Water Quality

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

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Aquatic Effects Monitoring Program (AEMP) Technical Report, Ekati Diamond Mine (BHP Billiton, December 1999)
1 December 1999Report
This 1999 Aquatic Effects Monitoring Program (AEMP) technical report presents results from baseline and post-baseline monitoring of lakes and streams within the BHP Ekati Diamond Mine claimblock in the Northwest Territories. The report documents water quality, sediment quality, physical limnology, and biological parameters (phytoplankton, zooplankton, benthos, and fish communities) and concludes that the primary detected project effect in 1999 was elevated nitrate concentrations in Moose Lake and downstream waterbodies due to discharge from the Processed Kimberlite Containment Area.
Aquatic Effects Monitoring (AEMP)Aquatics Water Quality
Aquatic Effects Monitoring Program (AEMP) Technical Report, Appendices Volume II, Ekati Diamond Mine (BHP Billiton, December 1999)
1 December 1999Report
This is the 1999 Aquatic Effects Monitoring Program (AEMP) Technical Report Appendices Volume II prepared by Rescan Environmental Services for BHP Diamonds Inc., containing detailed taxonomic data, biomass measurements, statistical analyses, and diversity indices for phytoplankton, zooplankton, benthos, and fish communities from AEMP lakes and streams near the Ekati Diamond Mine in the Northwest Territories.
Aquatic Effects Monitoring (AEMP)Aquatics Benthic Invertebrates
Aquatic Effects Monitoring Program (AEMP) Technical Report, Ekati Diamond Mine (BHP Billiton, December 1999)
1 December 1999Report
This 1999 Aquatic Effects Monitoring Program (AEMP) Technical Report documents the second year of post-baseline aquatic monitoring at the BHP Ekati Diamond Mine, covering lakes, streams, and sediments within the mine claimblock. The report identifies elevated nitrate concentrations in waterbodies downstream of the Processed Kimberlite Containment Area as the primary project-related effect detected in 1999, while noting that most other environmental parameters remained within acceptable ranges with no major adverse ecosystem impacts observed.
Aquatics Aquatic Effects Monitoring (AEMP)Water Quality
Waste Rock Storage Area Seepage Survey, Ekati Diamond Mine (BHP Billiton, November 1999)
1999Report
BHP Diamonds Inc. 1999 Waste Rock Area Seepage Survey "Book #10" — transmittal November 17 1999 to Gordon Wray, Chairman, NWT Water Board. Same survey as "#13 1999" with additional appendix material: Appendix A Test Methodologies (ETL EnviroTest sub-contracted labs in Edmonton, Calgary, Saskatoon, Thunder Bay, Winnipeg, Grande Prairie; analytical methods for Beryllium, Boron, Cadmium, Calcium, Chromium, Cobalt, Copper, Iron, Sulphate by Ion Chromatography), and weekly leachate test results from February-October 1995 (pH, acidity/alkalinity as CaCO3, conductivity, sulphate SO4) on the Panda waste rock pile draining to Beartooth Lake, with pH-below-6.0 trigger threshold for seepage controls.
Waste Rock Geochemistry Water Quality
Waste Rock Storage Area Seepage Survey, Ekati Diamond Mine (BHP Billiton, November 1999)
1999Report
BHP Diamonds Inc. 1999 Waste Rock Area Seepage Survey transmittal letter (November 17 1999) and report to Gordon Wray, Chairman, NWT Water Board (Yellowknife). File reference 1616. Discusses the Panda waste rock pile drainage into Beartooth Lake, pH-6.0 trigger threshold for initiating seepage controls, and includes ETL EnviroTest (Edmonton/Calgary) Chain of Custody analytical reports with chemistry results for seepage samples.
Waste Rock Water Quality Monitoring Geochemistry
Operational Material Characterization and Monitoring of Weathering at Huckleberry (Huckleberry Mines Ltd., October 1999)
27 October 1999Presentation
Huckleberry Mines Ltd. presents operational material characterization and weathering monitoring procedures for their porphyry copper deposit, including ARD assessment of waste rock types, daily digging plans based on NPR and copper grade classification, and integrated water quality and materials handling monitoring protocols.
