REV104670

• Permit No: C1982056
• IBM Index Class Name: Revision
• Doc Date: 6/13/2005
• Doc Name: Adequacy Review Letter
• From: DMG
• To: Twentymile Coal Company
• Type & Sequence: MR194
• Media Type: D
• Archive: No

STATE OF COLORADO
DIVISION OF MINERALS AND GEOLOGY
Department of Natural Resources
1313 Sherman St., Room 275
Denver, Colorado 80203
Phone: [phone]
FAX: (303)832$106
June 13, 2005
Jerry M. Nettleton
Environmental Coordinator
Twentymile Coal Company
29515 Routt County Road #27
Oak Creek, CO 80467
Re: Foidel Creek Mine, Permit C-1982-056, Minor Revision 193, Technical
Adequacy
Deaz Mr. Nettleton:
COLORADO
D7V ISION OF
MINERALS
GEOLOGY
RECLANATION•NIN ING
SAFETri SCIENCE
sin OWMS
Governor
Russell George
Executive Director
Ronald W. Cattany
Division Director
Natural Resource Truuee
The Division of Minerals and Geology (Division) has reviewed the subject minor
revision for technical adequacy, and has the following concerns. (Minor Revision 193
was submitted by Twentymile Coal Company as Minor Revision 194. It was renumbered,
in sequence of applications received, as Minor Revision 193). Please submit revised
materials to the application in response to these review concerns, with the date they were
revised or resubmitted annotated thereon.
Item 1. With revisions submitted to pages 2.05-45.6 and 2.05-45.7 (03122105) by the
version of 06/08/05, the discussion relating to the Buffalo Forge Fan Silencer was
omitted. If such is not appropriate, please re-instate these descriptions (perhaps by an
added page 2.05-45.8).
Item 2. With the revision submitted to page 2.05-45.7 (03/22/05) by the version of
06/08105, the discussion relating to the NW Mains Ventilation Fan Sound
Deflector/Absorber was omitted. If such is not appropriate, please re-instate this
description (perhaps by an added page 2.05-45.8)
Item 3. With the revision submitted to page 2.05-50 (04/11/00) by the version of
06!08!05, so much as reads "water to the surface facilities. A second centrifugal pump
delivers water to the mine for dust control and fire protection. The second source is a
water line which runs from a Colorado Yampa Coal Company manhole station 220 feet
to a" is missing (see top of unrevised page). Please re-instate the wording at the top of the
revised page as appropriate.
Item 5. With the revision submitted to page 2.05-79 (Mazch 2005) by the version of
06/08/05, the last half of the current page, beginning with "Two water bodies, --" is
Office of ice of Colorado
Mined Land Reclamation Active and Inactive Mines Geologica) Survey