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821 documents · Page 3 of 42

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Interim Closure and Reclamation Plan (ICRP) Annual Progress Report, Appendix H, Ekati Diamond Mine (Arctic Canadian Diamond Company, January 2024)
31 January 2024Report
Burgundy Diamond Mines' 2022-2023 Annual Closure and Reclamation Progress Report documents reclamation research, activities, and closure planning at the Ekati Diamond Mine, including Long Lake Containment Facility stabilization, vegetation monitoring, Old Camp reclamation, Pigeon Pit closure design, and updated reclamation security holdings of $313.3 million as of January 31, 2024.
Closure & Reclamation Closure Plan Water Quality Regulatory
Environmental Impact Report 2022, Ekati Diamond Mine (Arctic Canadian Diamond Company, December 2023)
22 December 2023Report
The 2022 Environmental Impact Report for the Ekati Diamond Mine documents environmental activities and monitoring results from 2019 to 2021, fulfilling requirements of the 1997 Environmental Agreement between Arctic Canadian Diamond Company Ltd. (operator) and the governments of Canada and the Northwest Territories. The report assesses effects on four valued ecosystem components (air, land, water, wildlife), identifies 21 key environmental risks, and describes management practices and adaptive strategies employed to minimize the mine's environmental footprint.
Environmental Agreement Development Plans Monitoring
Waste Rock and Ore Storage Management Plan (WROMP), Version 12.0, Comments, Ekati Diamond Mine (Independent Environmental Monitoring Agency, December 2023)
20 December 2023Letter
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.
Waste Rock Acid Rock Drainage Water Quality
Comments on 2022 3-Year Seepage Report, Ekati Diamond Mine (Independent Environmental Monitoring Agency, December 2023)
11 December 2023Letter
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.
Waste Rock Water Quality Effluent Quality Criteria
Comments on Interim Closure and Reclamation Plan (ICRP) Version 3.1, Ekati Diamond Mine (Independent Environmental Monitoring Agency, November 2023)
29 November 2023Letter
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.
Closure & Reclamation Correspondence Post-Closure Monitoring
Surveillance Network Program (SNP) Monthly Report, Ekati Diamond Mine (Arctic Canadian Diamond Company, November 2023)
1 November 2023Report
Burgundy Diamond Mines' November 2023 Surveillance Network Program (SNP) monthly report for water licence W2022L2-0001, submitted to the Wek'èezhii Land and Water Board, documenting water volumes, flow measurements, lake elevations, minewater management, sewage treatment, waste rock disposal, and comprehensive water quality analytical results from five sampling events.
SNP Water Quality Water Licence
Surveillance Network Program (SNP) Monthly Report, Ekati Diamond Mine (Arctic Canadian Diamond Company, October 2023)
1 October 2023Report
Burgundy Diamond Mines' October 2023 monthly Surveillance Network Program (SNP) report for water licence W2020L2-0004, submitted to the Wek'èezhii Land and Water Board, documenting water quality monitoring, flow measurements, and operational data from the Ekati Diamond Mine including field parameters, analytical results from 14 water samples, and certificates of analysis from Bureau Veritas.
SNP Water Quality Monitoring
Spills and Non-Compliances Log 2023, Appendix C, Ekati Diamond Mine (Arctic Canadian Diamond Company, September 2023)
22 September 2023Report
This document contains two main sections: (1) a comprehensive log of 2023 spills and non-compliances at the Ekati Diamond Mine, detailing 20+ incidents involving hydraulic failures, human error, and equipment failures with volumes ranging from <10 mL to 1000 L; and (2) a regulatory letter from Burgundy Diamond Mines to the Wek'èezhii Land and Water Board reporting a water quality exceedance at King Pond Settling Facility discharge to Cujo Lake in August 2023, with TSS and total copper levels exceeding maximum concentrations, accompanied by detailed laboratory analysis certificates.
Regulatory Wastewater Water Quality Waste Rock
Surveillance Network Program (SNP) Monthly Report, Ekati Diamond Mine (Arctic Canadian Diamond Company, September 2023)
1 September 2023Report
Burgundy Diamond Mines' September 2023 Surveillance Network Program monthly report for Water Licence W2020L2-0004 documents water quality monitoring, discharge volumes, and non-compliance issues including exceedance of King Pond discharge limits and Falcon Lake withdrawal restrictions. The report includes detailed field parameters, analytical results, and bioassay data from 20 water samples collected across multiple monitoring stations at the Ekati Diamond Mine.
SNP Water Licence Water Quality
Waste Rock Storage Area Seepage Program, 3-Year Report, Part 1, Ekati Diamond Mine (Arctic Canadian Diamond Company, August 2023)
11 August 2023Report
This 2022 three-year Waste Rock and Waste Rock Storage Area Seepage Survey Report for the Ekati Diamond Mine documents monitoring of seepage quality and waste rock geochemistry as required by Water Licence W2020L2-0004. The report identifies 13 seeps of potential concern in 2022 across multiple waste rock storage areas and provides detailed interpretation of temporal trends in seepage chemistry and waste rock characteristics since project inception.
Waste Rock Acid Rock Drainage Water Quality
Interim Closure and Reclamation Plan (ICRP) Version 3.1, Part 1, Ekati Diamond Mine (Arctic Canadian Diamond Company, August 2023)
9 August 2023Regulatory Filing
Arctic Canadian Diamond Company submits Interim Closure and Reclamation Plan (ICRP) Version 3.1 for the Ekati Diamond Mine to the Wek'èezhìi Land and Water Board, updating the 2018 version to incorporate the 2022 life-of-mine plan, Board-approved closure objectives, new research findings, and stakeholder feedback, with operations scheduled to continue until 2029.
