Closure & Reclamation

Mine closure plans, reclamation, abandonment, post-closure monitoring

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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
BHP Billiton Diamonds Inc. v. Wek'eezhii Land and Water Board, Judicial Review Record (BHP Billiton, 2009 to 2010)
26 July 2009Regulatory Filing
The Wek'èezhìi Land and Water Board ruled on July 26, 2009, that it has jurisdiction to require BHP Billiton to establish and maintain fish habitat in closed pit lakes at the Ekati Diamond Mine during closure and reclamation, rejecting BHP Billiton's argument that a 1996 Fish Habitat Compensation Agreement with the Department of Fisheries and Oceans precluded such requirements.
Regulatory Fish Habitat Closure & Reclamation
Public Hearing on BHP Billiton Motion on Board Jurisdiction Over Fish Habitat, Ekati Diamond Mine (BHP Billiton, May to July 2009)
15 July 2009Regulatory Filing
BHP Billiton submits a motion to the Wek'èezhii Land and Water Board seeking clarification that the Board lacks jurisdiction to require the establishment of fish habitat in closed pit lakes at the Ekati Diamond Mine, arguing that the 1996 Fish Habitat Compensation Agreement with DFO provides full and final compensation for fish habitat loss for the life of the project.
Fish Habitat Closure & Reclamation Regulatory Correspondence
Revegetation Research Projects 2008, EKATI Diamond Mine (BHP Billiton, May 2009)
2009Report
EKATI Diamond Mine Revegetation Research Projects 2008 report (May 2009, BHP Billiton Diamonds Inc., Yellowknife). Documents revegetation trial substrate-placement treatments (1: 20cm lake sediment, 2: 20cm topsoil, 3: 20cm topsoil over 20cm lake sediment, 4: 20cm glacial till, 5: 0-5cm lake sediment), Layfield LP8 Non-woven Geotextile fabric placement under topsoil at Fox Portal vs direct placement, native legume mix and NGC mix seeding, NPK 16-16-16 fertilizer broadcast at 100 kg/ha, tundra plug transplants, smectite mineralogy (montmorillonite, beidellite, saponite), Sodium Adsorption Ratio for soil/irrigation extracts, and soil pH classification table (Very strongly acid 4.5-5.0 through Very strongly alkaline 9.0+).
Closure & Reclamation Revegetation Monitoring Development Plans
Interim Closure and Reclamation Plan (ICRP) Regulatory Case File, Ekati Diamond Mine (WLWB, 2006 to 2009)
3 February 2009Report
A collection of documents from January-February 2009 regarding BHP Billiton's Interim Closure and Reclamation Plan (ICRP) for Ekati Diamond Mine, including the working group meeting agenda for February 3-4, 2009, and detailed comments from regulators, environmental monitors, and Indigenous communities on closure objectives, reclamation research, wildlife habitat, and post-closure monitoring.
Closure & Reclamation Closure Plan Post-Closure Monitoring
Progress Report Towards Sustainable Mining 2009 (The Mining Association of Canada, 2009)
~2009Report
Approximate date — inferred from filename
The Mining Association of Canada's 2009 Towards Sustainable Mining (TSM) progress report presents the corporate social responsibility performance of 17 member mining companies across four key performance elements: tailings management, energy use and greenhouse gas emissions management, external outreach, and crisis management planning. The report details facility-level assessments using a five-level rating scale, highlights award-winning performers, and describes ongoing development of new frameworks for Aboriginal relations, biodiversity conservation, and mine closure management.
Greenhouse Gas Development Plans Closure & Reclamation Traditional Knowledge Waste Rock Wildlife
Creating Lakes from Open Pit Mines, Processes and Considerations with Emphasis on Northern Environments (DFO, 2009)
~2009Report
Approximate date — inferred from filename
A comprehensive technical report on the formation, characteristics, and management of pit lakes created from open pit mining operations, with emphasis on northern environments and applications to diamond mining in Canada. The report covers hydrogeology, limnology, geochemistry, biology, modeling approaches, and strategies for enhancing beneficial end uses such as fish habitat and water supply.
