Search the archive

Find documents by name, keyword, or question across the IEMA Ekati archive.

Showing only documents tagged Geochemistry.

129 documents · Page 1 of 7

Sort

Waste Rock and Ore Storage Management Plan (WROMP), Version 13.1, Reasons for Decision, Ekati Diamond Mine (Wek'èezhìı Land and Water Board, February 2026)
24 February 2026Regulatory Filing
The Wek'èezhìı Land and Water Board approved Version 13.1 of the Waste Rock and Ore Storage Management Plan (WROMP) for the Ekati Diamond Mine on February 24, 2026, with direction for submission of Version 13.2 within 120 days and specific requirements regarding thermistor installation, seepage monitoring at Point Lake, and closure planning for the Pigeon WRSA.
Waste Rock Regulatory Water Licence
Waste Rock and Ore Storage Management Plan (WROMP), Version 13.1, Agency Comments, Ekati Diamond Mine (Independent Environmental Monitoring Agency, July 2025)
9 July 2025Letter
The Independent Environmental Monitoring Agency submits comments on Burgundy Diamond Mines' Waste Rock and Ore Management Plan v13.1, recommending enhanced seepage monitoring at Point Lake using groundwater wells, clarification on trace metals methodology comparisons, specific requirements for monthly visual inspections of the Point Lake Overburden Stockpile, and updated watershed information for Sable facilities.
Waste Rock Correspondence Monitoring
Waste Rock and Ore Storage Management Plan (WROMP), Version 13.1, Ekati Diamond Mine (Arctic Canadian Diamond Company, May 2025)
29 May 2025Regulatory Filing
Burgundy Diamond Mines submits Version 13.1 of the Waste Rock and Ore Storage Management Plan (WROMP) for the Ekati Diamond Mine to the Wek'èezhìi Land and Water Board, incorporating 16 revisions required by the Board's Decision #2 and addressing regulatory requirements under Water Licence W2022L2-0001. The plan describes waste rock storage areas, geochemical characterization, seepage management, monitoring protocols, and adaptive management strategies for multiple kimberlite pipe developments.
Waste Rock Acid Rock Drainage Geochemistry
Waste Rock and Ore Storage Management Plan (WROMP), Version 13.0, Reasons for Decision, Ekati Diamond Mine (Wek'èezhìı Land and Water Board, February 2025)
28 February 2025Regulatory Filing
The Wek'èezhìı Land and Water Board approved Version 13.0 of the Waste Rock and Ore Storage Management Plan (WROMP) for the Ekati Diamond Mine on February 28, 2025, and directed submission of Version 13.1 within 90 days with 16 specified revisions addressing seepage monitoring, thermal data collection, waste rock characterization, and closure planning requirements.
Waste Rock Regulatory Water Licence
Interim Closure and Reclamation Plan (ICRP) 2024 Annual Progress Report, Appendix C, Effective Neutralization Potential Report, Ekati Diamond Mine (Arctic Canadian Diamond Company, January 2025)
10 January 2025Report
This is a 2024 supplemental report on the Effective Neutralization Potential (ENP) investigation at the Ekati Diamond Mine, prepared by Geosyntec Consultants for Arctic Canadian Diamond Company. The report presents results from extended kinetic testing (up to 162 weeks) and post-kinetic mineralogical analysis to evaluate how site-specific variables such as temperature, mineralogy, particle size, and mineral reactivity affect the acid neutralization capacity of waste rock, with findings that metasediment samples maintained sufficient ENP to neutralize acidity until Week 108, after which pH decreased toward acidic conditions, and that temperature, sulphide oxidation rates, and silicate mineral weathering are key factors influencing ENP at the mine.
Waste Rock Acid Rock Drainage Geochemistry
Waste Rock and Ore Storage Management Plan (WROMP), Version 13.0, Ekati Diamond Mine (Arctic Canadian Diamond Company, September 2024)
26 September 2024Regulatory Filing
Burgundy Diamond Mines submits Version 13.0 of the Waste Rock and Ore Storage Management Plan (WROMP) for the Ekati Diamond Mine to the Wek'èezhìi Land and Water Board for approval under Water Licence W2022L2-0001, incorporating revisions from prior board decisions and addressing seepage management, geochemical characterization, and monitoring protocols for multiple waste rock storage areas.
