Water Licence

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Aquatic Effects Monitoring Program (AEMP) Fish Response Plan, Version 1.2, Ekati Diamond Mine (Dominion Diamond, June 2018)
25 June 2018Report
Dominion Diamond Ekati ULC submits Version 1.2 of the Response Plan for Fish to the Wek'èezhìi Land and Water Board, addressing low action level exceedances for antimony, molybdenum, selenium, uranium, and EROD activity in fish tissue detected in the 2012 Aquatic Effects Monitoring Program. The plan proposes low, medium, and high action levels with rationale for response actions to manage mine-related changes in fish tissue contaminants while maintaining protection of the aquatic receiving environment.
Aquatics Aquatic Effects Monitoring (AEMP)Water Quality
Waste Rock and Ore Storage Management Plan (WROMP), Version 8.0, Board Directive and Reasons for Decision, Ekati Diamond Mine (Wek'èezhìı Land and Water Board, May 2018)
22 May 2018Regulatory Filing
The Wek'èezhìi Land and Water Board approved Version 8.0 of Dominion Diamond Ekati's Waste Rock and Ore Storage Management Plan and Version 2.0 of the Jay Road Construction Plan on May 17, 2018, with required revisions addressing uncertainties in the geochemical characterization of diabase rock discovered in the Lynx Pit and its suitability for construction use. The Board mandated a risk mitigation program including rock sampling, seepage monitoring, and additional geochemical analysis before diabase can be used as a construction material.
Waste Rock Regulatory Geochemistry
Three Year Seepage Report, Board Directive and Reasons for Decision, Ekati Diamond Mine (Wek'èezhìı Land and Water Board, January 2018)
25 January 2018Regulatory Filing
The Wek'èezhìi Land and Water Board approved Dominion Diamond Ekati ULC's 2016 Three-Year Seepage Survey Report (2014-2016) on January 25, 2018, and issued directives requiring submission of revised monitoring plans, waste rock management updates, and closure risk assessments with the 2017 Annual Seepage Report.
Regulatory Water Licence Waste Rock
Waste Rock and Ore Storage Management Plan (WROMP), Version 8.0, Lynx Diabase, Ekati Diamond Mine (Dominion Diamond, January 2018)
25 January 2018Regulatory Filing
Dominion Diamond Ekati ULC submits updated Waste Rock and Ore Management Plan (WROMP) Version 8.0 and Jay Road Construction Plan Version 2.0 to the Wek'èezhìi Land and Water Board for approval, reflecting the discovery and management of diabase material in the Lynx Pit and its use as non-PAG construction material for roads and infrastructure.
Waste Rock Geochemistry Acid Rock Drainage
Aquatic Effects Monitoring Program (AEMP) Selenium Response Plan, Version 1.0, Ekati Diamond Mine (Dominion Diamond, August 2016)
31 August 2016Report
Dominion Diamond Ekati Corporation's Aquatic Response Plan for Selenium addresses the exceedance of low action levels for selenium in Cujo Lake detected during 2016 under-ice monitoring, caused by discharge of selenium-elevated water from the King Pond Settling Facility resulting from pumping of Misery Pit and Desperation Pond water in 2015. The plan proposes continued AEMP monitoring and a literature review on selenium toxicology to establish medium and high action levels, with an interim medium action level of 0.0015 mg/L based on US EPA criteria for lentic environments.
Aquatics Aquatic Effects Monitoring (AEMP)Water Quality
Aquatic Response Plan for Potassium, Version 1.0, Ekati Diamond Mine (Dominion Diamond, March 2015)
2015Report
Ekati Diamond Mine Aquatic Response Plan for Potassium, Version 1.0, prepared by Dominion Diamond Ekati Corporation, March 31 2015, submitted to Violet Camsell-Blondin, Chair, Wek'èezhli Land and Water Board (WLWB), Yellowknife. Documents Total Potassium concentrations at AEMP Lake Sites 1994-2014 (Reference: ERM, Nanuq, Vulture), Action Level status for King-Cujo and Pigeon-Fay / Upper Exeter watersheds (action level not reached), potassium source attribution to Process Plant kimberlite processing (particularly underground kimberlite per Rescan 2012c), and references to ERM-Rescan Long Lake Containment Facility water quality work.
Aquatics Aquatic Effects Monitoring (AEMP)Water Quality
Environmental Agreement and Water Licence Annual Report 2013 (Dominion Diamond, April 2014)
24 April 2014Presentation
This 2013 Environmental Agreement and Water Licence Annual Report documents Dominion Diamond Ekati Corporation's compliance with regulatory requirements for the Ekati Diamond Mine, including water management, waste disposal, mining operations, environmental monitoring, and reclamation activities throughout the reporting year.