Aquatics Fish Habitat Water Quality
Creating Lakes from Open Pit Mines, Processes and Considerations with Emphasis on Northern Environments (DFO, 2009)
~2009Report
Approximate date — inferred from filename
This 2009 Canadian technical report comprehensively reviews the literature on mining pit lakes with emphasis on northern environments, covering their physical characteristics, hydrogeology, limnology, chemistry, and biology, along with case studies and strategies for enhancing beneficial end uses such as fish habitat creation and water quality management.
Closure & Reclamation Aquatics Water Quality Monitoring
Sustainable Development Report, EKATI Diamond Mine (BHP Billiton, December 2008)
31 December 2008Report
BHP Billiton's 2008 Sustainable Development Report documents the Ekati Diamond Mine's operational performance for the calendar year, including employment data, northern spending, safety achievements, and community investment initiatives. The report demonstrates that the mine exceeded socio-economic agreement targets for northern and aboriginal employment and spending while maintaining strong safety performance and advancing long-term operational sustainability.
Development Plans Monitoring Water Quality Traditional Knowledge Closure & Reclamation
Final Interim Closure and Reclamation Plan (ICRP) Working Draft, Ekati Diamond Mine (BHP Billiton, December 2008)
16 December 2008Report
This Final Interim Closure and Reclamation Plan (ICRP) working draft submitted by BHP Billiton in December 2008 outlines comprehensive closure and reclamation strategies for the Ekati Diamond Mine in the Northwest Territories, including pit lake flooding, waste rock management, infrastructure removal, and long-term environmental monitoring through 2060. The plan was developed with input from northern communities, government agencies, and regulatory bodies to ensure compliance with water licences, environmental agreements, and closure standards.
Closure & Reclamation Closure Plan Waste Rock
Environmental Agreement and Water Licences Annual Report 2007, Plain English Summary, EKATI Diamond Mine (BHP Billiton, May 2008)
1 May 2008Report
This plain English summary of BHP Billiton's 2007 Environmental Agreement and Water Licences Annual Report for the EKATI Diamond Mine documents the company's compliance with regulatory requirements and environmental management across water quality, air quality, land reclamation, wildlife monitoring, and waste management. The report demonstrates that EKATI operated within the terms of its water licences and environmental agreement in 2007, with monitoring programs showing generally healthy aquatic and terrestrial ecosystems despite some localized increases in water quality parameters and ongoing wildlife management challenges.
Environmental Agreement Water Quality Monitoring
Revegetation Research Projects 2006 and 2007, Ekati Diamond Mine (BHP Billiton, December 2007)
1 December 2007Report
This report documents revegetation research and progressive reclamation monitoring at the Ekati Diamond Mine for 2006 and 2007, assessing various revegetation trials, soil amendments, and natural recovery of disturbed sites to support closure and reclamation goals. Key findings include successful establishment of native grass cultivars on topsoil stockpiles, variable success with lake sediment revegetation, and promising results from processed kimberlite stabilization studies.
Closure & Reclamation Revegetation Monitoring
Rejuvenation Through Reclamation and Operating for Closure: Proceedings of the 31st Annual British Columbia Mine Reclamation Symposium (TRCR, September 2007)
20 September 2007Report
Proceedings of the 31st Annual British Columbia Mine Reclamation Symposium held September 17-20, 2007 in Squamish, featuring technical papers on mine reclamation practices, case studies from Canadian mines, and research on environmental remediation including acid rock drainage treatment, revegetation, wildlife habitat restoration, and legacy mine site management.
Closure & Reclamation Waste Rock Acid Rock Drainage Wildlife
Pigeon Stream Fish Habitat Compensation and Monitoring Plan, Ekati Diamond Mine (BHP Billiton, August 2007)
1 August 2007Report
This report describes the Pigeon Stream Fish Habitat Compensation and Monitoring Plan for the Ekati Diamond Mine, detailing how habitat lost to the proposed Pigeon Pit development will be compensated through the construction of the Pigeon Stream Diversion. The plan provides habitat budgets, final engineering designs, construction schedules, and a comprehensive post-construction monitoring program to ensure no net loss of fish habitat.
