
Because you Asked is a new feature on my social media channels and in my monthly newsletter! I use this space to provide helpful context and information about issues the community is asking about. Today we’re talking about remediation work taking place at the Whitby Harbour.
The Whitby Harbour remediation project is being completed by Fisheries and Oceans Canada (DFO).
Whitby Harbour is federal property owned by DFO.
The Town of Whitby leases the property for the Whitby Marina, and a portion is sub-leased to the Whitby Yacht Club.
This project is being undertaken because sediment at the bottom of the harbour contains levels high levels of chemicals called dioxins and furans that could be harmful to fish, birds, and humans
The contamination has been traced to an adjacent upstream property along Pringle Creek. Over time, the contaminated sediments were carried downstream into Whitby Harbour.
Remediation of the upstream properties along Pringle Creek was started in 2008 by the province.
The sediment in Whitby Harbour and a small area of Pringle Creek needs to be cleaned remediated to reduce potential risks.
Since the early 2000s, many environmental studies have been undertaken at Pringle Creek and Whitby Harbour to determine the extent and risks of the chemicals.
The studies found that the risks to birds and mammals are low. The risks to humans and fish are moderate and need to be managed.
DFO has developed a Remedial Action Plan to guide the cleanup of Whitby Harbour.
Work started this fall and will be complete in Fall 2026.
Contaminated sediment is being removed by hydraulic dredging and placed in a temporary de-watering area. De-watered materials will then be trucked off-site to a licensed disposal facility.
The area proposed for temporary de-watering is the portion of Victoria Field, north of the Gordon Street parking lot.
The dewatering area will be constructed with two layers of geotextile liners at the bottom and sides. The liners will act as an impermeable barrier to prevent any potential leaching into the ground.
DFO says information collected to date indicates composition of the dredged sediment will not result in air emission or odour issues during the drying process.
The dredged sediment will stay wet while on site, meaning dust should not be an issue. If the sediment does dry out, a specialized fabric (geotextile) will be used as a cover to prevent dust.
The dewatering area will have two layers of specialized liners on the bottom and sides to prevent anything from leaking into the ground.
Click here for more information on the project.
To share questions, concerns, or feedback, contact DFO by email at DFO.OPInfoWhitby.MPO@dfo-mpo.gc.ca or call 1-833-551-2702.
Questions and concerns can also be directed to Whitby MP Ryan Turnbull at ryan.turnbull@parl.gc.ca or 905-665-8182.