What is the project monitoring?

• Water quality in rivers, creeks, Lake Ontario

• Reduction in contaminant concentrations in forage fish
• Sediment quality and fish habitat

Why is the project monitoring water quality, fish and fish habitat?

• To ensure measures to prevent the release of contaminants into watercourses are effective
• To track the recovery of conditions in Port Hope Harbour after cleanup and habitat improvement

What measures is the project taking to protect water quality, fish and fish habitat?

• Install stream diversion, erosion and sediment control structures (silt fences) around work areas
• Isolate work at Port Hope Harbour from Lake Ontario through use of silt curtains
• Place daily cover on excavated surfaces near watercourses
• Suspend work near watercourses during heavy rainfall
• Collect, sample and treat water that comes in contact with contaminants
• Discharge water from work sites to approved treatment facilities
• Undertake habitat improvements following the cleanup at Port Hope Harbour
• Establish a Spill Response Plan

How is the project monitoring water quality, fish and fish habitat?

• Sample and analyze water for radiological (radium-226, uranium) and non-radiological (heavy metals) contaminants at:

1. Highland Drive South Creek
2. Brewery Creek
3. Alexander Creek
4. Port Granby Creek
5. Brand Creek (downstream of the long-term waste management facility)
6. Lake Ontario (around treated leachate discharge)
7. Confluence of Ganaraska River and Port Hope Harbour

• Conduct toxicity testing of treated leachate discharge to ensure protection of fish and their habitat
• Analyze whole fish samples (sand shiner and longnose dace) for radiological and non-radiological contaminants in the vicinity of Port Hope Harbour
• Sample and analyze sediment for radiological and non-radiological contaminants at Port Hope Harbour following cleanup
• Measure suspended solids (turbidity) using a Turbidometer and Secchi disk (in deeper waters) in water near remediation sites