Waste Rock Regulatory Acid Rock Drainage
Waste Rock and Waste Rock Storage Area Seepage Survey Report, Ekati Diamond Mine (Arctic Canadian Diamond Company, April 2024)
1 April 2024Report
This 2023 Waste Rock and Waste Rock Storage Area Seepage Survey Report documents the geochemical monitoring of waste rock and coarse kimberlite rejects, and seepage quality monitoring at multiple waste rock storage areas at the Ekati Diamond Mine. The report identifies 12 seeps of potential concern based on exceedances of effluent quality criteria or 95th percentile historical thresholds, with detailed temporal trend analysis and adaptive management recommendations for each waste rock storage area.
Geochemistry Waste Rock Monitoring
Waste Rock and Ore Storage Management Plan (WROMP), Version 12.0, Reasons for Decision, Ekati Diamond Mine (Wek'èezhìı Land and Water Board, January 2024)
31 January 2024Regulatory Filing
The Wek'èezhìı Land and Water Board approved Version 12.0 of the Waste Rock and Ore Management Plan (WROMP) for the Ekati Diamond Mine on January 31, 2024, with conditions requiring submission of Version 13.0 within 90 days of Seepage Response Framework approval and increased seep screening frequency until the framework is implemented.
Waste Rock Regulatory Water Licence
3-Year Waste Rock Storage Area Seepage Program Report, Reasons for Decision, Ekati Diamond Mine (Wek'èezhìı Land and Water Board, January 2024)
31 January 2024Regulatory Filing
The Wek'èezhìı Land and Water Board approved Arctic Canadian Diamond Company's 2022 3-Year Waste Rock Storage Area Seepage Survey Report on January 31, 2024, with requirements for future improvements and development of a Seepage Response Framework to address concerns about seep screening criteria, adaptive management responses, and EQC exceedances.
Waste Rock Regulatory Water Quality
Comments on 2022 3-Year Seepage Report, Ekati Diamond Mine (Independent Environmental Monitoring Agency, December 2023)
11 December 2023Letter
The Independent Environmental Monitoring Agency provides detailed comments on Arctic Canadian Diamond Company Ltd.'s 3-year Seepage Report, addressing concerns about receiving environment definitions, adaptive management response triggers, geochemical characterization, seeps of potential concern identification, reference seep monitoring, and data interpretation issues related to the Ekati Diamond Mine operations.
Waste Rock Water Quality Effluent Quality Criteria
Waste Rock and Ore Storage Management Plan (WROMP), Version 12.0, Part 1, Ekati Diamond Mine (Arctic Canadian Diamond Company, November 2023)
9 November 2023Regulatory Filing
Burgundy Diamond Mines submits Version 12.0 of the Waste Rock and Ore Storage Management Plan (WROMP) for the Ekati Diamond Mine to the Wek'èezhìi Land and Water Board for approval under Water Licence W2020L2-0004. The submission incorporates the Point Lake Project, addresses Board decisions from previous approvals, and includes updated geochemical characterization, seepage management protocols, and adaptive management procedures for waste rock storage areas.
Waste Rock Acid Rock Drainage Geochemistry
Waste Rock Storage Area (WRSA) 3-Year Seepage Program Report, Part 2, Ekati Diamond Mine (Arctic Canadian Diamond Company, May 2023)
1 May 2023Report
This 2022 3-Year Waste Rock and Waste Rock Storage Area Seepage Survey Report documents environmental monitoring results from the Ekati Diamond Mine, analyzing seepage chemistry from multiple waste rock storage areas (Fox, Misery, Lynx, Panda, and Koala WRSAs) to assess water quality, metal/metalloid concentrations, and potential environmental concerns from 2002-2022.
Waste Rock Geochemistry Monitoring
Waste Rock Storage Area 3-Year Seepage Program Report, Part 3, Ekati Diamond Mine (Arctic Canadian Diamond Company, May 2023)
1 May 2023Report
Laboratory analytical results from Bureau Veritas for water samples collected from waste rock storage area seepage at Ekati Diamond Mine in June 2022, including chemical analyses, toxicology bioassays, and quality assurance documentation for three seepage monitoring stations.
