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The Tłı̨chǫ Government submits final review comments on the Ekati Diamond Mine 2022-2024 Environmental Impact Report, expressing concerns about delayed progressive reclamation at the Pigeon pit and Waste Rock Storage Area, and requesting clarification on reclamation status and timelines amid ongoing financial and operational uncertainty.
The Independent Environmental Monitoring Agency provides final review comments on Burgundy Diamond Mines' 2025 Environmental Impact Report for the Ekati Diamond Mine, finding it unsatisfactory and identifying significant gaps in reporting of environmental monitoring results from 2022-2024, particularly regarding air quality, water quality, fish health, and caribou impacts.
The Independent Environmental Monitoring Agency submits comments on Burgundy Diamond Mines' Fish Response Plan v4.0, raising concerns about elevated mercury and selenium levels in fish tissue downstream of mine facilities and recommending additional monitoring, studies, and stakeholder workshops to address potential risks to fish populations and future Indigenous subsistence fishing.
Land Use Permit inspection report for the Ekati Diamond Mine Misery Development conducted on September 10, 2025, documenting compliance with permit conditions across laydowns, refueling, waste management, and equipment parking areas. The inspector found no concerns, with all operational aspects rated acceptable after minor waste management issues were rectified by Ekati staff.
The Independent Environmental Monitoring Agency reviews the 2024 Ekati Diamond Mine Environmental Agreement Annual Report and finds it satisfactory but the Summary Report unsatisfactory, identifying four key deficiencies: omission of water licence exceedances, insufficient detail on elevated mercury and selenium in fish tissues, missing acid deposition and incinerator stack testing results, and discrepancies in King Pond discharge dates.
The Wek'èezhìı Land and Water Board approved Version 11.0 of the Wastewater and Processed Kimberlite Management Plan for the Ekati Diamond Mine, submitted by Arctic Canadian Diamond Mine Ltd. on May 30, 2025, without requiring public review due to the administrative nature of the updates.
The Independent Environmental Monitoring Agency submits comments on Burgundy Diamond Mines' Waste Rock and Ore Management Plan v13.1, recommending enhanced seepage monitoring at Point Lake using groundwater wells, clarification on trace metals methodology comparisons, specific requirements for monthly visual inspections of the Point Lake Overburden Stockpile, and updated watershed information for Sable facilities.
The Independent Environmental Monitoring Agency reviews and comments on proposed changes to the Aquatic Effects Monitoring Program (AEMP) Version 8.1, supporting the acceleration of sediment and invertebrate sampling to 2025 and the removal of non-lethal Slimy Sculpin sampling in 2025, given that Low Action Level thresholds have been met.
Burgundy Diamond Mines proposes two changes to the Ekati Mine Aquatic Effects Monitoring Program (AEMP) Design Plan Version 8.1 under Water Licence W2022L2-0001: to conduct sediment quality and benthic invertebrate sampling in 17 AEMP lakes in 2025 rather than 2026 to align with MDMER Cycle 2 EEM requirements, and to discontinue non-lethal Slimy Sculpin sampling in 2025 because mine-related effects have now been conclusively demonstrated and sufficient data has been collected.
Environmental inspection report of Burgundy Diamond Mines Limited's Type A Land Use Permit MV2017D0004 at the Misery Surface of Ekati Mine, conducted February 12, 2025, documenting compliance with operating conditions and identifying minor fuel storage and containment issues that were subsequently remediated.
Water Licence Inspection Report for Ekati Diamond Mine (W2022L2-0001) conducted January 13-14, 2025 by GNWT Environment and Climate Change, documenting compliance with water licence requirements across refueling stations, waste management, aviation fuel storage, underground operations, and emergency spill response capacity, with minor maintenance issues identified and addressed.
The Independent Environmental Monitoring Agency submits detailed comments on Burgundy Diamond Mines' Waste Rock and Ore Management Plan (WROMP) Version 13.0, identifying deficiencies in thermal monitoring of waste rock storage areas, seepage evaluation methodologies, geochemical characterization, and closure planning documentation for the Ekati Diamond Mine.
The Wek'èezhìı Land and Water Board's decision letter rejecting Closure and Reclamation Plan Version 3.1 for the Ekati Diamond Mine and establishing requirements for future submissions, including component-specific final CRPs for Pigeon Development, closure criteria advancement, reclamation research reports, and a back-flooding plan for the Pigeon Pit.
The Independent Environmental Monitoring Agency submits final review comments on Burgundy Diamond Mines' 2022 Environmental Impact Report for the Ekati Diamond Mine, rating it as satisfactory overall but recommending improvements in plain language communication, air quality standards documentation, caribou movement monitoring methodology, and dustfall monitoring protocols.
The Independent Environmental Monitoring Agency submits detailed comments on Burgundy Diamond Mines' Wastewater and Processed Kimberlite Management Plan v10.0 for the Ekati Mine, identifying concerns regarding tailings management compliance, water monitoring gaps, pit capacity risks, and closure planning requirements, with specific recommendations for remedial actions.
The Independent Environmental Monitoring Agency submits detailed technical comments on Arctic Canadian Diamond Company's Waste Rock and Ore Management Plan v12.0 for the Ekati Mine, addressing concerns about Point Lake WRSA seepage monitoring, toe berm design, long-term seepage quality prediction, waste rock physical stability inspections, geochemical characterization methods, reference seep monitoring, and the identification and management of seeps of potential concern.
The Independent Environmental Monitoring Agency provides detailed comments on Arctic Canadian Diamond Company Ltd.'s 3-year Seepage Report, addressing concerns about receiving environment definitions, adaptive management response triggers, geochemical characterization, seeps of potential concern identification, reference seep monitoring, and data interpretation issues related to the Ekati Diamond Mine operations.
The Independent Environmental Monitoring Agency provides detailed comments and recommendations on Arctic Canadian Diamond Mine Ltd's Interim Closure and Reclamation Plan Version 3.1 (ICRP v3.1) for the Ekati Diamond Mine, addressing closure principles, long-term liability estimates, water quality criteria, waste rock management, pit lake reclamation, financial security, and adaptive management frameworks.
The GNWT Department of Environment and Climate Change requests information from the Wek'èezhìı Land and Water Board regarding winter road construction costs and operational data from the three Joint Venture Winter Road operators to develop a cost estimate for mine reclamation and closure security purposes.
The Independent Environmental Monitoring Agency submits detailed comments on Arctic Canadian Diamond Company's 2022 Aquatic Effects Monitoring Program Re-evaluation Report and Point Lake Development AEMP Design Plan for the Ekati mine, raising concerns about data analysis methodology, fish sampling protocols, benthic invertebrate classification, metal monitoring in food chains, and nutrient-phytoplankton relationships.