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w CJl N ~ Reclamation activities associated with the plan of implementation for meetin~ Colorado River salinity standards include the construction of two authorized projects, feasibility studies leadin~ to possible authorization and construction of 10 additional salinity control units, advance plann1n~.on the authorized Las Ve~a. Hash Unit, and steps to encoura~e beneficial industrial use of saline and/or brackish waters. He are aakin~ si~ificant pro~ress on construction of the Grand Valley salinity control unit. Constr~ction of Sta~e One is substantially coaplete. Monitorin~ continues on the Sta~e One laterals for flow fluctuations and associated operational problems. The moss and debris removal structure was installed in 1983, approxiutely one year ahead of schedule. Monitorin~ of the 8ta~e One area has shown a reduction in salt load for 1983 of 15,600 tons, of which 14,200 was related to the canal and lateral linin~ and 1,400 tons to the USDA onfarll pro~ram. A recollllllended plan has been identified in the Sta~e Two draft supplement to the Definite Plan Report. This plan would reduce salinity concentration at Imperial Dam by 14.,6 IBCJ/L and result in an overall cost-effectiveness of $766,000 per m~/L reduction at Iaperial Dam. The draft Environmental Statement is scheduled for coapletion in aid-1985. Paradox Valley salinity control unit has suffered delays in developing- the deep well injection plan. Information obtained by the deep well drillin~ consultant resulted in a decision not to atteapt rehabilitation of the abandoned Conoco Hell in Paradox Valley. This chang-e necessitated revisin~ the deep well drilling- specifications and delayed the contract award until early in 1985. In the Las Ve~as Hash Unit, a contract was awarded to construct the 3.5 aile Pittaan bypass pipeline with the completion date establi3hed for November 28, 1984. Pendin~ verification, it appears a cost-effective strategy usinq ~round water barriers in other areas of the Hash uy be viable for further reductions. A verification effort has been proposed to test the ~round water barrier concept with a aonitorin~ prog-rea to assess results. In recent years, feasibility investi~ations under the Colorado River Hater Quality Iaproveaent Prog-rea have been continuin~ essentially on schedule. Advance planning- studies are in prog-ress on the Lower Gunnison Basin Unit, under the two-sta~e planning- process, and an advance plannin~ study is planned for the Bi~ Sandy River Unit in FY 85. Advance planning- can :beg-in on three others when funding- becomes available. Recollllllendations have been ude to suspend studies on the LaVerkin Sprin~s Unit studies because of liaited salinity control opportunity and hi~h costs. The Glenwood-Dotsero Spring-s Unit studies are nearinq coapletion and further studies will :beg-in when an industrial use option is identified. 23 The 8aline Hater Use and Disposal Opportunities Unit involves the