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<br />• <br />n <br />U <br />MOUNTAIN COQ <br />~~° ~~COMPANYL.L.c. <br />A Subsidiary of Arch Wenem Resource, LLC <br />Mazch 24, 2000 <br />Mr. Jim Burnell <br />Colorado Division of Minerals and Geolgy <br />1313 Sherman Street, Room 215 <br />Denver, CO 80203 <br />RECEI~~~p <br />MA;~ ~ 4 .-(Srl? <br />DiYision of Minerals and Geologic <br />West Elk Mine <br />P 0 Box 591 <br />5174 Highway 133 <br />SomerscL C0 61474 <br />(970)929-5015 <br />Fax (970)929-5595 <br />RE: Minor Revision No. 270 (Thermal Event); West Elk Mine; Permit No. C-80-007 <br />Dear Jim: <br />Mountain Coal Company, L.L.C. (MCC) provides this letter to update the activities associated <br />with the thermal event. As stated in the above referenced application, there are three activities <br />involved in locating and extinguishing the combustion: drilling, sealing, and installing a water <br />supply system. <br />Dnllln¢ <br />MCC has completed Holes T and Y. Last week MCC began pumping a foam cement through <br />holes V and Z. Unfortunately, a failure in the piping circuit resulted in both holes being plugged, <br />which required that MCC drill two new holes, V2 and Z2. Both holes were drilled a few feet <br />away from the original hole. MCC has also decided to drill Hole C, and possibly Hole B and D. <br />Depending on the information gathered from the hole, MCC will decide if either, both, or neither <br />Hole B and D will be drilled next. The locations of the holes aze shown on the enclosed map. <br />MCC has met with the US Forest Service to discuss interim reclamation, in particular sediment <br />and erosion control. MCC has begun to acquire silt fence, straw bales, and other sediment <br />control structures and will begin installing them today. <br />Sealin <br />MCC completed a seal at Hole Q. The seal at Hole V2 will be pumped on Mazch 25'", and <br />hopefully completed by the end of the day. The seal at Hole Z2 will be pumped following the <br />completion of V2 and should be completed by Mazch 27th. <br />Water Suoplv System <br />• The water supply line has been completed and the line tested. MCC has pumped approximately <br />270,000 gallons of water to the combustion area. MCC has intermittently pumped water into the <br />mine to "cool" the combustion area during this period until the seals can be completed. Upon <br />