2008/2009 Long Lake Containment Facility Nitrate In Situ Treatment Test, Ekati Diamond Mine (BHP Billiton, April 2010)
This report documents a two-phase nitrate in situ treatment test conducted at the Long Lake Containment Facility (LLCF) at the Ekati Diamond Mine during 2008-2009, where phosphorus fertilizer additions stimulated phytoplankton growth to reduce elevated nitrate concentrations in minewater. Phase II (2009) added 16 tonnes of monopotassium phosphate to Cell D, achieving a 19% reduction in nitrate load while maintaining containment and monitoring potential secondary effects in downstream waters.
- Date
- Document type
- Report
- Parties
- BHP Billiton Canada Inc., Rescan Environmental Services Ltd., Wek'èezhii Land and Water Board
- Locations
- Ekati Diamond Mine, Long Lake Containment Facility, Cell A, Cell B, Cell C, Cell D, Cell E, Beartooth pit, Leslie Lake, Northwest Territories, Yellowknife
- Parameters
- nitrate, phosphorus, phytoplankton biomass, chlorophyll a, water quality, nitrogen, ammonia, nitrite, dissolved oxygen, pH, temperature, conductivity, silicate, organic carbon, metals, zooplankton, sedimentation, algal growth, eutrophication
- Pages
- 162
Original document
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