Environmental Rehabilitation – Port of Montreal

Client

ESSO, Shell, Xstrata, Montreal Port Authority (Administration Portuaire de Montréal), Montreal, Canada

Scope of Work

Engineering and project management for the decontamination of bays in the Port of Montreal.

ESSO, Shell, Xstrata and the Montreal Port Authority joined forces to voluntarily rehabilitate the bays in Sector 103 of the Port of Montreal. This project involved dredging more than 1.8 million cu. ft. of contaminated sediment to limit their migration into the St. Lawrence River and to create a healthy environment for marine life.

Dessau carried out several different environmental studies for the project start-up, evaluated and selected the technologies to be used, and provided the engineering and supervision of decontamination works.

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Challenges

  • Maintain port activities, including 7.7 million tonnes of crude oil and oil products per year.
  • Prevent hydrocarbon emissions from entering the river during the dredging works.
  • Minimize impact on riverside properties by controlling noise, dust and smells.
  • Respond to the specific needs of four clients.
  • Design and build a temporary platform for biological sediment treatment.
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