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i~- ~~iii~«~iiii~~ <br />C Netl Cvpv„r. <br />, Pvesltlen! <br />N, Nant Baav <br />Fbpene R. 8rauar <br />Gm6on w. BrUCbn,r <br /> <br />Pplrict C. Dryer ,~~ <br />Robert J. SM,ve ' <br />Dme J $IeKMn <br />Apy,rt D IMmea <br />Gvy R. NindplPb <br />October 6, 1980 <br />'Mr, James Pendleton <br />Senior Geologist <br />Mined Land Reclammation Board <br />P.oom 423 <br />1313 Sherman <br />Denver, Colorado 80203 <br />SUBJECT: Roadside Mine <br />Dear Mr. Pendleton: <br />A Pi UfCSSiDn AI COrpUrabUn <br />' £nq~nnnrs Architer,ts P~anm:rs <br />760 w~~¢m~Dnvc <br />Giant Jona~on. CoWraifii BrWr <br />YJ3 2a] ]569 <br /> <br />GC i _ ~J i980 <br />P11iyF.D L. at NRE~ ~~'~cs i'f~tF~ <br />Cn1o. Dcv <br />On October 3, 1980 you called concerning the reject pile at Roadside <br />Mine, We understand you observed some leaching and salt deposits <br />on the surface of the reject pile in a small area of the pile. <br />The computer analysis of the slope stability of materials in the <br />reject pile anticipated the ex istance of ground water within the pile. <br />We believe that the observed condition is entirely within the parameters <br />used in the computer slope stability analysis and continue to believe <br />the pit is stable at a slope of 2-1/2 1 or flatter, <br />We also understand the subject reject pile wilt eventually be covered with <br />a non-toxic material. 6te suggest that this material be a free draining <br />soil mixture. An imperious cover is nbt desirable as it may result in a <br />build-up of moisture at the coal-soil interface which could result in some <br />slump of the cover material. <br />Respectfully, <br />AR1X, A PROFE5Si0NAt C PORATI.OTi <br />Gordon W. Bruchner, P.E., t.S. <br />GWB:jb <br />cc: Dale Fenwick <br />