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1.7 recreational values on the Fryingpan River (paragraph 10, OP) is made through a provision of minimum flows below the junction of the Fryingpan River and Rocky Fork Creek. Also, the lands and surface waters of Ruedi Reservoir are open for public recreation (paragraph 12, OP). In order to conduct a second round of water sales, Reclamation has prepared this Final Supplement to the Fryingpan-Arkansas Project's Environmental Statement which was submitted to the Council of Environmental Quality (CEQ) in 1975. A Draft Supplement was filed with the Environmental Protection Agency, October 6, 1983. This FSES addresses the environmental consequences associated with alternative operations of Ruedi Reservoir to meet competing water demands which include industrial, municipal development, recreation, wildlife, fisheries, and hydropower. This FSES also includes the effects of the Round I water sales from Ruedi concluded on May 13, 1982, for 7,850 AF. The reservoir has a firm marketable yield available for both Round I and Round II sales of 51,500 AF (July 1 to June 30) based on a hydrologic analysis covering the years 1948 to 1983. Requests for Ruedi water, as of August 1983, exceed 80,000 AF (Table 1.1). The vast majority of requests for Ruedi water was from oil shale interests. The Piceance basin in western Colorado contains large oil shale reserves. Development of the oil shale resource has historically occurred in boom and bust cycles, driven by conditions of the world oil market. While the current world oil market conditions have slowed the development of oil shale projects, energy companies continue to maintain and acquire oil shale resources and to pursue the development of the technology. By the year 2000 to 2010, it is reasonable to assume as a basis for projecting West Slope water demand that economic conditions might foster the development of an oil shale industry. A number of studies have been performed estimating the water needs of the oil shale industry including "An Assessment of Oil Shale Technologies," Office of Technology Assessment 1980; and "The Nation's Water Resources 1975-2000, Upper Colorado River Region," U. S. Water Resources Council. Estimates of oil shale water use vary from 100,000 acre-feet to 400,000 acre-feet of additional water depletions from the Colorado River Basin. The water demand could be met through a number of different sources: marketing of water from Ruedi Reservoir, development of water rights held by the energy companies, purchase of agricultural rights, groundwater, and reservoirs such as the proposed Rock Creek/Muddy Creek reservoir project.