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821 documents · Page 36 of 42

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Submission to the NWT Diamond Project Federal Environmental Assessment Review Panel (Lutsel K'e First Nation, January 1996)
~1996Regulatory Filing
Approximate date — inferred from filename
The Lutsel K'e First Nation submission to the NWT Diamonds Project Federal Environmental Assessment Review Panel opposes the BHP/Diamet mine project pending recognition of their aboriginal rights, title, and jurisdiction in the Akaitcho Territory, and the establishment of a holistic environmental planning and monitoring system based on self-governance.
Traditional Knowledge Development Plans Correspondence Environmental Agreement
Wind Blown Snow, Sublimation, Transport and Changes to Polar Snow (National Hydrology Research Institute, 1996)
~1996Report
Approximate date — inferred from filename
This academic paper reviews the physics and chemistry of wind-blown snow in polar regions, examining how wind transport, sublimation, and atmospheric processes alter snow accumulation rates and chemical composition. The authors present models for calculating blowing snow transport and sublimation fluxes, discuss mechanisms of chemical transformation including scavenging and volatilisation, and synthesize experimental evidence from Antarctic, Arctic, and temperate locations to explain spatial and temporal variations in ice core chemistry.
Monitoring Air Quality Water Quality
Water Licensing in the Northwest Territories, Summary of Procedures and Information Requirements (NWT Water Board, January 1996)
1 January 1996Report
A comprehensive guide outlining water licensing procedures and information requirements in the Northwest Territories, including which undertakings require licences, application processes for Type A and Type B projects, required documentation, and contact information for relevant regulatory agencies.
Regulatory Water Licence Water Quality Development Plans
NWT Diamonds Project Environmental Impact Statement, Additional Information Response Part C (BHP Billiton, January 1996)
1 January 1996Regulatory Filing
BHP's Additional Information Response to Part C of the NWT Diamonds Project Environmental Impact Statement addresses 17 panel questions and information gaps identified during the EIS review, covering spillway functions, water flow patterns, wildlife management, off-road vehicle policies, employment and socio-economic impacts, chemical effects of flocculants and ferrosilicon, and various technical clarifications on mine operations and closure.
Development Plans Water Quality Closure & Reclamation Waste Rock
Material Characterization: Will the Material Produce Significant Metal Leaching? (BHP Billiton, unknown)
~1996–2001Presentation
A lecture on material characterization for predicting metal leaching and acid rock drainage from mine waste, covering elemental composition analysis, weathering processes, dissolution and solubility controls, drainage chemistry prediction methods, and monitoring approaches for assessing environmental impacts of mining materials.
Waste Rock Acid Rock Drainage Geochemistry
Curriculum Vitae, David W. Schindler (Northern Environmental Coalition, January 1996)
1 January 1996Unknown / Unclassified
Curriculum vitae of David William Schindler, a renowned limnologist and ecologist documenting his education, scientific employment, awards, committee memberships, and extensive publications (1962-1996 and in press) primarily focused on experimental lake studies, acidification, eutrophication, and aquatic ecosystem responses to environmental stressors.
Aquatics Water Quality Monitoring
Tailings Management Plan, NWT Diamonds Project (EBA Engineering, December 1995)
15 December 1995Report
This tailings management plan for the BHP Diamonds Project describes the design and operation of a 133-million-tonne tailings disposal system using Long Lake basin in the Northwest Territories, including perimeter dams, intermediate dykes, water management strategies, and long-term reclamation to restore the site to a wetland environment.
Waste Rock Kimberlite Tailings Closure & Reclamation
Air Quality Monitoring Program Records, Ekati Diamond Mine (BHP Billiton, 1995 to 2005)
1 December 1995Regulatory Filing
This document is BHP Billiton's December 1995 response to the panel's request for additional information on monitoring programs for the NWT Diamonds Project (Ekati), detailing adaptive management criteria, thresholds, and monitoring sensitivity for water, land, air, wildlife, and socioeconomic parameters, along with establishing an independent Environmental Advisory Group. The second section (dated March 2004) presents Rescan Environmental Services' proposal to update the EKATI air dispersion model using ISC3, incorporating current meteorological data, terrain, emissions inventories, and cumulative effects assessment with the Diavik mine.
