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w 00 0') The FWS (Fish and Wildlife Service) and the USGS (Geological Survey) .work on 00 the salinity control program with USDA and Reclamation programs. The n~s is currently involved in studies with 13 of the salinity control units. FWS also provides input into planning activities through partici- pation in a variety of working/planning meetings with all entities involved in the salinity program. The USGS Water Resources Division operates and maintains a network of 22 streamflow and .water quality stations in the Colorado River drainage basin uSed in salinity program analysis. In addition to collecting hydrologic data for the salinity programs, the Water Resources Division has developed a data base for site specific studies. They have also performed evaluation studies for Reclamation on several of the key gages on the river system. The major EPA programs dealing with salinity--Water Quality Standards, Water Quality Management Planning, and NPDES (National Pollutant Discharge Elimination System) permits--are largely delegated to the States. EPA main- tains oversight and approval responsibilities for these delegated programs. EPA has unique responsibilities to review and comment on EIS's (Environmental Impact Statements). Through the NEPA (Nat i ona 1 Envi ronmental Pol i cyAct) process,EPA urges the identification of potential salinity impacts resulting from the 'proposed action and encourages the discussion of measures to minimize and mitigate adverse sal i nity impacts. The Department of Agriculture, through the SCS (Soil Conservation Service), has completed salinity control planning reports on the following irrigation salt source areas: Grand Valley, Colorado Uinta ~asin, Utah Big Sandy, Wyoming Moapa Valley, Nevada Lower Gunnison, Colorado Vi rgin Valley, Nevada McElmoCreek, Colorado Little Colorado River, Arizona In addition, studies are underway on the Mancos Valley, Colorado, and the Price-San Rafael Rivers, Utah. The Upper Virgin, Utah, and the Palo Verde Irrigation District, California, studies are pending. Implementation of the onfarm salinity control measures in the Grand Valley and Uinta Basin are currently underway utilizing cost-sharing funds provided by the ASCS (Agri cultural Stabili zati on and Conservati on Servi ce). The ARS (Agricultural Research Service), the Cooperative State Research Service, and the Extension Service also playa vital role in the salinity 5 , .' ,~ ;) , , :~ "~i