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OXBOW MINING, LLC <br />3737 Hwy 133 P.O. Box 535 Somerset, Colorado 81434 USA Tel (970)929-5122 Fax <br />June 12, 2006 (970)929-5177 <br />GCt\~~® <br />Mr. James Burnell ~~i GG19 ~QQ6 <br />Environmental Protection Specialist <br />Colorado Division of Minerals & Geology ~~ 9,AO°'w9y , <br />1313 Sherman Street, Room 215 ~N;~°`9w <br />Denver, Colorado 80203 <br />Re: Oxbow Minine. LLC - NOI CX-2005-223-06 <br />Request for Alternative Borehole Beeline Procedure. <br />Deaz Mr. Burnell: <br />The following information is intended to provide a request for an alternative borehole sealing procedure. <br />OMLLC has drilled the three western boreholes ECM-OS-39, ECM-05-44 and ECM-05-45 approved in <br />the NOI and found a "bum" area or oxidized zone in the vicinity of the target D seam coal. OMLLC has <br />also proposed to drill, four (4) additional approximate 45 degree angle boreholes to determine if there is <br />unburned coal located east of each present borehole. One such angle borehole is proposed for the north <br />(ECM-05-45) site and south (ECM-05-39) site and two such boreholes are proposed for the ECM-05-44 <br />site. <br />PROPOSED BOREHOLE SEALING PROCEDURE <br />CDMG Rule 4.07,3 (1) provides for the approval by the Division of the sealing of a borehole with a <br />surface plug only. As noted above, so far the subject boreholes have encountered "bum" and oxidized <br />coal. The boreholes are located updip of potential mining azeas and "neaz" coal outcrop azeas. As such, <br />the boreholes did not encounter any groundwater. Because of the physical conditions found associated <br />with these boreholes, OMLLC proposes to seal the boreholes associated with these three pads with a 10 <br />__ foot concrete surface plug only. ,~ <br />Please contact me at 970-929-5806 if you have questions. <br />Sincerely, <br />J es A. IGger (~ <br />vironmental Coordinator <br />Enclosures <br />xc: Jim Cooper, OMLLC <br />Desty Dyer, BLM , <br />files <br />• Page 1 <br />