Colomac Mine (Remediation Complete)
Colomac is a former gold mine located 220 km north of Yellowknife. AANDC assumed responsibility for this site in 1999.
Numerous human health and safety, and environmental risks exist at this site due to the presence of both chemical and physical hazards. Chemical hazards include contaminated tailings, hydrocarbon spills, and hazardous materials within the mill complex itself. Physical hazards are associated with open pits, quarries, waste rock piles, buildings, and other infrastructure.
Remediation activities have been underway since 2005. These include remediation of hydrocarbon-impacted soil, treatment of hydrocarbon-impacted water, waste consolidation, non-hazardous landfill capping, quarry remediation, waste rock berm and caribou ramp construction. Project oversight and support for these activities is provided by the Colomac Advisory Team (CAT) which includes AANDC and PWGSC staff as well as a representative of the prime consultant for the site.
The Tlicho have been longstanding partners with the Northern Contaminated Sites Program on this site, including development of the remediation plan to ensuring that approved activities are carried out effectively. Their strong involvement will continue as planned remediation activities are completed, a close-out plan is developed and the project moves into extended monitoring.
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