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<br /> <br />applying the same amount of water to lesser acreage. <br /> <br />l\) <br />0') <br />o <br />00 <br /> <br />This, of course; results in an economic loss since <br /> <br />fewer acres of crops can be grown. 'iJ,e' <br /> <br />(4) By changing the management regime and applying alter- <br /> <br />native production practices, some salinity effects can <br /> <br />be mitigated but only by incurring additional costs. <br /> <br />These alternatives include drain 'installation" ditch <br /> <br />lining, land leveling, deep plowing, planting bed modifi- <br /> <br />cation, sprinkler and drip irrigation, and increased <br /> <br />irrigation frequency. <br /> <br />(5) The last alternative is to plant salt tolerant crops. <br /> <br />An economic loss would usually occur since many salt toler- <br /> <br />ant crops ordinarily produce a lower economic return. <br /> <br />5. :Economic Evaluation. The cost of applying each of the <br />. <br /> <br />, al t~rnati ve remedial actions was determined, and the least <br />i <br />cos.ly alternative selected for subsequent analyses. For <br /> <br />ind*strial use, an estimate of required makeup water associ- <br /> <br /> <br />ate~ with salinity increases was selected to calculate the <br /> <br /> <br />pen4lty cost. Municipal damages were estimated by calculat- <br /> <br />ing the required additional soap and detergents needed, physi- <br /> <br />cal damages to facilities, and the cost of central softening. <br /> <br />9 <br />