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BOWIE RESOURCES, LLC <br />Bowie No. 2 Mine <br />Coal Mine Waste Bank Nos. 1, 2 & 4 Inspections — 1 Quarter 2013 <br />On March 29, 2012, I performed a visual inspection of the Bowie No. 2 Mine coal mine waste banks in <br />accordance with Rule 4.10.2. This inspection includes Gob Pile Nos. 1, 2 and 4. <br />I, J. E. Stover, P.E., have a wide variety of experience in the design and construction of earth fill <br />embankments. Nothing was observed during the inspections that would indicate the piles have a <br />potential for failure. The gob disposal areas were damp. All organic material and topsoil has been <br />removed ahead of the waste bank founding. The upper diversion ditches were inspected. One <br />maintenance item for the upper diversion ditch was noted and discussed with the mine operator. <br />A significant amount of the gob pile no. 2 was covered with three feet of cover and one foot of topsoil <br />during the 4th quarter 2006. Most of the first and second benches were covered. Cover material from <br />gob pile no. 4 is stockpiled on the west side of pile no. 2. Cover material has been removed from the <br />east end of bench number two (pile no. 2). The slope inclination of the coal mine waste has been <br />increased in this area (5h:1v to 3h:1v. TR -61). Soil has be replaced on the east side of the second <br />bench. <br />Most of the coal mine waste was generated from the preparation plant. Approximately 204,800 tons <br />of gob were hauled to the gob piles. Coal mine waste is to be placed in the pile in approximately <br />horizontal lifts no more than 24- inches thick. The coal mine waste is spread and compaction effort is <br />provided by self propelled sheepsfoot compactors. Sixteen (16) compaction tests were performed <br />during the quarter. Two (2) of the tests failed. The two failed tests were reworked and passed the <br />subsequent compaction test. Two Moisture density tests that failed during previous quarters (738 <br />and 755B) were not retested during the current quarter. A test passes if the test attains at least 90% <br />of the maximum dry density attained in a laboratory compaction test in accordance with ASTM D698. <br />The Operator is making some progress in re- handling gob that was temporarily stacked during <br />inclement weather. <br />A failure of the gob pile no. 1 would probably not be a hazard to human life. The pile is located above <br />a large flat bench. The bench is approximately 80 to 150 -feet wide directly below the pile. <br />Additionally, the gob pile sediment pond is located below the pile. If the coal mine waste bank failed, <br />the material would very likely be contained on the bench below the pile and or within the gob pile <br />sediment pond. <br />A failure of the gob piles no. 2 and 4 would probably not be a hazard to human life. A residential <br />dwelling is located over 300 -feet below pile no. 2. The piles are located above Bowie Road. A failure <br />of the piles might damage Bowie Road but would not likely impact the residential dwelling. <br />r r <br />I certify that to the best of my knowledge and belief, that t �o: -cts of the coal mine <br />waste banks have been constructed as permitted in the ..: .. - DRMS. <br />silt' _ • <br />44 71t 2P/J,sv4i <br />Stover � ,.*:4 4 ,:! Date <br />Co ► ` rofes ngineer <br />Regis ' •" s • 0130 <br />