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applicable requirements of 30 CFR 815.15 and the Colorado Mined Land <br />• Reclamation Regulations stated in C.R.S. 34 -33 -101. <br />3484.1(a)(2) (Installation of casing and blowout preventers in drill holes in known oil, gas, and <br />geothermal areas) <br />The Dry Fork area is not in a producing natural gas field. Significant quantities of <br />gas under pressure are not known to have been encountered in any of the previous <br />drilling efforts in the area. Methane from coal mining has been liberated in <br />significant quantities at the West Elk Mine. Since the proposed drilling will not <br />penetrate the entire Rollins Sandstone and not drill into the underlying Mancos <br />Shale, blowout preventers may not be used. Casing will be set in each hole as <br />necessary to maintain circulation of cuttings to the surface. <br />3484.1(a)(3) (Drill hole plugging requirements) <br />Each drill hole will be plugged according to the requirements outlined in this <br />section: The hole will be plugged with cement from 50 feet below to 50 feet <br />above any mineably thick coal bed or potentially usable aquifer. <br />The remainder of the hole will be filled with a completion mud (bentonite gel) <br />and /or drill cuttings or cement to within 10 feet of the surface. A 10 ft. thick <br />• cement surface plug will be set, capped with an appropriately marked brass or <br />aluminum monument, at or below ground level. <br />Holes converted from exploration to MDW will be plugged in accordance with <br />the Coal Program Guidance Document as described on page 9. <br />3484.1(a)(4) (Retention of drill and geophysical logs by applicant) <br />The company will retain in its files, all drill and geophysical logs for at least 1 <br />year, and will make them available for inspection by any authorized officer. An <br />authorized officer will keep all un- analyzed drill cores in possession for at least <br />one year if requested, and will be available for inspection. <br />3484.1(a)(5) (Utilizing drill holes as water monitoring wells) <br />The company does not anticipate encountering any significant aquifers during this <br />drilling program. As mentioned in this section, holes will be completed as water <br />monitoring wells if significant flows are encountered and only under the mandate <br />of the regulatory agency. <br />3482.1(a)(3)(viii) - Map of Exploration Area: <br />• A map of the proposed exploration area at a scale of 1:24,000 (1" = 2,000'), <br />showing all drill hole locations, existing roads and access roads to be constructed <br />13 <br />