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<br />Apparently, the excavation work for this new road mobilized significant quantities of fines. <br />CYMC had also dumped waste blocks into and on top of the sediment control structure. As a <br />result, the structure has apparently failed because small quantities of sediment were reaching <br />Yule Creek in the spring of 1999. <br />There has been no other significant effect on the quantity and quality of ground water or <br />surface water from CYMC's past operations, and none is anticipated with Sierra's operations. <br />Sierra has prepared a Stormwater Management Plan in compliance with the rules defined by the <br />Water Quality Control Division of the Colorado Department of Health. This plan includes the <br />use of Best Management Practices for storm water. Sierra will comply fully with the terms of its <br />discharge permit and Stormwater Management Plan. <br />The diesel fuel tank is placed within a heavy membrane lined berm structure whose <br />vohune exceeds the capacity of the tank. Operating practice will include keeping the discharge <br />valve of the main tank closed and locked during non-operating hours. <br /> '° er~te ar caDxwo <br />~' N.aw W.M NECEIVEG <br /> r,~ <br />. <br />~0.11YCF 6 THE STATE EN00.H~11 <br /> nw~A. YnY~ao.v.~.r• ra APR <br />15 1999 <br /> mrnrocaYRtvo~ aN ~ <br /> cHnrx3E w ovvr~nswa~nooaESS i wrwraw <br /> wal.rerr, 1aB10O(TWf 011 EmolounmLUY1 <br /> ,. ~~ <br />Mr.E~s)_31.1~S:R6 _.fl!!~L`.±Lb? _~!-crsf72P1J <br /> <br /> w,um._.-~---a7r1J---- ~~- <br /> ~a.~> >~J~----- SOP <br /> S <br /> x TI1B esal es TNF ~u..... NER <br /> ~ WE1116~OfYAa1®1_-~~f>~z.a~__. w <br />0 <br /> ^ IA£aIOOf W~1BITMK M-6EA. ..... -- <br /> ^ FICaLW COMi1bL DNI NlY6Ea__ __ --. <br /> > WY..~ muY1...G~"ec~so.J _ oxNeesWe.osw:wmll i-a,HSO_~ <br />2 <br />~ <br />'LJ <br />~ <br />~ <br />~n M~~L <br />~M <br /> W_l~ <br />¢. <br />.M <br />LddR5l. <br />~ <br />Yk1b~W_1~linJ ~~k <br />ryN <br />..... A, ~q.. ~ a, <br />. iW.-12 ^N.®e, lr4-8Q- ^E.IQW. _/o .0..Y. <br />SE tM •Y. ~E-IK e~c <br />.. <br />. <br /> cc <br />nn <br />.. <br />.._.]_`:Y_ Rtan^R~IJ0.1,. LSd__ RFm®E.^W.LK <br /> <br /> • 1ni910RTNM ON 6104dl NIIIaOL MYLOfAIpK CpMY <br /> <br /> a l1Y.oa.lro aan(O adpq rNl ra Gan am is eimaeaanae n.r~ <br /> R. aY0.0 ~C ~ s+a.•.m 4 tlabbeY ~[<. <br /> l~a.nw n~.n.aa.n: ^Clrphm/19~ ^OmrAnaESn. <br /> l 1 f~ Iv nd M 6~OYY TWn INn~I Yw Oa mwv Oa~LL aE s tNl M seu <br /> n ~D' ca~I tY~lgr. <br /> Gau+1 n eonlw.ln GAW caa, b msrY abr ~ tir+aar~. p.p, n <br /> ..~Y~-.b.a.~....a~, ~rr,~a., <br /> NYI~Tb pr o...q rr NP a wti ay.a. o....l d' f <br /> 7crnr 6 L.ees~f ` <br />' <br />13 9 <br /> <br />S. J1Cat/G H1.Ye0./MJ 1 <br />/ <br />9 <br /> Fp1 CFFI~ I!/¢ ONLY <br />- ~ . <br /> ~~l ~ %_ YAY 141999 <br /> ~~~' e h tr <br /> pin C~ No ~ OY_ Op_~ Wp_ 0.Y_ Yp UY <br /> <br />The waste piles are <br />quite porous so even during <br />heavy rainfall or spring snow <br />melt periods, water drains <br />through the piles and into the <br />sediment control structure at <br />the toe of the waste pile, then <br />into Yule Creek. The pH of the <br />water runofftends to be slightly <br />high (basic). Yule Creek tends <br />to be acidic, so the result may <br />be a very slight improvement in <br />the quality of Yule Creek <br />water. <br />(il Water Rights: A <br />well permit was acquired by <br />CYMC from the Colorado <br />Division of Water Resources. <br />Sietta received approval of a <br />transfer of ownership of the <br />well permit on May 14, 1999. <br />(Permit No. 034872-F, copy <br />shown here). There has been <br />no reported effect on existing <br />water rights from CYMC's past <br />operations, and none is <br />anticipated with Sierra's <br />operations. <br />19 <br />