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003248 LOWER COLORADO REGION REPORT PSIAC MEETING. SEPTEMBER 9-10. 1981 ALBUQUERQUE, NEW MEXICO Investiqations in Progress, Feasibility Hoover Powerp1ant Modification. The project is located on the Colorado Ri ver on the Ari zona-Nevada state 1 i ne approxi ma te 1y 7 mil es northeas t of Boulder City, Nevada at Hoover Dam. The purpose of the feasibility investigation is to develop and evaluate alternative plans for modifying Hoover Powerp1ant. The proposed action is to increase the peaking capac- ity by 500 MW by constructing a new 500-MW surface powerp1ant bringing the total capacity to 2.300 MW. The feasibility report has been released to Congress and is undergoing administrative review. The draft EIS is expected to be filed in 1981. The existing power allottees have exoressed interest in providing funds for construction. Geothermal Resource Investigations. Studies were initiated in fiscal year 1972 in the Imperial Valley of California to determine the feasi- bility of the production of fresh water from the geothermal resource. Extensive studies identified the resource and advanced the technology for geothermal water and power production. However, it was determined that the East Mesa geothermal resource would not support a development for the production of water and a concluding report was prepared in fiscal year 1980. A special report on the Geothermal Resources of the Lower Colorado Region is scheduled in September 1981 which will identify other potential, but substantial investment will be required to determine the feasibil ity of power and water production. . Saline Water Use and Disposal Opportunities--Co10rado River Water Quality Improvement Program. Special studies are complete evaluating the conceot on the feasibility of collecting saline flows in the Colorado River Basin and providing them to industry for energy development (powerplant cooling and coal slurry transport). A special report is being prepared and is scheduled for completion in September 1981. Further study of the concept is justified. LaVerkin Springs Unit. Colorado River Salinity Control Project. Title II.. The project investigation did not produce any viable alternatives. A draft of a concluding report has been prepared and is under administrative revi ew. Palo Verde Irrigation District Unit. Colorado River Water Quality Improvement Program. The special report was released to the Congressional Delegation on August 6. Copies have also been distributed to interested Federal, state, and local agencies.