Development Plans Monitoring Water Quality Waste Rock
Baseline Study Update, Meteorology, Hydrology and Water Quality, Ekati Diamond Mine (BHP Billiton, December 1995)
1 December 1995Report
BHP Diamonds Inc.'s 1995 baseline study update on meteorology, hydrology, and water quality for the NWT Diamonds Project (Ekati) documents continued monitoring showing 40% higher precipitation than 1994, elevated surface water flows approaching 1-in-100 year event levels, and localized water quality impacts in Kodiak Lake from the Panda Lake Diversion Channel construction, while downstream water quality at Slipper Lake outlet remained unchanged.
Monitoring Water Quality Air Quality Regulatory
Meteorology, Hydrology and Water Quality 1995 Baseline Study Update (BHP Billiton, December 1995)
1 December 1995Report
This 1995 baseline study update reports meteorological, hydrological, and water quality monitoring for the NWT Diamonds Project (Ekati Mine) in the Koala/Long Lake watershed. The year was characterized by significantly higher precipitation (40% above 1994 and baseline estimates), resulting in elevated streamflows and lake levels that approached 1-in-100-year flood event magnitudes, with observed peak flows correlating well with regional historical data; water quality analysis showed localized effects in Kodiak Lake and elevated metals in the Panda Diversion Channel, though no significant changes were observed in Slipper Lake, the watershed outlet.
Monitoring Water Quality Air Quality Development Plans
Alternatives to Accelerate Pit Water Infilling, EIS Additional Information Request 16 (BHP Billiton, December 1995)
~1995Regulatory Filing
Approximate date — inferred from filename
This document provides BHP's response to a panel request for alternatives to accelerate water infilling of mined-out open pits at the Ekati Diamond Mine, discussing options such as waste rock backfilling, tailings deposition, and surface water diversion, along with their environmental and economic trade-offs for each pit.
Development Plans Closure & Reclamation Aquatics
Baseline Information on Ground Water, EIS Additional Information Response (Section 9, 806d) (BHP Billiton, December 1995)
~1995Regulatory Filing
Approximate date — inferred from filename
This document responds to a panel's request for additional information on baseline ground water data and monitoring plans for the proposed BHP Diamond Mine at Lac de Gras. The proponent describes low predicted groundwater inflows based on permafrost presence and low hydraulic conductivity of granite bedrock, with plans for periodic monitoring of actual pit dewatering rates rather than a comprehensive regional monitoring program.
Water Quality Monitoring Development Plans Waste Rock Regulatory
Monitoring Programs (EIS Additional Information, Section 15) (BHP Billiton, 1995)
~1995Regulatory Filing
Approximate date — inferred from filename
This document is the proponent's detailed response to regulatory panel requests for information on environmental and socioeconomic monitoring programs for the NWT Diamonds Project. It outlines comprehensive monitoring plans for water quality, wildlife, air, land, permafrost, and socioeconomic parameters; describes the establishment of an independent Environmental Advisory Group; and addresses post-closure monitoring commitments and adaptive management thresholds.
Monitoring Water Quality Development Plans
Waste Management Plans, Additional Information Response to Panel Information Request 603a, Ekati Diamond Mine (BHP Billiton, December 1995)
~1995Regulatory Filing
Approximate date — inferred from filename
This document is a detailed response to a regulatory panel's information requests regarding waste management plans for the Ekati Diamond Mine, specifically addressing tailings management, water treatment facilities, nitrogen contamination from ANFO explosives, dam failure scenarios, and waste rock drainage control. The response includes engineering designs for a Long Lake tailings facility with sequential cells, water clarification methods tested during bulk sampling, contingency plans for dam failures, and management practices to minimize ammonia losses from explosive use.
