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<br /> <br />, <br /> <br />',' <br /> <br />. <br /> <br />., <br /> <br />" <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br /> <br />. <br /> <br />" <br /> <br />w <br />~0 <br />~ <br />,:;) <br /> <br />Afr,'r the prOC<.'S5 .1;od the loc.1tioll of the plant or planes arc determined, <br />fe..:>ibilily t;r.lde inv,,'sCi;;ations woulJ be required. These would Include <br />6Ul'V(>ys of pl.:1nc sItes, evaporatIon ponds sites, nod conveyance cystem <br />lineS, with relat.::d design and cose estimates of these features Co deter- <br />In.I,.... the feasibility of their conStruction and to calculate a benefit_ <br />C.;J5t ratio. <br /> <br />i-'Jrthcr ....ork "It the Doescro site incLuding drill holes mily b(.> desirable <br />11 the future to J....c..:-rminc th.:- best methud to collect tho.' saline Oo....s. <br />T:.,' gcophysic."ll survey indi.c;llcd that the flows may bc conveyed to the <br />sUl'fa.ce via OpL'n fissures. If it is possible to t.lp these fissures with <br />O;l'~ or two wells, it might be fea.:;i.blc to collect the sallne Water' by <br />p"';~lplng from the wells. This ;ncthod mlght also collect Water that lS not <br />pr~sently being measured at th~ srrin~s but rather is getting into the <br />nver thl."oubh gravels underneath the "'_l..noel. <br /> <br />J.. comi)lete cnvironm.:>ntal analysis, including a complete study of alter- <br />r~tiv~s to ~ny proposed action, would he r~quircd prior to any construc- <br />t ion or a~tions that mibht have a major and sibnificant effect on the <br />,r,vironrncnt. The primary objective of the project is one of environmental <br />.~lprOVl.'meat. The salinity concentrations of the Colorado River, increased <br />h:, m.3n's 3ctivities, would be reduced to the benefit of Water quality, <br />.1;ricultur.11 operations, and municipal and indUStrial USers. Potenttal <br />';lVir'unu1o.'ntal problems do exist, however, in the construction and Opera- <br />.10n of a desalination plant that mUSt be studied and resolved prior to <br />~Jvanced planning. <br /> <br />..le route Selection, construcion, a.nd revegetation of the pipeline would <br />te a major factor to consid~r. Location and design of the plant(s) <br />:hemsclvcs would be important from land use and esthetic standpoints. <br />,I;1e partiCular problem thut must be resolved is how to dispose of and <br />.lOW to possibly beneficially use the brine end~product of desalination. <br />:he plant itself. depending on its fuel source, would have impacts On <br />~ir quality and energy resources. Any stream depletions associated with <br />the plant's oper3tion muSt be considered. Effects on aquatic life In the <br />upper Colorado River as well as the Lower must be evaluated. <br /> <br />FUTURE WORK <br /> <br />Essentially, the future work will enttiil the aspects discussed above. <br />Of first importance, is the continuation of sampling and measurement of <br />the flows from the springs at Glcnwood and Dotsero. This information <br />should be collected for several yea.rs to insure the proper design vf any <br />desalination plants. Secondly, based on the ~ecor.~endations of the <br />geophysical work done at the Dotsero Springs, drilling should be done to <br />determine the feasibility of tap?ing the saline flows by pum?ing wells, <br /> <br />Aft~r dct~rmining the quantity and quality of the flows that can be <br />collected, a final selection will be F.~de on the types of desalination <br />alternatives. These plans will consider the overall environmental <br /> <br /> <br />35 <br />