Regulatory Water Licence Environmental Agreement
WLWB Public Hearing — Lynx Project Water Licence & Land Use Permit, Ekati Diamond Mine (Multiple parties, February 2014)
6 February 2014Report
Public hearing proceedings (February 6-7, 2014) for Dominion Diamond Ekati Corporation's proposed Lynx Project water licence renewal and land use permit applications before the Wek'eezhii Land and Water Board, including presentations and interventions from IEMA, AANDC, Lutsel K'e Dene First Nation, Yellowknives Dene First Nation, and the proponent addressing water management, wildlife protection, closure planning, and regulatory compliance.
Regulatory Water Licence Water Quality
Lynx Project Water Licence and Land Use Permit Public Hearing Binder, Ekati Diamond Mine (MVLWB, 2013 to 2014)
2013–2014Report
Lynx Project — Project Description and Water Licence Public Hearing binder. Includes Wek'èezhìı Land and Water Board (WLWB Wekweètì NT) hearing materials and the Dominion Diamond Project Description "Proposed Development of Lynx Kimberlite Pipe" Section 6 Environmental and Socio-Economic Risks and Mitigation (September 2013) for the Ekati Diamond Mine. Covers wildlife of greatest interest (caribou, grizzly bear, wolverine, wolf, fox, falcons), WEMP main components (wildlife incidents, caribou monitoring, grizzly bear monitoring), key Ekati issues (limit caribou disturbance, reduce permafrost-layer disturbance, reduce seepage from waste rock and processed kimberlite piles), and DFO comments on the AEMP re-evaluation. Email thread (Laura Johnston, Kim Poole, Tim Byers, Kevin O'Reilly tamarack.nt.ca) February 3 2014.
Development Plans Water Licence Regulatory Land Use Permit
Environmental Agreement and Water Licence Annual Report Summaries and Year in Review, Ekati Diamond Mine (Dominion Diamond, 2012 to 2014)
31 December 2012Report
This 2012 Environmental Agreement and Water Licence Annual Report Summary for the Ekati Diamond Mine describes mining operations, environmental monitoring programs, and compliance with regulatory requirements. The report documents activities across air and water quality monitoring, wildlife effects monitoring, fish community assessments, and reclamation efforts conducted by Dominion Diamond Ekati Corporation.
Environmental Agreement Water Licence Monitoring
Annual Interim Closure and Reclamation Plan (ICRP) Progress Report, EKATI Diamond Mine (BHP Billiton, December 2012)
21 December 2012Report
BHP Billiton's 2012 Annual Interim Closure and Reclamation Plan Progress Report documents the first year of implementation of the approved ICRP Version 2.4, detailing reclamation research activities, community engagement, progressive reclamation work completed, and proposed 2013-2015 milestones for closure planning at the Ekati Diamond Mine. The report confirms that BHP Billiton remains on schedule with reclamation research and planning activities in compliance with regulatory obligations under the Water Licence W2009L2-0001 and Environmental Agreement.
Closure & Reclamation Closure Plan Regulatory Waste Rock
Type A Water Licence Renewal (W2012L2-0001) Public Hearing Binder, Ekati Diamond Mine (MVLWB, February 2013)
30 November 2012Regulatory Filing
BHP Billiton's response to technical information requests from regulatory agencies and the Wek'èezhìı Land and Water Board regarding renewal of water licence W2009L2-0001 for the Ekati Diamond Mine, addressing water quality modelling, site-specific water quality objectives for chloride, nitrate and sulphate, and environmental monitoring data.
Water Licence Regulatory Water Quality
Environmental Agreement and Water Licence Annual Report 2011 (BHP Billiton, April 2012)
30 April 2012Report
BHP Billiton Canada Inc.'s 2012 Environmental Agreement and Water Licence Annual Report documents the EKATI Diamond Mine's 2011 operations and compliance with regulatory requirements, including water use, waste management, mining activities, and environmental monitoring programs. The report covers water and waste summaries, construction activities, reclamation work, aquatic effects monitoring, wildlife monitoring, and closure planning for the diamond mine located 300 km northeast of Yellowknife in the Northwest Territories.
