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<br />o <br />CJl <br />00 <br />o <br /> <br />1992 Annual Progress Report <br />Water Quality Standards for Salinity <br />Colorado River System <br /> <br />June 1993 <br /> <br />Prepared by the <br />Colorado River Basin Salinity Control Forum <br /> <br />INTRODUCTION <br /> <br />In 1975, the seven-state Colorado River Basin Salinity Control Forum (Forum) prepared <br />a reportl which included numeric criteria and a plan of implementation and recommended that <br />each state adopt the report as its Colorado River Basin salinity standards. Each of the Colorado <br />River Basin states adopted the recommended standards which were approved by the <br />Environmental Protection Agency (EPA) in November 1976. <br /> <br />The Clean Water Act requires that water quality standards be reviewed at least once each <br />three-year period. Accordingly, in 1978, 1981, 1984, 1987, and again in 1990, the Forum <br />reviewed the existing state-adopted and EPA approved salinity standards. Based on the 1990 <br />Review, the Forum found no reason to recommend changes in the numeric criteria. <br /> <br />The plan or'implementation requires that the Forum analyze the progress and results of <br />the salinity control program as well as other actions in the Basin which impact on the River's <br />salinity. In addition, the states, through the Forum, have agreed to submit an annual report to <br />the Environmental Protection Agency and to each state's water resource and pollution control <br />agencies summarizing the results achieved by the salinity control program and the effects of <br />other actions in the Basin having an influence on salinity. This report covers the period <br />October 1, 1991, to September 30, 1992. <br /> <br />The salinity control activities are moving forward but not as rapidly as had been proposed <br />in the plan of implementation. Inadequate federal funding to carry out the program is causing <br />its implementation to fall behind schedule. The nonfederal partners have their funding in hand <br />and are ready to move forward. As of this reporting period, 230,000 tons of salt are being <br />removed annually from the River system as a result of salinity control activities. By the year <br />2010, it is estimated that a total of 1,464,000 tons must be removed annually in order to <br />maintain the salinity standards. <br /> <br />The following sections briefly review the historical water supply and use and summarize <br />the progress made in implementing the salinity control program. <br /> <br />IWater Ouality Standards for Salinity. Inc1udine- Numeric Criteria and Plan of <br />Implementation for Salinity Control. Colorado River System. <br /> <br />:', <br />