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BOWIE RESOURCES, LLC <br />Bowie No. 2 Mine <br />Coal Mine Waste Bank Nos. 1, 2 & 4 Inspections - 2nd Quarter 2013 <br />On June 27, 2013, 1 performed a visual inspection of the Bowie No. 2 Mine coal mine <br />waste banks in accordance with Rule 4.10.2. This inspection includes Gob Pile Nos. 1, <br />2 and 4. <br />I, J. E. Stover, P.E., have a wide variety of experience in the design and construction of <br />earth fill embankments. Nothing was observed during the inspection that would indicate <br />the piles have a potential for failure. The gob disposal areas were dry to damp. All <br />organic material and topsoil has been removed ahead of the waste bank founding. The <br />upper diversion ditches were inspected with no problems noted. <br />The first bench east of the haul road is covered with soil. The second bench east of the <br />haul road is mostly covered with a large subsoil pile. Most of the third and forth <br />benches east of the road are covered with soil. <br />Most of the coal mine waste was generated from the preparation plant. Approximately <br />218,382 tons of gob were hauled to the gob piles. Pond cleanings from pond F were <br />hauled back to the pile. 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 <br />compaction effort is provided by self propelled sheepsfoot compactors. Seventy four <br />(74) compaction tests were performed during the quarter. One test failed. A test <br />passes if the test attains at least 90% of the maximum dry density attained in a <br />laboratory compaction test in accordance with ASTM D698. The Operator is making <br />good progress in re- handling gob that was temporarily stacked during inclement <br />weather. The two density tests that failed during previous quarters (738 and 7558) were <br />not retested during the current quarter since no work was performed in the area of the <br />failed tests during the quarter. A drawing that shows the location of the failed tests is <br />attached. <br />There are three areas on the pile where steep slopes exist. One is on the eastern side <br />on the top of the pile. The second is in the upper central portion of the pile where pile <br />nos. 4 and 2 connect. The third is in the middle central portion of the pile. The steep <br />slope on the top of the pile is a result of end dumping and stacking gob during the prior <br />winter months. This slope is about 1.51-1 to 1.71-1:1V. A similar slope angle exists on <br />the upper central portion of the pile. The middle central portion of the pile has a <br />steeper slope angle (- 1.25H:1 V). The Operator has steepened this slope to expose <br />previously compacted material to assure active compaction is tied into the previously <br />compacted material. These steep slope sections have remained stable and do not <br />show any signs of instability. <br />-1- <br />