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844 documents · Page 40 of 43

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Waste Rock Leaching 1995 Baseline Study Update, Predictions of Dissolved Concentrations in Waste Rock Drainage, NWT Diamonds Project (BHP Billiton, December 1995)
1 December 1995Report
This 1995 baseline study by BHP Diamonds Inc. predicts dissolved metal concentrations in waste rock drainage from the NWT Diamonds Project using static and kinetic geochemical tests. The study forecasts that most waste rock will generate neutral pH drainage, with small percentages capable of producing acidic or alkaline drainage, and provides maximum predicted concentrations for six metals (aluminum 0.2 mg/L, chromium 0.015 mg/L, copper 0.02 mg/L, lead 0.001 mg/L, nickel 0.02 mg/L, zinc 1 mg/L) at pH 8.0 equilibrium conditions.
Waste Rock Acid Rock Drainage Geochemistry
Baseline Information on Eskers, NWT Diamonds Project (BHP Billiton, December 1995)
~1995Report
Approximate date — inferred from filename
This technical report documents baseline information on eskers in the NWT Diamonds Project area, including their geologic features, physical effects of exploration activities, biological importance to wildlife (caribou, bears, wolves, foxes, birds, small mammals), and traditional archaeological and cultural significance to Dene and Inuit peoples. The report addresses quarrying plans for the Airstrip Esker and Lac du Sauvage Esker as sources of construction materials and analyzes potential impacts on wildlife corridors and carnivore denning habitats.
Exploration Development Plans Waste Rock Traditional Knowledge Monitoring
Ecological Mapping 1995 Baseline Study Update, NWT Diamonds Project, Lac de Gras (BHP Billiton, December 1995)
1 December 1995Report
BHP Diamonds Inc. conducted a 1995 baseline ecological mapping study of the 190,000-hectare NWT Diamonds Project area near Lac de Gras, classifying 11 tundra ecosystem types and assessing their sensitivity to development impacts. The report provides integrated terrain and vegetation maps, wildlife habitat capability assessments for geese, caribou and grizzly bears, and evaluations of ecosystem vulnerability to vehicular traffic and air quality impacts.
Monitoring Habitat Assessment Caribou
Baseline Information on Permafrost, EIS Additional Information Section 8 (BHP Billiton, 1995)
~1995Regulatory Filing
Approximate date — inferred from filename
This document responds to a regulatory panel request for baseline information on permafrost conditions at the BHP Diamonds (Ekati) project. It describes existing permafrost data collected since 1993 through boreholes, thermistor cables, and ground-penetrating radar surveys, confirms permafrost thickness of 230–280 m, identifies future geotechnical investigation needs for secondary structures, and documents minor thermally induced ground instability encountered during exploration and construction.
Monitoring Development Plans Regulatory Closure & Reclamation
Meteorology, Hydrology and Water Quality Baseline Study Update, NWT Diamonds Project (BHP Billiton, December 1995)
1 December 1995Report
BHP Diamonds Inc. submitted a 1995 baseline environmental study update documenting meteorology, hydrology, and water quality monitoring in the NWT Diamonds Project area. The report presents data from three weather stations showing 40% higher precipitation than 1994, 14 hydrometric stations monitoring stream and lake hydrology with peak flows approaching 1-in-100 year flood event levels, and water quality analysis from 11 sites indicating localized effects in Kodiak Lake from Panda Lake Diversion Channel construction while Slipper Lake outlet water quality remained unchanged.
Aquatics Aquatic Effects Monitoring (AEMP)Water Quality Development Plans
A Preliminary Evaluation of the Lethal and Sub-lethal Toxicities to Fish of Effluents from Diamond Exploration in the Lac de Gras Area (DFO, November 1995)
7 November 1995Report
This independent toxicity assessment evaluates the lethal and sub-lethal effects of kimberlite effluents from diamond exploration activities in the Lac de Gras region on freshwater fish species (lake whitefish, lake trout, and rainbow trout), and identifies toxic components including high pH, suspended solids, and various metals such as aluminum, iron, and nickel.
