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<br />tlypass pipeline to COII<:>c1 mosT of lr,e Do':'!ter
<br />quality sewage lrOOl"",e....l plant effluent anc
<br />conv-ey It 10 me ....asn 0010..... tne mlNC:epllQr
<br />taCllitles ThiS pla" ....as authOriZed tor
<br />conStruCtion by me COloradO River Basin
<br />SaliM)' Control Act O! June 24 '974
<br />ConstruCtion 0' <In i1CU'SS road to a b"Hfle'
<br />dam st1e In the wasn bofgan In 1971-:ne
<br />same year t~e mdust"'e5 lX'gan contalnmg
<br />ltlerf wastewater In 1Int'd ponds \\ir!nlfl J
<br />montr15 saline grOundwater SlODP'?'d'lawlnq
<br />from a seep art-a located downhill Irom tile
<br />tailings pands The s.alinLty concentration ot
<br />t!le grOundwater sampled near Las Vegas
<br />Wasn also dropDE'(1 Hydro salinity studies
<br />completed In 1978 showeo tIlat aslQe trom
<br />Industnal wastE-waler S('f>pag.. tr"\ere was
<br />very "nil' saline regional groundwater
<br />enlerlng las Vegas WaSh These 'rt(l,calOrs
<br />at a Q'mlnlsnlng sail load grpal1yrWL/CE'(] the
<br />eosl e'iecllveness or Ine planno:.J faClll!'8$
<br />Consequently CQnSlrucllon was oefent'(] m
<br />1978 Iu <1.110'" <1. '~ful.ly of rille' <Ire;! S
<br />ryarOlogy geolog, and p:itet1tlOl! nf'O-'d tor
<br />salinity control
<br />E....en mougn me r<:>glonal salin",
<br />grOundwater InflO", ....as ~,n!!ally
<br />undetectable Reclamaflon nt...~'dE'd a t>et!.er
<br />estimate of future groundvvater Inllo", In
<br />response to antiCIpated InClP.<tSt'd urtlan
<br />IrngatfQn Aquoter :€>StS In the area bo;:t'ween
<br />me up(:>er and lo......,.r vallP'y ha.'€' sol1ce
<br />determined trial s.-'<2'pag~ from me .rngatlo,-,
<br />....OUld t~ Imp(wjp(J 'rom 'each'ng tt'loC ",;!Sr'
<br />by !Ile 10v. transm'5S:..ol) of the ,nlervenmg
<br />s.o,IS An analysiS 01 oJata collf'l..:ti;:(l bf:>!W('€n
<br />1976 and 1979 a~I~M mat troe rE-glooal
<br />~rounawater InllOw continues to tot"
<br />nS'9nlf>eant A wale' and salt tlud~: lor th,s
<br />>ame penoo also ShOwed t~at !he S<llt load
<br />Nas Incrl"as,ng In tnesame reacn 01 the wasn
<br />IS before Tr"s Inc~ IS prlmanlv due to
<br />1atlve salts being leacnea Irom tr<e wast'
<br />llluvlum Oy me sewage treatmel'1! plant
<br />!Hluellt arxl small amounts Of "'_'lSIev.aler
<br />rom omer s.aurces
<br />A":er 3 years of stud', ReclamatlQr1 s
<br />lrategy for controlling Las Vegas ".'iasn
<br />alinity i'lO... ,.,.'11 focuS on pre-,.-,,:>r.tlng stOnT'
<br />unoH and ...astev.ale' d'SCha.g.' "om
<br />'11'0g "',l~ saline SO IS as tl1€";' 110... :0 !....e
<br />:010radO River
<br />Inft;ally the pia" caliS lor O"P'.'E'n!Il'l9
<br />~ge Irom ...asl~a',ef dllcnes b~
<br />
<br />cons!ruCI,)n 'a b.'pass P'P'_' ~'r,
<br />once-l'1rnugr Cool 9 ....f1!l"r f'vr 'he
<br />IrtOuS!r1il' )fT';)le." ~h,~ 'Aasr ShaIlO....
<br />1'.'911S .', lito:. _.,..,.Jr. 0(" ....anges,roo!.:
<br />grounCO\iH" ''!V{' . rl ~, ,Jill _ t..'')r<; "nd
<br />atr",r me p,~,,-. If, Jrnc-I""l---:l Isch~- ,,,'-'<.J~'
<br />19B3,
<br />5<?<:Of'OIY R-x ar ,-;flor -af'1 IIm,: 1~1
<br /><;o-~-,pag.. ,. :>ev'i19'" lrr-at,-.-":.',, p,a'" '~"".Jep'l
<br />by )nsl', ,~!,r n l t'lypas :n If g ~h'
<br />n("'l~ <;.op .' ~h{' Nilsr E""",rrlf'1m:~n'i11
<br />Slud.es and C*' l'1'l" ,;' or"i>dral" I,).
