2010-03-29_REVISION - C1981019 (3)

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By reviewing the above data, no idealized or generalized columnar section of the Collom can be thus prepared above what has already been presented in the generalized Colowyo Stratigraphic column. 7. Pursuant to Rule 2.04.6(2)(b)(i)(B), please provide the logs of drill holes and test borings showing the lithologic characteristics and thickness of each stratum and each coal seam within the Collom project area. This information should be provided down to and including either the stratum immediately below the lowest coal seam to be mined or any aquifer below the lowest coal seam to be mined which may be affected by mining, whichever is deeper. Colowyo Response: This information is now included as Exhibit 6Item I& 8. Overburden chemical analysis was provided in Exhibit 6, Item 9. However, there were no site-specific coal analyses provided. On page 24, Colowyo states, "The analyses of the coal seams to be mined are considered confidential and are provided in the original permit application and will be provided to the Colorado Division of reclamation, Mining and Safety under separate cover." Pursuant to Rule 2.04.6(2)(b)(i)(E), please provide analyses of the coal seams to be mined in Collom, including but not limited to an analysis of the sulfur, pyrite, and marcasite content from the proposed Collom area. • Colowyo Response: The information has been submitted under separate cover with this package. Rule 2.04.7 - Hydrology Description 9. Baseline groundwater monitoring was last conducted in 2004 to 2006. Pursuant to Rule 2.04.7(1)(iii), Colowyo will be required to reinitiate groundwater monitoring one year prior to commencing the mining operations associated with the Collom proj ect. Colowyo Response: Dually noted. Rule 2.05.3 - Operations Plan 10. Colowyo states that the development of Collom will require the construction of new facilities as shown on Map 22B, but no details are provided. Rules 2.05.3(3) - Mine Facilities and Rule 4.04, Support Facilities, require a description of the mine support facilities that will be constructed in the Collom area. The description should include all of the buildings that are shown on Map 22B - Structures and Facilities and other support facilities listed in Rules 2.05.3 and 4.04. Pursuant to Rule 2.05.3(3)(a), the information needs to include "a description, plans and drawings describing the location, construction, modification, use, maintenance and removal of mine support Colowyo Mine C-1981-019 page 4 of 16 25 March 2010 Permit Revision 03 - Collom Permit Expansion