2024-05-17_REVISION - M1977493

• Permit No: M1977493
• IBM Index Class Name: Revision
• Doc Date: 5/17/2024
• Doc Name: Exhibit E - Reclamation Plan
• From: Climax
• To: DRMS
• Type & Sequence: TR37
• Email Name: TJ1
• Media Type: D
• Archive: No

Permit M-1977-493—Climax Mine
E-9 Reclamation Schedule
Climax will continue to concurrently reclaim areas that are no longer needed for mineral extraction,
production, or water treatment operations. The schedule of production activities is discussed in Exhibit D: Mining
Plan. Figures G-03 through G-07 (Exhibit G) illustrate the final reclamation design with respect to water
management. Figures F-01 through F-08 (Exhibit F) illustrate the final reclamation design with respect to
reclamation cover placement, which seed mixes to be used on selected areas of the mine, and the post-mining
land usage.
Robinson TSF is no longer in use for tailing deposition and reclamation efforts are ongoing. Some partial
reclamation of the Tenmile TSF may occur during the production period after Tenmile TSF achieves the design
capacity elevation. It is estimated that final reclamation of the Tenmile TSF surface and dam face will occur over a
period of 5 years once reclamation begins. Reclamation of the Mayflower TSF will occur over a period of
approximately 5 years after mineral extraction and production has ended.
Portions of the McNulty and North 40 OSFs may be reclaimed concurrently with mineral production, but final
reclamation will not be completed until they are no longer needed for other purposes. It is estimated that final
reclamation of the McNulty and North 40 OSFs will occur over a period of 5 years. The mill site will likely be the
last area to be reclaimed once these facilities are no longer needed for mineral production or reclamation
purposes. Final reclamation of the mill area will occur over an estimated 5-year period.
E-10 Weed Control
Climax maintains an Integrated Weed Management Plan (IWMP)to comply with the guidelines and requirements
of local, state, and federal government agencies. This IWMP was written in 2005 and updated in 2021 (Habitat
Management, Inc. 2021). Climax complies with weed control regulations, guidelines, and permit stipulations from
the DRMS, Summit and Lake Counties, and the State Land Board. The IWMP will be implemented as written;
however, it will go through periodic reviews and updates.
The IWMP was developed based on a property-wide inspection to assess site conditions, routes of access, weedy
species present, locations of water bodies, potential sources of run-on and runoff, wind conditions, and other
factors relevant to the weed control planning process. The IWMP includes strategies for noxious and pest weed
monitoring and control throughout the Climax Mine property. Additionally, the plan outlines procedures for
pesticide safety, storage, handling, and record keeping.
Common weeds observed and targeted for control at Climax include Canada thistle (Cirsium arvense), yellow
toadflax (Linaria vulgaris), mayweed chamomile (Anthemis cotula), and oxeye daisy (Leucanthemum vulgare).
Since 1999, Climax has employed the services of a licensed commercial pesticide applicator to control these and
other weeds present on the mine site.
E-11 Site-Specific Reclamation Planning
Using the general guidelines for grading, soil placement, soil amendments, and seeding described above, specific
reclamation strategies have been outlined for several areas on the mine. This section includes reclamation plans
for the open pit, McNulty and North 40 OSFs, and the three TSFs. Figures G-03 through G-07 (Exhibit G)
illustrate the final reclamation design with respect to water management. Figures F-01 through F-08 (Exhibit F)
illustrate the final reclamation design with respect to revegetation and which seed mixes to be used on selected
areas of the mine. Figure F-02 (Exhibit F) indicates the approximate location for each stockpile used in the
reclamation process. The four stockpiles located east of State Highway 91 will be used for facilities such as the
Mill, North 40 OSF, and McNulty OSF. Stockpiles located west of the highway are generally insufficient to provide
full cover to their designated areas. Most cover for these areas will originate from proposed Stockpile 30 that will
contain the reclamation cover from the future expansion areas of the Mayflower TSF, as shown in Figure F-02
(Exhibit F). A summary of acres of reclamation cover to be placed for each facility is included in
Exhibit E E-12 May 2024