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Colowyo C-1981-019 8 January 2007 Pg 5/9 ~~- General Mine Plan Compliance: -The 101 dragline is in the East Pit performing reclamation. The 102 dragline was working on reclamation in the west pit. The 103 dragline was walking to the B-Seam. Both the 102 and 103 draglines have been down for servicing. -The 1 14 shovel operation was currently working on removing the A-Seam overburden. -The operator was dumping overburden in the mid-pit area of the West Pit. -The mining at the Colowyo Mine appears to be progressing as discussed and approved in the PAP. Air Resource Protection: -All of the areas of the mine were well compacted and stable at the time of the inspection so there were no problems with fugitive dust. There were also no problems with fugitive dust at the coal stockpile at the Gossard Loadout. Excess Spoil: -The reclaimed portions of the West Pit spoil pile were well vegetated and appeared to be stable at the time of the inspection. Runoff from this portion of the pile goes into the West Pit pond. No erosional problems were noted of the pile at the time of the inspection. The upper portion of the pile is truck-dumped spoil. This part of the pile appeared to be stable at the time of the inspection. The reclamation plan calls for the top 75 feet of this pile to be hauled to the West Pit to achieve AOC. This is being further addressed in Technical Revision 63. - Streeter fill was covered with snow but appeared to be stable at the time of the inspection. No erosional problems were noted on the fill. This pile has gone through a Phase II bond release. The operator has submitted Technical Revision 64 to terminate quarterly inspections for this pile. The Division issued a proposed decision to approve TR-64 on 17 October 2006. The Streeter pond below, however, still receives runoff from disturbed areas, so it must remain. -The Section 16 Fill was not accessible at the time of the inspection due fo snow. This pile has gone through a Phase II bond release. The operator has submitted Technical Revision 64 to terminate quarterly inspections for this pile. The Division issued a proposed decision to approve TR-64 on 17 October 2006. The Section 16 Pond below the fill still receives disturbed area runoff and will remain. Highwall Miner: -ICG was on site but was not currently mining the E-Seam on the east side of Taylor Draw in the West Pit at the time of the inspection. They appeared to be at about their 20+h hole at the time of the inspection. The previous holes outside the operational area have been filled, with approximately five holes remaining open. This is still acceptable based on the approved highwall mining plan in the permit. ICG is mining from the north to the south and they are stockpiling the coal to the north behind the operation. They have completed the mining activities on the west side of Taylor Draw and all of the highwall miner holes have been filled. An assessment in the office showed that no highwall miner hole exceeded 900 feet on the west side of Taylor Draw. This is well short of the permit boundary.