<br />1Qy,<OS: b,'pass ,:rJan mil ,",,";girt W, !'stal
<br />year 1983 It an ,..::c:.ora can tIE' 'p.act)e(J ""rtr
<br />lor...al ag€'nCle5 _" '1':,\ ~::' ma'1agp "'Ie
<br />",asl'''Willer ,n t~... "'ilst'. 'r-., bypas& chanr"~1
<br />c)Uld t.- 11='l'T""'J 1985
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<br />'fCNCVS .'lore R''oCOam;l~,')n 1'11111 >Il
<br />comP!",te Las V"'Qil5 I...as" stalL rp'\:)~
<br />Ihatsum"".1LZe'Str'erd,!,tj,-eilrs _"SILJOY,l"O
<br />''Jescl'!.>O.'" ,1'.3Ipq.'( 't'o'J, ..r:) 1".. Unl"
<br />sait lOild!' 1- ~ C ~.l', RI r b ~tl~_.J Ir_,
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<br />Reclamation's Me Elmo Creek
<br />Study
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<br />Fred Rossow. a BUn?aIJ Soil Scientist allhe
<br />Durango PrOfE'ClS Office, Inspects one 01 the
<br />drop structures In the o\ler~year old
<br />Montezuma Valley ImqatiOn Company
<br />dIStribution system
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<br />:' S. y'r,il!lon Service call rOt"
<br />'Hh '-'9 lS rr at :r.e sailS p'c~f'O lJp Oy
<br />qr; 1w,w .".'PrTl<'flt as pOSS,ble By
<br />""1. g ~t]~ iln- !":)I groundwater
<br />"'I'i ~J IC''C 1(1 IN l"!a! SOils esP('(:lillly
<br />.. SE' l. ed lrom ... lancos Sha~_ less
<br />1~' '-:W<lt,~r )nlamlnQess salt tonnage
<br />... ",:Elrr,., Cr~..."
<br />R, it!' 11, prt.'r'fTerj pi::!" calls for
<br />om' "n :.1~'" M1 ,1flillS pn the MVIC
<br />:.- ..... ';:, 'l' 1l1P ".ilnal anollrtlng
<br />,,:'1, '...~I/I( ,1rlalS ..,'hen have high
<br />""-'[ ~l'- &~ ~...( Soil ConSl'rvatlOl1
<br />''''' .', Ir )I,ncreaspng the
<br />." -lam <lOOlltatIO'1 Ol 'mgat/Qfl
<br />W,l!> T''9<''t~"." I""~ !'".....O pla'1S could
<br />.~jlJ 'n <1"1 .,~ ,1 <;;Ill ellle-"ng McElmo
<br />.'v itX-.J1 "8 II tons eacll year
<br />^ Rt. ii~ dt"'n 'Jrah leaslbll,ty reoort IS 10
<br />to. SO In9 ')l 1983 ana will bIO'
<br />~,;;~. . ,\" .avant(. c:rat'
<br />";]. f'1p..1rT s,a,e-rnent ;EIS) Tne
<br />'f :', ".r. '1 ilno dral1 E1S wlilll"
<br />'-. ... 'If l~"3 it"':1..., bo? fOllowed
<br />"(; "'rn..r':illln1Di1ct statemenl
<br />M<' le-as,t' 'II) report lor Ihe
<br />'.1.:EI r.._. S,o ,n,r, O-:wlrol Un't could
<br />Qt' ',,.,' -.... 'I: :l,~Dt'fl(l;ng upon the
<br />r'_'Ge" "'9,SialIOM ontrOdUCt'd In
<br />,~'es.! ...-n,':rl....' '<l ili.;\ho":e the
<br />Iol,:E arr G ot".,rs 'or advancec
<br />;' u -< 'nS:'UCII()n
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<br />USDA Dn!arm Study in McElmo
<br />Creel<
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<br />"""""":5 ';- On!dr..-
<br />$\-.,:>",7' tI1e_l"'~ planning ~eDOr:
<br />\.\ '.1" Drogram 10' salil"l!y
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