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<br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />N <br />en <br />.... <br />,.... <br /> <br />6 <br /> <br />every effort should be made to expedite implementation. <br />Las Vegas Wash Unit, Nevada - The Las Vegas Wash Unit <br />also has been delayed since the DPR was drafted in 1977. Because <br />of changing ground water conditions and increased costs of salt <br /> <br />removal, construction was delayed until further study was com- <br />pleted. A reevaluation of water and salt movement mechanisms <br />has resulted in consideration of new concepts for salinity <br /> <br />control. Additional hydro-salinity studies of the Wash indicate <br /> <br />significant salt tonnages are picked up in the lower reaches of <br /> <br />the Wash below the point where treated effluent and cooling waters <br />are released. Bypass of these flows around the lower reaches of <br /> <br />the Wash could result in significant reductions in salt pick up. <br /> <br /> <br />A verification program in the Henderson-Pittman area of the <br /> <br />Wash with a bypass pipeline to convey low salinity industrial <br /> <br />cooling water, which is a small portion of the W2sh flow, past <br /> <br />an area of highly saline soil should be started without further <br /> <br />delay, The pipeline would prevent salt pickup, thus demonstrating <br />the vaiability of the newly proposed method of salinity control <br />for the Las Vegas Wash Unit. <br />A technical coordinating group made up of representatives <br />of Nevada, local, state and f~deral agencies was established <br />during the past year to formulate a comprehensive salinity and <br />wastewater management plan for the Las Vegas Wash. The plan would <br />include salinity control, wastewater management, and recreation/ <br /> <br />wildlife habitat land use measures. USBR should continue actively <br /> <br />; -"',,, <br />