Summary of the Equity Silver Mine 2000 Security Review (IEMA, June 2001)
This security review report evaluates the financial and environmental requirements for reclamation and long-term management of the closed Equity Silver Mine in British Columbia, calculating a net present value liability of $23.55 million based on projected lime treatment costs, operating expenses, and periodic maintenance through 2070. The review establishes operational protocols for acid rock drainage treatment, cost triggers for security adjustments, and monitoring requirements to manage environmental risks including contaminated drainage and aquatic ecosystem impacts.
- Date
- 2001-06-22
- Document type
- report
- Parties
- Placer Dome Inc., Placer Dome Canada, Equity Division, Ministry of Water, Land and Air, Ministry of Energy and Mines, Office of the Wet'suwet'en, District of Houston, Northern Ecology Action Committee, Equity Mine Public Advisory Committee
- Locations
- Equity Silver Mine, Houston, Waterline Pit, Southern Tail Pit, Main Zone Pit, Bessemer Dump, Foxy Creek, Maxan Creek, Bulkley Lake, Bessemer-Buck Creek, Upper Bulkley River, Buck Creek, Goosly Lake, Berzelius Diversion, British Columbia
- Parameters
- acid rock drainage, water quality, dissolved metals, ammonium, dissolved copper, dissolved zinc, cadmium, pH, lime consumption, infiltration, precipitation, groundwater movement, waste rock geochemistry, aquatic resources, benthic communities, pelagic communities, fish populations
- Pages
- 11
Original document
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