REV10759

• Permit No: C1982056
• IBM Index Class Name: Revision
• Doc Date: 8/25/2006
• Doc Name: Adequacy Review Letter
• From: DRMS
• To: Twentymile Coal Company
• Type & Sequence: TR54
• Media Type: D
• Archive: No

STATE OF COLORADO
DIVISION OF RECLAMATION, MINING AND SAFETY
Department of Natural Resources
1313 Sherman St., Room 215
Denver, Colorado 80203 C O L O R A D O

Phone: [phone] DIVISION OF
RECLAMATION
FAX: [phone] MINING
- SL-
SAFETY
August 25, 2006 sill Owens
Governor
Jerry M. Nettleton Russell George
EnVliOnmental COOYdInatOT Executive Director
Twent mile Coal Com an Ronald W. Cottony
Y P Y Division Director
29515 ROUtt County Road #27 Natural Resource Trustee
Oak Creek, CO 80467
Re: Foidel Creek Mine, Permit C-1982-056
Technical Revision 6-54 (TR-54)
Technical Adequacy
Dear Mr. Nettleton:
The Division of Reclamation, Mining and Safety (Division) has completed a review of
the subject Technical Revision application (TR) for adequacy. Responses from the public
to your newspaper advisement were due at the Division on August 9, 2006. Responses to
completion letters from the Division to interested persons and agencies were due at the
Division on August 5, 2006. Please respond to the following adequacy items, as indicated
in bold.
Item 1. Rule 2.05.2(2)(6). The reclamation cost estimate provided in the application is
less than the Division estimate. Please find attached a Division interoffice memorandum
to Byron Walker from Janet Binns dated 8/23/2006. Please reconcile the difference, and
submit a revised estimate, or accept the Division estimate, for inclusion in the
application.
Item 2. Rules 4.03.1(1)(a), 4.03.1(1)(6), 4.03.1(3)(d)(ii), 4.03.1(3)(e)(x), 4.03.1(4)(b)(ii).
No description of temporary sediment control measures were found in the PAP for the
proposed work. Please incorporate the use of temporary sediment control measures
(sediment booms, silt fences, mulching, etc.) until the disturbed surfaces are
stabilized.
Item 3. Rule 4.03.1(3)(a)(iii) No pitch grade exceeds 15%; but, as recognized on page
2.05-70 of the application, pitch grades exceed 10 percent for 500 feet. In support of the
statements regarding temporary summer and fall use (line 11, page 2.05-70), please
include a thorough analytical demonstration by a qualified registered professional
engineer that such alternatives will be as environmentally sound as those resulting
from haul roads complying with the requirements of 4.03.1(3) and that the
alternatives meet such other criteria as are necessary to achieve reclamation in
Office of Office of
Mined Land Reclamation Active and Inactive Mines