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<br />~ <br />.~.1fI <br /> <br />A <br />~, <br /> <br />deep. The data on hydraulic characteristics obtained from the tests can <br />be used to determine the optimum depth and spacing of the wells required <br />to control the inflow of brine to the river. <br /> <br />CRITERIA FOR ALTERNATIVE STUDIES <br /> <br />The purpose of alternative studies is to investigate comparative economic <br /> <br /> <br />m~thods of solving the Paradox Valley salt loading problem. A variety <br /> <br /> <br />of alternative measures have been and will continue to be considered <br /> <br /> <br />during the plan formulation process. An arrayal table which summarizes <br /> <br /> <br />costs and benefits of several alternative plans has been prepared along <br /> <br /> <br />with a narrative description of each. An attempt has been made to discuss <br /> <br /> <br />obvious environmental impacts and the apparent advantages and disadvantages <br /> <br /> <br />of each plan. Alternatives that appeared drastically infeasible were not <br /> <br /> <br />,studied .in .depth. Baseg. pn analys.esof. cpmparat.ive .alterntives, the most. <br /> <br /> <br />effective, economical, and environmentally compatible plan will be selected. <br /> <br />COMPARATIVE ANALYSIS <br /> <br />Alternative Plan #1 <br /> <br />Xn this plan the inflow of salt into the river would be reduced by drilling <br /> <br /> <br />a field of wells into the brine layer on both sides of the river and pumping <br /> <br /> <br />saline ground water from the wells to lower the interface between the relative- <br /> <br /> <br />ly fresh ground water and the underlying brine. The pumped brine would then <br /> <br /> <br />be conveyed to an evaporation pond for disposal. It is anticipated that <br /> <br /> <br />about 180,000 tons of salt per year could be removed which would otherwise <br /> <br /> <br />enter the r~ver. Drilled to a depth of approximately 250 feet, each'well would <br /> <br /> <br />be cased and designed to pump approximately 225 gallons per minute of brine, <br /> <br /> <br />which would be transported to a central collection point. The collected <br /> <br /> <br />flows would be piped for a distance of about .20 miles over the divide between <br /> <br /> <br />Paradox Valley and Dry Creek Basin to a large solar evaporation pond. The <br /> <br /> <br />basic plan is shown on the map of Alternative Plan No, 1. Project features <br /> <br /> <br />and costs are presented on the arrayal table of comparative alternatives. <br /> <br /> <br />The arrayal table also presents an economic analysis. <br /> <br />000593 <br /> <br />12 <br />