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<br />081~ <br /> <br />I. INTRODUCTION <br /> <br />" <br /> <br />The water availability conceptual design study was conductp.d <br />to evaluate and select an integrated water supply system <br />for the Naval Oil Shale Reserve No.1. In addition to pro- <br />viding a conceptual design, the study addressed environmental <br />considerations with respect to siting the emergency storage <br />reservoir, and developed cost estimates for dam construction, <br />pumping stations, and pipelines. <br /> <br />The Naval Oil Shale Reserve No.1 (NOSR-l) lies northwest of <br />the intersection of U.S. Highway 24 with State Routes 13 and <br />789 near the city of Rifle, Colorado. <br /> <br />Water to supply the processing needs of oil shale mining/ <br />retorting/upgrading facilities amounts to approximately <br />48,000 acre-feet per year (acre-ft/yri corresponding to <br />200,000 barrels per day (bbl/d) of raw shale oil. This <br />water must come principally from the Colorado River since <br />the plateau does not contain enough surface or underground <br />water to satisfy this requirement. Also, the NOSR-l does <br />not possess sufficiently senior water rights under Colorado <br />law to assure a year-around supply of water. For purposes <br />of this study, junior water rights, dated 1980, have been <br />assumed. <br /> <br />A previous study indicated that up to four dry months could <br /> <br />occur each year. The integrated water supply system therefore <br /> <br />reflects the inclusion of an emergency storage reservoir. <br /> <br />Other options not considered in this study exist for assuring <br />a year-round supply of water. These include purchase of more <br />senior water rights and the pipe transport of water from the <br />federally owned Ruedi Reservoir. This study was restricted to <br />considerations of water supplied from the Colorado River only. <br /> <br />I-I <br />