Aquatics

Lakes, streams, fish habitat, aquatic biology, AEMP aquatic-effects work

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Aquatic Effects Monitoring Program (AEMP) Fish Response Plan, Comments, Ekati Diamond Mine (Independent Environmental Monitoring Agency, June 2016)
17 June 2016Letter
The Independent Environmental Monitoring Agency provides comments on Dominion Diamond Ekati Corporation's Fish Response Plan, supporting proposed studies while raising concerns about the exclusion of Leslie Lake data, the use of otoliths without historical baseline data, and recommending the inclusion of parasitism metrics alongside growth in determining medium action levels.
Aquatics Aquatic Effects Monitoring (AEMP)Correspondence
Aquatic Effects Monitoring Program (AEMP) Fish Response Plan, Version 1.0, Ekati Diamond Mine (Dominion Diamond, April 2016)
30 April 2016Report
This Aquatic Response Plan for Fish addresses low action level exceedances detected in 2012 for tissue metals (antimony, molybdenum, selenium, uranium) and EROD activity in lake trout and round whitefish at the Ekati Diamond Mine, submitted to the Wek'èezhìi Land and Water Board in compliance with Water Licence W2012L2-0001. The report describes the likely causes of exceedances (elevated metal concentrations in water and sediments downstream of the Long Lake Containment Facility and King Pond Settling Facility), ecological implications, and proposes response actions including toxicology literature review and fish growth studies to establish medium and high action levels.
Aquatics Aquatic Effects Monitoring (AEMP)Water Quality
Aquatic Effects Monitoring Program (AEMP) 2015 Annual Report, Summary Report, Ekati Diamond Mine (Dominion Diamond, March 2016)
31 March 2016Report
The 2015 Aquatic Effects Monitoring Program (AEMP) Summary Report documents the comprehensive annual monitoring of aquatic ecosystems at the Ekati Diamond Mine across four watersheds (Koala, King-Cujo, Carrie Pond, and Pigeon-Fay/Upper Exeter), assessing water quality, physical limnology, and biological communities to detect mine-related environmental changes. The report includes evaluation of effects, action level exceedances under the Aquatic Response Framework, and response plans for nitrogen and potassium exceedances.
Aquatic Effects Monitoring (AEMP)Aquatics Water Quality
Aquatic Effects Monitoring Program (AEMP) 2015 Annual Report, Part 1, Evaluation of Effects, Ekati Diamond Mine (Dominion Diamond, March 2016)
1 March 2016Report
The 2015 Aquatic Effects Monitoring Program (AEMP) Part 1 report evaluates aquatic environmental effects from the Ekati Diamond Mine across four watersheds (Koala, King-Cujo, Pigeon-Fay, and Upper Exeter) and reference lakes, analyzing water quality, physical limnology, plankton, benthos, and fish populations from 1994–2015 baseline and operational data.
Aquatic Effects Monitoring (AEMP)Aquatics Water Quality
Aquatic Effects Monitoring Program (AEMP) 2015 Annual Report, Part 2, Data Report, Ekati Diamond Mine (Dominion Diamond, March 2016)
1 March 2016Report
This is the 2015 Aquatic Effects Monitoring Program Part 2 – Data Report for the Ekati Diamond Mine, prepared by ERM Consultants Canada Ltd. for Dominion Diamond Ekati Corporation. The report presents comprehensive field methodology and detailed monitoring data collected from October 2014 to September 2015 across meteorology, hydrology, physical limnology, water quality, phytoplankton, zooplankton, benthic invertebrates, and fish communities in lakes and streams across four watersheds surrounding the mine.
Aquatic Effects Monitoring (AEMP)Aquatics Water Quality
Aquatic Effects Monitoring Program (AEMP) 2015 Annual Report, Part 3, Statistical Report, Ekati Diamond Mine (Dominion Diamond, March 2016)
1 March 2016Report
This is the 2015 Aquatic Effects Monitoring Program Part 3 Statistical Report for the Ekati Diamond Mine, prepared by ERM Consultants Canada Ltd. for Dominion Diamond Ekati Corporation. The report presents comprehensive statistical analyses of water quality, plankton, benthos, and fish data collected from monitored and reference lakes in the Koala, King-Cujo, Pigeon-Fay, and Upper Exeter watersheds, using linear mixed effects regression, Tobit regression, and before-after control-impact (BACI) design methodologies to detect potential mine-related effects on aquatic ecosystems.