Waste Rock Water Quality Monitoring
Waste Rock Storage Area (WRSA) 3-Year Seepage Program Report, Part 4, Ekati Diamond Mine (Arctic Canadian Diamond Company, May 2023)
1 May 2023Report
This 2022 3-Year Waste Rock and Waste Rock Storage Area Seepage Survey Report presents temporal trend graphs (1999–2022) for multiple chemical parameters measured in seepage from the Panda/Koala and SW waste rock storage areas at Ekati Diamond Mine, including total and dissolved concentrations of metals, nutrients, and suspended solids.
Waste Rock Geochemistry Monitoring
Waste Rock Geochemical Characterization and Kinetic Testing Report, Part 2, Ekati Diamond Mine (Arctic Canadian Diamond Company, August 2022)
1 August 2022Report
This report documents humidity cell test results and geochemical assessment of metasediment from the Point Lake Project at Ekati Diamond Mine, addressing water licence requirements for kinetic testing and investigation of NAG pH discrepancies. The study evaluates acid generation potential, metal leaching, and parameters of concern in Point Lake metasediment to inform waste rock storage area seepage predictions.
Waste Rock Acid Rock Drainage Geochemistry Regulatory
Waste Rock and Ore Storage Management Plan (WROMP), Version 11, 2019 Seepage Survey Report, Reasons for Decision, Ekati Diamond Mine (Wek'èezhìı Land and Water Board, March 2022)
15 March 2022Regulatory Filing
The Wek'èezhìi Land and Water Board issued a Reasons for Decision on March 15, 2022, approving Arctic Canadian Diamond Company's 2019 Seepage Survey Report but rejecting Version 11.0 of the Waste Rock and Ore Storage Management Plan (WROMP), requiring substantial revisions by May 30, 2022 to address water licence compliance issues related to seepage management and geochemical characterization.
Waste Rock Acid Rock Drainage Water Quality
Waste Rock and Ore Storage Management Plan (WROMP), Version 11.0, Ekati Diamond Mine (Arctic Canadian Diamond Company, June 2021)
29 June 2021Report
Arctic Canadian Diamond Company submitted Waste Rock and Ore Storage Management Plan (WROMP) Version 11.0 to the Wek'èezhìi Land and Water Board addressing regulatory directives and incorporating a new Seepage Response Framework to manage waste rock seepage quality at the Ekati Diamond Mine. The plan details geochemical characterization, storage area designs, monitoring protocols, and adaptive management procedures for multiple kimberlite pipes and waste rock storage areas across the mine site.
Waste Rock Acid Rock Drainage Geochemistry
Seepage Survey Report, Ekati Diamond Mine (Arctic Canadian Diamond Company, April 2021)
1 April 2021Report
This 2020 annual waste rock and seepage survey report for the Ekati Diamond Mine documents geochemical monitoring of waste rock storage areas and seepage quality from multiple mine pits and underground operations. The report identifies five seeps of potential concern based on exceedances of effluent quality criteria and 95th percentile screening thresholds, with detailed adaptive management responses outlined for each.
Waste Rock Acid Rock Drainage Geochemistry
Waste Rock and Ore Storage Management Plan (WROMP) Version 11 and Seepage Response Framework Version 1, Agency Comment Letter, Ekati Diamond Mine (Independent Environmental Monitoring Agency, August 2020)
19 August 2020Letter
The Independent Environmental Monitoring Agency provides detailed comments on the Ekati Diamond Mine Waste Rock and Ore Storage Management Plan Version 11 and Seepage Response Framework Version 1, recommending that neither document be approved in their current form. The letter identifies concerns regarding waste rock characterization methods, acid-base testing procedures, discontinuation of Sable waste rock sampling, diabase risk mitigation monitoring, and the adequacy of seepage threshold derivation and management approaches.
Waste Rock Acid Rock Drainage Geochemistry
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

Tags

129 documents · Page 1 of 7