Share and view ideas: Ekati Mine Project

Current status: Closed

Consultations are from May 20 to July 22.

Environment and Climate Change Canada (ECCC) is seeking comments on proposed amendments to Schedule 2 of the Metal and Diamond Mining Effluent Regulations and on proposed compensation measures.

ECCC is also consulting on Streamlining the Approvals Process for Metal Mines with Tailings Impoundment Areas to reduce approval timelines of the regulatory amendments. Subject to Governor in Council approval, these proposed changes would not need to be pre-published in Part I of the Canada Gazette.


The Ekati Mine is an active diamond mine owned and operated by Arctic Canadian Diamond Company Ltd (the proponent). It is located in the Lac de Gras region of the Northwest Territories, about 300 kilometres northeast of Yellowknife.

In 2018, the new Metal and Diamond Mining Effluent Regulations (MDMER) came into force to include diamond mines.
Until 2018, diamond mines were not subject to the previous Metal Mining Effluent Regulations (MMER). The MMER did not include provisions to authorize the use of waters frequented by fish for the disposal of mine waste. Before 2018, Ekati Mine was authorized to use three water bodies to manage its waste. This authorization was from the Department of Fisheries and Oceans, under section 35 of the Fisheries Act. The authorization required the proponent develop and implement plans to offset the destruction of fish habitat from mine waste management activities.

To comply with the new MDMER from 2018, the Ekati Mine is required to list these three water bodies in Schedule 2 of the MDMER. To do so, the proponent must justify its continued use of the three water bodies for mine waste management. It is proposing to use the existing compensation from the Fisheries Act authorization as justification.

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Related information

Contact us

Environment and Climate Change Canada
Mining Section
Mining and Processing Division
351 boul. St-Joseph, 11th floor
Gatineau, QC  K1A 0H3

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