Aquatic Effects Monitoring (AEMP)Aquatics Water Quality
Jay Project Environmental Assessment (EA1314-01) Technical Reports, Multiple Parties (Diavik Diamond Mines, July to August 2015)
2015Letter
DDMI submits a technical report to the Mackenzie Valley Environmental Impact Review Board regarding the Jay Project environmental assessment, arguing that the proposed Jay Project would adversely affect DDMI's ability to operate and close the Diavik Mine by worsening water quality in Lac de Gras and reducing caribou use of the reclaimed mine site during the critical closure period (2023-2030).
Development Plans Water Quality Closure & Reclamation
Revised Site-Specific Water Quality Objectives for Potassium, Ekati Diamond Mine (Dominion Diamond, July 2015)
2015Report
Ekati Diamond Mine Revised Site-Specific Water Quality Objectives (SSWQO) for Potassium, Version 1.0, prepared by Dominion Diamond Ekati Corporation, July 31 2015, transmitted to Violet Camsell-Blondin, Chair, Wek'èezhii Land and Water Board, Yellowknife. Includes 21-day Chronic Freshwater Toxicity Test data using Daphnia magna (Sample ID Potassium WER-SITE, Work Order 1522, March 18 – April 2015) with daily reproduction counts and initial/final water quality measurements (pH, conductivity µS, potassium concentrations), and Appendix E.5 Selected Normal Species Sensitivity Distribution (SSD) Model Residual Normality Test results (Shapiro-Francia W', D'Agostino & Pearson's K²).
Water Quality Effluent Quality Criteria Aquatics Correspondence
Jay Project Technical Sessions, Mackenzie Valley Review Board (MVEIRB, April 2015)
20 April 2015Meeting Minutes
Technical sessions held April 20-24, 2015 for the Jay Project environmental assessment, featuring IEMA, Dominion Diamond, and regulatory participants discussing project alternatives, wildlife impacts, water quality modeling, fish habitat, air quality, and closure planning. The document includes detailed homework assignments, undertakings, and commitments from each day, followed by Information Request responses addressing environmental concerns related to mining alternatives, dike design, waste rock storage, water quality predictions, fish contaminants, and zooplankton dynamics.
Board Meetings Wildlife Water Quality
Status and Trends of Water Chemistry and Flow in the Coppermine and Lockhart River Basins, Final Report (Stantec, March 2015)
31 March 2015Report
This final report by Stantec evaluates the status and trends of water chemistry and flow in the Coppermine and Lockhart River watersheds in the Northwest Territories, analyzing 50+ years of monitoring data from Environment Canada and GNWT to assess spatial variability, seasonality, and temporal trends in response to mining development and other pressures.
Water Quality Monitoring Aquatic Effects Monitoring (AEMP)Regulatory
Aquatic Effects Monitoring Program (AEMP) Summary Report, Ekati Diamond Mine (Dominion Diamond, March 2015)
31 March 2015Report
The 2014 Aquatic Effects Monitoring Program (AEMP) annual report for the Ekati Diamond Mine documents comprehensive monitoring of aquatic ecosystems across multiple watersheds (Koala, King-Cujo, Pigeon-Fay, and Upper Exeter) to detect mine-related changes in water quality, physical limnology, sediment quality, and biological communities. The report includes updates to the Nitrogen Response Plan and a new Potassium Response Plan as required under Water Licence W2012L2-0001.
Aquatic Effects Monitoring (AEMP)Aquatics Water Quality
Aquatic Effects Monitoring Program (AEMP) Part 1 — Evaluation of Effects, Ekati Diamond Mine (Dominion Diamond, March 2015)
20 March 2015Report
The 2014 Aquatic Effects Monitoring Program (AEMP) evaluation assesses environmental effects of the Ekati Diamond Mine on lake and stream water quality, sediment composition, and aquatic biology across multiple watersheds including Koala, King-Cujo, and Pigeon-Fay, using statistical analysis and comparison to historical baseline data from 1994–2014.
Aquatic Effects Monitoring (AEMP)Aquatics Water Quality
Aquatic Effects Monitoring Program (AEMP) Part 2 — Data Report, Ekati Diamond Mine (Dominion Diamond, March 2015)
20 March 2015Dataset
This is the 2014 Aquatic Effects Monitoring Program Part 2 - Data Report for the Ekati Diamond Mine, documenting comprehensive field sampling and laboratory analyses of the aquatic environment from October 2013 to September 2014. The report presents detailed methodology and results for monitoring meteorology, hydrology, physical limnology, water quality, phytoplankton, zooplankton, benthic invertebrates, and sediment quality across multiple lakes and streams in four watersheds surrounding the mine.
