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CHAPTCR <br />PURPOSE 11413 NCI =U. RC <br />AND (;OMMITMENTS <br />Rcclanaali :In will ensure that development of non - binding elld uses and a?nveyancc systems nvilid or <br />nlinimizC ollsil11clioll impacts to wclland and riparian vegoadmi wildlife habitat AM! within the <br />polcntial orridol. alignments ol`the ncm- binding water Conveyance pipelines and Ihal Coll slructioll zones <br />arc the 111i limilm necessary to nlc:et prajcct 0bjc:clives as described under Ylitiplllion Iqr Relined <br />Allcrnaliv el Wildlife Impact 7 in Sc:ctio n 3.5. it avoidance is 1101 possihlc, Reclamation will require. that <br />a riparian veil nd habilat mitigation and a nlrmilorilip. plan is developed to conlpcnyatC fnr the loss ol, <br />h:ibilal vn ue. <br />5.4.6 Aquatic Resources Commitments <br />% I'lle Nervi e WCOnunclRlcd Ihal water pumped to Ridges Basin Reservoir Troll the Animas River bc: <br />delivered No the reservoir al an elevation below lhC thcrinocline. `'his Could lessen IhC likChIlood (,I" <br />%) periodical y having reservoir water temperatures ticco111111,_ too wa1'm in support trout and could increase• <br />osygell IC. cls in the reservoir. Reclamation dues n01 bl:lieve there is sufficient infurnrllicnl to adopt Ibis <br />naca:;urc a Ilik link•.. Reclamation will. IhertAbre, fund :a more I'urthcr detailed evaluation of Ridges <br />'% Basin Rcs •rvoir's expected titnnological Conditions to [letter determine whetilcl• or 11ol there is a <br />% -si.-Ilil'icalv concern to include this rCCOnunelldalion in [lie project plan. 'I his Coll nrlitment is described <br />% under 1V it 11pleted -.1lion lair Refined Alternative 4 Aquatic Resources Impact 2 in lice. % 3.f;. "file. evaluation <br />will tic C� :, in Coordination with the Seivice as part of tile dcsign data Collection activities. <br />% R.cclanlan as will develop and inlpicnlcnl a mi,nitilrinj!, program at Ridges Bashi Rescrvoir lit detenninc <br />the extent ilAmecumlailon of trace cicme.nls in fish within the reservoir, flag: rc ervlin basin's <br />%1 vcgclaiion will hr largely cicarcd in order it) reduce file magnitude ol,prn(IuClivify and Ic<luction <br />% poicnlial. This, in turn, will limit mercury hmnmW9 methylated, IhC lilrnl in "Thigh it is available to <br />%, binaccanll late wilhin the food chain. Tritest will he the only fish stocked. `f rolls are hill at the top of the <br />%i fish fboel chain; Ihe.rch rc, they will not be expected to accumulate significant levels olbioaccumulawd <br />% trace elell •nts. 'Ile program will Iasi Iwo consemaNe years and be inlatcd twit years after the reservoir <br />% is lilled. I 'MgniliCarat biOaCCllmldatAn effocls are idcndfied. Rech nlathm" will wNt with the app gnWlc <br />%, local, slat or federal agc:rlcics Io c:ifher minimize the impact or olhca•wise oiler pl—olection to potentially <br />%, impacted Ish and wildlife. species and to possibly post human I ash ennstlmption advisories al the <br />'% reservoir. This conlmilmcnl is Also described under mitigation flor Rcbwd Alternative I Aquatic: <br />'% Resources Inlpaet 3 in Smikin 3.6 <br />'% I'n 11-lillimieu downstream stranding of lisp title to the operation ul,lhc pulupin' plant, change's in file <br />`Yo pumping c fill be staged in the Iclllovving manner: An increase in pumping not to exceed 50 cls per hour <br />% oul stark ecreasc and a decrease in Pumping no( to exceed 100 cfs /hr (l.i%e increase.) when natural <br />%, river flow. are above 500 cl's. At lower Ilow, these ralupint rates could substantially change rives• <br />% I'll ere lurc. when river (lows arc at or below 500 cis. Inwrases in pumphIg will not exceed 25 cfsihr ,Ind <br />% decreases n pulupin>ti will rant exceed 50 cls/hr. ilk cmumitalent is also described under Wigalkn tier <br />% Relined A (crnative •1 Aquatic Resources Impact G in Section 3.6. Seasonal bypass flows. will be nlel <br />% (ranging f1 ?m 125 - 225 W) as described unelcr mitigation liar Relined Alternative 4 Aclumic Resources <br />% Impact I. <br />' , 1lonilurin slnclies of pri�jecl- aflicied wakes on the Animas River will be implelltcntcd 1) ) 11 liriur to ;an(I <br />'% coallilluin! It)). )I least toile Years alter project uperaliorls begin (project pumping). This studies will hi <br />'Yo designed t I better define the nalive lishcry, to include better understanding apparent problems with <br />% native sue; Cr recruitment, and to monitor (1'0111 populations. If it is C0IICludCd that the 0perali0lI of the. <br />`Yo project is I nvhg sigMAnnt adverse impacts to the Ownstream ,aquatic ccosysion, Reclamation will <br />% m lke AT ' reasonable effort to modify project operations to either reduce or eliminate these impacts. <br />5.4 CNVIRCIMEN'IAI. COMMITMENIS 5-14 <br />