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<br /> <br />. <br /> <br />.. <br /> <br />. <br /> <br />,-'.. <br /> <br />.e:, <br />, <br /> <br />. <br /> <br />. <br /> <br />o <br /> <br />. <br /> <br />*'" <br />I-'" <br />0) <br />-...l <br /> <br />FOREWORD <br /> <br />Environmental protection efforts dealing with agricultural and nonpoint <br />sources have received increased emphasis with the passage of the Clean Water <br />Act of 1977 (P.L. 95-217) and the subsequent implementation of the Rural <br />Clean Water Program. As part of this Laboratory's research on the occur- <br />rence, movement, transformation, fate, impact and control of environmental <br />contaminants, data and analytical methodologies are develope~ Co assess the <br />causes of and possible solutions to the envir9nmental effec~s of ir~igated <br />agriculture. <br /> <br />This report resulted from research which .util'ized a s:tt!lpla', multi-level <br />;optimizaeion procedure to fQ,rmulate the most cost-effective array of salinity <br />control s'trategies for the Upper Colorado River Basin. The procedure was <br />applied to best management practices for salinity control from irrigated <br />agriculture as well as structural and engineering technology for control of. <br />natural point and'nonpoint sources. The incremental cost-effecttveness <br />methodqlogy indicated the location and general type- of alternatives to be <br />implemented in a least-cost basin-wide salinity control progr~m. The.method~ <br />ology can be adapted to the evaluation of control programs for other <br />pollutants and is especially useful in the selection of the most cost- <br />effective measures where several alternatives exist. This report should <br />benefit environmental managers as they identify and'implement pollution <br />control strategies relevant to western irrigated agriculture. <br /> <br />a.z;. W,{(.Q <br /> <br />Clinto.nW.. liaU <br />Director <br />Robert S.Kerr Environmental <br />Research Laboratory <br /> <br />1ii <br />