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-2- There is no evidence at this time to support identification of any significant impacts due to acid rain upon fish or wildlife in the upper basin of the Colorado River. Localized problems may occur for particular lakes located in precise geologic situations and receiving particular acid emissions; but, there is no convincing pattern of any regional pattern. in the Adirondack Mountains acid precipitation resulting from surplus emissions which are in excess of those being emitted in western U. S. has taken two to three decades to effect sensitive local fisheries where they have changed from good to measurably affected. A map was provided to each state at the Technical meeting, published by the EPA, Portland. The map shows the degree to which various areas in the west are sensitive to acid precipitation based on water alkalinities. Action: A summary report will be presented by Rod Stone'_to-the Council. He will contact USGS,and EPA and find out status of present investigations. Report on Water Quality in Terms of Nutrients in Colorado River - Dr. Larry Paulson, UNLV, and Victor Lambou, EPA, Las Vegas. Further follow-up of 1982 Council Resolution #3. Reduction-of phosphorus levels has had an effect on clorophyll which is a primary productivity measurement. As phosphorus levels decrease due to lower standards placed on effluent discharges in the upper basin, the productivity will decline throughout the drainage below. Action: It is recommended that an update on the status of this situation be given by Dr. Paulson at the Council meeting. It was also recommended that the Council either reaffirm the existing resolution or take a stronger position. tamer Basin Summary - Rod Stone, Chairman other items of interest from the Subtechnical Committee include: 1. The upper basin states are concerned that regulations prohibiting import of grass carp may not have been enforced. A 1981 resolution #2 of the Council pertained to grass carp hatcheries and importation. The Council should discuss what measures are necessary to take care of this. These grass carp importations are placing a burden on relationships and may also result in changes in import-export regulations in the future. The upper basin is very interested in getting detailed presentations on grass carp and tilapia information available. 2. The Upper Basin Subtechnical Committee is concerned about lack of involvement from other disciplines. This problem also exists to some extent in the Lower Basin ,Subtechnical Committee-. It is recommended that a review of the basis of establishment of the Subtenchnical Committee and its expected performance be provided from the full Council. Lower Basin Summary No additional items.