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Jennifer Sekulski-Barton <br />0:5. Colowyo Coal Company <br />5731 State Highway 13 <br />O Meeker, CO 81641 <br />r?•F <br />0 1 February 2011 <br />Mr. James R. Stark <br />Environmental Protection Specialist <br />Colorado Division of Reclamation, Mining and Safety <br />Department of Natural Resources <br />1313 Sherman Street, Room 215 <br />Denver, CO 80203 <br />Rece ?p^ <br />F4.cr 0,> <br />Dil's/on ?.2®,, <br />n'n9 3?Aa <br />?Y ' <br />RE: Technical Revision No. 87, East Pit Sediment Control Structures and Spoil <br />Grading Map Update, Colowyo Coal Mine, Permit No. C-1981-019.- Changes Pursuant <br />to CDRMS SAR letter January 11, 2011 <br />Dear Mr. Stark, <br />Colowyo received the Division's Secondary Adequacy comments for TR-87 on 14 January <br />2011 and has the following comments and responses: <br />Division's Comment <br />Rule 2.10 -Maas and Plans <br />3. This item remains outstanding. Map 12- Hydrology, South Area, shows <br />reclamation that has been completed at the Colowyo Mine as it relates to backfilling and <br />grading and post-mining channel construction. Given the ongoing and continual nature of <br />the reclamation at the Colowyo Mine, this map will never be a completely accurate <br />representation of what is actually reclaimed on the ground except for at one specific point in <br />time. The map does, however, need to be accurate for any given reclamation year. The <br />Division has requested that this map be submitted as a Minor Revision to the permit each <br />spring to show the reclamation that has occurred to date. In the 8 November 2010 <br />responses, Colowyo states its desire to submit the updated Map 12 with the Annual <br />Reclamation Report. Submitting the revised Map 12 with the Annual Reclamation Report <br />would not provide for a mechanism to incorporate the revised map into the permit <br />document, as the Annual Reclamation Report is a report that, while a part of the record, is <br />not a part of the permit document. A revised copy of Map 12 will need to be submitted as a <br />Minor Revision to the permit each spring. <br />Colowyo's Response: <br />Colowyo will comply with the Division's request for a new Minor Revision to update Map 12 <br />each spring. <br />Colowyo Coal Company, L.P. • 5731 State Highway 13 • Meeker, CO 81641 <br />T + 1 970 824 1529 • F +1 970 824 1598 • http://prospect.riotinto.org/irj/portal