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24HG Sample Hole(s) Project Plan <br />Minor Revision 321 Revision <br />Page 9 of l2 <br />MONITORING <br />Currently, MSHA is requiring monitoring and inspection of the wells 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 DRILL 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 per DMG Rules 2.05.4 and <br />4.07.3 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 tremmie 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 pad will follow when it is decided by MCC that the drill hole(s) are <br />not performing their intended purpose. <br />1. Upon completion of each phase of activity at a given site, all debris, trash, and <br />drilling related equipment, will be removed from the site. <br />2. When the mud pit or pits aze sufficiently dry, they will be filled with stored <br />sub-soil material and compacted to minimize any settling. <br />3. A backhoe and a bulldozer will redistribute material on and azound the drill <br />pad to achieve as closely as practicable the original contour of the site. The <br />azea will then be ripped or scarified. <br />4. Stored topsoil will be distributed as evenly as possible over the disturbed pad <br />area. <br />5. The entire drill pad azea and reclaimed roads will be re-seeded using the <br />USFS/CDMG-agreed seed mix (described below) for reclamation purposes on <br />