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Surveillance Network Program (SNP) Monthly Report, Ekati Diamond Mine (Dominion Diamond, August 2019)
1 August 2019Report
Dominion Diamond Mines' Surveillance Network Program (SNP) monthly report for August 2019 under Water Licence W2012L2-0001, documenting 30 water samples collected from various monitoring stations at Ekati Diamond Mine, with detailed field parameters, analytical results for metals, nutrients, and other water quality indicators, plus flow and volume measurements for water sources, discharges, and mining operations.
SNP Water Quality Monitoring
Aquatic Effects Monitoring Program (AEMP) Annual Report Review, Ekati Diamond Mine (Independent Environmental Monitoring Agency, July 2019)
3 July 2019Letter
The Independent Environmental Monitoring Agency reviews Dominion Diamond Mines' 2018 Ekati Aquatic Effects Monitoring Plan Annual Report and identifies concerns regarding elevated mercury levels in Kodiak Lake trout and significantly elevated selenium concentrations in slimy sculpin and whitefish in Leslie Lake, recommending further investigation and expanded monitoring protocols.
Aquatics Aquatic Effects Monitoring (AEMP)Water Quality
Aquatic Effects Monitoring Program (AEMP) Chloride Response Plan, Version 2.1, Ekati Diamond Mine (Dominion Diamond, June 2019)
19 June 2019Report
This Response Plan for Chloride Version 2.1 addresses elevated chloride concentrations in Leslie and Moose lakes downstream of the Long Lake Containment Facility at the Ekati Diamond Mine, documenting action level exceedances and proposing ongoing management through monitoring, water quality modelling, and operational optimization to ensure no adverse effects to aquatic life, wildlife, or humans.
Water Quality Regulatory Aquatics
Seepage Survey Report, Agency Comments, Ekati Diamond Mine (Independent Environmental Monitoring Agency, June 2019)
14 June 2019Letter
The Independent Environmental Monitoring Agency provides detailed comments on Dominion Diamond Mines' 2018 Seepage Survey Report, recommending establishment of a new reference station unimpacted by mine activities, clarification of 'receiving environment' definitions, development of an adaptive management framework for seepage, and addressing data gaps and uncertainties in waste rock storage monitoring.
Waste Rock Water Quality Monitoring Regulatory
Surveillance Network Program (SNP) Monthly Report, Ekati Diamond Mine (Dominion Diamond, June 2019)
1 June 2019Report
Dominion Diamond Mines' June 2019 Surveillance Network Program monthly report for Water Licence W2012L2-0001, containing 24 water samples collected from various monitoring stations at Ekati Diamond Mine with comprehensive field parameters and analytical results for physical, chemical, and metal constituents.
SNP Water Quality Monitoring
Waste Rock and Waste Rock Storage Area Seepage Survey Report, Ekati Diamond Mine (Dominion Diamond, April 2019)
24 April 2019Report
This 2018 Waste Rock and Waste Rock Storage Area Seepage Survey Report documents Dominion Diamond Mines' compliance with Water Licence W2012L2-0001 requirements for monitoring seepage quality and waste rock geochemistry at the Ekati Diamond Mine. The report identifies 8 seeps of potential concern in 2018 and presents adaptive management actions, waste rock characterization data from multiple pits, and seepage monitoring results from six waste rock storage areas, concluding that no adverse effects on receiving waterbodies were detected despite elevated constituent concentrations at some seep locations.
Waste Rock Acid Rock Drainage Water Quality
Aquatic Effects Monitoring Program (AEMP) Fish Response Plan, Version 1.2, Reasons for Decision, Ekati Diamond Mine (Wek'èezhìı Land and Water Board, April 2019)
24 April 2019Regulatory Filing
The Wek'èezhìi Land and Water Board issued a Reasons for Decision on April 24, 2019 rejecting Dominion Diamond Mines' Ekati Aquatic Effects Monitoring Program (AEMP) Fish Response Plan Version 1.2, but establishing specific Medium and High Action Levels for selenium in fish tissue and directing submission of a revised Version 1.3 within 90 days with Medium and High Action Levels for all Low Action Level exceedances.
