Particulate Matter

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Air Quality Monitoring Program (AQMP), Appendix A, Ekati Diamond Mine (Arctic Canadian Diamond Company, May 2025)
1 May 2025Report
The 2024 Air Quality Monitoring Program (AQMP) report for the Ekati Diamond Mine presents results of meteorological and air quality monitoring data collected throughout 2024, including particulate sampling, continuous air monitoring, dustfall measurements, and greenhouse gas emissions. The report documents that air quality parameters remained generally below regulatory standards, with 157.4 kt CO2e of greenhouse gas emissions released in 2024, approximately 8% lower than 2023.
Air Quality Particulate Matter Greenhouse Gas
Air Quality Monitoring Program (AQMP), Appendix D to the 2022 Environmental Agreement and Water Licence Annual Report, Ekati Diamond Mine (Arctic Canadian Diamond Company, April 2023)
1 April 2023Report
The 2022 Air Quality Monitoring Program (AQMP) report for the Ekati Diamond Mine presents meteorological and air quality monitoring data collected throughout 2022, including ambient particulate matter, gaseous contaminants, dustfall, and greenhouse gas emissions. Results show that annual average temperature was -8.9°C, precipitation was 170 mm (48% below the 1994-2022 average), and no exceedances of GNWT standards for total suspended particulate or PM2.5 were recorded, with total GHG emissions estimated at 164.9 ktCO2e.
Air Quality Particulate Matter Dust Deposition
Air Quality Monitoring Program (AQMP) Annual Report 2021, Appendices F-I, Ekati Diamond Mine (Arctic Canadian Diamond Company, April 2022)
1 April 2022Report
The 2021 Air Quality Monitoring Program (AQMP) report for the Ekati Diamond Mine presents meteorological and air quality monitoring data collected from 2018 to 2021, assessing compliance with ambient air quality standards and the effectiveness of dust mitigation strategies. Key findings include no exceedances of total suspended particulate standards, greenhouse gas emissions of 150.8 ktCO2e in 2021, and recommendations to streamline monitoring station networks while maintaining adequate coverage of mining activity impacts.
Air Quality Monitoring Particulate Matter
Air Quality Monitoring Program (AQMP), Appendix F to the 2021 Environmental Agreement and Water Licence Annual Report, Ekati Diamond Mine (Arctic Canadian Diamond Company, April 2022)
1 April 2022Report
The 2021 Air Quality Monitoring Program (AQMP) report for the Ekati Diamond Mine presents meteorological and air quality monitoring data collected from 2018 to 2021, assessing compliance with ambient air quality standards and the effectiveness of dust mitigation measures. Key findings include no exceedances of total suspended particulate standards, greenhouse gas emissions of 150.8 ktCO2e in 2021, and elevated metal and particulate concentrations in snow and lichen tissue near mining infrastructure that decrease with distance from the mine site.
Air Quality Particulate Matter Monitoring
Air Quality Monitoring Program (AQMP) Report 2019, Agency Response Letter, Ekati Diamond Mine (Independent Environmental Monitoring Agency, July 2020)
20 July 2020Letter
The Independent Environmental Monitoring Agency reviews Dominion Diamond Mines' 2019 Air Quality Monitoring Program Report for Ekati, finding it acceptable while providing comments on mine footprint representation, unit conversion inconsistencies, and terminology standardization in comparisons to GNWT air quality standards.
Air Quality Monitoring Correspondence Development Plans
Air Quality Monitoring Program (AQMP) Report 2018, Agency Response Letter, Ekati Diamond Mine (Independent Environmental Monitoring Agency, June 2019)
7 June 2019Letter
The Independent Environmental Monitoring Agency acknowledges receipt of Dominion Diamond Mines' 2018 Air Quality Monitoring Program Report and requests fulfillment of a 2017 commitment to amalgamate the Ekati and Jay Project air quality monitoring plans into a single site-wide plan with consolidated thresholds and triggers.
