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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
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
Environmental Agreement Annual Report 1998, Ekati Diamond Mine (BHP Billiton, April 1999)
30 April 1999Report
BHP Diamonds Inc.'s 1998 Environmental Agreement Annual Report documents the Ekati Diamond Mine's transition from construction to operations, including compliance monitoring results, environmental studies, wildlife and aquatic effects monitoring, and continuous improvement initiatives. The report covers operations of the Panda pit, water licence compliance, processed kimberlite management, and various mitigation measures for environmental protection in the Northwest Territories.
Environmental Agreement Monitoring Water Quality
Environmental Agreement Annual Report 1998, Ekati Diamond Mine (BHP Billiton, April 1999)
30 April 1999Report
This is the 1998 Environmental Agreement Annual Report for the Ekati Diamond Mine, submitted by BHP Diamonds Inc. on April 30, 1999. The report documents the mine's transition from construction to full operational phase in October 1998, including comprehensive environmental monitoring results, compliance status with Water Licence N7L2-1616, and detailed accounts of wildlife, aquatic, air quality, and operational environmental management activities throughout 1998.
Environmental Agreement Monitoring Water Quality
14th Board of Directors Meeting Package (IEMA, July 1999)
16 April 1999Meeting Minutes
Minutes from the 13th Board of Directors Meeting of the Independent Environmental Monitoring Agency (April 16-18, 1999) documenting discussions on Ekati Diamond Mine operations, including budget negotiations with BHP, kimberlite toxicity studies, tailings management concerns, fish habitat compensation planning, and regulatory processes for mine expansion applications involving Sable, Pigeon, and Beartooth kimberlite pipes.
Board Meetings Minutes Water Quality Fish Habitat Development Plans
Air Quality Monitoring at the Ekati Diamond Mine Using Vegetation and Lichens as Bioindicators (ABR Inc., 1999)
1 April 1999Report
This report documents the initial air quality monitoring program at the Ekati Diamond Mine using vegetation and lichens as bioindicators, including a comprehensive literature review on the use of lichens and mosses for detecting atmospheric contaminants and 1998 baseline results comparing trace metal concentrations in lichen tissue between project area and reference area stations.
Air Quality Monitoring Particulate Matter Development Plans Water Quality
State of Knowledge Report, West Kitikmeot/Slave Study Area (West Kitikmeot/Slave Study Society, April 1999)
1 April 1999Report
A comprehensive state of knowledge report on the West Kitikmeot/Slave Study area covering environmental, ecological, and human dimensions, including climate, geology, ecosystems, human pressures, and research needs. The report integrates scientific and traditional knowledge about the region's ecosystems and documents environmental stresses from mining, development, and other human activities.
Traditional Knowledge Wildlife Water Quality
13th Board of Directors Meeting Package (Independent Environmental Monitoring Agency, April 1999)
31 March 1999Report
This is the 1998-99 Annual Report of the Independent Environmental Monitoring Agency, covering activities from April 1, 1998 to March 31, 1999. The report documents the Agency's role as an independent environmental watchdog for the Ekati Diamond Mine, including board meetings, community consultations with Aboriginal organizations, aquatic effects monitoring results, traditional knowledge integration efforts, and concerns regarding project expansion at Misery, Sable, Pigeon, and Beartooth sites.
Board Meetings Minutes Aquatic Effects Monitoring (AEMP)
Operating Environmental Management Plan, Support Documents H & L (BHP Billiton, March 1999)
1999Report
EKATI Diamond Mine Operating Environmental Management Plan (OEMP) Support Documents H and L (March 1999). Document H is the Wildlife Effects Monitoring Plan (February 1999). Document L is the Aquatic Effects Monitoring Program (AEMP) Implementation chapter — spatial limits of AEMP long-term monitoring being the Koala drainage basin and the isolated Misery Lake drainage, Special Effects Monitoring (SEM) matrix (Table 5) covering Valued Ecosystem Components (VECs), tailings-disposal-area long-term implications, anthropogenic vs natural impact elucidation, and Before/After × Reference/Impact × Lake/Stream × Location factorial study design.
Monitoring Wildlife Caribou
Water Licence N7L2-1616 Annual Report for 1998, Ekati Diamond Mine (BHP Billiton, March 1999)
1999Report
BHP Diamonds Inc. Annual Report for 1998 under Type A Water Licence N7L2-1616, submitted March 24 1999 to Gordon Wray, Chairman, NWT Water Board (Yellowknife), in accordance with Part B Section 5. Includes Surveillance Network Program station 1616-12 (September 15-21 1998) ICP-MS chemistry for Tot-Cadmium, Tot-Copper, Tot-Aluminum, Tot-Arsenic, Tot-Boron, pH, Orthophosphate, Biological Oxygen Demand, NO3-N + NO2-N, Ammonia-N, Nitrate; and the EKATI Diamond Mine Spill Contingency Plan covering Little Lake suspended-sediment containment, dam-to-Nema Lake topographic-low stockpiling restrictions, and intermediate-dike breach scenarios.
