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<br />l\) <br />w <br />00 <br />w;.. <br /> <br />Status reports with recommendations for further action <br />will be issued on two of the 12 identified units in January <br />1978, Palo Verde Irrigation District, California, and the <br />Colorado River Indian Reservation, Arizona. Contract con- <br />sultants' reportsl conclude there is little chance for cost <br />effective salinity reduction from water system improvements. <br />Further, it is anticipated that the results of current 208 <br />planning in those areas will identify best management prac- <br />tices that will minimize the salt contribution without the <br />need for physical facilities. <br /> <br />The U. S. Soil ,Conservation Service and the Bureau of <br />Land Management are continuing their studies related to <br />salinity control. The Soil Conservation Service is studying <br />six on-farm irrigation projects in Arizona, Colorado, Nevada, <br />Utah, and Wyoming. An on-farm study is being completed for <br />Grand Valley, Colorado, which formulates a plan to improve <br />irrigation efficiency thus reducing the salt loading to the <br />river. <br /> <br />During the Forum studies, the use of high salinity water <br />by San Diego Gas and Electric Company for power plant cooling <br />was identified as a means of salinity control. The company <br />continues vigorous pursuit of its plans for a major industrial <br />use of high salinity agricultural return flow rather than <br />mainstream Colorado River water. The Company's development <br />plan also includes compliance with the no-salt return policy. <br />Pilot facilities for plant cooling including chemical treat- <br />ment and lined evaporation ponds are currently under testing. <br /> <br />Arizona Public Service Company operates the 2175 MW <br />Four Corners Power Plant in the San Juan Basin in New Mexico. <br /> <br />l"Salinity Control and Irrigation System Analysis- Colorado River <br />Indian Reservation," Boyle Engineering Corporation, August 1976, and <br />"Reduction of Salt Loading to the Colorado River from Palo Verde Irriga- <br />tion District," Bookman-Edmonston Engineering, Inc., August 1976. <br /> <br />9 <br /> <br />ji,;,..;Jj <br />