Water Quality

Chemical, physical, microbiological water properties, water-licence criteria

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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
Comments on the Conformity of BHP's Environmental Impact Statement with EARP Panel Guidelines (Dogrib Treaty 11 Council, October 1995)
25 October 1995Regulatory Filing
Dogrib Treaty 11 Council submits detailed comments on BHP's Environmental Impact Statement for the NWT Diamonds Project, identifying areas of non-compliance with EARP Panel Guidelines, particularly regarding inadequate incorporation of traditional knowledge, insufficient baseline data on wildlife and caribou, incomplete management plans, and superficial treatment of socio-economic impacts on Dogrib communities.
Traditional Knowledge Development Plans Wildlife
Comments on the Conformity of BHP's Environmental Impact Statement with the EARP Panel Guidelines, NWT Diamonds Project (Dogrib Treaty 11 Council, October 1995)
25 October 1995Report
The Dogrib Treaty 11 Council submits detailed comments on BHP's Environmental Impact Statement for the NWT Diamonds Project, identifying deficiencies in conformity with EARP Panel Guidelines, particularly regarding insufficient integration of traditional knowledge, inadequate wildlife and habitat baseline data, incomplete assessment of socio-economic impacts on Dogrib communities, and gaps in management plans for wildlife, fisheries, and emergency response.
Development Plans Traditional Knowledge Wildlife
Conformity Review of the BHP Diamond Mine Environmental Impact Statement (EIS) (Nunavut Tunngavik Inc., October 1995)
24 October 1995Regulatory Filing
Nunavut Tunngavik Inc. submits a detailed critique of BHP's Environmental Impact Statement for the proposed diamond mine at Lac de Gras, arguing the EIS is deficient in water quality analysis, post-closure monitoring plans, and consultation with Kitikmeot Inuit regarding land claims and compensation agreements under the Nunavut Land Claims Agreement.
Development Plans Water Quality Traditional Knowledge Wildlife
Submission to BHP Environmental Assessment Panel on Deficiencies of the BHP EIS with Reference to the Panel's Final Guidelines, EIS020 (Kitikmeot Inuit Association, 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, identifying deficiencies in consultation with Inuit populations, inadequate monitoring programs for aquatic resources, and insufficient consideration of impacts to the Coppermine River and Lac de Gras. The submission includes a technical report by consultant Vince P. Palace recommending comprehensive pre-project baseline data collection and ongoing biomonitoring of fish populations, suspended particulates, inorganic and organic contaminants, and sediment throughout the mine's operating life.
Traditional Knowledge Aquatics Water Quality
Conformity Report, NWT Diamonds Project Environmental Impact Statement (GNWT, October 1995)
23 October 1995Regulatory Filing
The Government of the Northwest Territories' conformity review of the BHP NWT Diamonds Project Environmental Impact Statement, identifying major deficiencies in traditional knowledge integration, environmental management plans, spatial boundaries, wildlife assessment, socio-economic impacts, and monitoring programs, while concluding that the EIS can be brought into compliance relatively quickly through additional analysis and field work results.
Development Plans Regulatory Traditional Knowledge
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
Conformity Comments on BHP Diamond Mine Environmental Impact Statement (Nunavut Tunngavik Incorporated, October 1995)
23 October 1995Report
Nunavut Tunngavik Inc. (NTI) submits conformity comments on the BHP Diamond Mine Environmental Impact Statement, asserting that the EIS is deficient in water quality analysis, long-term post-closure monitoring, and consultation with Kitikmeot Inuit regarding land claim rights and potential water impacts to the Coppermine River. NTI recommends the panel require BHP to answer supplemental questions and initiate compensation negotiations with the Kitikmeot Inuit Association before proceeding to public hearings.
Development Plans Correspondence Traditional Knowledge Closure & Reclamation Regulatory
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
Comments on the BHP Diamond Mine Environmental Impact Study (Lutsel K'e Dene Band, October 1995)
23 October 1995Letter
The Lutsel K'e Dene Band submits comments to the Environmental Assessment Panel regarding the BHP Diamond Mine Environmental Impact Study, expressing concerns about inadequate consultation, resource constraints, and lack of meaningful participation in the decision-making process for the proposed Lac de Gras project.
Traditional Knowledge Development Plans Yellowknives Dene Wildlife Water Quality
Environmental Impact Statement Adequacy Support Letter, BHP NWT Diamonds Project (NWT Chamber of Mines, October 1995)
23 October 1995Letter
The NWT Chamber of Mines submits a letter supporting the adequacy of the Environmental Impact Statement for the proposed BHP NWT Diamonds Project, arguing it is comprehensive and comparing the project favorably to existing northern mining operations in terms of physical footprint, environmental impact, and economic benefits.
Development Plans Correspondence Regulatory Wildlife Water Quality
Response to the BHP/Diamet Environmental Impact Statement (Northern Environmental Coalition (NEC), October 1995)
23 October 1995Regulatory Filing
The Northern Environmental Coalition's comprehensive response to the BHP/Diamet Environmental Impact Statement for the proposed Ekati Diamond Mine identifies significant omissions and deficiencies across five major areas: biological impacts, cumulative effects, reclamation, socio-economic impacts, and traditional knowledge. The response critiques the EIS for inadequate treatment of wildlife management, water quality monitoring, fish habitat protection, and failure to conduct true cumulative effects assessment.
Development Plans Wildlife Aquatics
Conformity Analysis & Technical Review of the BHP Environmental Impact Statement (DFO, October 1995)
20 October 1995Regulatory Filing
The Department of Fisheries and Oceans provides a conformity analysis and technical review of the Environmental Impact Statement for BHP Diamonds Inc.'s proposed NWT Diamonds Project in the Lac de Gras area. DFO identifies multiple deficiencies in baseline data, fish habitat assessment, and mitigation planning while concluding that public hearings can proceed, noting that 1995 field studies will address many information gaps.
Aquatics Fish Habitat Development Plans
Comments on the BHP/DiaMet Environmental Impact Statement (Dene Nation, October 1995)
20 October 1995Letter
The Dene Nation submits a letter of intervention on the BHP/Diamet diamond mine Environmental Impact Statement, identifying major deficiencies in both the review process and EIS content, including inadequate consultation with Dene communities, insufficient translation of technical documents, and failure to properly incorporate traditional knowledge in impact assessment.
Development Plans Traditional Knowledge Correspondence Water Quality
Conformity Analysis and Technical Review of the Environmental Impact Statement for the Proposed BHP Diamonds Inc. NWT Diamonds Project (DFO, October 1995)
20 October 1995Regulatory Filing
The Department of Fisheries and Oceans provides a conformity analysis and technical review of BHP Diamonds Inc.'s Environmental Impact Statement for the proposed NWT Diamonds Project in the Lac de Gras area, identifying multiple deficiencies in baseline data, habitat assessment, and mitigation planning while recommending that public hearings may proceed pending resolution of the identified issues.
Aquatics Fish Habitat Development Plans
Intent to Intervene in the EIS Process, BHP/Diamet Panel Review (Dene Nation, October 1995)
20 October 1995Letter
The Dene Nation submits formal comments on the BHP/Diamet diamond mine Environmental Impact Statement, raising concerns about the inadequate review process, insufficient consultation with Dene communities and Elders, deficient treatment of traditional knowledge, and incomplete technical documentation. The letter argues that the EIS does not provide sufficient information to assess environmental and socio-economic impacts and calls for greater involvement of Dene people in the assessment and decision-making process.
Correspondence Traditional Knowledge Development Plans Water Quality

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