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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br /><:) <br />~ <br />~ <br /><:) <br /> <br />-16- <br /> <br />11. The barrier well network and Sublette Plat evaporation <br />area as proposed by the USDA, Soil Conservation Service, <br />and minimal on-farm improvements is the most cost- <br />effective salinity program for the Big Sand area in <br />Wyoming. The "buy-out" alternative as proposed by some <br />local landowners was evaluated and not found cost- <br />effective. <br />12. Collection and reverse osmosis desalination of agri- <br />cultural return flows should be included as a viable <br />salinity control alternative in all irrigated areas. <br />However, at current estimates of downstream damages, <br />desalination would not be implemented. <br />13. The by-pass alternative for the Paradox Valley was <br />evaluated and found to be more cost-effective than the <br />proposed Radium evaporation pond alternative. This was <br />primarily due to the greatly increased costs of evapor- <br />ation ponds. <br />14. The proposed desalination of the Glenwood-Dotsero <br />Springs in Colorado was evaluated in detail as part of <br />this study. It was concluded that the most economical <br />alternative was a primary reverse osmosis plant fol- <br />lowed by a much smaller secondary multi-stage flash <br />distillation unit. However, at current average damage <br />estimates, this project is marginally feasible. <br />