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<br />o <br />~ <br />CJ1 <br />....' <br /> <br />would achieve equivalent reductions are necessary to maintain <br /> <br /> <br />salinity in the lower mainstem of the Colorado River at or <br /> <br />below the 1972 levels while the Basin states continue to <br /> <br />develop their compact-apportioned waters is described in the <br /> <br />paragraphs that follow. <br /> <br />Paradox Valley Unit <br />The brine inflow control program as proposed has been <br />tested and verified. The brine disposal plan using deep well <br />injection has been evaluated and is considered the most cost- <br /> <br />effective and environmentally preferred disposal alternative. <br /> <br />Information obtained by the deep well drilling consul- <br /> <br /> <br />tant resulted in a decision not to attempt rehabilitation of <br /> <br />the abandoned Conoco Well in Paradox Valley. This change <br />necessitated revising the deep well drilling specifications <br />and delayed the contract award until January 1984. A later <br /> <br />independent review of specifications for a new injection well <br /> <br />showed that the specifications were inadequate for a well in <br /> <br />the selected location of the salt dome. Therefore, addi- <br /> <br />tional study is needed to select another location for an <br /> <br />injection well with a resultant delay in award of contract <br />until about March 1985. The U.S. Geological Survey completed <br />installation of all remote seismic stations, with testing to <br /> <br />be completed in JUly, 1983. <br /> <br />The Bureau of Reclamation filed an application in <br /> <br />February 1983 for a change of water rights and a plan for <br /> <br />augmentation for the Paradox Valley Salinity Control Project. <br /> <br />-7- <br /> <br />, ~ <br /> <br />A"",>ii <br />