Aquatics Water Quality Fish Habitat
Review Comments on BHP's Environmental Impact Statement (EIS) (Health Canada, October 23, 1995)
23 October 1995Regulatory Filing
Health Canada's review of BHP's Environmental Impact Statement for a diamond mining project, providing comments on conformity with EIS guidelines and identifying deficiencies regarding radiological hazards, particularly radon gas exposure and the need for baseline radioactivity monitoring in ore and environmental compartments.
Development Plans Air Quality Monitoring Waste Rock
Conformity Report on the NWT Diamonds Project Environmental Impact Statement (GNWT, October 1995)
23 October 1995Regulatory Filing
The Government of the Northwest Territories submitted a conformity report evaluating BHP's Environmental Impact Statement for the NWT Diamonds Project against the May 1995 EIS Guidelines, identifying major and minor deficiencies including inadequate treatment of traditional knowledge, incomplete environmental management plans, spatial boundary limitations, knowledge gaps in wildlife ecology and waste management, and insufficient detail on monitoring programs and mitigative measures.
Development Plans Regulatory Traditional Knowledge Waste Rock
Comments on Environmental Impact Statement (EIS), Ekati Diamond Mine (Health Canada, October 23, 1995)
23 October 1995Letter
Health Canada's review of BHP's Environmental Impact Statement for the Ekati Diamond Mine, identifying conformity with EIS guidelines but noting deficiencies in radiological risk assessment, particularly regarding radon gas exposure and incomplete baseline radioactivity data for ore and natural compartments.
Correspondence Development Plans Regulatory Air Quality Water Quality
Submission on Deficiencies of the BHP Environmental Impact Statement, NWT Diamonds Project (Coronation Impact Review Committee, October 1995)
23 October 1995Regulatory Filing
The Coronation Impact Review Committee submits a detailed critique of BHP's Environmental Impact Statement for the NWT Diamonds Project (Ekati Mine), identifying deficiencies in consultation with Inuit under the Nunavut Land Claim Agreement, inadequate monitoring programs for aquatic ecosystems, and insufficient consideration of impacts to Lac De Gras, the Coppermine River, and traditional Inuit harvesting. The submission includes a technical report by environmental consultant Vince P. Palace recommending comprehensive pre-project baseline data collection and enhanced biomonitoring throughout mine operations to detect potential disturbances to fish populations and water quality.
Development Plans Traditional Knowledge Aquatics
Analysis of Conformity of BHP's EIS to the Guidelines Concerning Traditional Knowledge (Dene Cultural Institute, October 1995)
23 October 1995Regulatory Filing
The Dene Cultural Institute submits a formal analysis criticizing BHP's Environmental Impact Statement for failing to provide full and equal consideration of traditional knowledge as required by Panel Guidelines, and argues that BHP's compressed timeline for community-based research resulted in incomplete and inadequate documentation of aboriginal knowledge about the Lac de Gras area. The Institute recommends establishing commonly-accepted traditional knowledge research standards and calls for a workshop to address methodological and ownership issues in TEK documentation.
Traditional Knowledge Development Plans Wildlife Monitoring
Technical Evaluation of the BHP NWT Diamond Project Environmental Impact Statement (Environment Canada, October 1995)
23 October 1995Regulatory Filing
Environment Canada provides a detailed technical evaluation of BHP's Environmental Impact Statement for the proposed diamond mine at Lac de Gras, identifying significant deficiencies in environmental assessment and recommending extensive supplemental information and monitoring programs across hydrology, air quality, waste management, and wildlife protection.
Development Plans Regulatory Waste Rock
Review Comments on the BHP Environmental Impact Statement (Health Canada, October 1995)
23 October 1995Letter
Health Canada reviews BHP's Environmental Impact Statement for the diamond mine project, finding human health information largely conforming to guidelines except for deficiencies regarding radon gas exposure risk assessment. The review requires the proponent to analyze ore and environmental samples for radioactive source terms and establish a radon gas monitoring program to ensure compliance with radiation regulations.