Fish Habitat Aquatic Effects Monitoring (AEMP)Closure & Reclamation
Update on Guidance for Inuvik and Yellowknife Topic-Specific General Hearing, Topic 14 Environmental Management Plans, Monitoring and Follow-up (Joint Review Panel, January 2007)
19 January 2007Report
The Joint Review Panel provides guidance for Topic-Specific General Hearings scheduled for March 2007 in Inuvik and Yellowknife concerning environmental and socio-economic management plans, monitoring programs, and follow-up procedures for the Mackenzie Gas Project. The document outlines hearing topics, key discussion matters, and procedural questions to guide participant preparation.
Closure & Reclamation Monitoring Development Plans Water Quality Regulatory
Interim Closure and Reclamation Plan (ICRP), Appendices Volume 2 - Draft (BHP Billiton, January 2007)
1 January 2007Report
This document is the draft Interim Closure and Reclamation Plan (ICRP) for the Ekati Diamond Mine, prepared by BHP Billiton in January 2007, providing comprehensive closure objectives, reclamation criteria, research plans, and monitoring protocols for all major mine components including open pits, underground mines, waste rock storage areas, and containment facilities.
Closure & Reclamation Closure Plan Post-Closure Monitoring
Interim Closure and Reclamation Plan (ICRP) Volume 1 - Draft, Ekati Diamond Mine (BHP Billiton, January 2007)
1 January 2007Report
This interim closure and reclamation plan for the Ekati Diamond Mine outlines BHP Billiton's objectives, methods, and timeline for closing and reclaiming the mine site, with operations anticipated to continue until 2020 and post-closure monitoring extending to approximately 2054. The plan addresses six major mine components—open pits, underground mines, waste rock storage areas, processed kimberlite containment facilities, dams/dykes/channels, and buildings/infrastructure—detailing pre-disturbance conditions, closure criteria, engineering approaches, risks, research needs, and monitoring programs.
Closure & Reclamation Closure Plan Post-Closure Monitoring Traditional Knowledge
Participation in the Mackenzie Gas Project Joint Review Panel Hearing (Joint Review Panel for the Mackenzie Gas Project, January to February 2007)
2007Letter
Letter from Joint Review Panel for the Mackenzie Gas Project (Inuvik, NT) to Dr. Bill Ross, Chair, Independent Environmental Monitoring Agency for the Ekati Diamond Mine, January–February 2007. Invites IEMA participation in the JRP hearing on the proposed Mackenzie Gas Project — focused on decommissioning and abandonment of pipeline infrastructure (including transfers), effectiveness of existing socio-economic and biophysical environmental monitoring and follow-up regimes in the NWT, and regulatory bodies' inspection/enforcement of Ekati licenses and permits. Panel Manager: Paula Pacholek.
Correspondence Environmental Agreement Monitoring Closure & Reclamation
Closure Options Evaluation Minesite Tour (BHP Billiton, July 2006)
7 July 2006Presentation
This document is a comprehensive presentation and tour package for the Ekati Diamond Mine closure options evaluation conducted July 7-9, 2006, involving community representatives, regulators, and IEMA. It details closure options for major mine components (open pits, waste rock storage areas, the Panda Diversion Channel, and Long Lake Containment Facility), technical information on mining operations, and BHP Billiton's environmental and social commitments.
Closure & Reclamation Closure Plan Waste Rock Regulatory
Environmental Impact Report Information Session, Responses to Questions (BHP Billiton, June 2006)
15 June 2006Report
This document contains transcribed dialogue and written responses from the Ekati Diamond Mine Environmental Impact Report Information Session held June 15–18, 2006, in which BHP Billiton, government agencies, Indigenous representatives, and consultants addressed questions on mining operations, waste management, environmental monitoring, wildlife impacts, closure planning, and regulatory compliance.
Development Plans Waste Rock Closure & Reclamation

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