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472 documents · Page 15 of 24

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Environmental Assessment Report, Sable, Pigeon & Beartooth Kimberlite Pipes, Ekati Diamond Mine (BHP Billiton, April 2000)
1 April 2000Regulatory Filing
This Environmental Assessment Report evaluates the proposed development of the Sable, Pigeon, and Beartooth kimberlite pipes at the Ekati Diamond Mine in the Northwest Territories, prepared by BHP Diamonds Inc. in response to Terms of Reference issued by the Mackenzie Valley Environmental Impact Review Board in December 1999. The report comprehensively assesses environmental, social, economic, and cultural impacts of the proposed mining expansion across all valued ecosystem components.
Development Plans Environmental Agreement Waste Rock
Sable, Pigeon and Beartooth Development Regulatory File and BHP Socio Economic Annual Reports, Ekati Diamond Mine (Chris Mills, 1997 to 2000)
1 April 2000Report
This composite document contains two reports: (1) Chris Mills' technical review of BHP Diamonds' wastewater and tailings management for the NWT Diamonds Project, highlighting concerns about tailings characterization, turbidity discharge compliance, and acid neutralization potential; and (2) the 1999 Annual Report on Community Health and Well Being for BHP's point-of-hire communities, presenting socioeconomic monitoring data on employment, health outcomes, and social indicators for communities affected by the Ekati Mine development.
Wastewater Waste Rock Water Quality
Independent Environmental Monitoring Agency (IEMA) Performance Evaluation Report (Macleod Institute, March 2000)
7 March 2000Report
The Macleod Institute conducted a comprehensive performance evaluation of the Independent Environmental Monitoring Agency (IEMA), examining the Agency's effectiveness in meeting its responsibilities under the Environmental Agreement governing the Ekati Diamond Mine. The evaluation assessed stakeholder understanding of the Agency's mandate, satisfaction with outcomes, activity design quality, and external factors influencing Agency performance, ultimately concluding that while the Agency's technical contributions are strong, significant improvements are needed in communications, community engagement, strategic planning, and internal management.
Environmental Agreement Monitoring Traditional Knowledge Waste Rock
Reclamation Research Program, 1999, Ekati Diamond Mine (ABR Inc., May 2000)
1 March 2000Report
This 1999 annual report documents BHP Diamonds' reclamation research program at the Ekati Diamond Mine, evaluating kimberlite and lake sediment as growth substrates for vegetation, assessing riparian and wetland vegetation establishment in the Panda Diversion Channel, and monitoring reclamation efforts at multiple mine disturbance sites. The research focused on developing techniques to support long-term plant establishment and ecosystem recovery in support of mine closure and reclamation objectives.
Closure & Reclamation Revegetation Kimberlite Tailings Water Quality
Operating Environmental Management Plan and Supporting Documents A to F, Ekati Diamond Mine (BHP Billiton, February 2000)
2000Report
EKATI Diamond Mine Operating Environmental Management Plan (OEMP) Supporting Documents A-F (February 2000, BHP Diamonds Inc., Yellowknife). Includes Support Document D Spill and General Contingency Plan, the Waste Management Plan (Section 3.0 Contingency Planning for improper disposal / fire / extreme weather and safety-cease procedures for landfill operations), Air Quality Management & Monitoring Plan QA for ambient air monitoring systems (per US EPA Quality Assurance Handbook for Air Pollutant Measurement Systems), and references to Pomeroy / Marsh / Jones / Davies "Spatial Distribution of Snow Chemical Load at the Tundra-Taiga Transition" (Biogeochemistry of Seasonally Snow-covered Catchments).
Development Plans Regulatory Air Quality
Waste Rock & Ore Storage Management Plan and Wastewater & Processed Kimberlite Management Plan, Ekati Diamond Mine (BHP Billiton, February 2000)
1 February 2000Report
This document is the Waste Rock and Ore Storage Management Plan for the Ekati Diamond Mine, detailing the characterization, geochemical testing, and management strategies for mine waste rock, ore storage, and drainage from four kimberlite pipes (Panda, Koala, Misery, and Fox) scheduled for sequential mining between 1997 and 2014. The plan includes rock type geology, results of geochemical testing, water quality predictions, waste management strategies, and monitoring protocols required under the Type A Water Licence.
