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w 00 -.J W For more information on a specific unit, refer to the Status Re~ort, Colorado River Water Quality Improvement Program, January 1983, publishe by th15 office. For information regarding the status of particular USDA units, refer to the USDA 1983 Annual Report, Colorado River Basin Salinity Control Program. A summary of the potential capabilities of the various units to remove salt, the amount of salt removed by operating units, and the associated effects at Imperial Dam are shown in table 1. Backup data is available in the Colorado River Water Quality Office. Completed and Operating Grand Valley Unit, Stage One The Government High1ine Canal lining, Government High1ine Lateral replace- ments, and the moss and debris removal structure are substantially complete. Hydrologic and fish and wildlife monitoring in the area are continuing. Monitored results confirmed the removal effect of 14,200 tons per year based on Reclamation facilities in place. Implementation of USOA onfarm activities has been underway in Grand Valley since 1979. For 1982, SCS personnel estimated the salt reduction in the entire Grand Valley area, including Stage One, to be 17,700 tons. . The monitoring program was initiated on several farms and will be expanded as funding levels increase. Meeker Dome Unit During verficiation studies, the abandoned Scott, James, and Marland Oil Wells were cleaned and plugged. The monitoring program was started in October 1981 to test results of the plugging, and the results remain favorable. The monitoring indicates that the water levels in the ground-water observation we 115 have dropped' 5 i gnifi cant 1y, confi rmi ng that the well 1 eakage has stopped. A Preliminary Findings Report on results of the studies to date was completed. A final report is scheduled for June 1985, after monitoring has been completed. Authorized and/or Under Construction Grand Valley Unit, Stage Two Data collection for the Stage Two area is continuing. Design data collection is underway on the West End Government High1ine Canal and laterals, the first facilities scheduled for construction under Stage Two. Estimated construction costs for all Stage Two canal lining and lateral replacements, including deferred canal lining, are $185,600,000. 10 , iJ J 1 .; , ~J , -) <, :.1 <:, ii j' ";, J: " "il i! i! ii ,'I II J! .li 1i ...jl '1! "j i' ;r ',1 , "i " , .il :;1 '! Ii ,i -'f , . j ;;k,