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PERMFILE124584
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PERMFILE124584
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Last modified
8/24/2016 10:22:08 PM
Creation date
11/25/2007 12:46:12 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1980007
IBM Index Class Name
Permit File
Doc Date
11/10/2005
Doc Name
22 Tail Gate Well Project Plan
From
22TG3E32XC
Section_Exhibit Name
Exhibit 80 Drilling Activities - MR325
Media Type
D
Archive
No
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22TG3E32XC Project Plan <br />ATnor Revision 32~ <br />Page 8 of 10 <br />DRILLING ACTIVII7ES <br />Drilling activities for the proposed methane drainage wells will include mobilizing drill <br />equipment to the sites and drilling and setting approximately 17 feet of 12-inch surface <br />casing and 2,280 feet of 7-inch concrete casing into bedrock to a zone just above the coal <br />seam, third entry. The hole will then be rotary drilled with a 6-inch diameter hole to the <br />B-Seam. A depiction of a typical completed well will be forwarded to the CDMG along <br />with the typical plug and abandonment diagram. <br />Currently, MSHA is requiring monitoring and inspection of the well twice daily after <br />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 <br />extent necessary, simultaneous with the weekly monitoring. <br />PROPOSED DRII.L HOLE PLUGGING METHODS <br />In accordance with the Coal Program Guidance Document -Methane Drainage and <br />Monitoring Wells, MCC will plug and abandon these MDWs pet DMG Rules 2.05,4 and <br />4.073 at the minimum. A mechanical packer will be set at the lowest possible point in <br />the well (note that subsidence damage to the casing may preclude access to the entire <br />depth of the casing). Above this packer the hole will be plugged with CDMG approved <br />materials to the bottom of the 5-foot cement surface cap using ttemmie line. The top 5- <br />feet of the well below the sub-surface casing cut-off point (3-feet below the surface) will <br />be plugged with a cement cap. The top 3-feet of the casing will then be cut off and the <br />hole filled in with subsoil. A permanent marker shall be installed on top of the plug <br />identifying the well. The pad will then be reclaimed to approximate original contour. <br />The Methane Drainage Well and other drilling experience for Mountain Coal Company <br />has shown that no aquifers have yet been encountered. However, the procedures <br />described above would serve to properly protect any aquifers that would be encountered. <br />RECLAMATION PLAN <br />Reclamation of the existing pad will occur as described and approved in MR-295. <br />ANTICIPATED SCHEDULE <br />Drilling of these wells is anticipated to commence November 11, 2005 depending on drill <br />rig availability and USFS approval. It will take approximately 3 days to drill and <br />complete the hole and another week to perform interim reclamation <br />The term of use is variable due to levels of gases found in the mine as a result of the <br />drilling and the level of success of pumping water, foam, and nitrogen into the mine. <br />
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