and <br />the Green Mountain Exchange. The development schedule for each of the alternatives addressed in <br />this Study would require a series of additional steps including selection of preferred alternatives, <br />feasibility and site-specific environmental studies, regulatory compliance, financing, design and <br />construction and definition of institutional arrangements for project implementation. Neither the <br />Colorado River Water Conservation District nor the Denver Water Board has made any decision with <br />respect to the future of these projects. <br /> <br />...... <br /> <br />A minimum of six additional years from the decision to proceed would be a reasonable <br />projection of the time needed before any of the Joint-Use Reservoir projects would be completed. A <br />minimum of 14 years is a reasonable projection for any of the Green Mountain Exchange Project <br />alternatives. However, resolution of the various institutional constraints could substantially increase <br />the time required. Recognizing that this Study has covered only a limited number of the facets <br />involved in selection of projects for construction, no ranking or preference has been made. In <br />accordance with the scope of work, water yields and estimated costs for alternatives have been <br />derived and presented for consideration in the next level of implementation of these projects. <br /> <br />12 <br />