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Water Licence Inspection Report, Ekati Diamond Mine (Government of the Northwest Territories, Environment and Climate Change, January 2025)
24 January 2025Letter
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.
Regulatory Water Licence Inspections Waste Rock Correspondence
Interim Closure and Reclamation Plan (ICRP) 2024 Annual Progress Report, Appendix C, Effective Neutralization Potential Report, Ekati Diamond Mine (Arctic Canadian Diamond Company, January 2025)
10 January 2025Report
This is a 2024 supplemental report on the Effective Neutralization Potential (ENP) investigation at the Ekati Diamond Mine, prepared by Geosyntec Consultants for Arctic Canadian Diamond Company. The report presents results from extended kinetic testing (up to 162 weeks) and post-kinetic mineralogical analysis to evaluate how site-specific variables such as temperature, mineralogy, particle size, and mineral reactivity affect the acid neutralization capacity of waste rock, with findings that metasediment samples maintained sufficient ENP to neutralize acidity until Week 108, after which pH decreased toward acidic conditions, and that temperature, sulphide oxidation rates, and silicate mineral weathering are key factors influencing ENP at the mine.
Waste Rock Acid Rock Drainage Geochemistry
Waste Rock and Ore Storage Management Plan (WROMP), Version 13.0, Agency Comment Letter, Ekati Diamond Mine (Independent Environmental Monitoring Agency, October 2024)
31 October 2024Letter
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.
Waste Rock Closure & Reclamation Correspondence
Waste Rock and Ore Storage Management Plan (WROMP), Version 13.0, Ekati Diamond Mine (Arctic Canadian Diamond Company, September 2024)
26 September 2024Regulatory Filing
Burgundy Diamond Mines submits Version 13.0 of the Waste Rock and Ore Storage Management Plan (WROMP) for the Ekati Diamond Mine to the Wek'èezhìi Land and Water Board for approval under Water Licence W2022L2-0001, incorporating revisions from prior board decisions and addressing seepage management, geochemical characterization, and monitoring protocols for multiple waste rock storage areas.
Waste Rock Regulatory Acid Rock Drainage
Interim Closure and Reclamation Plan (ICRP) Version 3.1, Reasons for Decision, Ekati Diamond Mine (Wek'èezhìı Land and Water Board, April 2024)
12 April 2024Letter
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.
Closure & Reclamation Regulatory Water Quality Correspondence Traditional Knowledge
Waste Rock and Waste Rock Storage Area Seepage Survey Report, Ekati Diamond Mine (Arctic Canadian Diamond Company, April 2024)
1 April 2024Report
This 2023 Waste Rock and Waste Rock Storage Area Seepage Survey Report documents the geochemical monitoring of waste rock and coarse kimberlite rejects, and seepage quality monitoring at multiple waste rock storage areas at the Ekati Diamond Mine. The report identifies 12 seeps of potential concern based on exceedances of effluent quality criteria or 95th percentile historical thresholds, with detailed temporal trend analysis and adaptive management recommendations for each waste rock storage area.
Geochemistry Waste Rock Monitoring
Wastewater and Processed Kimberlite Management Plan (WPKMP), Version 10, Reasons for Decision, Ekati Diamond Mine (Wek'èezhìı Land and Water Board, March 2024)
1 March 2024Regulatory Filing
The Wek'èezhìı Land and Water Board issued a decision on March 1, 2024, rejecting Version 10 of the Wastewater and Processed Kimberlite Management Plan (WPKMP) submitted by Arctic Canadian Diamond Company Ltd. and requiring revised versions to address uncaptured runoff from the Point Lake Development, contingency planning for wastewater management at the King Pond Settling Facility, and various technical clarifications.
Regulatory Water Licence Wastewater
Wastewater and Processed Kimberlite Management Plan (WPKMP), Version 10, Agency Comments, Ekati Diamond Mine (Independent Environmental Monitoring Agency, January 2024)
31 January 2024Letter
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.
Wastewater Kimberlite Tailings Water Quality
Waste Rock and Ore Storage Management Plan (WROMP), Version 12.0, Reasons for Decision, Ekati Diamond Mine (Wek'èezhìı Land and Water Board, January 2024)
31 January 2024Regulatory Filing
The Wek'èezhìı Land and Water Board approved Version 12.0 of the Waste Rock and Ore Management Plan (WROMP) for the Ekati Diamond Mine on January 31, 2024, with conditions requiring submission of Version 13.0 within 90 days of Seepage Response Framework approval and increased seep screening frequency until the framework is implemented.
Waste Rock Regulatory Water Licence
3-Year Waste Rock Storage Area Seepage Program Report, Reasons for Decision, Ekati Diamond Mine (Wek'èezhìı Land and Water Board, January 2024)
31 January 2024Regulatory Filing
The Wek'èezhìı Land and Water Board approved Arctic Canadian Diamond Company's 2022 3-Year Waste Rock Storage Area Seepage Survey Report on January 31, 2024, with requirements for future improvements and development of a Seepage Response Framework to address concerns about seep screening criteria, adaptive management responses, and EQC exceedances.
Waste Rock Regulatory Water Quality
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
Wastewater and Processed Kimberlite Management Plan (WPKMP), Version 10.0, Ekati Diamond Mine (Arctic Canadian Diamond Company, December 2023)
22 December 2023Regulatory Filing
Burgundy Diamond Mines submits Version 10.0 of the Ekati Diamond Mine Wastewater and Processed Kimberlite Management Plan to the Wek'èezhìi Land and Water Board, addressing requirements of water licence W2022L2-0001 and incorporating Point Lake Development as a new mining operation. The plan describes management of minewater, sewage, and fine processed kimberlite across multiple containment facilities and operational sites, with updated monitoring and adaptive management procedures.
Wastewater Waste Rock Kimberlite Tailings
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
Waste Rock and Ore Storage Management Plan (WROMP), Version 12.0, Part 1, Ekati Diamond Mine (Arctic Canadian Diamond Company, November 2023)
9 November 2023Regulatory Filing
Burgundy Diamond Mines submits Version 12.0 of the Waste Rock and Ore Storage Management Plan (WROMP) for the Ekati Diamond Mine to the Wek'èezhìi Land and Water Board for approval under Water Licence W2020L2-0004. The submission incorporates the Point Lake Project, addresses Board decisions from previous approvals, and includes updated geochemical characterization, seepage management protocols, and adaptive management procedures for waste rock storage areas.
Waste Rock Acid Rock Drainage Geochemistry
Annual Geotechnical Inspection Report, Ekati Diamond Mine (Arctic Canadian Diamond Company, October 2023)
24 October 2023Report
Burgundy Diamond Mines submits the 2023 Annual Geotechnical Inspection Report for the Ekati Diamond Mine to the Wek'èezhìi Land and Water Board as required by Water Licence W2020L2-0004. Tetra Tech inspected 14 water control structures from July 14-16, 2023, finding no visible signs of cracking or distress indicating instability, with recommendations for maintenance and monitoring of specific structures including Intermediate Dike C erosion repairs and King Pond Dam water elevation management.
Regulatory Water Licence Monitoring Wastewater Closure & Reclamation
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
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

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472 documents · Page 2 of 24