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Wastewater and Processed Kimberlite Management Plan (WPKMP), Version 11.0, Ekati Diamond Mine (Arctic Canadian Diamond Company, May 2025)
30 May 2025Regulatory Filing
Burgundy Diamond Mines submits Version 11.0 of the Ekati Diamond Mine Wastewater and Processed Kimberlite Management Plan to the Wek'èezhìi Land and Water Board, incorporating six revisions required by the Board's March 1, 2024 decision on Version 10.0. The plan describes management of minewater, sewage, and fine processed kimberlite across multiple mine sites and containment facilities to ensure compliance with Water Licence W2022L2-0001.
Wastewater Kimberlite Tailings Waste Rock
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
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 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
Wastewater and Processed Kimberlite Management Plan (WPKMP), Version 9.0, Reasons for Decision, Ekati Diamond Mine (Wek'èezhìı Land and Water Board, June 2019)
13 June 2019Regulatory Filing
The Wek'èezhìi Land and Water Board approved Dominion Diamond Mines' Wastewater and Processed Kimberlite Management Plan (WPKMP) Version 9.0 on June 13, 2019, which addresses previous board direction and proposes reduced inspection frequency for processed kimberlite deposition into Panda and Koala pits. The decision includes requirements for closure and reclamation planning consistency with the approved Interim Closure and Reclamation Plan.
Regulatory Water Licence Wastewater
Wastewater and Processed Kimberlite Management Plan (WPKMP) Version 9.0, Agency Comment Letter, Ekati Diamond Mine (Independent Environmental Monitoring Agency, April 2019)
23 April 2019Letter
The Independent Environmental Monitoring Agency reviewed and approved Waste Process Kimberlite Management Plan Version 9.0 submitted by Dominion Diamond Mines ULC, with no concerns regarding the plan's updates to Wek'eezhii Land and Water Board directives and approval of the proposed change to Processed Kimberlite pipeline inspection frequency.
Waste Rock Kimberlite Tailings Correspondence
Wastewater and Processed Kimberlite Management Plan (WPKMP), Version 9.0, Ekati Diamond Mine (Dominion Diamond, March 2019)
22 March 2019Regulatory Filing
Dominion Diamond Mines submits Version 9.0 of the Ekati mine Wastewater and Processed Kimberlite Management Plan to the Wek'èezhìi Land and Water Board for approval, addressing previous directives and proposing changes to operational monitoring frequency at the Long Lake Containment Facility and Panda/Koala fine processed kimberlite pipeline, while incorporating closure and reclamation planning requirements.
Wastewater Waste Rock Kimberlite Tailings
Wastewater and Processed Kimberlite Management Plan (WPKMP) Version 8.0 and Panda Koala Deposition Study, Agency Comments, Ekati Diamond Mine (Independent Environmental Monitoring Agency, November 2018)
29 November 2018Letter
The Independent Environmental Monitoring Agency submits detailed comments on Dominion Diamond Ekati ULC's Wastewater Processed Kimberlite Management Plan version 8.0 and Panda Koala Deposition Study, recommending contingent approval of Panda and Koala pits as processed kimberlite containment areas pending confirmation of insufficient capacity in existing facilities and raising concerns about freshwater cap depth, monitoring frequency, ammonia/nitrate exclusion, and modelling assumptions.
Correspondence Waste Rock Kimberlite Tailings
Wastewater and Processed Kimberlite Management Plan (WPKMP), Version 8.0, Ekati Diamond Mine (Dominion Diamond, September 2018)
10 September 2018Regulatory Filing
Dominion Diamond Ekati ULC submits Version 8.0 of the Wastewater and Processed Kimberlite Management Plan and a Panda/Koala Deposition Study to the Wek'èezhìi Land and Water Board, requesting approval to commence Fine Processed Kimberlite deposition into the Panda/Koala Processed Kimberlite Containment Area in early 2019, with updated site-wide management procedures incorporating the Jay and Misery Underground Projects.
Regulatory Water Licence Wastewater
Lake Sediment Literature Review, Interim Closure and Reclamation Plan (ICRP) Version 3.0, Ekati Diamond Mine (Dominion Diamond, March 2018)
1 March 2018Report
This literature review examines the suitability of stockpiled lake sediment from the Ekati Diamond Mine as a reclamation substrate for revegetating rock pads and tailings. The document synthesizes greenhouse trials, field studies, and long-term monitoring data (1995–2017) to assess lake sediment's physical and chemical properties, limitations, and potential when used alone or in combination with glacial till, topsoil, or processed kimberlite.
Closure & Reclamation Revegetation Waste Rock Monitoring
Wastewater and Processed Kimberlite Management Plan Version 2.0, EKATI Diamond Mine (BHP Billiton, October 2011)
20 October 2011Report
BHP Billiton's Wastewater and Processed Kimberlite Management Plan Version 2.0 (October 2011) describes the comprehensive management strategy for all wastewater and fine processed kimberlite at the Ekati Diamond Mine, submitted to the Wek'èezhii Land and Water Board for approval under Water Licence W2009L2-0001. The plan proposes significant updates to processed kimberlite deposition strategy, deferring or potentially eliminating the need for Cell D deposition by utilizing upstream areas in Cells A and C and the mined-out Beartooth Pit, while maintaining water quality standards and minimizing environmental effects in the receiving environment.
