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Final design report for Bearclaw Diversion Dam at Ekati Diamond Mine, a frozen core rockfill dam designed to divert water from Bearclaw Lake around the proposed Beartooth Pit during open-pit mining. The report presents thermal and stability analyses, construction plans, and monitoring requirements for this high-consequence structure.
Desperation Pond West Cofferdam As-Built Construction Report for the Ekati Diamond Mine (BHP Billiton Diamonds Inc., Project No. 0101-94-11580.058), October 2002, prepared by EBA Engineering Consultants Ltd. Documents construction of the West Cofferdam with 184,450 m³ water storage at 1 m freeboard, key-trench excavation with Cat 345 excavator at Sta. 0+070, levelling-course compaction with Cat CS-563C vibratory compactor, fillet-zone placement with Cat D4H bulldozer (Sta. 0+040 to 0+060), and EBA Aggregate Analysis Report (200 mm sieve summary, March 5 2002 sample).
Technical specifications and construction drawings for the installation of three stream crossings (SR-3, SR-4, SR-5) along Sable Road at Ekati Diamond Mine, including detailed requirements for culvert placement, foundation preparation, fill materials, and seepage collar installation.
This No Net Loss Plan documents fish and fish habitat impacts from BHP Billiton's proposed development of three kimberlite pipes (Sable, Pigeon, and Beartooth) at the Ekati Diamond Mine in the Northwest Territories, and outlines habitat compensation strategies to comply with the federal Fisheries Act and DFO's No Net Loss policy.
This information note outlines the environmental assessment process established by the Mackenzie Valley Environmental Impact Review Board under the Mackenzie Valley Resource Management Act, detailing major steps from notification through EA decision and written reasons. The document explains how the Review Board determines scope, manages consultation, conducts technical analysis, and ultimately determines whether development can proceed with or without restrictions, or requires further review.
Draft procedural rules for the Mackenzie Valley Environmental Impact Review Board governing environmental assessment and environmental impact review proceedings under the Mackenzie Valley Resource Management Act. The rules establish protocols for notice, participation, information disclosure, hearings, and Board decision-making.
Correspondence binder August 15 2002 – September 15 2004 for the Independent Environmental Monitoring Agency (IEMA / Agency) covering the Ekati Diamond Mine. Includes North Slave Metis Alliance (NSMA) request for intervener funding from MVLWB (Stephen Nielson), JCSFOS 2003-002 Final Report for ASTF Grant #98-1-012 "Salmon as a Bioassay Model of Effects of Total Dissolved Solids" (Alaska Science and Technology Foundation, Anchorage), NWT CEAM Blueprint Implementation Gathering May 13-14 2003 (Katimavik Rooms, Explorer Hotel Yellowknife — Participant Resource Binder), Mackenzie Valley Land and Water Board correspondence (April 2003), and ongoing BHP Billiton Diamonds Inc. correspondence to IEMA (Zabey Nevitt).
EBA Engineering completed the annual water licence geotechnical inspection of five water-retaining structures at Ekati Diamond Mine between July 19–23, 2002, documenting observations on stability, water levels, ground temperatures, seepage, and settlement at Phase 1 Pond, Panda Diversion Dam, Long Lake Outlet Dam, Intermediate Dyke B, and King Pond Dam.
This report documents the results of the 2002 spring waste rock storage area seepage survey at Ekati Diamond Mine, conducted in June 2002 in accordance with Water Licence N7L2-1616 requirements. The survey monitored seepage quality from multiple waste rock and kimberlite storage areas, including chemical analysis of water samples for pH, conductivity, major ions, nutrients, and metals.
BHP Billiton Diamonds Inc. submits habitat unit calculations for Leslie Lake to the Department of Fisheries and Oceans in support of a Fisheries Authorization Application for the Sable, Pigeon, and Beartooth Kimberlite Pipes. The document provides baseline fisheries data, habitat zone mapping, and weighted habitat unit calculations for three target fish species (Arctic grayling, lake trout, and round whitefish) based on 1994 survey data.
