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Three Geotechnical Drill Holes at Deer Creek Shaft Project Plan <br />Minor Revision 338 <br />Page 7 of 9 <br />PROPOSED DRILL HOLE PLUGGING METHODS <br />In accordance with Coal Program Guidance Document -Methane Drainage and <br />Monitoring Wells, MCC will plug and abandon these holes per the DMG Rules 2.05.4 <br />and 4.07.3 at the minimum. <br />The geotechnical holes will be filled with a lightweight bentonite-cement from the bottom <br />of the hole up to 50 feet above T.D., then filled with lightweight bentonite-cement and/or <br />sand mixture to the bottom of the surface casing. The remainder of the hole to the <br />surface, will be filled with a lightweight bentonite cement. <br />The Methane Drainage Well Project, Shaft Projects, and other drilling experience <br />for Mountain Coal Company has shown that no aquifers have yet been encountered. <br />However, the procedures described above would serve to properly protect any aquifers <br />that would be encountered. <br />RECLAMATION PLAN <br />Upon completion of each drill hole at the site, all debris, trash, and drilling <br />related equipment, will be removed from the site. <br />A backhoe, track excavator, and a bulldozer will redistribute roadway material <br />(roadbase) on and around the drill pad to achieve as closely as practicable the <br />original contour of the pad. <br />Any coal recovered incidentally to this project will be in the form of cuttings or <br />core and would be taken back to the mine site and disposed of in the RPE. <br />ANTICIPATED SCHEDULE <br />Drilling of these geotechnical holes is anticipated to commence May 1, 2007, depending <br />on drill rig availability and CDRMS approval It will take approximately six weeks to <br />drill, obtain geotechnical information, and complete the holes. <br />TRAFFIC <br />Access to the site will require 4 trips per day and one mobilization and de-mobilization. <br />Crews will need to be changed on rotation of every I2-hours. This will require <br />approximately 4 vehicle trips per day. A water truck may be required to supply water to <br />the drill rig and would require approximately 6 round trips per day. <br />