Laserfiche WebLink
BOWIE RESOURCES, LLC <br />Bowie No. 2 Mine <br />New Coal Mine Waste Bank Inspection - 3`~ Quarter 2006 <br />On three occasions, I performed visual inspections of the Bowie No. 2 Mine coal mine <br />waste bank in accordance with Rule 4.10.2. The final inspection occurred on <br />September 28, 2006. <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 inspections that would <br />indicate the pile has a potential for failure. The gob disposal area was dry to damp <br />during the final inspection. All organic material and topsoil has been removed ahead of <br />the waste bank founding. The upper diversion ditch was inspected with no problems <br />noted. <br />The eastern large rock drain was competed to its final elevation during the quarter. The <br />western large rock drain was extended. <br />Most of the coal mine waste was generated from the preparation plant. Approximately <br />163,000 tons of gob were hauled to the gob pile. Coal mine waste is to be placed in the <br />pile in approximately horizontal lifts no more than 24-inches thick. The coal mine waste <br />is spread and compactive effort is provided by a self propelled sheepsfoot compactors. <br />Compaction tests were performed during August and September. A total of fourteen <br />compaction tests were taken on the pile on five separate occasions. All tests passed. <br />A test 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. Relative compaction test <br />results are enclosed. <br />A failure of the pile would probably not be a hazard to human life. A residential dwelling <br />is located over 300-feet below the pile. The pile is located above SH-1336. A failure of <br />the pile might damage the state highway but would not likely impact the residential <br />dwelling. <br />I certify that to the best of my knowledge and belief, that the fill and other aspects of the <br />new coal mine waste bank have been constructed as <br />by the DMG. ~~ <br />design approved <br />Jarxie$ E. Stover ' A ~~ Date <br />P.E°a~0+ 19230 „® c~,®~ <br />,SF/r °OOf a°aa°°° V\i~ <br />~~S~~ONA~~ ~~° <br />