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<br />'.C) <br />r) <br />I-' <br />co <br /> <br />c.o <br /> <br />Southerly International Boundary near San Luis, Mexico. The United States will <br /> <br />need to install additional groundwater pumping facilities to continue to deliver <br /> <br />the water in overland facilities to obtain credit or else achieve early resolution <br /> <br />on the groundwater pumping issue.) <br /> <br />(4) United States agrees to help Mexico obtain funds for improvement and <br /> <br />rehabilitation of Mexica1i Vs1ley and also to contribute an unstated amount of <br /> <br />funds for measures to solve the salinity problem in Mexica1i Valley, including <br /> <br />tile drainage. <br /> <br />The U. S. estimates the capital cost of the desalting complex at about $98 <br /> <br />million and the capital cost of lining the Coache11a Canal about $21 million, <br /> <br />giving a total capital cost of $119 million. Since there will be other costs, <br /> <br />this is a minimum value. In addition, annual operation, maintenance, and re- <br /> <br />placement costs are estimated at approximately $10 million a year. <br /> <br />There is no numerical limit set for salinity as the agreement only states that <br /> <br />the differential in salinity between Imperial and Morelos Dams will not exceed <br /> <br />115 ppm. Thus, if the river's salinity increases as has been forecasted without a <br /> <br />salinity control program, the salinity of the water delivered to Mexico would in- <br /> <br />crease by a like amount. During negotiations with Mexico, United States informed <br /> <br />Mexico that it plans to undertake a Colorado River salinity control program. <br /> <br />Mexico is apparently counting on this program since, in the August 30, press <br /> <br />conference of Mexican Foreign Secretary Rabasa, he states, "the final result (of <br /> <br />the agreement) will be that Mexica1i farmers will have forever-~- they and their <br /> <br />children and their children's children--- water whose agreed to annual average <br /> <br />salinity will never exceed 1010 ppm which is perfectly acceptable". Given the <br /> <br />115 ppm differential bet.~en Imperial and Morelos Dams, this statement means that <br /> <br />Mexico expects that the salinity at Imperial Dam will never exceed an average <br /> <br />annual value of 895 ppm. Thus, if the United States is to maintain the inter- <br /> <br />8 <br />