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been authorized for construction and to secure authorization for the construction of additional participating projects as the essential investiga- tions and planning are completed; and (G) a legislative program consisting of the analysis and study of water resource bills introduced in the U.S. Congress for enactment, the preparation of evidence and argument, and the presentation of testimony before the Committees of the Congress. A. ENGINEERING - HYDROLOGY 1. COLORADO RIVER SALINITY PROGRAM The Upper eolorado River eommission has continued its interest and involvement in the eolorado River Basin salinity problem. The Commis- sion staffhas worked with representatives of the Commission's member States in coordinating and correlating activities with other State and Federal agencies, particularly the Colorado River Basin Salinity Control Forum, which is composed of representatives from the seven Colorado River Basin States. The Forum has developed water quality standards and a plan of implementation to meet the Environmental Protection Agency Regulation (40 CFRPart 120, Water Quality Standards-eolorado River System: Salinity eontrol Policy and Standards Procedures). Section 303 of the Clean Water Act requires that water quality standards be reviewed from time to time and at least once during each three-year period. The Forum in 1990 reviewed the existing State- adopted and Environmental Protection Agency-approved numeric salin- ity criteria and found no reason to recommend changes for the three lower mainstem stations. The values are: Salinity in mgL1 Below Hoover Dam ............... 723 Below Parker Dam .................747 Imperial Dam ........................ 879 The Forum is continuing to study salinity conditions and to develop new salinity projections. The Forum is also developing flow versus salt load relationships that will reflect present and anticipated conditions. 8