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Matapédia-Mitis Multi-facility

gbi produced the environmental impact study for the multi-facility waste management project of the Matapédia and Mitis RCMs. This study, which was used by the Bureau d'audiences publiques sur l'environnement (BAPE/Public Environmental Consultation Commission), is the springboard for a major project for the Lower St. Lawrence region.

Waste Management and Technical Landfills
Waste Management
2021 - en cours

Sound waste management

This multi-facility initiative is a modern example of sound waste management, combining an engineered landfill site, composting and an ecocentre, which also includes leachate treatment using membrane technology.  

Adopting a community sustainable-development approach, the consortium, made up of gbi and SNC-Lavalin, carried out an environmental impact study (EIS) for the multi-facility waste management project. This three-pronged project involves the establishment of a composting facility, an engineered landfill site and an ecocentre.

Composting facility

An open-air composting facility is a simple, low-cost solution to treat the 2,000 to 3,000 tons of organic matter generated and ultimately collected from brown bins in the Matapédia and Mitis regional county municipalities.

Engineered landfill site

An engineered landfill site is a waterproof, hermetically sealed site that eliminates waste in an environmentally responsible manner.

The engineered landfill site consists of 8 cells with a life expectancy of approximately 5 years, for a total of 35 years of use. Unlike conventional engineered landfill sites which require the use of a mobile compactor (heavy equipment that crushes waste), the Commission has opted for compressed bales in a closed building for its landfill project.

A leachate treatment station treats leachate to meet the strict water quality standards established by the Environment Ministry. For this project, the Commission recommended the use of new technologies with better treatment capabilities and treatment that exceeds the ministry’s standards in order to reduce its impact on ecosystems as much as possible.


Within the framework of this project, an ecocenter will make it possible to divert these materials from the landfill, thus making it possible to preserve the site and extend its lifespan. The terms of use will be determined in the future. 

This infrastructure made available to the citizens of the Mitis RCMs recovers dry materials with a potential for recovery. When these materials arrive at the ecocenter, they are sorted and classified. By promoting the sorting of materials at the source, the ecocenter allows for the reuse or recovery of recyclable materials and thus contributes to the reduction of the mass of waste destined for landfill. The center will also resell the items to give them a second life.