2012-07-19_REVISION - M1977493

• Permit No: M1977493
• IBM Index Class Name: Revision
• Doc Date: 7/19/2012
• Doc Name: ADEQUACY REVIEW
• From: DRMS
• To: CLIMAX
• Type & Sequence: TR22
• Email Name: ECS
• Media Type: D
• Archive: No

DIVISION OF RECLAMATION, MINING AND SAFETY
Department of Natural Resources
1313 Sherman St., Room 215
Denver, Colorado 80203
Phone: [phone]
FAX: [phone]
July 19, 2012
Climax Mine
Attn: Mr. Ray Lazuk
Highway 91
Climax, CO 80429
STATE OF COLORADO
COLORADO
D I V I S ION OF
RECLAMATION
MINING
SAFETY
John W. Hickenlooper
Governor
Mike King
Executive Director
Loretta Pineda
Director
RE: File M- 1977 -493; Climax Mine; Technical Revision 22 (TR22) — North 40 and McNulty OSF Design and
Monitoring Plan and Modification to Ceresco Ridge Haul Road Annual Alignment Adequacy Review
Mr. Lazuk:
The Division of Reclamation, Mining and Safety received Technical Revision 22 — North 40 and McNulty OSF
Design and Monitoring Plan and Modification to Ceresco Ridge Haul Road Annual Alignment for the Climax
Mine on June 1, 2012. This TR has been submitted to satisfy the conditions placed on the MLRB approval of
AM06. The decision date for this revision has been extended to July 30, 2012. Please be advised that if you are
unable to satisfactorily address any concerns identified in this review before the decision date, it will be your
responsibility to request an extension of the review period. If there are outstanding issues that have not been
adequately addressed prior to the end of the review period, and no extension has been requested, the Division
must deny this revision.
DRMS has completed the initial adequacy review of TR22. As with most revisions of this scope and complexity,
there are a several items that will require clarification of the existing information or submittal of additional
information. Several, if not all, of these items were discussed in a very productive July 17"' 2012 meeting
between Climax, Golder and DRMS.
DRMS anticipates that as mining continues at this site that development of OSFs will evolve based on the
implementation of additional items and best practices, the collection of additional data, field conditions, and
ongoing discussions between DRMS and Climax. Although Climax is certainly aware, DRMS would also like to
reiterate at this time that, as EPF's, the design and construction of these facilities is subject to all the requirements
of Sections 7.3 and 7.4 of the Hard Rock/Metals Mining Rule. The annual report for the Climax mine will also be
required to include at least annual stability monitoring/certification by a qualified engineer for all operating
OSF's. DRMS has no objections /issues with the proposed realignment of the Ceresco ridge haul road as proposed
in TR22.
Tie -in to existing OSF(s)
How will Climax "tie -in" the proposed OSF construction and water management plans with the existing North 40
and McNulty Gulch OSFs? Please clarify with appropriate text/maps how drainage from the existing OSFs will
be captured and integrated into the proposed operational OSF design. Has it been demonstrated that the existing
OSF features are stable enough to provide a proper foundation for the proposed operational and final
configurations?
Office of Office of
Mined Land Reclamation Denver • Grand Junction • Durango Active and Inactive Mines