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<br />c, <br />(~) <br />~.. <br />-J Direct desalting of the river's flows also has been proposed ~S <br />en <br />_ a solution. However, the concentration of salts in the rivet', whi.1e <br />high to its users, is at a comparatively low level for any considera- <br />I"lotl of I1Il economic r]eMl ting procram. Of greater feasibility is the <br />!till' or dt'1I,11 HilI> t:l:Chr1iquNJ Oil 1l,d:l.\,ldunl sourcen of wilter with:l.n the <br />Colorado ~iver Basin that are at hieh salinity concehtrations. <br />Salinity Control Pro;2~ <br />The FtlQA has been studying salinity of the Colorado River for a <br />llumbE,r of years throtigh its Colorado River Bnsin Hatlllr QuaHty Control <br />I'r(J,1('(~t. Tht, IltlQlI, together with the U. S. l3urel1u of Rec1amation, <br />has idclltiH,'d a number of specific sal1nity control projects and has <br />investigated these ~rojects on a re~onrtdissance level basis. In <br />essence, these salinity control projects involve the improvement of <br />existing irrigation projects to prevent salts from entering the river <br />system and the elimindtion of salts fronl highly sa1ine natural springs <br />1\1 tlwllgh these f1cudif'o H('re ('fl/wnl: ,ally compll'tecl approximately <br />t\~O y{'urlJ ngo, thpFWQ/\ I~O\lIpl:I..I\(,Il!l J VI' t'Cp(ltC. which j,nclueles tit{! <br />results of thes~ studies, has not yet been issued. Ho~ever, irtform~. <br />tion on these salinity control projects is available from the files <br />of the FlIQA and in the reports of the Type I, Comprehensive Framework <br />Sti:Mi'e!l fM"'l:11t!''t1ptmr and Lower Colorado Regions. These reports are <br />;'S y~"t' unp'\jtn'~1:tlc(1 Tri a nl1al ed1.tion. <br />Tht't"HQ/\ t\Uot!BBR have i.dcntified twelve trri.gllted ureas and <br />four natural sources of mineral pollution that appear susceptible <br />of control and appear to he pal:t:lcularly promising at this time. It <br />11110111d be noted that t!Wl"C lOllY bll other salinity control proJcctll <br /> <br />-7. <br /> <br />,"," 'I, <br />