27 October 2017
From 1866 to 1966, the shore of the St. Lawrence River in the sector of the Bonaventure Expressway was used as a landfill site for industrial and household waste. To deal with the impact of a century’s worth of pollution, The Jacques Cartier and Champlain Bridges Incorporated (JCCBI) launched a major environmental project in spring 2016.
The run-in period for the west sector of the Solution Bonaventure project is complete. The system will now be operational for the next 15 years.
“We are very proud to start this new and very promising phase. The containment system, which consists of a hydraulic barrier of 32 pumping wells, will treat 288 m3 of contaminated water a day before discharging it back into the St. Lawrence River,” said Martin Chiasson, Director, Environment at JCCBI.
Through active pumping, this barrier intercepts groundwater contaminated with ammonia nitrogen, polycyclic aromatic hydrocarbons (PAH) and dissolved metals and then carries it to an on-site treatment system. Once the water has been treated and tested for compliance with the applicable criteria, it is discharged into the river through an existing outlet. See how the on-site treatment system works.
“The goal of this solution is to improve the quality of the water flowing into the river and protect biodiversity. With this system, we are implementing a responsible and innovative method to manage the complex problems caused by this unfortunate environmental legacy,” added Martin Chiasson of JCCBI.
This project is a partnership with the Ministère du Développement durable, de l’Environnement et de la Lutte contre les changements climatiques (MDDELCC).
Learn more about JCCBI’s projects to protect the St. Lawrence River.