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. ~, ._ ~ . _ -ter ,~¢,k <br />•~ ~ r ~ III I II I II III IIII'II ~ ~~~~ 7 <br />. <br />~11i~;P)~9ny (.. <br />Y.uiii. I1rY1i.,. <br />OCT O 1 1986 <br /> <br />r:.r <br />~~~`1 <br />4 y! <br />kCf: 8MM-UW <br />Fir. Uonald k. Johnson <br />710 Hoed 35.6 <br />Palisade, Colorado 81520 <br />RG UNUCRGRUUNU IkJEC11Uh CUKTRDL(UIC) <br />Draft Environmental Impact <br />Statement for b;rlf kidye <br />Corporation hahcolfte Mine <br />Uear Mr. Johnson: <br />Thank you very awch f'or your comments on the above-referenced <br />tnvlronmental Impact Statement (EIS). Tour objective, technical-oriented <br />preszntation of inforsiation is exactly the sort of letter we look forward to <br />receiving. We share your concern regarding the ground-water resources fn the <br />Piceence Basin, and also remain uncertain as to the aGequacy of proposed <br />o~,erational features of the Pilot Project. <br />Under authority of thK Safe Urinking Water Act (SUWA), the U. S. <br />Environmental Protection Agency (EPA) is responsible to assure that <br />underground injection activities will not endanger underground sources of <br />drinking water (USDMs). 4y definition, awater-bearing formation maw be <br />classified as a USDM if there are either potential future uses or current <br />uses, and the Total Dissolved Solids (TDS) content of the formation f1~4d •!s <br />less loan 1U,000 mi111gras~s per liter (mg/1 ). <br />The EPA has granted Mblf Ridge Corporation (MRC) authorization tie 1~. <br />with tfie Pilot Pro~act please (with respect to the UIC progrna). Moaeppr lip <br />bare Halted the ;it¢ G' the projoct to onx tr~ll ^,air a:;d h_ve lnel~ ~ • <br />several other stipulations that I believe adequately address your coMerns. - <br />Basically, wee are expscNng MRC to denan:trace, through field-instrua~t,att,a, <br />that their proposed operation is designed to adequately protect the <br />ground-water resources. Specffically, we are requiring WRC to propose irplAeds <br />by which they can prove their claims regarding well construction, prouaiwratar <br />monitoring, and subsidence prediction/prevention. <br />Should MRC decide to go ahead with a coaiaercial operation. th4y iaYtt <br />first wbeit a detailed ~ackaoe of ipforwtatian covering such iteos as Npii...,, w, <br />construction. ptapt~orl plapss pydrogeology of the leace area. ~avtpt j -•'~a, <br />StlptkdanC~ Kati! i~~. , nQ.arNalKtratlOnS Of their ~ ~- <br />::t ~ ~ ~~~ +~ lballdeR alyr hells. t ,.;~' y~'~'~<y <br />W~ ~~ ., 1 ~ ~atiClg procidures'$1~~1~ ~t~- ~ ~. <br />t ~~y <br />~'~' ~i' ` + ~ y- k x < ~~I" yl, J - •r '~i~` 'yam <br />'L{~ <br /> <br />