2011-03-14_REVISION - M1977493 ‎(57)‎

• Permit No: M1977493
• IBM Index Class Name: REVISION
• Doc Date: 3/14/2011
• Doc Name: Exhibit List, Ex. 1-6
• From: Climax
• To: MLRB
• Type & Sequence: AM6
• Media Type: D
• Archive: No

Permit Amendment (AM-06) - Climax Mine
CM0000482
and accumulates in the pit or closed underground workings contacts sulfide bearing material and, in turn,
has the potential to become acidified, thus, meeting the definition of "Acid Mine Drainage" in Rule 1,
Section 1.1 (2).
The acid-forming materials will remain in-situ at the Climax site following final termination of mining and
processing activities. As discussed herein, as long as acidic drainage with the potential to affect the
environment is released from these sources, such drainage will be managed according to the stipulations
and requirements of the appropriate regulatory permits in place at the time.
T-4.1.2.1 Temporary Cessation/Prolonged Lack of Mineral Production
Acidic waters at Climax are regulated under the CDPS Permit as discussed in Section T-2.2. Under
temporary cessation or a prolonged lack of mineral production scenario, mine waters, stormwater, and
seepage waters would continue to be managed, treated and discharged according to the conditions of
this permit.
T-4.1.2.2 Final Closure
Upon final closure and reclamation of the Climax Mine as described in the Permit, technical revisions, and
amendments, impacted waters from the mine, ponded water on the TSFs, seepwater from TSFs and
OSFs, and stormwater will be managed according to conditions of the CDPS Permit. This permit
acknowledges that surface water from Climax must meet effluent limitations prior to discharge.
T-5 Climax Mine Environmental Protection Facilities
An "Environmental Protection Facility" (EPF) is defined in Section 1.1(14) of the Rules as "...a
structure... for control or containment of designated chemicals, acid mine drainage, or toxic or acid-forming
materials..." Except where noted, the EPFs as defined are present and operational at Climax. Some of
the EPFs identified and described herein are under construction or planned for future construction.
Because of Climax's unique geographic position affecting both sides of the Continental Divide and three
distinct and major watersheds (Arkansas River, Eagle River, and Tenmile Creek), the following discussion
of EPFs and controls is organized by watershed. Within the three watersheds, defined EPFs involve (in
no particular order):
¦ Control of run-off that contacts potentially contaminated material;
¦ The process water circuit, which includes process water reclaimed from the TSFs for use in the
mill process, the TSFs and seepwater control systems;
¦ Mine water drainage and control systems;
¦ Designated chemicals used in the milling process; and
¦ Water management and treatment system including water treatment chemicals used therein.
The EPFs discussed throughout this EPP are shown on Figures AM-06-T-01 through AM-06-T-05. In
addition to these governing EPFs, a number of internal systems exist to provide additional control. The
EPFs and internal controls are clarified in Table T-3.
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Exhibit T T-10 May 2010