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CAM MINING, LLC Munger Canyon Mine Coal Mine Waste Bank Inspection -2nd Quarter 2006 On June 19, 2006, I performed the required quarterly visual inspection of the Munger Canyon Mine coal mine waste bank in accordance with Rule 4.10.2. I, J. E. Stover, P.E., have a wide variety of experience in the design and construction of earth fill embankments. Nothing was observed during the inspection that would indicate the pile has a potential for failure. The gob disposal area was dry to damp. Previous inspections by the undersigned noted that all organic material and topsoil has been removed ahead of the waste bank founding. The upper diversion ditch was inspected with no problems noted. The first coal mine waste, 1,270 tons, were placed in the pile during the period November 23`d through November 29, 2004. The coal mine waste was leveled during the second quarter 2005. Approximately 880 cubic yards were hauled to the gob pile and compacted during April 2006. Coal mine waste is to be placed in the pile in approximately horizontal lifts no more than 24-inches thick. The coal mine waste is spread and compactive effort is provided by a front-end loader. Five compaction tests were performed during the period. All of the tests passed. A test passes if the test attains at least 90% of the maximum dry density attained in a laboratory compaction test in accordance with ASTM D698. A failure of the pile would probably not be a hazard to human life. The pile is located in a remote area well away from human habitation. I certify that to the best of my knowledge and belief, that the fill and other aspects of the Munger Canyon Mine refuse pile have been construc~gd~ miffed in the design °o°~°~ approved by the DMG. ®eFP~~ ~l~ Recommended mairitenance: None :~ ®`~ I °-^°~~ tQ ,~ e Cdr:-, !~'~7~n •~s ~~,t '1~t"l to {o g~~ '~'~~ Date ~0nal Engineer 19230