Air Quality Correspondence Monitoring Development Plans
Air Quality Monitoring Program (AQMP) Report 2017, Comment Letter, Ekati Diamond Mine (Independent Environmental Monitoring Agency, May 2018)
30 May 2018Letter
The Independent Environmental Monitoring Agency provides comments on Dominion Diamond Ekati ULC's 2017 Air Quality Monitoring Program Report, noting improvements but raising concerns about declining data capture rates for PM2.5 and TSP, dustfall impacts on vegetation and caribou, and the need for enhanced dust suppression and spring monitoring protocols.
Air Quality Particulate Matter Dust Deposition
Air Quality Monitoring Program (AQMP) Report, Ekati Diamond Mine (Dominion Diamond, March 2018)
31 March 2018Report
This is the 2017 Air Quality Monitoring Program report for the Ekati Diamond Mine, covering monitoring data from 2015 to 2017. The report presents results from seven monitoring components including meteorological data, air emissions and greenhouse gas calculations, ambient air quality monitoring, dustfall monitoring, acid and metal deposition, snow chemistry, and lichen tissue sampling, demonstrating that mine effects on air quality are limited to approximately 1 km for fugitive dust and 15 km for smaller particles.
Air Quality Monitoring Greenhouse Gas
Air Quality Monitoring Program, Ekati Diamond Mine (BHP Billiton, May 2012)
10 May 2012Report
This three-year Air Quality Monitoring Program report (2009-2011) for the EKATI Diamond Mine presents results from six monitoring components: meteorology, emissions calculations, ambient air quality monitoring (HVAS and CAM), dustfall, snow chemistry, and lichen tissue analysis. The report concludes that mining effects on air quality remain localized within approximately 1 km for heavier particles and 15 km for smaller particles, with values generally below relevant guidelines.
Air Quality Monitoring Greenhouse Gas
Air Quality Management and Monitoring Plan (AQMP), Ekati Diamond Mine (BHP Billiton, March 2009)
31 March 2009Report
BHP Billiton Diamonds Inc. presents the 2009 Air Quality Management and Monitoring Plan for the EKATI Diamond Mine, detailing updated strategies for monitoring and managing ambient air quality, dust emissions, and greenhouse gas inventory. The plan incorporates improvements developed through consultations with IEMA, GNWT-ENR, and Environment Canada, including relocation of the Continuous Air Monitoring Building, updated snow and lichen sampling methodologies, and redesigned monitoring station locations to provide better coverage of the mine's zone of influence.
Air Quality Monitoring Greenhouse Gas
Air Quality Management and Monitoring Plan 2003, Ekati Diamond Mine (BHP Billiton, April 2003)
11 April 2003Report
BHP Billiton's Air Quality Management and Monitoring Plan for the Ekati Diamond Mine (2003) establishes objectives, management strategies, and monitoring programs to preserve ambient air quality throughout the mine's operational life. The plan encompasses emissions control (from fuel combustion, ore processing, and mobile equipment), workplace air quality management, fugitive dust control, high-volume air sampling, meteorological monitoring, snow surveys, vegetation/lichen studies, and emissions calculations for NOx, SOx, and greenhouse gases.
Air Quality Particulate Matter Monitoring Development Plans
Air Quality Monitoring Report, Ekati Diamond Mine (BHP Billiton, December 2002)
1 December 2002Report
This comprehensive air quality monitoring report for the Ekati Diamond Mine covers 1998-2001 data, analyzing total suspended particulates, snow chemistry, and emissions from mining operations to assess environmental impacts. The report concludes that air quality objectives appear to be met at mineral claim boundaries, with dust and metal deposition limited to approximately 5 km from mine activities, though gaseous emissions show broader atmospheric distribution.
Air Quality Particulate Matter Monitoring Greenhouse Gas Water Quality
Northwest Territories Air Quality Report, 1999/2000 (GNWT, June 2001)
6 June 2001Report
The 1999/2000 Northwest Territories Air Quality Report presents air quality monitoring data collected by RWED from monitoring stations in Yellowknife, Snare Rapids, and Fort Liard, tracking parameters including dust, arsenic, lead, SO2, ozone, and acid precipitation. The report documents a significant improvement in air quality following the closure of Giant Mine in October 1999, with substantial decreases in SO2 and arsenic levels.
