STP Operator (Unionized)

STP Operator (Unionized)

Aecon Group

The STP Operator is responsible for operating and monitoring the Separation & Treatment Plant to efficiently separate solids, oil, and contaminants from wastewater generated during construction and tunnelling activities. The role ensures safe operation, environmental compliance, and continuous plant availability to support site operations.

Key Responsibilities – Plant Operation

• Operate and monitor separation and treatment units including settling tanks, separators, hydrocyclones, clarifiers, oil-water separators, and chemical dosing systems.
• Control pumps, valves, mixers, and conveyors to maintain steady plant throughput.
• Adjust flow rates, pressures, and dosing to optimize separation efficiency.

Monitoring & Quality Control

• Monitor inlet and outlet water quality (pH, turbidity, suspended solids, oil content).
• Take routine samples and maintain operational logs.
• Ensure treated water meets discharge or reuse requirements.

Solids & Waste Handling

• Manage sludge, separated solids, and oil waste.
• Operate dewatering units and monitor cake quality.
• Coordinate waste disposal as per environmental regulations.

Health, Safety & Environment (HSE)

• Follow all site safety and environmental procedures.
• Handle chemicals safely using proper PPE.
• Prevent spills, overflows, and environmental incidents.

Reporting & Coordination

• Report daily operations, downtime, and issues to the Supervisor.
• Coordinate with TBM, slurry, dewatering, and site teams.
• Support inspections by the client or authorities.

Reason for vacancy: Evergreen

Pay Range:

Per the HCAT Collective Agreement:

Effective May 1, 2025: $51.44/hr

Effective May 1, 2026: $52.80/hr

Effective May 1, 2026 $54.39/hr

We strongly encourage applicants who identify as Indigenous to apply to work with us on the Darlington New Nuclear Project. At Aecon, Indigenous is an umbrella term for First Nations (status and non-status), Metis and Inuit.

Aecon fosters diversity, inclusion and belonging within and across our organization. We welcome all to apply including, women, visible minorities, Indigenous peoples, persons with disabilities, and persons of any sexual orientation or gender identity.

We are committed to adhering to the objectives and requirements outlined in the Accessible Canada Act (ACA), and to meeting the accessibility needs of persons with disabilities in a timely manner. Through the implementation of the requirements of the ACA and its applicable regulations, appropriate accommodations will be provided upon request throughout the interview and hiring process.