Aquatic Effects Monitoring (AEMP)Aquatics Regulatory
Aquatic Effects Monitoring Program (AEMP) Annual Report 2018, Summary Report, Ekati Diamond Mine (Dominion Diamond, March 2019)
29 March 2019Report
The 2018 Aquatic Effects Monitoring Program (AEMP) Annual Report for the Ekati Diamond Mine documents the results of comprehensive aquatic ecosystem monitoring across three watersheds (Koala, King-Cujo, and Pigeon-Fay/Upper Exeter) and the Horseshoe Watershed, submitted to the Wek'èezhìi Land and Water Board in compliance with Water Licence W2012L2-0001. The report evaluates physical limnology, water quality, biological communities (phytoplankton, zooplankton, benthos), and fish populations to detect mine-related effects and assess the effectiveness of mitigation measures.
Aquatic Effects Monitoring (AEMP)Aquatics Water Quality Traditional Knowledge
Aquatic Effects Monitoring Program (AEMP) Statistical Report 2018, Ekati Diamond Mine (Dominion Diamond, March 2019)
1 March 2019Report
Statistical analysis report of the 2018 Aquatic Effects Monitoring Program for Ekati Diamond Mine, presenting regression models and hypothesis tests comparing water quality, plankton, benthos, and fish parameters across monitored and reference lakes in the Koala, King-Cujo, Pigeon-Fay, and Upper Exeter watersheds from 1998-2018.
Aquatic Effects Monitoring (AEMP)Aquatics Water Quality
Aquatic Effects Monitoring Program (AEMP) 2018 Annual Report, Part 2, Data Report (Volume 3 of 4), Ekati Diamond Mine (Dominion Diamond, March 2019)
1 March 2019Report
This comprehensive 2018 Aquatic Effects Monitoring Program (AEMP) data report for the Ekati Diamond Mine presents detailed photographic documentation and analysis of fish health indicators (DELT assessments, parasites, cysts) across multiple lake species including round whitefish, lake trout, and slimy sculpin, along with baseline aquatic ecosystem data (1999–2017) for the Sable development area covering bathymetry, hydrology, water quality, sediment, plankton, benthos, and fish community parameters.
Aquatic Effects Monitoring (AEMP)Aquatics Monitoring
Aquatic Effects Monitoring Program (AEMP) 2018 Annual Report, Part 2, Data Report (Volume 4 of 4), Ekati Diamond Mine (Dominion Diamond, March 2019)
1 March 2019Report
Comprehensive Sable Aquatic Baseline Report documenting benthic invertebrate and fish community monitoring data collected from 1999 to 2017 in lakes and streams near the Ekati Diamond Mine in the Northwest Territories, including taxonomy, habitat assessment, tissue analysis, and quality assurance procedures.
Aquatics Benthic Invertebrates Monitoring Water Quality
Aquatic Effects Monitoring Program (AEMP) 2018 Annual Report, Part 2, Data Report (Volume 2 of 4), Ekati Diamond Mine (Dominion Diamond, March 2019)
1 March 2019Report
This is Part 2 of the 2018 Aquatic Effects Monitoring Program (AEMP) data report for Ekati Diamond Mine, containing exterior and interior photographs of round whitefish and lake trout specimens collected from multiple lakes (Kodiak, Leslie, Moose, Nema, Slipper, Cujo, Nanuq, Counts, and Vulture) during August and September 2018, with documentation of fish health indicators including lesions, parasites, and fin erosion.
Aquatic Effects Monitoring (AEMP)Aquatics Monitoring
Aquatic Effects Monitoring Program (AEMP) 2018 Annual Report, Part 2, Data Report (Volume 1 of 4), Ekati Diamond Mine (Dominion Diamond, March 2019)
1 March 2019Report
This is the 2018 Aquatic Effects Monitoring Program (AEMP) Part 2 Data Report for the Ekati Diamond Mine, documenting comprehensive aquatic environmental sampling conducted from October 2017 to September 2018. The report presents detailed field methods, sampling design, and results for physical limnology, water quality, hydrology, phytoplankton, zooplankton, benthic invertebrates, and fish communities across multiple lakes and streams in five watersheds surrounding the mine.
Aquatic Effects Monitoring (AEMP)Aquatics Water Quality
Aquatic Effects Monitoring Program (AEMP) 2018 Annual Report, Part 1, Evaluation of Effects (Volume 1 of 2), Ekati Diamond Mine (Dominion Diamond, March 2019)
1 March 2019Report
The 2018 Aquatic Effects Monitoring Program (AEMP) report for the Ekati Diamond Mine presents a comprehensive evaluation of aquatic effects across multiple watersheds, analyzing physical limnology, water quality, and biological parameters (phytoplankton, zooplankton, benthos, and fish) from 1994–2018 with comparison to reference lakes and streams.
