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BHP Billiton Diamonds Inc. applies to renew water licence N7L2-1616 for continued operation of the Ekati Diamond Mine from 2004 to 2015, detailing water use, waste management, environmental monitoring, and predicted impacts of mining activities in the Koala watershed near Yellowknife, Northwest Territories.
EBA Engineering Consultants conducted a comprehensive revegetation assessment at the Ekati Diamond Mine in 2003, evaluating transplanting trials (willow cuttings, grass sprigs, legumes), assessing existing reclamation projects (aerial seeding, sod placement, channel restoration), and reviewing topsoil salvage and seed inventory management for future mine closure and reclamation operations.
This 2003 baseline assessment report documents fish habitat conditions at Matthews Lake and surrounding waterbodies near the Ekati Diamond Mine, as part of a Fish Habitat Compensation Agreement between BHP Billiton Diamonds Inc. and Fisheries and Oceans Canada. The study assessed fish species distribution, abundance, and habitat utilization across lakes, streams, and ponds to establish baseline conditions prior to planned habitat restoration and enhancement activities.
This report documents a fish population survey of Cell E of the Long Lake Containment Facility at the Ekati Diamond Mine conducted in August 2003, comparing 22 biological variables with pre-development conditions from 1994 and 1997 to assess the facility's impacts on fish communities. The survey found that most fish population characteristics showed no significant change, with higher catch rates of adult fish but evidence of reduced juvenile recruitment possibly due to loss of spawning habitat caused by dyke construction.
"Introduction to Metal Leaching and Acidic Drainage" — course material from a Northwest Community College workshop September 22-26 2003, instructor Bill Price. Covers ML/ARD definitions and mining relevance, material characterization and prediction, limestone-drain treatment of seepage/subsurface drainage (limited by acid and sulphate loading rates, prone to precipitate clogging), contingency planning for prediction uncertainty, site-specific mitigation, cumulative count of major BC mines with identified ML/ARD concerns (1970-1990 historic-closed/recently-closed/operating categories), and acknowledgements to Mike Aziz (Equity Silver), Kim Bellefontaine (BC MEM), Glenda Ferris, Mark Freberg (Highland Valley Copper), Doug Johnson (Huckleberry Mine), Walter Kuit, Bruce Donald (TeckCominco).
Summary report documenting a May 13-14, 2003 gathering in Yellowknife to discuss implementation of the NWT Cumulative Effects Assessment and Management (CEAM) Blueprint, including priorities, resource requirements, coordination opportunities, and next steps for managing cumulative environmental effects across the Northwest Territories.
This report documents the results of the 2003 spring waste rock storage area seepage survey at Ekati Diamond Mine, conducted in June 2003 in accordance with Water Licence N7L2-1616 requirements. The survey monitored seepage from five waste rock and kimberlite storage areas, measuring field parameters, flow rates, and conducting laboratory analysis of major ions and dissolved metals.
This as-built construction report documents the construction of the Bearclaw Diversion Dam and associated pipeline civil works at the Ekati Diamond Mine from January to May 2003, detailing design compliance, deviations, construction activities, materials testing, and long-term monitoring procedures for the frozen core dam system.
BHP Billiton's HSEC Report 2003 documents the Ekati Diamond Mine's health, safety, environment, and community performance for the fiscal year July 1, 2002 to June 30, 2003, covering operational metrics, environmental management systems, safety achievements, and community consultation outcomes.
This is an integrated Wastewater and Processed Kimberlite Management Plan for the Ekati Diamond Mine covering two water licences, detailing the management of wastewater sources (lake dewatering, pit water, sewage, site drainage) and processed kimberlite disposal at the Long Lake Containment Facility and other settling ponds over the mine's operational life through 2014.
This environmental review by Golder Associates examines the environmental implications of diamond exploration and mining in Canada, analyzing the growth of the Canadian diamond sector, technical aspects of diamond mining operations, environmental management practices, and regulatory frameworks. The report documents environmental concerns and effects from Canada's operating diamond mines (Ekati and Diavik) and provides recommendations for future policy development regarding diamond mining activities in Canada.
