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<br />w <br />w <br />00 <br />c..., <br /> <br />$ millions <br /> <br />For a total reduction of 1.2 million tons <br />of salts annually by agricultural <br />Source control and Paradox Valley Unit <br /> <br />$ 690 to 770 <br /> <br />For d total reduction of 1.6 million tons <br />of salts annually by other means (desalt- <br />ing. evaporation, energy uses, etc.) <br /> <br />832 to 3,200 <br />$1,522 to 3,970 <br /> <br />Status of Investigations <br /> <br />Units authorized for construction under Title II of Public law 93-320. <br />the ColoradO River Bas;n Salinity Control Act, are Paradox Valley Unit <br />and Grand Valley Unit, Colorado; Crystal Geyser Unit. Utah; and Las Vegas <br />Wash UnH, Nevada. Other planning units are discussed in the following <br />order: <br /> <br />Irrigation sources - <br />Colorado River Indian Reservation Unit, Arizona <br />Lower Gunnison Basin Unit. Colorado <br />Uinta Basin Unit, Utah <br />McElmo Creek Unit, Colorado 1/ <br />Palo Verde Irrigation District Unit, California <br /> <br />Point sources - <br />LaVerkin Springs Unit, Utah <br />Lower Virgin River Unit, Nevada-Arizona <br />GlenwoOd~Dotsero Springs Unit, Colorado <br />Meeker Dome Unit, Colorado <br /> <br />Diffuse sources - <br />Big Sandy River Unit. Wyoming <br />Price-San Rafael Rivers Unit. Utah <br />Dirty Devil River Unit, Utah <br /> <br />Of the 12 units listed above. 10 (excluding Colorado River Indian Reserva- <br />tion Unit and Palo Verde Irrigation District) were approved for feasibility <br />study by Public Law 96-375 in October 1980. Other studies discussed <br />include Blue Springs Unit, Saline Water Use and Disposal Opportunities <br />Unit, and the Aquatrain Project. <br /> <br />Paradox Valley Unit, Colorado <br /> <br />Paradox Valley contributes about 205,000 tons of salt per year to the <br />Dolores River in southwestern Colorado. The control project would reduce <br /> <br />1/ Listed as a diffuse source in Public Law 93-320. <br /> <br />xii i <br />