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<br />I <br />I <br />I <br />I, <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I' <br />I <br />I <br />I <br />I <br />I <br /> <br />~A. KD:r:FYIK: <PmU\TICNS CF YIP J <br /> <br />It may be possible to save =sts by making physical IOOdifications to the <br />YDP or by changing plant operations. The Yuma Projects Office will <br />examine these options. These options will also be examined and <br /> <br />i..nq:>lenented, as awropriate, even if other sources of water are developed <br /> <br />that rech.1ce the need for the plant. The following is a discussion of <br /> <br />possible internal IOOdifications to the plant or its operation. Afpraisal <br /> <br /> <br />level estimates developed for the options for both internal IOOdifications <br /> <br />and for alternative sources of repla<::em3Ilt water are provided as <br /> <br />attachrrents to this cIocurrent. <br /> <br />'1=b:t,C1e (";:!o!Qe <br /> <br />For carparison pw:poses, between the various alternatives, a base case was <br /> <br />developed. This base case would be typified by Case 6, in Table 2. Under <br /> <br /> <br />this case the plant is operated at capacity for 330 days during the year. <br /> <br />The remaining period is ch1e to either outages of the canal carrying the <br /> <br />Wellton-M:>hawl< return flows or planned or unplanned outages of the YDP. <br /> <br />The salinity arriving at Inperial Dam for this case is 830 p/rn. Of the <br /> <br />110,000 acre feet of Wellton-M:>hawl< return flows, 105,000 acre feet are <br /> <br />diverted into the yeP ..mich produces 74,000 acre feet of product water and <br /> <br />31,000 acre feet of reject stream flow. The remaining 5,000 acre feet of <br /> <br />untreated Wellton ~ return flows is diverted into the Colorado River <br /> <br />as blend flow. This would provide a salinity differential between 1nperial <br /> <br />Darn and NIB of 116 p/rn. <br /> <br />jDn Li) H!4J Z F,t t~ ~ \! <br />1\ l;"'" ~ !oi ";;.- '4 ~~, ~ :. '" ;~~,. 1 <br />:s... =-"11 j ~~. " r~ ~ \, ,"~, ~"l ;I <br />SUR F: t'T T u,~~.,;,~ <br />- :.:..,,;. ...f .:_ ~.... ~ _ ~ <br /> <br />/-/ ~~: / ~~ '~\ ~. ~t} ?\~ <br />,,,- ~ ~._"t.;;~ <br />