BHP Billiton Diamonds Inc. requests a Section 35(2) Fisheries Authorization from the Department of Fisheries and Oceans for the proposed expansion of the Ekati Mine to include development of the Sable, Pigeon, and Beartooth kimberlite pipes, exercising its substitution right under the 1996 Fish Habitat Compensation Agreement by removing Leslie Lake from the development plan and offsetting habitat impacts through the proposed developments.
East Desperation Pond Cofferdam As-Built Construction Report for the Ekati Diamond Mine (BHP Billiton Diamonds Inc., Project No. 0101-94-11580.058), July 2002, prepared by EBA Engineering Consultants Ltd. Includes the As-Built Construction Drawings package (Drawing Index: 11580.058-DPAB01 General Location and Misery Site Plan), UTM Coordinates (NAD 83), East Cofferdam construction sequence (GCL Liner placement at elevations 5.10 / 2.95 / 2.15 / 0.75 m), and loading-ramp configuration for front-end-loader external-feed hopper with Grizzly conveyor.
This technical design report describes a prototype surplus water atomization system for the Ekati Diamond Mine's Misery Pit development, designed to treat approximately 400,000 m³ of water annually through atmospheric dispersion and land treatment to reduce ammonia and nitrate concentrations before discharge to Cujo Lake. The system combines air stripping with tundra infiltration and biological treatment by existing microbial communities to complement traditional sedimentation pond methods and mitigate risks of exceeding water licence criteria.
Monthly water surveillance report for May 2002 submitted by BHP Diamonds Inc. to the Mackenzie Valley Land and Water Board, documenting water sampling results from four stations, flow/volume measurements from multiple mine lakes and ponds, waste rock disposal quantities, and associated weather data in compliance with water licence N7L2-1616.
A compilation index of environmental assessment documents and correspondence related to diamond mining projects (DeBeers Snap Lake, Diavik) and other mining developments in northern Canada, including regulatory framework documents, technical reports, and consultation records spanning 1996–2002.
A training handout by DIAND outlining seven steps to perform risk assessments for mining operations, focusing on system boundaries definition, hazard identification, failure mode evaluation, likelihood and consequence assessment, and risk determination using both qualitative and quantitative methodologies.
KOMEX International prepared a probabilistic reclamation liability estimate for the Sable, Pigeon, and Beartooth Pits at the Ekati Diamond Mine using a Monte Carlo Simulation Model, providing cost projections for 2005, 2010, and 2014 to establish security deposit requirements under the Type A Water License and Environmental Agreement.
Public hearing conducted by the Mackenzie Valley Land and Water Board on April 4-5, 2002, to consider BHP Billiton's applications for water licenses and land use permits for expansion of mining activities at the Ekati Diamond Mine, specifically for development of the Sable, Pigeon, and Beartooth kimberlite pipes. The hearing included presentations from BHP Billiton on dewatering, construction, water management, waste rock handling, and reclamation plans, with testimony from engineering and environmental specialists.
Tony Pearse presents the Independent Environmental Monitoring Agency's oral submission to the Mackenzie Valley Land and Water Board regarding BHP-Billiton's water licence and land-use permit applications for the Sable, Pigeon, and Beartooth pipe developments. The presentation highlights deficiencies in application information and proposes recommendations on issues including fish diversion channel design, waste rock seepage control, geochemical characterization sampling adequacy, aquatic effects monitoring, and closure security provisions.
Public hearing transcript from April 4-5, 2002, before the Mackenzie Valley Land and Water Board regarding BHP Billiton's applications for water licenses and land use permits for expansion of mining activities at the Sable, Pigeon, and Beartooth kimberlite pipes at the Ekati Diamond Mine. The hearing presents BHP Billiton's project overview, dewatering plans, construction activities, wastewater management, waste rock management, and reclamation approach, all claimed to use proven methods from existing Ekati operations.