Closure & Reclamation Regulatory Water Quality Traditional Knowledge Development Plans
Surveillance Network Program (SNP) Monthly Report, Ekati Diamond Mine (Arctic Canadian Diamond Company, August 2023)
1 August 2023Report
Burgundy Diamond Mines' August 2023 Surveillance Network Program monthly report for water licence W2020L2-0004, documenting water quality sampling results, flow measurements, and operational data. The report identifies exceedances of total suspended solids and total copper at station 1616-43 on August 22, 2023, with notification sent to GNWT Lands Inspector.
SNP Water Quality Water Licence
Environmental Agreement and Water Licence Annual Report 2022, Regulatory Comments, Ekati Diamond Mine (Independent Environmental Monitoring Agency, July 2023)
17 July 2023Regulatory Filing
This document comprises regulatory comments on the 2022 Ekati Diamond Mine Environmental Agreement and Water Licence Annual Report from multiple government agencies, Indigenous governments, and the Independent Environmental Monitoring Agency. The reviews identify deficiencies including unreported Point Lake dewatering exceedances and effluent quality criteria violations, along with recommendations for improved reporting on air quality monitoring, wildlife surveys, dust suppression, and water management.
Regulatory Water Quality Effluent Quality Criteria Monitoring
Surveillance Network Program (SNP) Monthly Report, Ekati Diamond Mine (Arctic Canadian Diamond Company, June 2023)
1 June 2023Report
Burgundy Diamond Mines' Surveillance Network Program (SNP) monthly report for June 2023 under Water Licence W2020L2-0004, submitted to the Wek'èezhii Land and Water Board. The report documents water quality monitoring, flow measurements, discharge volumes, and analytical results from 22 samples collected at various monitoring stations around the Ekati Diamond Mine, including an incident of elevated turbidity in King Pond that resulted in temporary suspension of discharge to Cujo Lake.
SNP Water Quality Water Licence
Aquatic Effects Monitoring Program (AEMP) 2022 Re-evaluation Report and Point Lake AEMP Design, Reasons for Decision, Ekati Diamond Mine (Wek'èezhìı Land and Water Board, May 2023)
23 May 2023Regulatory Filing
The Wek'èezhìı Land and Water Board approved the 2022 AEMP Re-evaluation Report and AEMP Design Plan Version 8.0 with required revisions, and approved the Point Lake AEMP Design Plan Version 1.0 for integration into the site-wide plan. The Board rejected Arctic's recommendations to remove zinc from water and sediment quality monitoring, required expanded non-lethal Slimy Sculpin sampling, and directed clarifications on uranium benchmarks and Response Framework procedures.
Aquatic Effects Monitoring (AEMP)Aquatics Water Quality
Waste Rock Storage Area (WRSA) 3-Year Seepage Program Report, Part 2, Ekati Diamond Mine (Arctic Canadian Diamond Company, May 2023)
1 May 2023Report
This 2022 3-Year Waste Rock and Waste Rock Storage Area Seepage Survey Report documents environmental monitoring results from the Ekati Diamond Mine, analyzing seepage chemistry from multiple waste rock storage areas (Fox, Misery, Lynx, Panda, and Koala WRSAs) to assess water quality, metal/metalloid concentrations, and potential environmental concerns from 2002-2022.
Waste Rock Geochemistry Monitoring
Waste Rock Storage Area 3-Year Seepage Program Report, Part 3, Ekati Diamond Mine (Arctic Canadian Diamond Company, May 2023)
1 May 2023Report
Laboratory analytical results from Bureau Veritas for water samples collected from waste rock storage area seepage at Ekati Diamond Mine in June 2022, including chemical analyses, toxicology bioassays, and quality assurance documentation for three seepage monitoring stations.
Waste Rock Water Quality Monitoring
Waste Rock Storage Area (WRSA) 3-Year Seepage Program Report, Part 4, Ekati Diamond Mine (Arctic Canadian Diamond Company, May 2023)
1 May 2023Report
This 2022 3-Year Waste Rock and Waste Rock Storage Area Seepage Survey Report presents temporal trend graphs (1999–2022) for multiple chemical parameters measured in seepage from the Panda/Koala and SW waste rock storage areas at Ekati Diamond Mine, including total and dissolved concentrations of metals, nutrients, and suspended solids.
Waste Rock Geochemistry Monitoring
Surveillance Network Program (SNP) Monthly Report, Ekati Diamond Mine (Arctic Canadian Diamond Company, May 2023)
1 May 2023Report
Arctic Canadian Diamond Company's May 2023 Surveillance Network Program monthly report for Water Licence W2020L2-0004, submitted to the Wek'èezhìi Land and Water Board, documenting water sampling results, flow measurements, containment facility volumes, minewater pumping quantities, and comprehensive analytical data for multiple monitoring stations across the Ekati Diamond Mine.
SNP Water Quality Monitoring
Surveillance Network Program (SNP) Monthly Report, Ekati Diamond Mine (Arctic Canadian Diamond Company, April 2023)
1 April 2023Report
Arctic Canadian Diamond Company's April 2023 monthly Surveillance Network Program report for Water Licence W2020L2-0004, submitted to the Wek'èezhìi Land and Water Board, documenting water volumes, lake elevations, minewater management, sewage treatment, ore and waste rock production, and detailed water quality analytical results from two sampling events.
SNP Water Quality Monitoring Regulatory

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821 documents · Page 3 of 42