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News, Ontario

Peninsula Harbour Sediment Capping Project Awarded to Milestone

Posted on May 13, 2012

Milestone Environmental Contracting Inc. has been awarded the contract to complete the capping of historically contaminated sediment in the Peninsula Harbour, which is a Great Lakes Area of Concern. The $7.3 million sediment capping project will begin this month.

Sediment in Peninsula Harbour is contaminated by mercury and polychlorinated biphenyl (PCBs) from historical discharges of wastewater and storm water runoff from the local pulp mill, which closed in 2009. A 15-20 centimetre layer of clean sand will be placed on top of the contaminated sediment. This is said to accelerate natural recovery of Jellicoe Cove in Peninsula Harbour by reducing plant, animal and fish exposure to chemicals in the sediment, and the spread of contaminated sediments from Jellicoe Cove to the rest of the harbour. This is the first time that a thin-layer capping will be used to manage contaminated sediments in Canada.

Ontario’s funding for the Peninsula Harbour sediment capping project includes a $3 million settlement from a former owner of the pulp mill, Ball Packaging Products Canada Corp., and $1.6 million in provincial funding.

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