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STATE OF COLOR4D0 mCH4RD D~M. Gnvcm n~ <br />DEPARTMENT OF NATURAL RESOURCES <br />Harris D. Sherman. EneCUlive Direeior <br />MIl~iED LAND RECLAMATION "' -'""999 <br />723 Centennial Building, 1313 Sherman Street <br />Denver, Colorado 80203 Tel. (303)839.3567 <br />Hamlet J. Barry, II I, <br />Director <br />June 23, 2980 <br />TO: Marion Dodson _ <br />FROM: Jim Pendleton <br />RE: Grand Mesa Coa s Ge0 ni cal AsZJects <br />Roy Cox and I visited the mine site at approximately 7:00 p.m., Wednesday, <br />June 18th. We met Larry Retscke, who guided us to the appropriate areas of <br />interest, Based upon my observations, I forward the following comments for <br />your consideration: <br />1) The refuse disposal fill appears relatively stable. I reminded Larry <br />that the determination of standing water table must be completed as <br />required. Larry indicated that his engineers had sampled the refuse <br />for testing tc complete their certification required by interim <br />regulation section 715.15(a)(9), <br />2) The proposed sediment control embankment site appears devcid of <br />the feared voids, which borings encountered further downstream. <br />The channel at the proposed embankment site is relatively low in <br />gradient and narrowly confined. I told Larry that if the required <br />piezometer holes did not encounter any voids, that work could <br />proceed under the scrutiny of his engineer who would be providing <br />the appropriate inspection and certification as required by interim <br />regulatory sections 715.17(e)(6)(ii), including the required stability <br />analysis. <br />/k <br />