Waste Rock Acid Rock Drainage Geochemistry
Interim Abandonment and Restoration Plan, Ekati Diamond Mine (BHP Billiton, February 2000)
1 February 2000Report
This interim abandonment and restoration plan describes BHP's strategy for reclaiming disturbed areas at the Ekati Diamond Mine following the mining of four kimberlite pipes (Panda, Koala, Fox, and Misery) over a projected 15-year operational period. The plan details reclamation approaches for open pits, underground facilities, tailings containment areas, waste rock storage, water management structures, quarries, roads, and other infrastructure, emphasizing stable landforms, water resource protection, and facilitation of natural recovery through progressive reclamation, revegetation research, and post-closure monitoring.
Closure & Reclamation Closure Plan Revegetation
Waste Rock and Waste Rock Storage Area Seepage Survey Case File, Ekati Diamond Mine (WLWB, 2000 to 2008)
2000–2008Report
Waste Rock Seepage Survey binder for the Ekati Diamond Mine (BHP Billiton Diamonds Inc., later under Wek'èezhìi and Mackenzie Valley Land and Water Board oversight) covering 1999–2008. Includes annual spring/summer seepage survey reports, BHPB correspondence (Laura Tyler, Jim Millard, David Scott, Brent Murphy, Sarah Baines), MVLWB/WLWB correspondence (Violet Camsell-Blondin, Ryan Fequet, Sevanna), 2005 EIR (Environmental Impact Review) technical meetings, ICRP (Interim Closure and Reclamation Plan) Terms of Reference, 2006 Water and Processed Kimberlite Management Plan (WPKMP), Surveillance Network Program non-compliance correspondence (Red Pederson Agency / John Witteman BHP), and Water Licence MV2003L2-0013 documents.
Waste Rock Water Quality Regulatory Geochemistry
Water Licence N7L2-1616 Amendment for Dewatering and Mining of Fox Lake, Case File (BHP Billiton, 2000 to 2004)
2000–2004Regulatory Filing
This is a comprehensive regulatory filing document containing correspondence and meeting records spanning from 2000 to 2004 regarding BHP Billiton's Fox Pit water licence amendment application for the Ekati Diamond Mine, including dewatering plans, fish habitat compensation, waste rock storage, and environmental monitoring requirements reviewed by multiple regulatory agencies.
Regulatory Water Licence Development Plans
Waste Rock Storage Area Seepage Survey, Ekati Diamond Mine (BHP Billiton, November 1999)
1999Report
BHP Diamonds Inc. 1999 Waste Rock Area Seepage Survey "Book #10" — transmittal November 17 1999 to Gordon Wray, Chairman, NWT Water Board. Same survey as "#13 1999" with additional appendix material: Appendix A Test Methodologies (ETL EnviroTest sub-contracted labs in Edmonton, Calgary, Saskatoon, Thunder Bay, Winnipeg, Grande Prairie; analytical methods for Beryllium, Boron, Cadmium, Calcium, Chromium, Cobalt, Copper, Iron, Sulphate by Ion Chromatography), and weekly leachate test results from February-October 1995 (pH, acidity/alkalinity as CaCO3, conductivity, sulphate SO4) on the Panda waste rock pile draining to Beartooth Lake, with pH-below-6.0 trigger threshold for seepage controls.
Waste Rock Geochemistry Water Quality
Waste Rock Storage Area Seepage Survey, Ekati Diamond Mine (BHP Billiton, November 1999)
1999Report
BHP Diamonds Inc. 1999 Waste Rock Area Seepage Survey transmittal letter (November 17 1999) and report to Gordon Wray, Chairman, NWT Water Board (Yellowknife). File reference 1616. Discusses the Panda waste rock pile drainage into Beartooth Lake, pH-6.0 trigger threshold for initiating seepage controls, and includes ETL EnviroTest (Edmonton/Calgary) Chain of Custody analytical reports with chemistry results for seepage samples.
Waste Rock Water Quality Monitoring Geochemistry
Petrographic Analysis, Tailings & Backfill Samples (Norecol, Dames & Moore, November 1999)
1 November 1999Report
Petrographic and scanning electron microscopy analysis of tailings and backfill samples from a mining operation, documenting mineral composition, texture, sulfide assemblages, and grain size distributions.
Waste Rock Geochemistry Acid Rock Drainage Kimberlite Tailings Monitoring
Operational Material Characterization and Monitoring of Weathering at Huckleberry (Huckleberry Mines Ltd., October 1999)
27 October 1999Presentation
Huckleberry Mines Ltd. presents operational material characterization and weathering monitoring procedures for their porphyry copper deposit, including ARD assessment of waste rock types, daily digging plans based on NPR and copper grade classification, and integrated water quality and materials handling monitoring protocols.
