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iii iiiiiiiiuiii iii <br />STATE OF COLORADO <br />DIVISION OF MINERALS AND GEOLOGY <br />Department of Natural Resources <br />1313 Sherman 51., Room 215 I`y~~ <br />Denver, Colorado 80203 II <br />Phone: (3031 866-3567 <br />FAR: (3031872-8106 <br />DEPARTMENT OF <br />NATURAL <br />DATE: September 24, 1997 RESOURCES <br />Rny Raner <br />Governor <br />TO : Kent Gorham lames 5. Lochhead <br />" Esecuhve D~rpctor <br />Michael B. Long <br />FROM: Jim Pendleton - Division Dlrecmr <br />RE: New Elk RD tabi ty w/ Lorencito Waste <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 />JP/JP <br />