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BOWIE RESOURCES, LLC <br />Bowie No. 2 Mine <br />Coal Mine Waste Bank Nos. 1, 2 & 4 Inspections — 3`d Quarter 2012 <br />On September 22, 2012, 1 performed a visual inspection of the Bowie No. 2 Mine coal mine waste <br />banks in 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 dry to damp. All organic material and topsoil has <br />been removed ahead of the waste bank foundings. The upper diversion ditches were inspected with <br />no problems noted. <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 132,100 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 compactive effort is <br />provided by self propelled sheepsfoot compactors. Seventy-five (75) compaction tests were <br />performed during the quarter. Twelve (12) of the tests failed. Twelve (12) of the compaction tests <br />were retests. One test (738) failed during the quarter and was not retested. A test passes if the test <br />attains at least 90% of the maximum dry density attained in a laboratory compaction test in <br />accordance with ASTM D698. The Operator added personnel to work the gob pile in the afternoon <br />shifts and weekend shifts as well as another compactor during the day shift. This along with good <br />weather has allowed increased placement and compaction of existing material. The Operator made <br />significant progress re- handling and compaction of stacked gob. <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 imp residential dwelling. <br />, ®'1 . G l <br />1 certify that to the best of my knowledge and belief, th is* tRt d'I ift cts of the coal mine <br />waste banks have been constructed as permitted in tl�V approves 1 44 AL DRMS. <br />• •', r, tiO <br />jyy <br />�A •0 1 ®��h /�C�'o �4+� <br />Cm®� QY e 6�o Date <br />a 'dhal Engineer <br />Registrmilbfl Mg. 19230 <br />