Aquatics Aquatic Effects Monitoring (AEMP)Water Quality
Aquatic Response Plan for Potassium, Version 1.0, Ekati Diamond Mine (Dominion Diamond, March 2015)
2015Report
Ekati Diamond Mine Aquatic Response Plan for Potassium, Version 1.0, prepared by Dominion Diamond Ekati Corporation, March 31 2015, submitted to Violet Camsell-Blondin, Chair, Wek'èezhli Land and Water Board (WLWB), Yellowknife. Documents Total Potassium concentrations at AEMP Lake Sites 1994-2014 (Reference: ERM, Nanuq, Vulture), Action Level status for King-Cujo and Pigeon-Fay / Upper Exeter watersheds (action level not reached), potassium source attribution to Process Plant kimberlite processing (particularly underground kimberlite per Rescan 2012c), and references to ERM-Rescan Long Lake Containment Facility water quality work.
Aquatics Aquatic Effects Monitoring (AEMP)Water Quality
Northwest Territories 2015 Environmental Audit (Audit Steering Committee, 2015)
~2015Report
Approximate date — inferred from filename
The Northwest Territories 2015 Environmental Audit examines the effectiveness of the regulatory system under the Mackenzie Valley Resource Management Act and monitoring methods for cumulative environmental impacts, with SENES Consultants conducting the independent audit and an Audit Steering Committee overseeing the process. The audit will review regulatory effectiveness, identify information gaps related to caribou, water, and fish, and provide recommendations to improve environmental management in the NWT.
Regulatory Monitoring Water Quality Traditional Knowledge Aquatics
Project Description, Jay Project Developer's Assessment Report, Section 3 (Dominion Diamond, October 2014)
1 October 2014Report
This is Section 3 (Project Description) of Dominion Diamond's Developer's Assessment Report for the proposed Jay Project, submitted to the Mackenzie Valley Review Board in October 2014. It provides comprehensive technical details of the planned extension of the Ekati Diamond Mine through development of the Jay kimberlite pipe beneath Lac du Sauvage, including construction, operations, closure phases, geological and geotechnical characterization, and use of existing mine infrastructure.
Development Plans Closure & Reclamation Waste Rock Exploration
Environmental Agreement and Water Licence Annual Report 2013 (Dominion Diamond, April 2014)
24 April 2014Presentation
This 2013 Environmental Agreement and Water Licence Annual Report documents Dominion Diamond Ekati Corporation's compliance with regulatory requirements for the Ekati Diamond Mine, including water management, waste disposal, mining operations, environmental monitoring, and reclamation activities throughout the reporting year.
Regulatory Water Licence Environmental Agreement
WLWB Public Hearing — Lynx Project Water Licence & Land Use Permit, Ekati Diamond Mine (Multiple parties, February 2014)
6 February 2014Report
Public hearing proceedings (February 6-7, 2014) for Dominion Diamond Ekati Corporation's proposed Lynx Project water licence renewal and land use permit applications before the Wek'eezhii Land and Water Board, including presentations and interventions from IEMA, AANDC, Lutsel K'e Dene First Nation, Yellowknives Dene First Nation, and the proponent addressing water management, wildlife protection, closure planning, and regulatory compliance.
Regulatory Water Licence Water Quality
Modelling Predictions of Water Quality for Pit Lakes, Ekati Diamond Mine (BHP Billiton, November 2013)
2013Report
Ekati Diamond Mine Modelling Predictions of Water Quality for Pit Lakes (Panda, Beartooth, Koala, Koala North), prepared by Rescan Engineers & Scientists / Rescan Environmental Services Ltd. for Dominion Diamond Ekati Corporation, November 18 2013, submitted to Violet Camsell-Blondin (Chair, Wek'èezhii Land and Water Board, Yellowknife). Includes maximum ice-thickness range from nearby Contwoyto Lake (1.2-2.2 m) for natural-variability bounding, ΔSt salinity-stability parameter (30 J/m² and 10 J/m² scenarios) plots for Koala, Koala North, Beartooth, Panda pit-lake salinity vs depth, Comparison of Predicted Pit Wall Runoff and Groundwater with Observed Pit Sump Quality, and predicted Dissolved Aluminum, Arsenic, Chromium concentration projections 2006-2009.
Closure & Reclamation Water Quality Monitoring Regulatory
Environmental Impact Report, Close out Report, Ekati Diamond Mine (Dominion Diamond, August 2013)
~2013Report
Approximate date — inferred from filename
This close-out report documents the completion of the 2012 Environmental Impact Assessment (EIR) process for the Ekati Diamond Mine, including technical sessions, public workshops held November 6-7, 2012, and stakeholder/regulator comments received in January 2013. The report consolidates comments and responses from regulatory and community stakeholders on environmental risks including air quality, water quality, land management, and wildlife impacts, with particular focus on caribou movement, waste rock freezing, dioxin/furan contamination, and adaptive management strategies.
Development Plans Monitoring Air Quality

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