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DEPARTMENT OF NATURAL RESOURCES <br />David H. Getchee, Executive Director <br />i~~iiiiiiiiiiiir <br />999 <br />MINED LAND RECLAMATION DIVISION <br />DAVID C. SHELTON, Dlroctor <br />Richard D. Lamm <br />Governor <br />DATE: April 23, 1984 <br />T0: Bob Liddle <br />FROM: Jim Pendleton <br />RE: Colorado Westin <br /> <br />.'s Subsidence Response, Permit No. C-038-83 <br />Pursuant to your request, I have reviewed Colorado Westmoreland Inc.'s <br />subsidence response, dated April 9, 1984. The operator, in response to my <br />earlier comments, has indicated that mining is scheduled to occur beneath the <br />amended high-resolution subsidence monitoring grid installed above panel 2E-iN <br />off the 9th east mains at the Orchard Valley Mine. Extraction of this <br />particular panel is now scheduled to occur during the late summer of 1984. <br />I continue to be concerned about the implications the lack of definitive <br />subsidence monitoring data will have for permitting the impending application <br />for lease C-37210, referenced in the applicant's response letter. As <br />expressed in my earlier memos, the lack of definitive information regarding <br />the nature and mechanics of subsidence will necessitate conservancy in <br />permitting mining beneath sensitive areas. <br />/ep <br />cc: Ed Bischoff <br />Doc. No. 0959 <br />423 Centennial Building, 1313 Sherman Street Denver, Colorado 80203 Tel. (30~) 866-3567 <br />