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UPPER BASIN DEPLETIONS 33 by 2010. Part of this increase could result from a proposed fertilizer plant under construction by Chevron. Chevron has signed a contract with . the State of Wyoming to purchase water from the State's allocation in Fontenelle Reservoir or from the Big Sandy River Unit for use in a phosphate fertilizer plant. A slurry pipeline will carry phosphate ore from the mining area near Vernal, Utah, to the plant located near Rock Springs where the slurry water will be used as process water. Coal Gasification-The Wyoming State Engineer has estimated that by the year 2000, the coal gasification industry will deplete about 19,000 acre-feet yearly and 50,000 acre-feet by 2010. Oil Shale-Predictions on the future development of the oil shale industry always involve a high degree of uncertainty. The Wyoming State Engineer has estimated a depletion by this use of about 3,500 acre-feet in the year 2000 and 10,000 acre-feet by 2010. Projections of industrial uses beyond the year 2000 are largely arbitrary and reflect a growing use until the year 2010. No attempt has been made to identify individual industrial uses. New Mexico Adjusted Comprehensive Framework Study Several water uses listed in table 3 were included in the Comprehensive Framework Study. The Comprehensive Framework Study values in table 3 were adjusted by subtracting out the following values to avoid double accounting: Navajo Reservoir evaporation, 31,000 acre-feet; Hammond Project irrigation, 10,000 acre-feet; and Four Comers Powerplant, 15,000 acre-feet. Miscellaneous Additional Depletions These are depletions that have come into being since the Comprehensive Framework Study estimates were prepared. These include 5,000 acre-feet of private rights developed for municipal and industrial purposes. Values shown were provided by the New Mexico Interstate Stream Commission. Navajo Reservoir Evaporation Reservoir evaporation is based upon a Colorado River Storage Project study made in 1973. Animas-La Plata Project (Colorado-New Mexico) Reclamation estimates a depletion level of 10,000 acre-feet by 2000 and 34,000 acre-feet by 2010. See the discussion of the Animas-La Plata Project in the Colorado section. San Juan-Chama Project The San Juan-Chama Project was authorized by Public Law 87-483. Transbasin diversions began in 1971. The May 1957 Supplemental Project Report indicates that diversions are expected to average about 110,000 acre-feet a year, although more recent hydrologic studies performed by the Southwest Regional Office indicate that the long-term average annual yield may be closer to 104,000 acre-feet. Historical (1971-83) average diversion has been 99,640 acre-feet a year. For purposes of this report 110,000 acre-feet have been selected as the level of existing and future average depletions. Navajo Indian Irrigation Project Various estimates for projected agricultural use depletions have been prepared, including the studies for the all-sprinkler irrigation system for the Navajo Indian Irrigation Project prepared by the Southwest Region of the Bureau of Reclamation. This study estimated agricultural consumptive use of 226,000 acre-feet. Several other estimates have been made, and a 5-year field study was made to determine actual consumptive use on the project. Technical estimates reported by the Secretary of the Department of th,e Interior Report, Economic Study, May 1980, are 254,000 acre-feet for agricultural depletions.