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PERMFILE43748
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PERMFILE43748
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Last modified
8/24/2016 10:46:12 PM
Creation date
11/20/2007 11:41:11 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1980007
IBM Index Class Name
Permit File
Doc Date
1/3/2006
Doc Name
Methane Drainge Wells Project Plan
From
Drill Holes 20-04, 20-05, 21-05 & 21-06
Section_Exhibit Name
Exhibit 80 Drilling Activities - TR103
Media Type
D
Archive
No
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Methane Drainage Wells Project Plan <br />Technical Revision 103; MDWs 20-04, 20-05, 21-05, 21-06 <br />Page 9 of 12 <br />ambient atmosphere. The trailer would be totally enclosed with fencing and the fence gate <br />locked to prevent public access to the equipment. The equipment would need to be approved and <br />inspected by the Mine Safety and Health Administration (MSHA) prior to installation. <br />MONITORING <br />Initially, MSHA may require monitoring and inspection of the active de-gas installation twice <br />daily after installation. It is anticipated the frequency of monitoring would decrease to a weekly <br />monitoring and inspection of the installation. Routine maintenance will occur to the extent <br />necessary, simultaneous with the weekly monitoring. <br />PROPOSED DRILL HOLE PLUGGING METHODS <br />In accordance with the Coal Program Guidance Document -Methane Drainage and Monitoring <br />Wells, MCC will plug and abandon these MDWs per DMG Rules 2.05.4 and 4.07.3 at the <br />minimum. A mechanical packer will be set at the lowest possible point in the well (note that <br />subsidence damage to the casing may preclude access to the entire depth of the casing). Above <br />this packer the hole will be plugged with CDMG approved materials to the bottom of the 5-foot <br />cement surface cap using tremmie line. The top 5-feet of the well below the sub-surface casing <br />cut-off point (3-feet below the surface) will be plugged with a cement cap. The top 3-feet of the <br />casing will then be cut off and the hole filled in with subsoil. A permanent marker shall be <br />installed on top of the plug identifying the MD W. The pad will then be reclaimed to <br />approximate original contour. <br />The Methane Drainage Well drilling experience for Mountain Coal Company has shown that no <br />aquifers have yet been encountered. However, the procedures described above would serve to <br />properly protect any aquifers that would be encountered. <br />A drawing depicting a typical abandoned MDW is attached as Figure No. 1, Proposed <br />GVB/MDW Hole Plugging Method. <br />RECLAMATION PLAN <br />Reclamation of the pads and roads will follow when it is decided by MCC that the drill holes are <br />not performing their intended purpose. <br />1. Upon completion of each phase of activity at a given site, all debris, trash, and drilling <br />related equipment, or de-gas housing will be removed from the site, <br />2. When the mud pit or pits aze sufficiently dry, they will be filled with stored sub-soil <br />material and compacted to minimize any settling. <br />3. A backhoe and a bulldozer will redistribute material on and around the drill pads to <br />achieve as closely as practicable the original contour of the site. The azea will then be <br />ripped or scarified. <br />4. Stored topsoil will be distributed as evenly as possible over the disturbed pad area. <br />
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