Development Plans Air Quality Monitoring Regulatory
Conformity and Quality Analysis of BHP Diamonds Inc.'s Environmental Impact Statement, NWT Diamonds Project (DIAND, October 1995)
23 October 1995Regulatory Filing
DIAND's Conformity and Quality Analysis of BHP Diamonds Inc.'s Environmental Impact Statement for the proposed NWT Diamonds Project, submitted July 23, 1995. The analysis concludes that while the EIS substantially addresses guideline requirements, there are significant deficiencies in six main areas: terrain and permafrost characterization, waste management, water management, traditional knowledge integration, monitoring programs, and cumulative effects assessment.
Development Plans Regulatory Traditional Knowledge
Analysis of Conformity of BHP Diamonds Inc. NWT Diamonds Project Environmental Impact Statement to Panel Guidelines Concerning Traditional Knowledge (Dene Cultural Institute, October 1995)
23 October 1995Regulatory Filing
The Dene Cultural Institute submits its analysis of BHP's Environmental Impact Statement for the NWT Diamonds Project, finding that the EIS fails to provide full and equal consideration of traditional knowledge as required by guidelines. The Institute criticizes BHP's insufficient primary research with aboriginal communities and lack of adequate time and resources for proper traditional knowledge documentation, and recommends establishing commonly-accepted traditional knowledge research standards.
Traditional Knowledge Development Plans Correspondence Monitoring
Conformity and Quality Analysis, BHP Diamonds Inc. Environmental Impact Statement, NWT Diamonds Project (DIAND, October 1995)
1 October 1995Regulatory Filing
DIAND's conformity and quality analysis of BHP Diamonds Inc.'s Environmental Impact Statement for the proposed NWT Diamonds Project, submitted July 1995, concluding that while the EIS substantially addresses guideline information requirements, significant deficiencies exist in terrain and permafrost characterization, waste management planning, water management rationale, traditional knowledge integration, monitoring programs (particularly post-closure), and cumulative effects assessment.
Development Plans Regulatory Monitoring
Curriculum Vitae, Peter James McCart, Expert Witness (Northern Environmental Coalition, September 1995)
19 September 1995Unknown / Unclassified
Curriculum vitae of Peter James McCart, a fisheries scientist and biological consultant with extensive expertise in aquatic ecosystem assessment, fish population studies, and environmental impact analysis across Arctic and sub-Arctic regions. The document details his education, 40+ years of career experience with major energy and development projects, expert testimony, scientific publications, and comprehensive company reports on fish and aquatic habitat impacts from pipeline, mining, and hydroelectric projects.
Aquatics Fish Habitat Monitoring Water Quality
Spatial Distribution of Snow Chemical Load at the Tundra Taiga Transition (Pomeroy & Marsh, July 1995)
1 July 1995Report
This paper examines spatial variation in snow chemical composition and accumulation along a 200-km transect spanning the tundra-taiga transition near Inuvik, Northwest Territories. The study shows that ion loads vary up to 18-fold between mesoscale sites and demonstrate that both local landscape factors (vegetation roughness) and broad-scale influences (blowing snow, proximity to ocean) must be considered to predict snow quantity and chemistry in windswept Arctic environments.
Water Quality Monitoring Air Quality Waste Rock
A Review of the Environmental Effects of Diamond Mining, Chapter 6: Conclusions and Recommendations (BHP Billiton, 1995)
~1995Report
Approximate date — inferred from filename
This document presents conclusions and recommendations from a review of environmental effects of diamond mining on aquatic, riparian, and terrestrial ecosystems. It identifies significant potential effects from mining activities and recommends additional research, toxicity testing, environmental monitoring, and data collection from operating mines in northern climates to better understand and mitigate these impacts.
Development Plans Aquatics Water Quality
Questionnaire for Key Contacts, Review of the Environmental Effects of Diamond Mining (Environment Canada, 1995)
~1995Unknown / Unclassified
Approximate date — inferred from filename
A structured questionnaire commissioned by Environment Canada to collect information from diamond mining industry key contacts about environmental effects of diamond mining activities, covering exploration, mining operations, water use, waste management, tailings, open pits, and mine reclamation to support decision-making in northern Canada.
Development Plans Monitoring Exploration

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844 documents · Page 40 of 43