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February 16,2011 C-1981-019/Colowyo Coal Mine JHB Inspection Topic Summary NOTE: Y=Inspected N=Not Inspected R=Comments Noted V=Violation Issued NA=Not Applicable Y -Air Resource Protection R -Roads N -Availability of Records N -Reclamation Success R -Backfill&Grading R -Revegetation Y -Excess Spoil and Dev.Waste NA - Subsidence N -Explosives N -Slides and Other Damage R -Fish&Wildlife R - Support Facilities On-site R -Hydrologic Balance Y -Signs and Markers R -Gen. Compliance With Mine Plan N - Support Facilities Not On-site NA -Other NA -Special Categories Of Mining NA -Processing Waste Y -Topsoil COMMENTS This was a partial inspection conducted by Janet Binns of CDRMS. The Colowyo Coal Mine is an active surface mine with open 3 pits; South Taylor Pit,West Pit,and East Pit. Winter conditions persist on the site with snowpack throughout the reclaimed and undisturbed areas. Weather was warm, above freezing,but extremely windy. ROADS: The mine access road to the office is paved. The mine access road was dry and free of snow. During the inspection roadsides were being graded to push snow further back from the lanes. Haul roads throughout the mine site have been plowed of snow. Snow was melting off the active areas and in most portions of the roadways, running off and not pooling. The operator has provided cuts in the berms within the active mining areas when runoff begins to pool on the roads. Due to the high winds some of the haul roads were getting dusty. Two water trucks were watering the Haul roads during the inspection;265 and 432. The dragline will be walked along the haul road to the south once contours are achieved in the west pit parcel. This roadway has been shaped to accommodate the dragline,but Tony noticed some cracking in the surface of the road. CCC will investigate this cracking and assure walk road stability. FISH and WILDLIFE—Rule 4.18: A small herd of elk were observed on the east side of the West Pit Fill. HYDROLOGIC BALANCE -Rule 4.05 Not all the ponds were accessed. Ponds are frozen and only Streeter Pond, Stoker Pond, and Gossard Ponds were discharging when the operator checked on 2/14. Ditches throughout the mine site are snow covered and could not be observed. CCC has submitted a new revision TR89 to the Division to retain a number of stockponds as permanent features in reclaimed areas. BACKFILL AND GRADING,TOPSOIL, and REVEGETATION: The operator continues to backfill the West pit in the northern portion of Section 9 with the 102 dragline. This backfilling is progressing but not at final configuration yet. Some of the regraded parcels in this area were graded and topsoiled in 2010. A portion of these 2010 parcels were not seeded with the permanent seed mix in the Fall. CCC plans on seeding these parcels during