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Former Meloche quarry : Start of closure work at the dry material landfill site

9 septembre 2019

Pierrefonds-Roxboro, September 9, 2019 - The Borough Council is very pleased to learn that GFL has finally obtained its certificate of authorization from the Government of Québec to complete the closure of the former Meloche quarry site, which became a dry material landfill site in 1999.

"It is with great enthusiasm that my Borough Council and I welcome this excellent news, which represents a turning point for residents living near the quarry. Thanks to our perseverance with the various stakeholders involved in the project, our citizens will finally be able to enjoy a better quality of life and reclaim the full enjoyment of their property. " said Mayor Dimitrios (Jim) Beis of the Pierrefonds-Roxboro Borough.

"Since GFL acquired the site in 2016, we have been working on developing an action plan and requesting the necessary authorizations to upgrade the facilities and improve the quality of life of the area's residents. When we obtained MECCC's approval to proceed last June, we were ready and work began in the last few weeks; it should be completed by the end of 2020," said Daniel Brien, Vice President, Environmental Compliance and Landfill Operations for GFL.

Monitoring Committee

Since the site opened, an activity monitoring committee has been working with the various operators to minimize the inconveniences caused to the residents of the neighbourhood. The committee, chaired by a municipal elected official, is composed of representatives of the Ministère de l'Environnement du Québec, the Service de l'Environnement de la Ville de Montréal, two local residents, representatives of the various departments of the Borough and representatives of the owner of the site.

The Ministry of Environment and Climate Change Control (MECCC) issued a certificate of authorization for the installation of a first biogas capture network and a flaring system in 2007.With the volume of materials accumulated on the site since the issuance of this authorization and the volume of biogas produced by the landfilled materials, the current system was no longer sufficient for the task. GFL therefore requested a new authorization from the Ministry to install a second network of larger and more powerful catchment wells and the addition of a new larger flare before proceeding with the complete closure of the site.

Closing work

Work began in early August to cover the site completely filled with dry materials from construction and demolition work.

To begin, thirty-five (35) new vertical wells will be installed and connected to collector pipes to capture the biogases that cause odours to escape into the neighbourhood.  The biogas captured by this new extraction network will be directed to the new larger flare, which will ensure the complete combustion and destruction of the biogas.

The site will then be completely covered with several layers of materials including a layer of sand that will be installed directly on the dry materials followed by an impermeable geomembrane that will prevent rainwater from coming into contact with the buried materials and biogas generated by the landfill site from escaping. A second layer of soil will be placed over the geomembrane to ensure its protection. Finally, a layer of soil suitable for vegetation will be put in place and seeded so that vegetation can grow on it.

Stormwater will be captured and managed by a water management system that will ultimately direct it to the municipal storm sewer system.

The work is expected to take approximately 18 months to complete. Nevertheless, they will be well in advance of the date set out in the agreement with Ville de Montréal, which ends in 2022.


Source: Communications Division