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REP26865
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Entry Properties
Last modified
8/24/2016 11:57:56 PM
Creation date
11/27/2007 4:35:32 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1996083
IBM Index Class Name
Report
Doc Date
1/23/2006
Doc Name
4th Quarter 2005 Wastebank Inspection Report
From
J.E. Stover & Associates Inc
To
DMG
Permit Index Doc Type
Waste Pile/Fill Report
Media Type
D
Archive
No
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BOWIE RESOURCES, LLC <br />Bowie No. 2 Mine <br />New Coal Mine Waste Bank Inspection - 4th Quarter 2005 <br />On four 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 />December 8, 2005. <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 wet during the <br />final inspection. All organic material and topsoil has been removed ahead of the waste <br />bank founding. The upper diversion ditch was inspected with no problems noted. <br />During the second quarter 2005, the slope inclination of the second lift was flattened to <br />5H:1 V and the first lift was flattened to 2.5H:1 V. The elevation of the top of the pile is <br />sloped from south to north. The south side of the pile is approximately at the level of <br />the second bench (6060+). The north side of the pile is 15 to 20 feet higher. The east <br />side of the pile is lower at about elevation 6040. The large rock drain was not <br />extended during the quarter. <br />Most of the coal mine waste was generated from the preparation plant. Approximately <br />57,000 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 throughout the quarter. A total of 18 compaction <br />tests were taken on the pile. Two tests failed and will not be retested until the first <br />quarter of 2006. A test passes if the test attains at least 90% of the maximum dry <br />density attained in a laboratory compaction test in accordance with ASTM D698. <br />Relative compaction test 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-133B. 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 permitted <br />by the DMG. o~f~' <br />RECE9\/E6~ <br />JAN 2 3 2006 <br />Jarv(es E.` <br />P.E. No. 1 <br />~y~~esign a{groved <br />SEG/Ste . <br />of erts~Oof. ~® <br />G, <br /> <br />o~°, <br />Date <br /> <br />
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