A comprehensive reference and workshop manual for the Department of Fisheries and Oceans outlining considerations for protecting fish and fish habitat in the Northwest Territories during development activities. The manual covers regulatory requirements under the Fisheries Act, habitat components, mitigation strategies for construction near water, and spill response procedures.
This waste rock and ore storage management plan for the Beartooth Pipe at Ekati Diamond Mine addresses regulatory requirements for managing drainage from ore and waste rock storage areas. The plan includes geochemical characterization results, predicted water quality, and monitoring strategies for the proposed mining operation.
BHP Billiton's 2002 Environmental Agreement and Water Licences Annual Report documenting compliance, operations, and environmental monitoring activities at the Ekati Diamond Mine in the Northwest Territories, including mine production from multiple pits, water management, waste handling, reclamation research, and comprehensive environmental monitoring programs for aquatic and terrestrial effects.
This 2002 waste rock storage area seepage and waste rock survey report for Ekati Diamond Mine documents monitoring of seepage quality, waste rock geochemistry, and thermal conditions at storage areas including Panda/Koala, Misery, and the Coarse Kimberlite Reject Storage Area. The report fulfills Water Licence N7L2-1616 requirements and includes detailed investigations of low pH waters observed since 1999, with findings on sulphate concentrations, acid generation potential, and freeze-concentration effects in seepage.
This final report describes a comprehensive study of the lethal and sublethal effects of total dissolved solids (TDS) on salmonid embryos and juveniles, including acute and chronic exposure bioassays across multiple species (coho, chum, king, pink, steelhead salmon, and arctic char). The research found that fertilization was the most sensitive developmental stage to TDS exposure, with significant effects observed at concentrations as low as 250 ppm, and that different salmonid species exhibited varying sensitivities to TDS.
BHP Billiton's re-evaluation and refinement report proposes modifications to the Aquatic Effects Monitoring Program (AEMP) for 2003-2007, evaluating sampling locations, monitoring frequencies, and analytical approaches based on historical data analysis and stakeholder consultation. The report recommends adding Leslie Lake to monitoring, continuing triennial monitoring of Little Lake, retaining Vulture Lake as a reference site, and refining seasonal sampling protocols for phytoplankton and zooplankton.
This Acid/Alkaline Rock Drainage and Geochemical Characterization Plan for the Beartooth Pipe at Ekati Diamond Mine describes predictive testing, operational monitoring, and waste rock management strategies to assess potential environmental impacts from mining waste rock storage. Geochemical testing indicates that biotite granite (>99% of waste rock) has low reactivity, while biotite schist and kimberlite require segregation and encapsulation strategies to prevent acid generation and control drainage chemistry.
Tailings Management Binder 2 (2002-2008) for the Ekati Diamond Mine (BHP Billiton). Correspondence between Eric Denholm (BHPB), Sarah Baines (WLWB), Kathleen Racher (DIAND), Tony Pearse (IEMA / Agency), Jim Millard (Environmental Specialist BHP), John Witteman (Environmental Manager BHP), Violet Camsell-Blondin (WLWB Chair). Includes BHPB comments on LLCF water quality model reviews, Wastewater and Processed Kimberlite Management Plan (WPKMP) Conformity Table for Water Licence N7L2-1616 (Section F.1.a.i comprehensive source description), interim water quality objective for chloride from Tier I Ecological Risk Assessment, calcium chloride questions, and kimberlite-and-silicosis discussion.
This document presents the Acid/Alkaline Rock Drainage (ARD) and Geochemical Characterization Plan for the Pigeon Pipe at the Ekati Diamond Mine, prepared by SRK Consulting for BHP Billiton Diamonds to meet Water License MV2001L2-0008 conditions. The plan describes geochemical testing results, waste rock management strategies, and monitoring protocols for host rocks (biotite granite, diabase, biotite schist) and kimberlite, incorporating adaptive management based on operational experience from the Panda and Misery pipes.