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<br />..,...... .-.. <br />.1 J ;) '.! <br /> <br />. <br /> <br />. <br /> <br />These projects would eliminate approximately 25 percent <br />of the total annual projected salt load of 11.4 million tons by year <br />2000 at Hoover Dam. The total cost of these salinity control measures <br />would be about $330 million. Projects located in the Upper Basin <br />would cost approximately $23J million, and those in the Lower Basin <br />epproximately $150 million. About 7~ percent of the salt eliminated <br />would be from sources in the Upper Basin and the remainder would be <br />from sources in the Lower Basin be~leen Lee Ferry and Roover Dam. <br />Bith all projects completed, the reduction in salinity from projected <br />values would amount to about 3&0 p~m at Imperial Dam. <br /> <br />In a speech given to the Colorado r.iver ~vater Users' Association <br /> <br />on December ll:., 1970, Mr. David Clark, Director of the Fe.clfic South- <br /> <br />west Re~ion, Office of the ~nvironmental Protection Agency, reviewed <br />the salinity control projects for the Colorado River and concluded th~t <br />the projects would have a benefit-cost ratio of 1.6 to I, considering <br />only direct benefits to the year 1980, and the benefits would increase <br />in succeeding years. <br /> <br />Navaio Generatin~ Station <br /> <br />One recent action that will result in a salinity control project <br /> <br />is in connection with the Navajo Generating Station, the huge thermal- <br /> <br />electric power plant which will be located near Page, f.rizona. This <br /> <br /> <br />project is in the design stage with completion of the first unit <br /> <br /> <br />scheduled for 1974. The project includes diversion of over 30,000 <br /> <br />acre-feet of water per year from Lal:e PO~lell for use in cooling tO~lers <br />at the plant. In October 1970, the eugineerin~ consultants to the <br />silt participants in the joint venture recommended the return of highly <br /> <br />-13- <br />