Landfill Expansion of Non-Hazardous Waste Management Facility

The landfill is a non-hazardous waste management facility located in Quebec. It primarily accepts municipal solid waste as well as end-of-life materials from local industries, businesses, and institutions. While both local and federal Canadian authorities are actively working to reduce long-term reliance on landfilling as a waste disposal method, a strategic decision was made to expand the landfill to ensure continued, reliable service to the community. This expansion includes a modern gas recovery system designed to capture and utilize landfill gas, thereby reducing greenhouse gas emissions and supporting a more sustainable waste management approach.

As part of a joint venture, our team played a critical role in executing this landfill expansion. The project involved the mix design and construction of a soil-bentonite slurry wall, which serves as a vital environmental containment measure. Spanning 210,000 square feet and reaching depths of up to 60 feet, the wall was constructed to provide a low-permeability barrier that prevents the migration of landfill leachate into the surrounding subsurface environment. The soil-bentonite backfill was carefully engineered and installed to ensure long-term stability, performance, and compatibility with existing site conditions.

By effectively isolating the municipal waste within the expanded landfill footprint, the completed cutoff wall safeguards the surrounding community and groundwater resources. This project represents a critical investment in environmental protection and infrastructure resilience, supporting both public health and long-term waste containment goals.