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W 1'0 tJ, <...> Dotsero area to determine the possibility of collection by interception and pumping from the ground water. This scheme would not work at Glenwood because of interference with the resort uses in that area. Estimates are being made for collection. conveyance, treatment, and dis- posal of about 16 cis of water from the two areas. Because of the physical separation, estimates will cover a treatment facility for each area and z. combined facility. i~n appraisal report is scheduled for completion in FY 1975. crystal Geyser Unit The Crystal G~yscr, an abandoned oil test well. located 3.5 miles south of Green Rive~. Utah. contributes 200 acre-feet of water and 4,000 tons of salt to the Green River annually. Control of this source would reduce the salinity at Hoovp.r Dam by about 0.3 mg/l. The saline water erupts in the for.m of a geyser at 5-hour intervals due to carbon dioxide accumulations. The feasibility investigation of this unit was conducted by Brigham Youn1 University through a contract with the Bureau of Reclamation. A feasibility report and environmental assessment are in the final stages of completion. The basic plan of control is to build a wall or dike around the pointz of eruption to collect the discharges and then convey the water by pipeline to an evaporation pond some 3 miles away. Two alte~nates will be presented for construction of the retaining dike. Th~ les5 expensive of the two would use a concrete wall for impounding the wutcr at the geysc~ site as compared to a more costly but more esthetically pleasing 5oil-cement dike in the second plan. Diffuse Source Division Price River Unit The P~ice P.iver contribute~ approximately 240,000 tons of dissolved solids annually to the system. Selective removal of 50 cfs during low flow periods could rc~ove about 100,000 tons of salt per year resulting in an estim~ted reduction in concentration of 8 to 9 mg/l at Imperial Dam. Investigations to date have consisted of field surveys and collection of streamflow and water quality dat~. Study of the control of this source has not progressed beyond a tentative plan to selectively remove the more hj.ghly concentrated flo.....s and evaporate or desalt them. Other methods such as water syst~ms improvement and irrigation scheduling will b~ evalu~ted for applicability to this source. A feasibility study is scheduled for completion in fiscal year 1978. -3-