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)
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.
- Date
- Document type
- Letter
- Parties
- Independent Environmental Monitoring Agency, Wek'eezhii Land and Water Board, Canadian Arctic Diamond Company Ltd., Lorax Environmental Services Ltd., Dominion Diamond, Tłı̨cho Government, Yellowknives Dene First Nation, Łutsel K'e Dene First Nation, North Slave Metis Alliance, Kitikmeot Inuit Association, Government of the Northwest Territories, Crown-Indigenous Relations and Northern Affairs Canada
- Locations
- Ekati Diamond Mine, Yellowknife, Northwest Territories, Sable Waste Rock Storage Area, Lynx, Cujo Lake, Desperation Pond, Long Lake Containment Facility
- Parameters
- waste rock characterization, acid-base accounting, acid neutralizing potential, metal leaching potential, Sobek procedure, neutralization potential, acid potential, seepage quality, water quality benchmarks, sulphate, diabase, granite, carbonate neutralization potential, humidity cell testing, mass balance approach, aquatic effects, effluent quality criteria
- Pages
- 10
Original document
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