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Agenda Item 17 July 11-12,2007 Board meeting Page 2 00 acre-feet. We should note that additional study would be required to evaluate the impacts of water right administration, compact limitations, water transfers etc. Furthermore, the Upper Basin made depletion projects which were utilized by the federal Water and Power and Service for power rate studies. One set of those projects is contained in their August 1980 Projected Water Supply and Depletions Report. In the Water and Power Resources Service's Report, the detailed development plans for Tracts Ca and Cb were estimated to consume approximately 78,000 AF in support of a 400,000 bbl\day operation, exclusive of water for spin-off growth. This amounted to an estimated 9,750 AF per 50,000 bbl\day production. A value of80,000 AF\year has been carried in Colorado's future depletion calculations since that time. Estimated Uses in 2005: As part of the SWSI study, energy water needs were examined in the Yampa/White/Green basin. This topic was examined at three of the basin roundtable meetings. The focus of these discussions was on water needs for coal, power production, oil shale, and soda mining. Water use and needs data were obtained directly and by reference from the BBC Yampa River Basin Water Demands Study, which was completed as part of the Programmatic Biological Opinion for Endangered Species in the Yampa River. SWSI concluded that there would be si!:,'11ificant water needs for increased power production in the Craig and Hayden areas. No significant water needs were identified relative to soda production. For the basin as a whole, it was generally concluded that future municipal, domestic and the above needs have adequate water supplies in Stagecoach, Yamcolo, Elkhead Reservoir and the Enlargement of Elkhead Reservoir. However, some upper basin domestic shortages are likely in certain subbasins (i.e., Morrison Creek) and localized agricultural shortages will also occur. Discussions regarding oil shale development produced a variety of opinions and challenges. Some felt oil shale development was imminent while others were not certain whether signi fie ant development would occur. A number of factors were identified that made quantifying the demands difficult. These factors included: . Effects of international market for crude oil . Concerns over national security · Uncertainty regarding proprietary processing methods resulting in water use estimates from 2-5 barrels of water per barrel of oil produced from shale, and uncertainty regarding the amount of water needed for other methods of energy production. · Uncertainty regarding the rate of scale up from research and development, scale up confirmation, initial commercial production and production growth .. Uncertainty regarding the amount of produced water that might be expected and potentially utilized.