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Salinity Control ~ LIIW19 canalS I<.H.!tJS IliJlrmul ill,ner:IISOlJl ollfflqation water Progress is continuing on three ot the four autl10rlzed units under the Salinity Control Project (Paradox, Grand Valley, Las Vegas Wash) The accomplishments in Fiscal Year 1984 are as follows Units Authorized For Construction Paradox Valley Unit: Deep well injection stili appears the most cost-ettective solu- tion for disposal ot collected brines, Contract work is underway to identily a new injection well site in a sl1allower receiving lormalion with the objective 01 drrlllng and testing a well Two independent contracts were selected lor geophysical data interpretation Theil task is to Identity the best location for a lest well trom the geophysical data that Reclamation has obtained, A contractor has also been selected 10 design and over- see construction of the test injection well, The current deep well site selection pro- cess has delayed the well drilling contract award, A potential Injection well sile loca- tion has been selected and property pur- chased for It. Grand Valley Unit: Data collectron lor the Stage Two area Is continUing DeSign data collection is under- Alkali Slowly enCrOi1chinq c] fiH!Tlers alfallil fi('ld way on the West End Government Highline Canal and Laterals, the first facilities sched- uled for construction under Stage Two, The recommended plan includes piping laterals and rnembrane lining the West End, Middle Portion, and East End of the Government Highllne Canal, Lining of the middle and east portions of the Government Highline Canal would be deferred until needed to meet salinity goals, Completion of the Draft Environmental Impact State- ment is scheduled for the fall of 1985, Las Vegas Wash Unit: A contract was awarded to construct the 3,5-mile Pittman bypass pipeline with the completion date set for November 28, 1984, The curtailment ot seepage from the un- lined ditches is expected to cause a rapid drop in ground water levels in the Pittman area, resulting in reduced loading of 8,000 tons per year to Las Vegas Wash, Monitor- ing of the resulting ground water changes is expected to continue through Fiscal Year 1987 when an assessment will be made of the results of the Pittman Verrfication Pro- gram, Another strategy to further reduce salinity ,c; f'i ,,' ;'0,'(1., .~ ~{~-~' ;:'$",' ',,~ "';'''';-' ">T:,'. loading is using ground water barriers in other areas of the Wash, Continued close coordination with local interests will be necessary to gain support on further plans for salinity control, wastewater treatment, wetlands park, and recreation land use, A verrficalion effort has been proposed to test the effectiveness ot the ground water bamer concept with a monitoring program, Crystal Geyser Unit: The Crystal Geyser Unit has been deferred indetinitely because of low cost eftective- ness Units Authorized For Planning The ten units authorized for planning under the Colorado River Water Quality Improve- ment Program are at various stages within the planning process as follows: Big Sandy River Unit: The preferred plan would remove saline water by collection wells in the spring and seep area of the Big Sandy River and would pump the water through pipeline to a pro- posed industrial use near Rock Springs, WY, Chevron and Texasgult have informed Reclamation that they no longer need fhe amount of water originally determined 11