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iii iiiiiiiiiiiiiiii~ <br />999 <br />DIVISION OF MINERALS AND GEOLOGY <br />Department of Narural Resources <br />131 7 Sherman 51., Ronm 215 <br />Denver, Colorado 80203 <br />Phone: 17071 Bhh-3567 <br />FA%. (7031 0128106 <br />DATE: September 24, 1997 <br />TO: Kent Gorham <br />~_~ __ <br />FROM: Jim Pendleton ~= <br />RE: New Elk RD tabi ty w/ Lorencito Waste <br />4111 <br />~~ <br />DEPARTMEIV-T OF <br />NATURAL <br />RESOURCES <br />Roy Romer <br />Governor <br />lames 5. Lachhead <br />Executive Director <br />Michael 8. Lang <br />DivlSion Dlrena <br />I reviewed the analysis submitted by Greystone Development Corp for <br />the Lorencito Canyon mine, prepared by CTL/Thompson, Inc, <br />geotechnical consultant. This analysis, performed upon a <br />manufactured synthetic refuse for the Lorencito Canyon mine, <br />determined the anticipated strength of the Lorencito waste to <br />exceed that of the current refuse. The methodology is acceptable <br />and I recommend acceptance of the submittal with one condition. We <br />should require Lorencito Canyon to verify the actual run of plant <br />refuse by sampling at the RDA following commencement of operation. <br />cc: Dan Hernandez <br />doc: M:\Coal\JAP\LorenRDA.WPS <br />STATE OF COLORADO <br />JP/JP <br />