Regulatory Water Licence Monitoring
Water Licence Renewal Application, Ekati Diamond Mine, W2009L2-0001 (Ontario Ministry of the Environment, April 2012)
2012Regulatory Filing
BHP Billiton Diamonds Ekati Water Licence Renewal Application 2012 (Eric Denholm BHP Billiton Diamonds, Reference 11-1421-0018, April 23 2012). Includes Ontario Ministry of Environment Standards Development Branch's contributed Canadian Water Quality Guidelines (CWQGs) for chloride and the recently revised CWQG for nitrate to the CCME Water Quality Task Group, Buckley/Roch/McCarter/Rendell/Matheson (1982) chronic-coho-salmon copper-exposure studies, Kamunde/Grosell/Higgs/Wood (2002) copper metabolism in rainbow trout, Rescan 2012 EKATI Koala Watershed Water Quality Modelling, Ohio Administrative Code 3745-1 Division of Surface Water, Rai/Eary/Zachara (1989) chromium environmental chemistry, and Roe et al. (2010) Canadian water quality guidelines for chloride.
Water Quality Water Licence Regulatory
Freshet Waste Rock Storage Area Seepage Survey, Ekati Diamond Mine (SRK Consulting, August 2011)
11 August 2011Report
This 2011 freshet seepage survey report documents water quality monitoring at waste rock storage areas of the Ekati Diamond Mine conducted in June 2011, comparing results against Water Licence W2009L2-0001 effluent quality criteria. The report presents sampling methods, quality control procedures, analytical results from 24 seepage stations across four major storage areas, and identifies several exceedances including elevated total suspended solids at multiple locations and total aluminum at one station.
Waste Rock Water Quality Monitoring
Environmental Agreement and Water Licence Annual Report, Ekati Diamond Mine (BHP Billiton, April 2011)
30 April 2011Report
BHP Billiton Canada Inc.'s 2010 Environmental Agreement and Water Licence Annual Report documents compliance with Type A Water Licence W2009L2-0001 and the Environmental Agreement for the Ekati Diamond Mine. The report provides comprehensive data on water and waste management, mining operations (4.9 million tonnes of ore processed), environmental monitoring programs, spill incidents, and closure and reclamation planning with an updated liability estimate of $157 million CAD.
Environmental Agreement Water Licence Water Quality
Environmental Agreement and Water Licence Annual Report Summary 2011, EKATI Diamond Mine (BHP Billiton, 2011)
~2011Report
Approximate date — inferred from filename
This is the 2011 Environmental Agreement and Water Licence Annual Report Summary for the EKATI Diamond Mine in the Northwest Territories, documenting BHP Billiton's compliance with regulatory requirements and monitoring results across air quality, water quality, land reclamation, fish habitat, and wildlife populations.
Regulatory Water Licence Environmental Agreement Traditional Knowledge
Environmental Agreement and Water Licence Annual Report 2009, Plain Language Summary, Ekati Diamond Mine (BHP Billiton, August 2010)
1 August 2010Report
This 2009 Environmental Agreement and Water Licence Annual Report Plain Language Summary documents BHP Billiton's compliance with regulatory requirements at the Ekati Diamond Mine in the Northwest Territories, detailing monitoring programs for air quality, water quality, fish habitat, and wildlife effects across multiple watersheds and ecosystems.
Water Licence Monitoring Water Quality
Environmental Agreement and Water Licences Annual Report 2009, EKATI Diamond Mine (BHP Billiton, April 2010)
30 April 2010Report
BHP Billiton Canada Inc.'s 2009 Environmental Agreement and Water Licences Annual Report for the EKATI Diamond Mine documents compliance with Type A Water Licence W2009L2-0001 and the Environmental Agreement, providing comprehensive data on water use, waste management, environmental monitoring, and closure planning activities. The report includes detailed operational metrics, monitoring program results, and summaries of environmental management activities conducted throughout 2009.
Regulatory Water Licence Environmental Agreement
Closed Pit Lake Fish Habitat Jurisdictional Motion, WLWB Public Hearing Record, Ekati Diamond Mine (MVLWB, July 2009)
26 July 2009Regulatory Filing
The Wek'èezhii Land and Water Board issued a decision rejecting BHP Billiton's motion claiming the Board lacks jurisdiction to require fish habitat establishment in closed pit lakes at Ekati, ruling that the 1996 Fish Habitat Compensation Agreement does not limit the Board's statutory authority to impose fish habitat reclamation requirements. The Board concluded it has jurisdiction to require fish habitat restoration as part of mine closure and reclamation, whether the Agreement is characterized as a private contract or part of a regulatory authorization.
Closure & Reclamation Fish Habitat Water Licence

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