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<br />. <br /> <br />. <br /> <br />WATER QUALITY <br /> <br />Colorado River Basin Salinity Control Prol!1"am <br /> <br />Colorado River Basin Salinity Control Forum Work Group Meeting <br /> <br />At the April Board meeting, the Board discussed the Salinity Program Funding <br />issues and the ~reparation of testimony in support of the Salinity Control Program for the <br />various committees and subcommittees in Congress. Six letters, on behalf of the Board, <br />were prepared and transmitted to the appropriate subcommittees of the Senate and House <br />Appropriation Committees urging adequate funding for the salinity program. Copies of <br />the letters have been included in the Board folder for your information. <br /> <br />Also, at the April Board meeting the Board's staff reported on the progress that <br />Reclamation had made toward calibrating the salinity model and resolving the problems <br />with the old model. Mr. Arnir-Teymoori attended the Colorado River Salinity Control <br />Forum Work Group meeting in Salt Lake City in April. Because of the need to use the <br />new model during the 2005 triennial review, one of the main agenda items of the Work <br />Group was the status of the salinity model to accurately model the salinity in the River. <br />You may recall from previous discussions, the old salinity model did not estimate the salt <br />load accurately; and in fact, it overestimated salt loading. Reclamation has been <br />undertaking research studies to develop a reliable model that can be used for prediction of <br />salinity levels in the Colorado River. <br /> <br />At the Work Group meeting, Reclamation made a detailed presentation on the <br />status of the new model. The results of the simulation runs indicate that the new model is <br />adequate and Reclamation is comfortable with it. As a result, the Work Group has <br />requested Reclamation to run several scenarios and present them to the Work Group at its <br />next meeting in late July. Following the July meeting, the Work Group will decide on the <br />criteria and assumptions that can be used for 2005 Triennial Review for the fmal model <br />runs. The results of fmal runs will be reviewed at Work Group's August meeting and <br />then presented to the Forum at its October meeting. <br /> <br />Update on the Ammonium Perchlorate Cleanup Project- Las Vegas Wash. Nevada <br /> <br />At the January 2004 Board meeting it was reported that there has been significant <br />progress in perchlorate remediation efforts at Las Vegas Wash. It was also reported that <br />Kerr-McGee's new treatment system would become operational in April 2004. <br /> <br />The Kerr-McGee FBR system has started as scheduled. The system is currently <br />running in "start-up" mode and is expected to be fully operational in late-May 2004. The <br />perchlorate load to Las Vegas Wash has continued to drop, but will reach the minimum <br />when FBR system is fully operational. According to the Nevada Department of <br />Environmental Protection, the perchlorate load to Las Vegas Wash prior to FBR system's <br />operation was approximately 200 pounds per day, but will drop to approximately 10 <br /> <br />, 8 <br />