Waste Rock Acid Rock Drainage Geochemistry Development Plans
Waste Rock Storage Area Seepage Survey Correspondence, Ekati Diamond Mine (MVLWB, October 1999 to June 2002)
1999Report
2001 Rock Storage Area Seepage and Waste Rock Survey Report binder for the Ekati Diamond Mine (BHP Billiton). Includes correspondence with the Mackenzie Valley Land and Water Board (MVLWB — Laurie Cordell, Melody MacLeod), BHPB responses (Jim Millard, David Scott, Brent Murphy), 2001 Aquatic Effects Monitoring Program refinements, Panda and Misery seepage monitoring station maps and locations (SEEP-001 through SEEP-083 — Cujo Lake, Thinner Lake, King Pond Dam, Beartooth Lake, Bearclaw Lake, Beartooth waste rock storage area, Coarse Kimberlite Storage Area), and recommendations for granite vs. kimberlite seepage monitoring frequency.
Waste Rock Geochemistry Monitoring
Assessment of Ecological Effects from Cadmium Releases, Proposed Diavik Diamond Mine (Gartner Lee, September 1999)
1 August 1999Report
This environmental assessment evaluates the potential ecological effects of cadmium releases from the proposed Diavik Diamond Mine on Lac de Gras, examining cadmium sources, environmental fate, bioaccumulation in aquatic organisms, and predicted adverse effects on aquatic life including fish, invertebrates, and sediment-dwelling organisms.
Aquatics Water Quality Development Plans
Compliance Report, Water Licence N7L2-1616, Ekati Diamond Mine (BHP Billiton, July 1999)
20 July 1999Report
This 1998 compliance report documents BHP Diamonds Inc.'s adherence to water licence N7L2-1616 for the Ekati Diamond Mine, detailing water use, dewatering operations, construction projects, waste disposal, tailings management, environmental monitoring, and 17 inspections conducted during the year. Overall compliance is deemed satisfactory, though some non-compliance events occurred regarding runoff water quality and sewage discharge standards, which the licensee addressed through remedial infrastructure and operational modifications.
Regulatory Water Licence Water Quality
Duthie Mine Acid Rock Drainage Case Study (Silver Standard Resources, June 1999)
24 June 1999Report
A comprehensive case study and historical inventory of the Duthie Mine in British Columbia, documenting its operational history from 1908 to 1988, mining production records, geological characteristics, tailings management, and water quality monitoring efforts. The document includes detailed MINFILE records of ore grades, commodity recoveries, and reclamation activities spanning multiple decades of ownership and operation.
Waste Rock Water Quality Closure & Reclamation Development Plans Monitoring Geochemistry
BHP Diamonds Inc. Newsletter, Issue 1, Ekati Diamond Mine (BHP Billiton, May 1999)
1 May 1999Report
BHP Diamonds Inc. May 1999 newsletter reporting on operations at the Ekati Diamond Mine, including opening of the Sorting and Valuation Facility in Yellowknife, first aid competition results, employee updates, socio-economic agreements with northern communities, safety initiatives, and recognition of the frozen core dam design as a 1999 CEA Showcase Award winner.
Development Plans Monitoring Waste Rock Water Quality
Environmental Agreement Annual Report 1998, Ekati Diamond Mine (BHP Billiton, April 1999)
30 April 1999Report
BHP Diamonds Inc.'s 1998 Environmental Agreement Annual Report documents the Ekati Diamond Mine's transition from construction to operations, including compliance monitoring results, environmental studies, wildlife and aquatic effects monitoring, and continuous improvement initiatives. The report covers operations of the Panda pit, water licence compliance, processed kimberlite management, and various mitigation measures for environmental protection in the Northwest Territories.
Environmental Agreement Monitoring Water Quality
Environmental Agreement Annual Report 1998, Ekati Diamond Mine (BHP Billiton, April 1999)
30 April 1999Report
This is the 1998 Environmental Agreement Annual Report for the Ekati Diamond Mine, submitted by BHP Diamonds Inc. on April 30, 1999. The report documents the mine's transition from construction to full operational phase in October 1998, including comprehensive environmental monitoring results, compliance status with Water Licence N7L2-1616, and detailed accounts of wildlife, aquatic, air quality, and operational environmental management activities throughout 1998.