Waste Rock Wastewater Water Quality Regulatory
Fisheries and Aquatic Life Baseline Study Update, Ekati Diamond Mine (BHP Billiton, December 1995)
1 December 1995Report
This 1995 baseline fisheries and aquatic life study documents environmental conditions in the Koala watershed near the proposed Ekati Diamond Mine, establishing baseline data for long-term monitoring of four designated lakes (Vulture, Kodiak, Nema, Slipper) and associated streams. The report presents results of sampling periphyton, larval drift, benthic invertebrates, zooplankton, and fisheries data collected to assess potential mining impacts on aquatic habitat and biota.
Aquatics Aquatic Effects Monitoring (AEMP)Benthic Invertebrates
Tailings Dams Preliminary Design Report, NWT Diamonds Project (EBA Engineering, December 1995)
1 December 1995Report
EBA Engineering Consultants prepared preliminary designs for tailings dams and associated earthworks at the NWT Diamonds Project located 300 km northeast of Yellowknife, featuring four perimeter dams around Long Lake using frozen core technology to retain water and tailings, with extensive thermal and stability analyses to ensure permafrost integrity over a 25-year operational period.
Development Plans Waste Rock Closure & Reclamation Monitoring
NWT Diamonds Project Environmental Impact Statement, Additional Information Response (BHP Billiton, December 1995)
1 December 1995Regulatory Filing
BHP's response to the Review Panel's requests for additional information regarding corporate structure, environmental management systems, and spills during NWT Diamonds Project exploration operations. The document details BHP Diamonds Inc.'s relationship to parent company BHP, Environmental Management System implementation, and documents ten unauthorized discharges that occurred during summer 1994 exploration activities at the Koala site.
Development Plans Environmental Agreement Regulatory Water Quality Waste Rock
NWT Diamonds Project Tailings Management Plan and Preliminary Design of Retention Structures (EBA Engineering, December 1995)
1 December 1995Report
This comprehensive tailings management plan prepared by EBA Engineering Consultants for BHP Diamonds describes the disposal strategy for 133 million tonnes of kimberlite tailings over 25 years of mine operation at the NWT Diamonds Project. The plan details the use of Long Lake basin for tailings storage in five sequential cells, with perimeter dams featuring permafrost cores, intermediate filter dykes, water clarification techniques, and progressive reclamation to restore the landscape to a stable, vegetated wetland environment.
Kimberlite Tailings Waste Rock Closure & Reclamation
Assessment of Impact Significance Methodology, NWT Diamonds Project EIS (BHP Billiton, December 1995)
~1995Regulatory Filing
Approximate date — inferred from filename
This document is a response to panel questions regarding the assessment methodology for impact significance in the NWT Diamonds Project Environmental Impact Statement. It explains how six impact attributes (geographic extent, duration/frequency, reversibility, ecological/social context, probability, and future resource capacity) were integrated into a two-dimensional significance matrix based primarily on spatial and temporal criteria to classify residual environmental effects as major, moderate, minor, or negligible.
Development Plans Wildlife Caribou Air Quality
Sedimentation Ponds Preliminary Design, NWT Diamonds Project (EBA Engineering, December 1995)
~1995Report
Approximate date — inferred from filename
This preliminary design report documents the planned sedimentation pond systems for four kimberlite pit mines (Panda/Koala, Misery, Fox, and Leslie) at the NWT Diamonds Project. The ponds are designed to impound turbid water and soft lake sediments from pit dewatering and to provide settling basins during mine operation, with specific designs for valley ponds and lake basin ponds incorporating pervious dikes, impervious dams, and frozen core structures adapted to permafrost conditions.
Development Plans Wastewater Water Quality Regulatory

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821 documents · Page 36 of 42