British Columbia Mine Reclamation Symposium

Abandoned underground mine remedy evaluation and remedial design Captain Jack Mill Superfund Site, Colorado Bazin, A.S.


This paper is focused on the methods and objectives of the pre-design investigation and the elements of the design used to provide a long-term, low-maintenance remedy under difficult site conditions at a remote, mountainous site. The paper describes the use of advanced geophysical methods such as surface and downhole electrical resistivity tomography, solar powered monitoring systems, and remote data acquisition and communications. The paper will also discuss the comparative benefits and disadvantages of the active and passive treatment systems evaluated, including a limestone bed, caustic injection, and a sulfate-reducing bioreactor. Remedy design is nearly complete and installation is tentatively slated for the summer of 2014.

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