2008-06-09_PERMIT FILE - C1980007 (4)

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E 1 Longwall Panel Methane Drainage Wells Project Plan Technical Revision No. 111; • Page 12 of 13 left in a condition equal to or better than that observed on Mountain Coal Company's entry into the area. 9. Any coal recovered incidentally to this project will be in the form of cuttings or core and would either be taken back to the mine site or disposed in the mud pits. ANTICIPATED SCHEDULE Drilling of these wells is anticipated to commence in Spring 2008 depending on drill rig availability. A Minor Revision with the Annual Operating Plan as approved by the USFS will be submitted to the CDRMS prior to commencing any construction activities. It will take approxunately 2 weeks to drill and complete each hole and perform interim reclamation. Development of the low-volume roads for these wells is expected to commence during the summer of 2008 to ensure access in the 2008-drilling season. The team of use is variable due to levels of methane found in the mine as a result of the drilling. If successful and the prospects for good methane drainage appear positive, then these sites could be operational for up to five years. Therefore the sites will be fenced and signed for public safety. MEASURES TO BE USED TO COMPLY WITH PERFORMANCE STANDARDS FOR THE PROJECT (43 CFR 3484 1(a) 30 CFR 815.15 and Colorado Division of Reclamation Minim and Safety Rules and Regulations) 1. Operator shall comply with applicable requirements of surface management agency, 30 CFR 815.15, or approved State program. 2. Install casing and blowout preventers in drill holes in known oil, gas, and geothermal areas. It is anticipated that gas will be encountered in the rubblized-zone of the E Seam. Gas is known to be encountered after mining in previous methane drainage holes in the area. Casuig will be set in each hole as necessary to maintain circulation of cuttings to the surface. 3. Drill hole plugging requirements. In accordance with the Coal Program Guidance Document -Methane Drainage and Monitoring Wells, MCC will plug and abandon these MDWs per DRMS Rules 2.05.4 and 4.07.3 at the minimum. A mechanical packer will be set at the lowest possible point ul the well (note that subsidence damage to the casing may preclude access to the entire depth of the casing). Above this packer the hole will be plugged with CDRMS approved materials to the bottom of the 5-foot cement surface cap using tremmie line. The top 5- feet of the well below the sub-surface casing cut-off point (3-feet below the surface) will be plugged with a cement cap. The top 3-feet of the casing will then be cut off and the 12