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2009-01-13_REPORT - C1996083
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2009-01-13_REPORT - C1996083
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Last modified
8/24/2016 3:39:53 PM
Creation date
1/13/2009 10:34:30 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1996083
IBM Index Class Name
REPORT
Doc Date
1/13/2009
Doc Name
4th Quarter 2008 Wastebank & Gobpile Inspection
From
J.E. Stover & Associates, Inc
To
DRMS
Permit Index Doc Type
Waste Pile/Fill Report
Email Name
JJD
Media Type
D
Archive
No
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BOWIE RESOURCES, LLC <br />Bowie No. 2 Mine <br />Coal Mine Waste Bank Nos. 1, 2 & 4 Inspections -4th Quarter 2008 <br />On December 10, 2008, 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, 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 <br />a potential for failure. The gob disposal areas were damp to muddy. All organic material and <br />topsoil has been removed ahead of the waste bank foundings. The upper diversion ditches <br />were inspected with no problems noted. <br />A significant amount of the gob pile no. 2 was covered with three feet of cover and one foot of <br />topsoil during the 4th quarter 2006. Most of the first and second benches were covered. Cover <br />material from gob pile no. 4 is being stockpiled on the west side of pile no. 2. <br />Most of the coal mine waste was generated from the preparation plant. Approximately 66,000 <br />tons of gob were hauled to the gob piles. Coal mine waste is to be placed in the pile in <br />approximately horizontal lifts no more than 24-inches thick. The coal mine waste is spread and <br />compactive effort is provided by a self propelled sheepsfoot compactor. Twelve compaction <br />tests were performed during the quarter. A test passes if the test attains at least 90% of the <br />maximum dry density attained in a laboratory compaction test in accordance with ASTM D698. <br />Five of the tests failed. All five areas were retested and passed. <br />A failure of the gob pile no. 1 would probably not be a hazard to human life. The pile is located <br />above 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 belowthe pile. If the coal mine waste bank <br />failed, the material would very likely be contained on the bench below the pile and or within the <br />gob pile 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 <br />failure of the piles might damage Bowie Road but would not likely impact the residential dwelling. <br />t?q <br />I certify that to the best of my knowledge and belief, that the fill and othe6t et coal <br />mine waste banks have been constructed as permitted in the design my 13 :3 a ° , S. <br />a®o? vo <br />James E. Stov ?,r,., a 114 to <br />P.E. No. 19230 e?'P °°° ?ab? <br />•©a? o a Q <br />.±.
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