Change Canadas Presentation to the Wekezhi Land and Water Board - - PowerPoint PPT Presentation

Environment and Climate Change Canada’s Presentation to the Wek’èezhìi Land and Water Board Regarding DDEC’s Proposed Misery Underground Water Licence Amendment

WLWB Public Hearing Behchoko, NT Bradley Summerfield Meagan Tobin EPOD February 7-8, 2018

Page 2 – 1er février 2018

ECCC’s Mandate

• Preserve and enhance the quality of the natural

environment

• Conserve Canada’s renewable resources
• Conserve and protect Canada’s water resources
• Forecast daily weather conditions and warnings
• Enforce rules relating to boundary waters
• Coordinate environmental policies and programs for the

federal government

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How ECCC Fulfills its Mandate

Relevant acts and regulations:

• Department of the Environment Act
• Canadian Environmental Protection Act
• Fisheries Act – Pollution prevention provisions
• Migratory Birds Convention Act
• Species at Risk Act

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Recommendation 1 – Misery Underground (MUG) Nitrate Effluent Quality Prediction Update

ECCC Recommends:

• Nitrate concentrations in the water stored in the Misery

pit should be monitored regularly during the filling of the pit and the modelling be updated to ensure that any high nitrate concentrations that may cause the effluent to be deleterious are identified early so that appropriate mitigation measures can be implemented.

• DDEC should ensure that best management practices

are used for nitrate source reduction for seepage from the Jay Waste Rock Storage Area.

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Recommendation 2 – MUG Phosphorus Effluent Quality Prediction Update

ECCC Recommends:

• Phosphorus concentrations in the water stored in the

Misery pit should be monitored regularly during the filling

• f the pit and the modelling be updated to ensure

effluent discharge does not alter the trophic status of Lac du Sauvage.

• Total Phosphorus (TP) benchmarks should be

established and monitoring of TP within the effluent plume area should take place (water quality and sediments) with contingency plans for mitigation if benchmarks are reached.

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Recommendation 3 – King Pond Settling Facility Discharge Quantity and Dilution Factor

ECCC Recommends:

• The quantity of water that will be discharged from the

King Pond Settling Facility into the Cujo Lake annually during the Misery Underground Project should be confirmed.

• The applicability of the dilution factor that was derived

based on the Lynx amendment to the Misery Underground Project should be assessed.

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Thank-you