Air Quality Particulate Matter Monitoring Regulatory
Air Quality Monitoring, Ekati Diamond Mine (BHP Billiton, May 1999)
1999Report
BHP Diamonds Inc. 1998 Air Quality Monitoring Annual Report (Yellowknife, May 3 1999). Documents NOx/SOx emissions and lichen-based bioindication of ambient air quality (sulphur correlations, Laaksovirta & Olkkonen 1977/1979; Manninen et al. 1991), with eutrophication risks of nitrogen deposition (Wetzel 1983), and tissue metals analytical results at monitoring stations AQ-1 and AQ-6 in the Project Area (August 1998 — Lithium, Molybdenum, Nickel, Selenium, Silver, Strontium, Thallium, Titanium, Uranium, Vanadium, Zinc, Mercury). Includes detection-limit data and station maps.
Air Quality Monitoring Particulate Matter
Air Quality Monitoring Report, Ekati Diamond Mine (BHP Billiton, April 1999)
30 April 1999Report
BHP's 1998 Air Quality Monitoring Report for the Ekati Diamond Mine documents emissions calculations, high-volume air sampling results showing elevated TSP levels in May and July, snow survey chemistry analysis identifying mine-related metal deposition in the Koala watershed, and lichen tissue biomonitoring detecting significantly elevated trace metals near mining operations compared to control areas.
Air Quality Monitoring Particulate Matter
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
Meteorology, Hydrology and Air Quality Studies, 1997 Environmental Data Report, Ekati Diamond Mine (BHP Billiton, January 1998)
9 January 1998Report
This 1997 environmental data report for the BHP Ekati Diamond Mine documents meteorology, hydrology, and air quality baseline monitoring conducted by Rescan Environmental Services. The report covers climate data from automated weather stations, stream flow measurements at seven hydrology sites, and total suspended particulate air quality monitoring, comparing 1997 results with historical data and regional reference stations.
Monitoring Air Quality Particulate Matter Development Plans
Air Quality Monitoring Program, Ekati Diamond Mine, Binder 3 (BHP Billiton, 1998 to 2008)
1998–2008Report
Air Quality Monitoring Binder 3 for the Ekati Diamond Mine (BHP Billiton). Includes April 24 GNWT air-quality and emissions meeting notes (May 2008), 2005 Air Quality Monitoring Program and CALPUFF Air Dispersion Modelling Assessment reports release, Air Quality Management and Monitoring Plan (AQMP) status updates by Eric Denholm (BHPB) and Carole Mills (IEMA), Rescan ISC3 modelling commentary, BHP diesel-fuel emission factors (0.84 t SOx and 58.8 t NOx per million litres of diesel; ~50 million litres/year), and reprints of Pomeroy & Jones (1996) "Wind-Blown Snow: Sublimation, Transport and Changes to Polar Snow" (NATO ASI Series Vol I 43).
Air Quality Monitoring Correspondence Development Plans
Effects on Air Quality, EIS Additional Information Response, Section 12 (BHP Billiton, December 1995)
15 December 1995Regulatory Filing
This response to a BHP Review Panel request presents worst-case air quality dispersion modelling results for nitrogen dioxide, sulphur dioxide, and total suspended particulates at the Ekati Diamond Mine for years 2000 and 2006, demonstrating that predicted concentrations remain below or at Canadian Ambient Air Quality Objectives. The document details revised emission factors, meteorological data, mixing heights, and proposes monitoring programs including lichen biomonitoring to verify model predictions and detect impacts on local flora.
Air Quality Particulate Matter Monitoring Regulatory
Snow Atmosphere Interactions in Arctic Snowpacks, Net Fluxes of NO3, SO4 and Influence of Solar Radiation (H.G. Jones, INRS-Eau, 1993)
~1993Report
Approximate date — inferred from filename
This conference paper presents field experiments conducted in April 1992 near Inuvik, Canada, investigating net fluxes of nitrate and sulfate between arctic snow surfaces and the atmosphere, with particular focus on the influence of solar radiation. Results show solar radiation had no significant effect on NO3 and SO4 exchange, while sulfate exhibited dry deposition in the second experiment with a calculated deposition velocity of 0.09 cm s⁻¹.
Air Quality Monitoring Water Quality Particulate Matter

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