Find documents by name, keyword, or question across the IEMA Ekati archive.
Dominion Diamond Mines presents a framework for managing Waste Rock Storage Area (WRSA) seepage in response to a WLWB directive, proposing ecologically-derived thresholds and adaptive management action levels to replace Environmental Quality Criteria as the regulatory control for seepage monitoring and response.
Dominion Diamond Mines' Surveillance Network Program monthly report for September 2019 under Water Licence W2012L2-0001, documenting 24 water samples collected from monitoring stations across the Ekati Diamond Mine with field parameters and comprehensive analytical results for physical, chemical, and metal constituents.
The Wek'èezhìi Land and Water Board issued a decision on August 23, 2019 regarding Dominion Diamond Mines' 2018 Seepage Survey Report for the Ekati mine, approving discontinuance of summer rainfall sampling at Fox WRSA while directing substantial updates to the Waste Rock and Ore Storage Management Plan including tiered action levels, clarified receiving environment definitions, and enhanced adaptive management frameworks for seepage monitoring and response.
The Independent Environmental Monitoring Agency confirms it has reviewed Dominion Diamond Mines ULC's Chloride Response Plan version 2.1 and has no concerns with the plan as submitted.
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.
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.
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.
The Wek'èezhìi Land and Water Board approved Dominion Diamond Mines' Wastewater and Processed Kimberlite Management Plan (WPKMP) Version 9.0 on June 13, 2019, which addresses previous board direction and proposes reduced inspection frequency for processed kimberlite deposition into Panda and Koala pits. The decision includes requirements for closure and reclamation planning consistency with the approved Interim Closure and Reclamation Plan.
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.
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.
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.
The Independent Environmental Monitoring Agency reviewed and approved Waste Process Kimberlite Management Plan Version 9.0 submitted by Dominion Diamond Mines ULC, with no concerns regarding the plan's updates to Wek'eezhii Land and Water Board directives and approval of the proposed change to Processed Kimberlite pipeline inspection frequency.
Dominion Diamond Mines submits Version 9.0 of the Ekati mine Wastewater and Processed Kimberlite Management Plan to the Wek'èezhìi Land and Water Board for approval, addressing previous directives and proposing changes to operational monitoring frequency at the Long Lake Containment Facility and Panda/Koala fine processed kimberlite pipeline, while incorporating closure and reclamation planning requirements.
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.
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.
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.
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.
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.
The Independent Environmental Monitoring Agency submits its review of Dominion Diamond Ekati ULC's 2017 Aquatic Effects Monitoring Plan Annual Report to the Wek'eezhii Land and Water Board, noting it is a high-quality report covering aquatic environmental impacts downstream of the Ekati mine, with comments on the Aquatic Response Framework to be submitted separately.
Dominion Diamond Ekati ULC submits Version 8.0 of the Wastewater and Processed Kimberlite Management Plan and a Panda/Koala Deposition Study to the Wek'èezhìi Land and Water Board, requesting approval to commence Fine Processed Kimberlite deposition into the Panda/Koala Processed Kimberlite Containment Area in early 2019, with updated site-wide management procedures incorporating the Jay and Misery Underground Projects.