Aquatic Effects Monitoring (AEMP)Aquatics Water Quality
Surveillance Network Program (SNP) Monthly Report, Ekati Diamond Mine (Dominion Diamond, February 2019)
1 February 2019Report
Monthly Surveillance Network Program report for February 2019 submitted by Dominion Diamond Mines to the Wek'èezhìi Land and Water Board documenting water volumes, lake levels, minewater quantities, sewage treatment, ore production, and waste rock disposal at the Ekati Diamond Mine under Water Licence W2012L2-0001.
SNP Water Quality Monitoring
Aquatic Effects Monitoring Program (AEMP) Fish Response Plan Version 1.2, Phosphorus Response Plan Version 1.3, and Chloride Response Plan Version 1.2, Agency Comments, Ekati Diamond Mine (Independent Environmental Monitoring Agency, January 2019)
17 January 2019Letter
The Independent Environmental Monitoring Agency provides detailed comments on Dominion Diamond Ekati's Fish Version 1.2, Phosphorus Version 1.3, and Chloride Version 1.2 response plans, recommending improvements to water quality modeling, fish tissue monitoring protocols, action level thresholds, and consideration of organochlorine contamination and sediment sources in aquatic effects assessment.
Aquatics Aquatic Effects Monitoring (AEMP)Water Quality
Wastewater and Processed Kimberlite Management Plan (WPKMP) Version 8.0 and Panda Koala Deposition Study, Agency Comments, Ekati Diamond Mine (Independent Environmental Monitoring Agency, November 2018)
29 November 2018Letter
The Independent Environmental Monitoring Agency submits detailed comments on Dominion Diamond Ekati ULC's Wastewater Processed Kimberlite Management Plan version 8.0 and Panda Koala Deposition Study, recommending contingent approval of Panda and Koala pits as processed kimberlite containment areas pending confirmation of insufficient capacity in existing facilities and raising concerns about freshwater cap depth, monitoring frequency, ammonia/nitrate exclusion, and modelling assumptions.
Correspondence Waste Rock Kimberlite Tailings
Aquatic Effects Monitoring Program (AEMP) Response Framework, Comments on Version 3.0, Ekati Diamond Mine (Independent Environmental Monitoring Agency, October 2018)
4 October 2018Letter
The Independent Environmental Monitoring Agency submits comments on Dominion Diamond's Aquatic Response Framework v3.0, challenging the proposed fluoride benchmark of 1.5 mg/L and recommending retention of the 0.27 mg/L benchmark based on toxicity data and concerns about protection of lake trout as a valued ecosystem component. The Agency also recommends inclusion of sediment quality criteria for selenium in the ARF due to increasing selenium levels observed in fish tissues and sediments in Leslie Lake.
Aquatics Water Quality Correspondence Fish Habitat
101st Board Meeting, Summary of Discussion, Ekati Diamond Mine (Independent Environmental Monitoring Agency, September 2018)
19 September 2018Meeting Minutes
The 101st Board Meeting of the Independent Environmental Monitoring Agency (September 19-20, 2018) covered Agency business including reviews of regulatory submissions, communications updates, financial reporting, and presentations from Dominion Diamond and government representatives regarding Ekati mine operations, exploration activities, and closure planning.
Board Meetings Minutes Water Quality Aquatics Air Quality
Traditional Knowledge Elders Group (TKEG) Summary Reporting, Ekati Diamond Mine (Dominion Diamond, September 2018)
17 September 2018Regulatory Filing
Dominion Diamond Ekati ULC submits Traditional Knowledge Elders Group (TKEG) meeting summaries and posters from January, April, and September 2017 to the Mackenzie Valley Environmental Impact Review Board and Wek'èezhìi Land and Water Board in fulfillment of Measure 6-5 of the Jay Project Environmental Assessment. The document includes detailed workshop reports covering caribou monitoring and mitigation, Jay Project fish offsetting (Inconnu reintroduction in Yellowknife River), construction planning, and integration of traditional knowledge into environmental decision-making for the Jay Project development.
Traditional Knowledge Caribou Regulatory Aquatics

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940 documents · Page 7 of 47