Find documents by name, keyword, or question across the IEMA Ekati archive.
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.
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.
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.
BHP Billiton's 2002 Environmental Agreement and Water Licences Annual Report documents the Ekati Diamond Mine's environmental performance, compliance with four water licences, and ongoing monitoring programs including aquatic effects, wildlife impacts, and reclamation research across the Lac de Gras watershed in the Northwest Territories.
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 BHP Billiton Spill and General Contingency Plan for the Ekati Diamond Mine outlines spill response procedures, emergency contacts, organizational responsibilities, and preventative measures for handling hydrocarbon fuels, chemicals, and other hazardous materials at the mine site and associated transportation corridors in the Northwest Territories.
This report evaluates the toxicity of nitrates to early life stages of salmonid fish, with specific application to wastewater from the Ekati Diamond Mine in the Northwest Territories. The analysis examines the Kincheloe et al. (1979) research indicating nitrate toxicity at concentrations around 10 mg/L and recommends this as a tentative water quality criterion, while noting that Moose Lake currently shows rising but still acceptable nitrate levels.
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).
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.
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.
This technical report reviews applicable technologies for managing mining effluents in the Northwest Territories, covering operating and historical mines, regulatory requirements, mining and processing methods, and best available treatment technologies tailored to northern climate and geographic conditions.
BHP Billiton Diamonds Inc. submits a presentation to the Mackenzie Valley Land and Water Board for a public hearing on April 4-5, 2002, regarding water licence and land use permit applications for the Sable, Pigeon, and Beartooth kimberlite pipe developments at Ekati Diamond Mine, detailing proposed dewatering, water management, waste rock handling, effluent discharge criteria, environmental monitoring, and abandonment/reclamation strategies.
Fisheries and Oceans Canada (DFO Fish Habitat Management, Yellowknife) binder including the March 12 2002 letter to Mackenzie Valley Land and Water Board, the Review and Evaluation of the BHP Billiton Application for Class "A" Water Licence covering long-range atmospheric transport of pollutants and climate-change watershed impacts, Water Management Plan revision recommendations, AEMP expanded geographic scope, and the MVLWB Public Hearing intervention on BHP Billiton's Class A Water Licence Application for development of the Sable, Pigeon and Beartooth kimberlite pipes (Laurie Cordell / Sevn Bohnet DIAND).
This is an educational presentation on ground ice distribution, classification, and engineering properties in permafrost terrain, covering origins of ground ice, water content, and three design approaches (thawing, freezing, and frozen) with case examples from permafrost engineering projects.
This Master of Science thesis by Karen Patricia Graham investigates the adsorption of phosphorus from wastewater effluent onto kimberlite tailings in BHP's Ekati Diamond Mine's processed kimberlite containment area through controlled laboratory isotherm studies. The research determines that approximately 0.5 kg of dried kimberlite per litre of wastewater effluent is needed at 18°C to reduce phosphorus concentration from 10 mg/L to 0.1 mg/L, with results showing that coagulant and flocculant addition does not affect phosphorus adsorption, and pH and temperature changes do not cause desorption.
This technical report presents results of the 2001 Kodiak Lake Sewage Effects Study, the second year of follow-up monitoring after a three-year specialized study (1997-1999) examining effects of treated sewage effluent discharge on the lake's aquatic ecosystem. The study found that Kodiak Lake has mostly recovered from eutrophication caused by past nutrient introduction, though current project activities (particularly the Panda Diversion Channel) continue to introduce elevated nitrate concentrations.
This preliminary Wastewater and Processed Kimberlite Management Plan for the Ekati Diamond Mine describes comprehensive waste water management strategies and processed kimberlite disposal methods for the mine's 17-year operational life, including details on lake dewatering, pit water management, the Long Lake Containment Facility, and remote site operations at Misery and Sable.
This preliminary wastewater and processed kimberlite management plan for the Ekati Diamond Mine describes treatment and disposal strategies for all wastewater sources including lake dewatering, process plant drainage, pit water, and sewage, with detailed specifications for the Long Lake Containment Facility and separate management plans for Misery and Sable sites. The plan addresses water quality criteria, retention times, discharge volumes, and monitoring requirements over the 17-year mine life through 2014.
This is a comprehensive data report from the 2001 Kodiak Lake Sewage Effects Study conducted by Rescan Environmental Services for BHP Billiton Diamonds Inc., presenting all environmental monitoring data collected from Kodiak Lake and surrounding areas near the Ekati Diamond Mine in the Northwest Territories, including water quality, sediment quality, hydrology, and aquatic biology parameters.