Kimberlite Tailings Wastewater Water Quality
2008-2009 Fay Bay Monitoring Program, Ekati Diamond Mine (BHP Billiton, September 2010)
20 September 2010Report
This 2008-2009 monitoring report documents the environmental response to and effects assessment of an unplanned release of approximately 4,465 m³ of processed kimberlite into Fay Bay from Cell B of the Long Lake Containment Facility in May 2008. The report presents results of land-based vegetation reclamation monitoring and comprehensive aquatic monitoring including water quality, sediment chemistry, benthic invertebrate and fish community assessments, concluding that effects were generally localized to Fay Bay with evidence of short-term impacts and successful cleanup of over 80% of the released material.
Monitoring Aquatics Water Quality
Updated 2008 Interim Closure and Reclamation Plan (ICRP), Appendix 5.1-4A Reclamation Research Plans, Ekati Diamond Mine (BHP Billiton, February 2010)
2010Report
Updated 2008 Interim Closure and Reclamation Plan (ICRP) for the Ekati Diamond Mine, BHP Billiton Canada Inc. (Operator), with ICRP Appendix 5.1-4A Reclamation Research Plans. Includes Research Plan #1 Pit Perimeter Safety (uncertainty around wildlife and people safety near open pits during pit flooding and post-closure), and Research Plan #14 Stabilization of Extra Fine Processed Kimberlite (EFPK) in the Long Lake Containment Facility (LLCF) — kimberlite characterization for Panda and Fox pipes (clay types, settling characteristics), Project Tracking PKCA schedule, total expected costs $1.0-1.5 million, references to BHP Billiton 2006 Wastewater and Processed Kimberlite Management Plan.
Closure & Reclamation Closure Plan Wildlife Regulatory
NWT Spill Report #08-214, Ekati Diamond Mine (BHP Billiton, May 2008)
2008Report
NWT Spill Report Ekati-2008-100 — Spill Report Form (24-Hour Report Line 867-920-8130, NWT Spill Report Form for oil/gas/hazardous chemicals/other materials). Includes email thread (May 17-21 2008) between Leslie Coe (BHP Billiton), Jason Brennan (INAC), Ryan Fequet (Wek'èezhii Land and Water Board), Wendy Bidwell (BHP Billiton — Ekati Phone 867-880-2059), and Sarah Baines (BHP), with attached NWT Spill Report #08-214 (product had entered receiving environment, attached 63.3 KB form). Dave Abernethy contact 867-445-9008.
Regulatory Waste Rock Correspondence 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
Long Lake Containment Facility (LLCF) Seasonal Water Quality Investigation, 2005–2006, Ekati Diamond Mine (BHP Billiton, October 2007)
1 October 2007Report
This report presents the results of a seasonal water quality investigation of the Long Lake Containment Facility (LLCF) at the Ekati Diamond Mine conducted from December 2005 to September 2006, measuring physical and chemical parameters across five cells to understand stratification, mixing processes, and salt exclusion effects related to processed kimberlite management.
Water Quality Monitoring Wastewater Aquatic Effects Monitoring (AEMP)
Environmental Impact Report Information Session, Responses to Questions, Ekati Diamond Mine (BHP Billiton, June 2006)
15 June 2006Meeting Minutes
Transcript of questions and responses from the June 15-18, 2006 Environmental Impact Report Information Session at Ekati Diamond Mine, where BHP Billiton representatives and consultants addressed community and government concerns regarding mining operations, environmental management, wildlife impacts, water quality, waste disposal, and closure planning.
Development Plans Waste Rock Closure & Reclamation
Changes to the Management of the Long Lake Containment Facility (IEMA, March 2005)
17 March 2005Presentation
This IEMA workshop presentation reviews BHPB's management review of the Long Lake Containment Facility, documenting consultation processes with regulators and communities on processed kimberlite containment options and cell-filling challenges at the Ekati Diamond Mine.
Waste Rock Kimberlite Tailings Geochemistry Revegetation
Revegetation Research Projects, EKATI Diamond Mine (BHP Billiton, March 2005)
1 March 2005Report
This 2004 annual report presents a five-year assessment of revegetation research at the EKATI Diamond Mine's Long Lake Containment Facility, documenting soil amendment studies, species trials, and plant establishment on processed kimberlite, along with evaluation of progressive reclamation sites including airstrip esker, topsoil stockpiles, and channel stabilization efforts.
Closure & Reclamation Revegetation Kimberlite Tailings Habitat Assessment
5 Year Performance Review of Ekati's Processed Kimberlite Containment Facility (BHP Billiton, October to December 2004)
14 October 2004Report
This 5-year performance review of Ekati's Long Lake Containment Facility (LLCF) for processed kimberlite evaluates operational lessons learned and presents multiple optimization options (Options 1-3c) for future development, operation, and closure. The document includes detailed technical analysis of beaching angles, ice entrainment, water quality management, and reclamation challenges, with recommendations for adaptive management strategies.
Waste Rock Kimberlite Tailings Closure & Reclamation

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84 documents · Page 1 of 5