2016-01-19_REVISION - C1982056 ‎(4)‎

• Permit No: C1982056
• IBM Index Class Name: Revision
• Doc Date: 1/19/2016
• Doc Name: Adequacy Review No. 1
• From: DRMS
• To: Twentymile Coal, LLC
• Type & Sequence: MR294
• Email Name: JLE
• Email Name: DIH
• Media Type: D
• Archive: No

January 19, 2016
COLORADO
Division of Reclamation,
Mining and Safety
Dcpat t ncW of Natur,rt Re r. wccs,
1313 She rrnan Street., Roorn 2.11"
Denver, CO 802.03
Jerry Nettleton
Twentymile Coal, LLC.
29515 Routt County Road 27
Oak Creek, CO 80467
RE: Foidel Creek Mine; C-1982-056; 6MN Compressor Building Modification
Minor Revision No. 294 (MR294) Adequacy Review No. 1
Dear Mr. Nettleton,
The Colorado Division of Reclamation, Mining and Safety (Division) has reviewed the above referenced
revision. The following items will need to be addressed prior to the approval of the revision.
Twentymile Coal, LLC. (TC). proposes to replace or add pages 2.05-105.1, 106, 106.1, 106.2,
106.3 and 106.4. The proposed revised pages do not follow the currently revised text. The
sections are reorganized and would result in duplicate paragraphs from text preceding the
proposed revised pages in some cases. The section proposed to be revised with MR294 does not
appear to have been revised except for possibly changing of the font size. Please review the
currently approved sections and make proper revisions to the text so that the pages are paginated
correctly and follow each other with the preceding and subsequent pages. Please insure currently
approved text unrelated to the revision is not eliminated or duplicated. The currently approved
text can be viewed online on the Division's website.
2. Some of the dimensions shown on the proposed revised plan "6MN Air Compressor Building
North and South Pad Expansions Plan and Side Views" submitted to be included in Exhibit 49A
are too small to read. Please submit a revised plan with legible dimensions.
The cost estimate provided with the revision indicates the equipment removal cost for this project
are already included in the current cost estimate for the 6MN installation. The Division reviewed
the cost estimate and this does not appear to be case. Please provide the following information
for the cost estimate and update page 2.05-45.12 to include this information.
a. Please provide the dimensions of the two new compressors.
b. Please provide the dimensions of the two dryers.
c. Please provide the dimensions of the compressor after coolers.
The Division is required to issue a propose decision by January 29, 2016. If you need additional time to
address the Division's concerns please request an extension of the decision date. If you have any
questions feel free to contact me at [phone], extension 8120.
1313 Sherman Street, Room 215, Denver, CO 80203 P 303.866.3567 F 303.832.8106 http://mining. state. co. us
John W. Hickentooper, Governor I Mike King, Executive Director I Virginia Brannon, Director