Key Areas of Uncertainty

The following questions focus on areas where the project documentation leaves important details unclear, relies heavily on modelling assumptions, or does not appear to provide long-term evidence.

Water Use and Discharge

• What is the total volume of water required by the RAS system when operating at minimum and full capacity?
• How were the projected water-withdrawal and effluent-discharge volumes calculated, including the 2,300 m³/day average discharge, the 4,000 m³/day withdrawal figure, and the 7,008 m³/day flow used for the OER assessment?
• What operating conditions, production stages, cleaning cycles, emergency events, or design contingencies correspond to each figure?
• Under what circumstances could water withdrawals or effluent discharge reach or exceed 2,300, 4,000, 7,008 m³/day projections?
• During droughts or periods of unusually low river flow, will water withdrawals be reduced?

Effluent Quality and Long-Term Effects

• Beyond the parameters assessed in the environmental study, will the company publish a complete list of substances expected in the final effluent, including projected annual loads, treatment-removal performance, detection limits, and monitoring frequency?
• How will the company determine whether long-term environmental changes are occurring, including potential cumulative effects over 10, 20, and 30 years of operation?
• What monitoring will be conducted to assess ecological conditions beyond effluent concentrations, including algae growth, aquatic plant growth, nutrient enrichment, and other indicators of ecosystem change?
• What monitoring will be conducted in river sediments around the discharge point, and for how long?
• How far downstream and across the river will environmental effects and effluent-related substances be monitored, and over what period of time?

Chemicals and Treatment Products

• Can Samonix provide a complete public inventory of all chemicals, treatment products, disinfectants, cleaning agents, coagulants, polymers, fish health products, and medications that may be used on site, including projected annual usage quantities?
• Which of these substances are expected to enter the wastewater stream, and at what concentrations are they expected to be present in the final effluent?
• What chemicals and treatment products will be used to clean tanks, piping, filtration systems, and processing facilities?
• Will antibiotics or other fish health treatments be used, and if so, how will their use, disposal, and potential release to the environment be managed?
• Have the potential cumulative or interactive effects of multiple chemicals in the discharge been assessed?
• What measures will be in place to prevent, detect, and respond to accidental chemical releases, spills, or treatment-system failures?

Dilution Modelling

• What field validation, if any, will be undertaken to confirm that in-river dilution and mixing-zone predictions remain accurate under winter conditions, low-flow periods, ice cover, diffuser degradation, partial port blockage, and changing river conditions?
• What contingency measures are planned if monitoring identifies unexpected ecological impacts?
• How will modelling predictions be verified once the facility is operating?
• If monitoring results differ from model predictions, will the company make corrective actions?

Aquatic Species and Habitat

• What post-relocation survival targets, monitoring duration, reporting requirements, and corrective measures will apply to relocated freshwater mussels, including species at risk?
• Will aquatic species and plants near the intake and diffuser be monitored after the facility begins operation, and for how long?
• Has the company evaluated the potential operational impacts of long-term noise, vibration, lighting, effluent discharge and other operational activity on aquatic wildlife?

Fish Health and Disease Management

• What types of fish diseases are considered most likely to occur at the facility, and what treatments or medications could be used during a disease outbreak?
• Can disease-related outbreaks be transferred from the facility to the river through wastewater?
• How would treatments affect wastewater quality?
• How would a large-scale fish mortality event be handled, and how would that affect wastewater?
• How will these situations be managed?

Drinking Water and Public Health

• Has any modelling been conducted to evaluate impacts on downstream drinking water intakes during equipment failures, treatment failures, or accidental releases?
• Will monitoring data be shared with municipalities that rely on the Ottawa River for drinking water?
• How would residents and municipalities be notified if a significant discharge event occurred?
• Has the potential impact of long-term chloride releases on downstream water quality been assessed?

Sludge and Waste Management

• Could sludge production exceed current estimates of approximately 35 m³ of sludge per day?
• What contingency measures will be in place if biomethanization facilities are unable to receive the material, how much on-site sludge storage capacity will be available, and for how long could it be stored during transportation, processing, or facility disruptions?
• What is the likelihood and effects of sludge contamination in the river?
• How will potential environmental risks associated with handling, transport, and use be managed?

Energy Use and Climate Impacts

• Has Hydro-Québec confirmed, in writing, that existing or planned infrastructure can provide sufficient reliable capacity for full production, including peak demand, backup-system requirements, and future expansion?
• What infrastructure upgrades, if any, are required before operation?
• Is there an independently reviewed lifecycle assessment of greenhouse gas emissions comparing emissions of imported salmon with locally produced salmon when all facility operations are considered?

Emergency Preparedness

• What contingency plans are in place for earthquakes, flooding, severe weather, prolonged power outages, fires, and critical infrastructure failures?
• How long can critical life-support, water treatment, and monitoring systems operate on backup power, and what measures are in place if outages exceed backup capacity?
• What quantities of ammonia, oxygen, fuel, and other hazardous materials will be stored on site, and has a worst-case consequence analysis been conducted for accidental releases, fires, or other emergencies?
• What emergency response procedures and containment measures are in place for chemical releases, spills, fires, wastewater treatment failures, or other incidents that could affect workers, nearby residents, or the Ottawa River?
• How will fish stocks, wastewater, and sludge be managed during prolonged equipment failures, disease outbreaks, or emergency shutdowns?
• What monitoring, reporting, and public notification procedures will be triggered by equipment failures, permit exceedances, human error, or other environmental incidents?

Closure and Long-Term Responsibility

• Will financial assurances be provided to guarantee decommissioning and environmental remediation?
• What, if any, monitoring will continue after closure?
• How will intake and outfall infrastructure be removed or managed at the end of the project's life?

Transparency and Public Accountability

• Will effluent, environmental monitoring, compliance, and performance data be made publicly available in a timely and accessible manner?
• Will independent third-party audits of environmental performance and regulatory compliance be conducted, and will the results be publicly disclosed?
• Will inspections, permit exceedances, incidents, spills, complaints, enforcement actions, corrective measures, and significant operational changes be publicly reported, and how will affected communities be notified?
• Will a public advisory or community liaison committee be established to review monitoring results, project performance, and community concerns?