What is the Opportunity?As part of an alliance agreement, Aecon has been awarded a contract in an Aecon-led partnership with Kiewit Nuclear Canada by Ontario Power Generation (OPG) for the execution phase on the Darlington New Nuclear Project (DNNP) in Clarington, Ontario. In 2025, Aecon began the construction of the Unit 1 Small Modular Reactor at the Darlington site.Job SummaryThe 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.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 ControlMonitor 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.Manage sludge, separated solids, and oil waste.Operate dewatering units and monitor cake quality.Coordinate waste disposal as per environmental regulations.Health, Safety & Workplace (HSE)Follow all site safety and environmental procedures.Handle chemicals safely using proper PPE.Prevent spills, overflows,



and environmental incidents.Reporting & CoordinationReport daily operations, downtime, and issues to the Supervisor.Coordinate with TBM, slurry, dewatering, and site teams.Support inspections by the client or authorities.Pay RateEffective May 1, 2025: $51.44/hrEffective May 1, 2026: $52.80/hrEffective May 1, 2027: $54.39/hrWe 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), Métis 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.As part of our commitment to fair and transparent hiring practices, Aecon may use artificial intelligence (AI) tools to assist in screening and reviewing candidates. These tools are applied responsibly and in accordance with applicable privacy laws and Aecon’s AI Usage Policy. All final decisions are made by qualified Aecon team members.#J-18808-Ljbffr

📌 Stp Operator (Unionized) - $51.4 An Hour (Millbrook)
🏢 Aecon
📍 Millbrook