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MCS performed a site investigation in 2001 and 2002
at the former mill at the Elkhorn Mine in the Beaverhead-Deerlodge
National Forest. The investigation was part of the overall
reclamation and restoration of the historic mining town
of Coolidge, in the Pioneer Mountains of southwest Montana.
Reclamation alternatives were prepared following the
risk assessment. During the site investigation, MCS
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characterized mill tailings and unprocessed ore; |
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completed a site investigation report and reclamation investigation report; and |
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presented reclamation alternatives to the client. |
In June 2004, MCS was contracted to perform a
Comprehensive Environmental Response, Compensation and Liability Act time-critical removal action
at
the
Elkhorn Mill. MCS designed and is performing the reclamation at the site. The initial phase
of the project required MCS to design the construction
project including all drawings and specifications. After
completion of the design, MCS began construction which included
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removal and disposal of remaining wood debris; |
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construction of a new cell at the on-site repository; and |
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removal of tailings and waste rock to the repository. |
An engineered cover consisting of a geocomposite liner,
drainage layer with filter fabric, and vegetated soil
cover was constructed over the waste at project completion.
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