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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />3682 <br /> <br />DIRTY DEVIL UNIT - UTAH <br /> <br />The Dirty Devil River is located in south central Utah and <br />has a drainage area of about 4,200 square miles. The Dirty <br />Devil River is formed by the confluence of the Fremont River <br />and Muddy Creek. <br /> <br />The irrigation of alluvial soils derived from shales is <br />the main contributor of salinity in the basin. The annual salt <br />load of the Dirty Devil River is estimated at 200,000 tons. The <br />estimated amount of salt that could be removed is 80,000 tons <br />which would reduce the salinity concentration at Imperial Dam <br />by about 5 mg/L. <br /> <br />Various investigations and studies have been conducted <br />since 1974. In March 1981, a work statement was prepared. <br />Shortly thereafter, a literature search regarding all aspects <br />of the unit began and data collection continued. The feasi- <br />bility report and environmental impact statement is due for <br />completion in 1985. <br /> <br />(updated 11/24/81) <br /> <br />DS:cs <br /> <br />-15- <br />