Water Licence Regulatory SNP
Kodiak Lake Sewage Effects Study Technical Report, Ekati Diamond Mine (BHP Billiton, March 1999)
1 March 1999Report
This technical report presents the 1998 Kodiak Lake Sewage Effects Study, the second year of a three-year monitoring program examining the effects of treated sewage effluent discharge on water quality, sediment quality, and aquatic life in Kodiak Lake and Kodiak-Little Stream. The study documents increased water residence time, elevated nutrient loading, enhanced lake productivity, and reduced winter dissolved oxygen levels, leading BHP to decide to redirect sewage discharge from Kodiak Lake to the Long Lake containment area.
Aquatics Aquatic Effects Monitoring (AEMP)Water Quality
Kodiak Lake Sewage Effects Study, Technical Report Appendices, Ekati Diamond Mine (BHP Billiton, March 1999)
1 March 1999Report
This is the appendices volume of the 1998 Kodiak Lake Sewage Effects Study prepared by Rescan Environmental Services Ltd. for BHP Diamonds Inc., containing detailed water quality data, sediment chemistry, biological survey results, and statistical analyses from multiple sampling stations and dates throughout 1998.
Water Quality Aquatics Aquatic Effects Monitoring (AEMP)
Aquatic Effects Monitoring Program (AEMP) Overview Report, Ekati Diamond Mine (BHP Billiton, March 1999)
1 March 1999Report
This 1998 Aquatic Effects Monitoring Program (AEMP) overview report documents the first year of post-baseline monitoring at the Ekati Diamond Mine, assessing impacts on water quality, sediment quality, and aquatic organisms in lakes and streams across the Koala Watershed. The report concludes that while overall aquatic conditions remained largely pristine with no major adverse effects, some nutrient-related impacts were detected, particularly elevated nitrate concentrations downstream of construction activities and slight phytoplankton enhancement in lakes affected by treated sewage discharge.
Aquatic Effects Monitoring (AEMP)Aquatics Water Quality Wastewater
Project Description, Proposed Development of Sable, Pigeon & Beartooth Kimberlite Pipes, Ekati Diamond Mine (BHP Billiton, February 1999)
1 February 1999Regulatory Filing
BHP Diamonds Inc. proposes development of three additional kimberlite pipes (Beartooth, Pigeon, and Sable) at the Ekati Diamond Mine in the Northwest Territories, utilizing open pit mining methods and existing site infrastructure. The document details mining methods, waste rock and water management strategies, environmental impacts and mitigation measures, and reclamation plans including post-closure pit lake development for fisheries habitat replacement.
Development Plans Waste Rock Fish Habitat Wildlife
Environmental Agreement Annual Report, EKATI Diamond Mine (BHP Billiton, 1998)
1 February 1999Report
BHP Diamonds Inc.'s 1998 Environmental Annual Report documents the first year of full diamond mining operations at the Ekati Diamond Mine in the Northwest Territories, detailing environmental management practices, monitoring programs, and operational sustainability across water, air, wildlife, and land resources.
Development Plans Monitoring Water Quality
Kodiak Lake Management Plan, Modeling Component, Ekati Diamond Mine (BHP Billiton, January 1999)
4 January 1999Report
This report presents a water quality modeling study of Kodiak Lake at the Ekati Diamond Mine using the WASP/EUTRO model to assess the lake's assimilative capacity for treated sewage effluent and determine maximum allowable loads of BOD, ammonia, and phosphorous while maintaining adequate dissolved oxygen levels for fish health. The study includes calibration scenarios based on 1997-1998 monitoring data, baseline predevelopment conditions, and predictive modeling to establish loading limits under both open-water and ice-covered seasons.
Water Quality Monitoring Wastewater Regulatory
Review of Cover Design Technologies for the Reclamation of Tailings (G. Ward Wilson, University of Saskatchewan, 1999)
~1999Report
Approximate date — inferred from filename
This technical paper reviews cover design technologies for tailings reclamation across four distinct climate regimes (arid, temperate, high rainfall, and tropical monsoon) using numerical soil-atmosphere modeling. The analysis demonstrates that no single cover system design is universally applicable and that climate parameters, soil properties, and site-specific conditions must be integrated to achieve effective tailings containment and oxidation prevention.
Closure & Reclamation Waste Rock Acid Rock Drainage Kimberlite Tailings
Aquatic Effects Monitoring Program (AEMP) Overview Report, Draft, Ekati Diamond Mine (BHP Billiton, January 1999)
~1999Report
Approximate date — inferred from filename
This is the 1998 Aquatic Effects Monitoring Program (AEMP) Overview Report for the Ekati Diamond Mine, documenting the first year of post-baseline aquatic monitoring. The report presents results from Tier 1 Core monitoring of lakes and streams and Tier 2 Special Effects monitoring, concluding that while overall water and sediment quality remained good with no major adverse effects, some nutrient enrichment was detected downstream of mine construction activities, particularly elevated nitrate in lakes affected by Long Lake dam construction and blasting operations.
Aquatic Effects Monitoring (AEMP)Aquatics Water Quality
BHP Diamonds Facts, Issue 3 (BHP Billiton, 1999)
~1999Report
Approximate date — inferred from filename
This corporate fact sheet describes the Ekati Diamond Mine in the Northwest Territories, Canada—a joint venture operated by BHP Diamonds Inc. that represents Canada's first diamond mine. The document provides comprehensive details on the mine's location, geology, infrastructure, operations, environmental management, and workforce.
Development Plans Exploration Regulatory Waste Rock Water Quality

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940 documents · Page 30 of 47