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<br />0593 <br /> <br />allocate waters to the various states based upon consumptive uses. <br /> <br />In 1954 the Denver Research Institute estimated that a <br /> <br />one million barrel a day industry would require a consumptive use <br /> <br />of about 145,000 acre-feet of water annually, <br /> <br />The most recent published estimate is contained in the <br /> <br />"Final Environmental Statement for the Prototype Oil Shale Leasing <br /> <br />Program." issued by the Department of the Interior in 1973, On the <br /> <br />same production estimates as contained in the earlier studies. the <br /> <br />Department of the Interior increases the average consumptive use of <br /> <br />water to an estimated 155,000 acre-feet per year. <br /> <br />The Colony Development Operation, a consortium of various <br /> <br />companies, expects to initiate construction on a 50,000 barrel per <br /> <br />day plant later this year in western Colorado. Average daily pro- <br /> <br />duction from this plant is estimated at 46.000 barrels, with a daily <br /> <br />water consumption of 22 acre-feet. On the basis of a million barrels <br /> <br />per day, the water consumption would be about 175,000 acre-feet per <br /> <br />year, This does not include associated municipal and industrial <br /> <br />requirements. Obviously, the proposed Colony operation would not <br /> <br />be identical with all other oil shale operations, Nevertheless. the <br /> <br />Colony operation is the only one for which we have specific infor- <br /> <br />mation at this time. <br /> <br />A summary of the various estimates is as follows: <br /> <br />Cameron and Jones in 1959 - 130,000 acre-feet <br /> <br />-2- <br />