Environmental Agreement Monitoring Water Quality
14th Board of Directors Meeting Package (IEMA, July 1999)
16 April 1999Meeting Minutes
Minutes from the 13th Board of Directors Meeting of the Independent Environmental Monitoring Agency (April 16-18, 1999) documenting discussions on Ekati Diamond Mine operations, including budget negotiations with BHP, kimberlite toxicity studies, tailings management concerns, fish habitat compensation planning, and regulatory processes for mine expansion applications involving Sable, Pigeon, and Beartooth kimberlite pipes.
Board Meetings Minutes Water Quality Fish Habitat Development Plans
Air Quality Monitoring at the Ekati Diamond Mine Using Vegetation and Lichens as Bioindicators (ABR Inc., 1999)
1 April 1999Report
This report documents the initial air quality monitoring program at the Ekati Diamond Mine using vegetation and lichens as bioindicators, including a comprehensive literature review on the use of lichens and mosses for detecting atmospheric contaminants and 1998 baseline results comparing trace metal concentrations in lichen tissue between project area and reference area stations.
Air Quality Monitoring Particulate Matter Development Plans Water Quality
State of Knowledge Report, West Kitikmeot/Slave Study Area (West Kitikmeot/Slave Study Society, April 1999)
1 April 1999Report
A comprehensive state of knowledge report on the West Kitikmeot/Slave Study area covering environmental, ecological, and human dimensions, including climate, geology, ecosystems, human pressures, and research needs. The report integrates scientific and traditional knowledge about the region's ecosystems and documents environmental stresses from mining, development, and other human activities.
Traditional Knowledge Wildlife Water Quality
Water Licence N7L2-1616 Annual Report for 1998, Ekati Diamond Mine (BHP Billiton, March 1999)
1999Report
BHP Diamonds Inc. Annual Report for 1998 under Type A Water Licence N7L2-1616, submitted March 24 1999 to Gordon Wray, Chairman, NWT Water Board (Yellowknife), in accordance with Part B Section 5. Includes Surveillance Network Program station 1616-12 (September 15-21 1998) ICP-MS chemistry for Tot-Cadmium, Tot-Copper, Tot-Aluminum, Tot-Arsenic, Tot-Boron, pH, Orthophosphate, Biological Oxygen Demand, NO3-N + NO2-N, Ammonia-N, Nitrate; and the EKATI Diamond Mine Spill Contingency Plan covering Little Lake suspended-sediment containment, dam-to-Nema Lake topographic-low stockpiling restrictions, and intermediate-dike breach scenarios.
Water Licence Regulatory SNP
Kodiak Lake Sewage Effects Study Technical Report, Ekati Diamond Mine (BHP Billiton, March 1999)
1 March 1999Report
This technical report presents the 1998 Kodiak Lake Sewage Effects Study, the second year of a three-year monitoring program examining the effects of treated sewage effluent discharge on water quality, sediment quality, and aquatic life in Kodiak Lake and Kodiak-Little Stream. The study documents increased water residence time, elevated nutrient loading, enhanced lake productivity, and reduced winter dissolved oxygen levels, leading BHP to decide to redirect sewage discharge from Kodiak Lake to the Long Lake containment area.
Aquatics Aquatic Effects Monitoring (AEMP)Water Quality
Kodiak Lake Sewage Effects Study, Technical Report Appendices, Ekati Diamond Mine (BHP Billiton, March 1999)
1 March 1999Report
This is the appendices volume of the 1998 Kodiak Lake Sewage Effects Study prepared by Rescan Environmental Services Ltd. for BHP Diamonds Inc., containing detailed water quality data, sediment chemistry, biological survey results, and statistical analyses from multiple sampling stations and dates throughout 1998.
Water Quality Aquatics Aquatic Effects Monitoring (AEMP)
Aquatic Effects Monitoring Program (AEMP) Overview Report, Ekati Diamond Mine (BHP Billiton, March 1999)
1 March 1999Report
This 1998 Aquatic Effects Monitoring Program (AEMP) overview report documents the first year of post-baseline monitoring at the Ekati Diamond Mine, assessing impacts on water quality, sediment quality, and aquatic organisms in lakes and streams across the Koala Watershed. The report concludes that while overall aquatic conditions remained largely pristine with no major adverse effects, some nutrient-related impacts were detected, particularly elevated nitrate concentrations downstream of construction activities and slight phytoplankton enhancement in lakes affected by treated sewage discharge.
Aquatic Effects Monitoring (AEMP)Aquatics Water Quality Wastewater

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