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<br />, <br /> <br />B. Prospects for Control of Salt from Point Source Discharge <br />of Groundwater <br /> <br />c,.., <br />'';1 <br />W <br />(.It <br /> <br />Control of salt yielded from point sources can be technically and eco- <br />nomically feasible. The Bitter Creek Well near Rock Springs, Wyoming, <br />was successfully plugged for a very favorable cost-effectiveness of <br />$51,699 per mg/l per year; the economic detriment value was $425,000 <br />per mg/l per year. However, it should be pointed out that the financial <br />and environmental risks involved in dealing with aquifers located at <br />great depths and/or aquifers under pressure can be significant. <br /> <br />The proposed control of salt in Salt Creek, Colorado, using a system of <br />lined evaporation ponds appears to be technically and economically <br />feasible, with a cost-effectiveness of $228,494 per mg/l per year. This <br />, is due to the extremely high salt concentrations in the water. <br /> <br />, <br /> <br />A similar project on Onion Creek, Utah, has a poor cost-effectiveness <br />of $885,417 per mg/l per year because of the lower concentration of <br />salts in Stinking Spring. It is, however, still technically feasible. <br />If the decision were made that salinity control is desirable at the <br />site, a cost-effectiveness comparative analysis could be made with other <br />units to determine the least costly alternative. Under such a procedure, <br />the evaporation pond may still prove to be the most economical treatment. <br /> <br />- <br /> <br />33 <br /> <br />.;.e <br /> <br />