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2024-04-02_REVISION - M1977493
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2024-04-02_REVISION - M1977493
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Last modified
4/2/2024 5:53:29 PM
Creation date
4/2/2024 5:34:27 PM
Metadata
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Template:
DRMS Permit Index
Permit No
M1977493
IBM Index Class Name
Revision
Doc Date
4/2/2024
Doc Name
Proposed Revision Materials
From
Climax Molybdenum
To
DRMS
Type & Sequence
TR37
Email Name
DMC
ACY
THM
Media Type
D
Archive
No
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Permit M-1977-493—Climax Mine Technical Revision 37 (TR-37) <br /> reclamation cover material to promote tree growth. The methods of reclamation will follow those outlined for the <br /> Tenmile TSF above. Reclamation cover for the Mayflower TSF reclamation will come from existing stockpiles near <br /> the Mayflower TSF or materials stockpiled elsewhere. A conceptual configuration of the final reclamation <br /> communities is shown in Figure F-06 (Exhibit F) and the final configuration of water handling facilities is shown in <br /> Figure G-07 (Exhibit G). <br /> E-11.4 Dam Reclamation <br /> E-11.4.1 1 Dam and 2 Dam <br /> Reclamation on 1 Dam and 2 Dam is complete. Both dam faces are covered, stabilized, and revegetated. <br /> E-11.4.2 3 Dam and 5 Dam <br /> As of 2024, 3 Dam and 5 Dam have been reclaimed to the extent possible in their current configurations. <br /> However, a slight increase in the height of 3 Dam and a larger increase in the height of 5 Dam are planned as a <br /> part of mineral extraction and production (see Exhibit D: Mining Plan). These new dam lifts will require <br /> reclamation at the completion of dam construction. <br /> A nominal 24 inches of reclamation cover will be applied to the dam faces. Reclamation cover sources will be the <br /> same as those used for Mayflower TSF reclamation with an upland seed mixture used (Section E-7.1.2). <br /> E-11.5 Other Site-Specific Reclamation <br /> There are many areas of the Climax property that have been disturbed during the past 90 years of mining <br /> activities. This reclamation plan outlines specific strategies for anticipated new disturbances; however, there are <br /> many previously disturbed sites that are ancillary and not specifically addressed by this plan. These ancillary <br /> areas will still need to be reclaimed using the best reclamation procedures that have been specified for other sites <br /> but will not be specifically addressed in this plan. Upon the permanent cessation of production operations at the <br /> mine and mill, Climax will reclaim all remaining affected areas not required for continued water management and <br /> monitoring of the site. Additionally, several sites, including Robinson Lake and the mill facility area, will require <br /> site-specific reclamation as outlined below. <br /> E-11.5.1 Robinson Lake <br /> Robinson Lake is currently used for process water storage, but it will be reclaimed after it is no longer needed for <br /> mineral production operations. Specific water management strategies are discussed in Exhibit G: Water <br /> Resources (Section G-5.3—Exhibit G). <br /> E-11.5.2 Roads, Mill Area, and Facilities <br /> Buildings, utilities, processing equipment, and other above-ground structures and materials no longer required <br /> during the post-reclamation period will be demolished after asbestos abatement has been completed. To the <br /> extent possible, the salvageable and recyclable materials obtained from these structures and facilities will be <br /> retrieved and sold or recycled. Material that is not retrievable or practicably recycled will be disposed of by burial. <br /> Buried pipe, wire, and other ancillary belowground infrastructure will be left in place during reclamation if it does <br /> not interfere with regrading activities and is non-toxic or not hazardous. Foundations deeper than 3 feet from the <br /> reclaimed surface that will not interfere with regrading activities will also be left in place. Concrete floors, walls, <br /> equipment pedestals, and foundations that will be within 3 feet of the reclaimed surface will be rubblized or <br /> fractured and buried prior to site regrading. Asphalt may be left in place if it will be covered with at least 24 inches <br /> of reclamation cover during final reclamation grading. If not buried in place, asphalt will be removed from site <br /> surfaces during reclamation. <br /> Following structure demolition, the areas will be regraded as needed to achieve a stable surface. Twenty-four <br /> inches of reclamation cover will be applied to all areas that do not have an existing adequate growth medium. <br /> Reclamation areas will be seeded with the upland standard seed mixture (Section E-7.1.2; Figure F-01, Exhibit F). <br /> Roads not to be retained for an approved post-mining land use will be reclaimed after they are no longer needed <br /> for mineral production and reclamation purposes. Current road locations shown in Figure F-01 (Exhibit F) as <br /> permanent facilities are conceptual and may change. Roads will be graded and filled as necessary to blend with <br /> the adjacent terrain and to meet natural drainage patterns. Following rough grading, reclamation cover will be <br /> Exhibit E E-14 March 2024 <br />
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