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iii iiniii <br />STATE _OF COLOIv~uU <br />Roy Romer, Govei <br />DEPARTMENT OF NATURAL RESOURCES <br />MINED LAND RECLAMATION DIVISION <br />FRED R. BANTA, Dlreetor <br />July 25, 1988 <br />Mr. Jim Stover <br />Blue Ribbon Coal Company <br />743 Horizon Ct, Suite 205 <br />Grand Junction, Colorado 81506 <br />RE: Blue Ribbon mine bench monitoring, C-81-047 <br />Dear h1r. Stover: <br />I would like to follow-up on report submittals dated September 28, 1987, <br />January 14, 1988, March 15, 1988, and June 28, 1988 concerning bench stability <br />monitoring. <br />The results indicate that the bench is performing properly and is stable, with <br />minor consolidation settlement at a few points. <br />The June 28, 1988 survey indicates that all the monuments have risen between <br />.03 and .24 feet. We believe that this is probably due to a minor inaccuracy <br />in bringing in control from the benchmark monument. Plese attempt to <br />determine the source of this inaccuracy during your next normal survey. <br />If you have any questions feel free to call. <br />Sincerely, <br />r, Il I <br />~~~ . ~ <br />Susan J. Mowrv <br />Reclamation Specialist <br />SJM/scg <br />8986E <br />215 Centennial Building, 1313 Sherman Street Denver, Colorado 80203-2273 Tel. (303) 866-3567 <br />