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<br />~ <br /> <br />o <br />CO <br />(':) <br />W <br /> <br />Bureau of Reclamation <br />Colorado River Salinity Control Program Accomplishments <br />for Fiscal Year 1992 <br /> <br />, <br /> <br />GENERAL <br /> <br />The 1991 Joint Evaluation Report shows that Colorado River salinity <br />concentrations continue to fluctuate, as they have over the entire <br />periOd 1941 to 1992. The year-to-date salinity at Imperial Dam was <br />770 ppm as of July 1992. Without recommended salinity control <br />measures, the salinity at Imperial Dam is expected to exceed the <br />numeric criteria. <br /> <br />" <br /> <br />About 1.5 million tons of salt per year must be removed from the <br />Colorado River System by the year 2010 to maintain total dissolved <br />solids (TDS) levels at the numeric criteria of 879 milligrams <br />per liter (mg/L) at Imperial Dam. Reclamation projects currently <br />control about 100,000 tons per year. Overall, an additional <br />1.25 million tons per year need to be controlled by the year 2010 at <br />a remaining cost of approximately $600 million. <br /> <br />Funding <br /> <br />For fiscal year 1992, $1,148,004 was appropriated for General <br />Investigations, and $37,417,000 was appropriated for construction of <br />Reclamation's salinity projects (Grand Valley Unit, Lower Gunnison <br />Unit, Paradox valley unit, and Dolores/McElmo Creek Unit) , <br /> <br />Ceiling <br /> <br />During fiscal year 1992, Reclamation, in consultation with the <br />Forum, initiated an effort to secure a ceiling increase for <br />Reclamation's salinity control program. The current ceiling will be <br />exceeded in fiscal year 1996; an increase of about $135 million is <br />needed. Reclamation will seek the increase in the next session of <br />Congress. <br /> <br />GENERAL INVESTIGATIONS <br /> <br />Big Sandy River Unit, Wyoming <br /> <br />Conclusion of planning activities for this unit are pending the <br />plugging of one deep aquifer monitoring well. Reclamation will be <br />requesting proposals from qualified drilling contractors in fiscal <br />year 1993. The well plugging is scheduled for award in 1993. <br /> <br />14 <br />