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I~ JUN ~ 95 15 14 No .005 P.07 <br />~ ~, <br />~. <br />STATE ~__ F COLC)1ZAI~0 <br />U{\~1SI(.,N (11 M1NI k X15 nN13 Gf UI O(:Y ~ ~~~~ <br />Ih•p.nburnl nl ldlllral lCP~nul[C!• a".~ s <br />47?JM1' <br />i 4 m r r, 1 1 11,1]'1 1 1 •"~ 1, .~ <br />I'Irunr•' • III {11111a 1-rb• +P]r~I , <br />a,t .... un <br />1.,., ~ n n <br />~~nJ Ur. Ir i~. <br />rl.n~. rl.'u .., <br />January 14, ]994 <br />M:.. Al.ana 1.. :;c:ott <br />lttil.i.lc' Muutlt-ain 12i:sources, TnC. <br />P.U. ligx 37O <br />;:d11 Luis, CU R]]~2-0310 <br />Jte•: R4vi:;ion T,~t}3roval, San Luis Project, 1'ermii_ No. M-RF3-1]7., <br />ievision No. TR-016 <br /> <br />on January 4, 1994 the Colorado Uivision of MincraJs and Geo7ix3Y <br />conditional]y approved the technical revision aHplication suhmit.t.ed <br />to the Division on December 3, 1993, and clarified by :, nleJUU to the <br />f.i].i: dated .lxnuary 6, 1994, addressing construction ~1}•It:~ificatior):; <br />fu):' the Yllase 77, Raise 1 tailing embankment raise. The tc:rllrs of <br />the revision approved by the Division are hereby il,corp~rated inr.r, <br />}'~rmit No. M~-R'R-112. <br />'J'],c c:oJ)ciit.iuJ)e iii' Uivision approval are noted below. Plca:ae note <br />Yhai'. all otl)e:r provisions of Permit No. M-RR-112 remain in Lul] <br />Iorce and efi'ec:t. <br />ST7 pU1.A7~C1N ._~! 1 <br />7'IiL UPF..kA'1'Ok Wi).1., INSTALL AND MONITOR A MINIMUM Ol' TEN F7 E;'LUML''1'ERS, <br />WITH F'IVi: iN +'1'ALLED ALONG THE CREST OF TIiL•' EMBANKMENT KAISF. ANTI <br />F]'VF: INSTAL.LIU ALONG THE UPSTREAM TOE OF THE EMBANKMINT RAISE. 'I'li}; <br />i'ItiI.UMF:'1'F;kS ARF. TO BE INSTALLED AND MONITORED IN ACCORDANCE WITH A <br />1?k;t:T r.;~ aNt~ PRO^'C'r (."3L TO R:' A?PROVED DY T?iT UIVISIUt:. :, U%5I N t•'•:)F=. <br />'1'NE F'7}:''/..OMETER> MUST D): SUBMITTED FOR REVIEW AND Al'1'RUVAI. LIY <br />J'1:13it[)nkY 15, ]994. THE PIEZOMETERS MUST BE 7NS1'ALLF.D liY MAit(:1i 1S, <br />1!194 I,NU TA7I,ING S17itFACE ELEVAT70N IN THE LOWER POND MAY Ni)7' L'XCEF:D <br />ONF TOOT DF,YONI) TH}; yLEVATION AT THE SASE OF RAISl? 1 AT T11L 'PIMF. O]' <br />P11'LOMF.7'1~1t 'iN1'ALLATION. <br />>'J.'7)7i11,A'1'70N.. ,~2 <br />'J'HL" OI'F;RATUk WILL INSTALL MARKERS TO UELINF.ATP•. '1'111 S1:T-BACK <br />ltLQUIRL•'I) ]tI;'1'WEEN THE TAILING EMBANKMENT AND '1'liL•' F]2L'F WATER 1'UND. <br />THF.. NARKL•'kS MUfi7' BE CLEARLY VISIBJ,E AND ADEQUATP•. TO ALLOW S7'RAT(;ll'1' <br />FO}iWAitU VER7FICATIUN 1N THF. FIF,LD THAT TI1L• REQUIRED 51:7'-RA(:K 1S <br />MA7 N'1'Al NEn. <br />_.~... <br />