Waste Rock Acid Rock Drainage Geochemistry Development Plans
Waste Rock Storage Area Seepage Survey Correspondence, Ekati Diamond Mine (MVLWB, October 1999 to June 2002)
1999Report
2001 Rock Storage Area Seepage and Waste Rock Survey Report binder for the Ekati Diamond Mine (BHP Billiton). Includes correspondence with the Mackenzie Valley Land and Water Board (MVLWB — Laurie Cordell, Melody MacLeod), BHPB responses (Jim Millard, David Scott, Brent Murphy), 2001 Aquatic Effects Monitoring Program refinements, Panda and Misery seepage monitoring station maps and locations (SEEP-001 through SEEP-083 — Cujo Lake, Thinner Lake, King Pond Dam, Beartooth Lake, Bearclaw Lake, Beartooth waste rock storage area, Coarse Kimberlite Storage Area), and recommendations for granite vs. kimberlite seepage monitoring frequency.
Waste Rock Geochemistry Monitoring
Project Description, Proposed Development of Sable, Pigeon and Beartooth Kimberlite Pipes, Ekati Diamond Mine (BHP Billiton, October 1999)
1 October 1999Regulatory Filing
BHP Diamonds Inc. proposes to develop three additional kimberlite pipes (Sable, Pigeon, and Beartooth) at the Ekati Diamond Mine in the Northwest Territories to extend mine life from 15 to 18 years. The project description outlines mining methods, waste and water management strategies, infrastructure requirements, and environmental mitigation measures for the three new open pit operations, prepared in response to Mackenzie Valley Environmental Impact Review Board requirements and incorporating community consultation feedback.
Development Plans Waste Rock Wastewater
Assessment of Ecological Effects from Cadmium Releases, Proposed Diavik Diamond Mine (Gartner Lee, September 1999)
1 August 1999Report
This environmental assessment evaluates the potential ecological effects of cadmium releases from the proposed Diavik Diamond Mine on Lac de Gras, examining cadmium sources, environmental fate, bioaccumulation in aquatic organisms, and predicted adverse effects on aquatic life including fish, invertebrates, and sediment-dwelling organisms.
Aquatics Water Quality Development Plans
Compliance Report, Water Licence N7L2-1616, Ekati Diamond Mine (BHP Billiton, July 1999)
20 July 1999Report
This 1998 compliance report documents BHP Diamonds Inc.'s adherence to water licence N7L2-1616 for the Ekati Diamond Mine, detailing water use, dewatering operations, construction projects, waste disposal, tailings management, environmental monitoring, and 17 inspections conducted during the year. Overall compliance is deemed satisfactory, though some non-compliance events occurred regarding runoff water quality and sewage discharge standards, which the licensee addressed through remedial infrastructure and operational modifications.
Regulatory Water Licence Water Quality
Board Briefing Package, 15th Board of Directors Meeting (IEMA, September 1999)
8 July 1999Meeting Minutes
Minutes from the 14th Board of Directors Meeting (July 8-11, 1999) and associated Members Meeting and Annual General Meeting of the Independent Environmental Monitoring Agency, documenting discussions on environmental monitoring at Ekati Diamond Mine, budget negotiations with BHP, traditional knowledge integration, cumulative effects assessment, community consultations, and agency staffing and operations.
Board Meetings Minutes Monitoring Closure & Reclamation Traditional Knowledge
Duthie Mine Acid Rock Drainage Case Study (Silver Standard Resources, June 1999)
24 June 1999Report
A comprehensive case study and historical inventory of the Duthie Mine in British Columbia, documenting its operational history from 1908 to 1988, mining production records, geological characteristics, tailings management, and water quality monitoring efforts. The document includes detailed MINFILE records of ore grades, commodity recoveries, and reclamation activities spanning multiple decades of ownership and operation.
Waste Rock Water Quality Closure & Reclamation Development Plans Monitoring Geochemistry
BHP Diamonds Inc. Newsletter, Issue 1, Ekati Diamond Mine (BHP Billiton, May 1999)
1 May 1999Report
BHP Diamonds Inc. May 1999 newsletter reporting on operations at the Ekati Diamond Mine, including opening of the Sorting and Valuation Facility in Yellowknife, first aid competition results, employee updates, socio-economic agreements with northern communities, safety initiatives, and recognition of the frozen core dam design as a 1999 CEA Showcase Award winner.
Development Plans Monitoring Waste Rock Water Quality

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472 documents · Page 15 of 24