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<br />CJ) <br />C"") <br />..-l <br />..-l Landowners in the valley are actively applying conservation land <br />~) treatment. Some treatment is appl ied by individuals on land under their <br />C:' control while other practices are implemented by groups of landowners <br />for mutual benefit. Application of land treatment is expected to <br />continue whether or not an accelerated program for salinity control is <br />forthcoming. Projections indicate that about one-fourth of the improve- <br />ment recommended for salinity control may be installed during the next <br />la-year period. <br /> <br />Currently agricultural land is being converted to residential and urban <br />uses at the rate of about 800 acres per year. Without extensive develop- <br />ment of oil shale it is estimated that an additional 8,800 acres of <br />agricultural land will be converted to residential and urban uses during <br />the next ten years; extensive oil shale development could raise the <br />estimate to 9,700 acres. With these projections there would be about <br />57,000 acres of land remaining in irrigated agricultural use after 10 <br />years. Exercising existing zoning authority could control the pattern <br />of new developments, preserve the better agricultural lands, and maybe <br />reduce the acreage converted to urban uses. <br /> <br />Four alternative plans were developed that satisfy objectives of the <br />study. Each plan has two parts; one part addresses recommended manage- <br />ment practices, the other discusses needed structural measures. Each <br />plan assumes only 80 percent of the measures identified as being needed <br />will be implemented. Formulation of the plan was oriented toward the <br />primary objective of reducing salt load pickup by improving irrigation <br />efficiency in the cultivated area and by improving watershed conditions <br />on privately owned land in the diffused source area. <br /> <br />3 <br />