Northwest Attachment Centre

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The public consultation process is now finished.

The Northwest Attachment Centre (NAC) project will involve constructing a new mainly underground infrastructure needed to maintain the métro network. By adding this attachment centre, the STM aims to reduce its asset maintenance deficit and ensure the longevity of its métro network.

Before moving into the neighbourhood, we would like to start a dialogue with the local community about what it will mean for local residents to live near the NAC during its construction and when it is in use. You are invited to take part in a two-step public consultation process consisting of information evenings and input session.

More details on the project

September 2022 – Note to readers

These documents have been made public in the interest of transparency and so that those who participated in the fall 2020 public consultation can see the outcome of their involvement.

However, given the revised planning for the NAC project, the adoption of new urban planning regulations is no longer being considered for the short term. If the scope of the project were to change, some aspects of the present documents may become obsolete, and we would no longer be able to adopt new urban planning regulations based on what was presented in the fall of 2020.

Rest assured that other forums for community engagement will be held in due time.

The NAC project team

The Commission’s report - French only

The STM’s action plan - French only

Opportunities for community to learn more about the project and its timeline.

  • Information session: November 2, 2020, 7 p.m.

Presentation virtual information session

Consult the accessibility page for more info on the external medias.

See Virtual information session on YouTube

  • Answers to your questions: November 10, 2020, 7 p.m.
Consult the accessibility page for more info on the external medias.

See on YouTube

Opportunitie for community members to share expectations and suggestions about the project.

Consult the accessibility page for more info on the external medias.

See on YouTube


Between November 2 to 24, 2020, there are six ways you can give your input on the project:

1. Guided survey

You can fill out our five-question survey on the consultation’s main concern: what it will mean for local residents to live near the NAC during its construction and when it is in use.


2. Written statement only

You can send your written statement by email or mail it to the address below by Tuesday, November 24, 2020.

Public consultation – NAC
Corporate Secretary
800 De La Gauchetière Street West
Main floor, Suite 1170
Montréal, Québec
H5A 1J6

3. Verbal statement only

You can sign up for the virtual input session without sending in a written statement. However, the registration period for this event is now closed.


4. Written statement presented during the input session

You can send us your written statement at least three business days before the input session, by November 19, 2020. You can email it or mail it to the address above.

However, the registration period for this event is now closed.

5. Pre-recorded video

You can record a short video (no more than 10 minutes) giving us your input. You may include a presentation or written document with your video. Send your video and any accompanying document by email by November 24, 2020.


6. Call in

You can call us at 514-STM-INFO + option 8 + option 6 + option 1 (514 786-4636 + 8 + 6 + 1) by November 24, 2020, to share your input. An STM agent will compile your statements into a written document.

Need help?

There will be no in-person input session. If none of the above options are possible for you, please call 514-STM-INFO + option 8 + option 6 + option 1 (514 786-4636 + 8 + 6 + 1), so that we can find an alternative solution for you.

To carry out NAC project, the STM must obtain a by-law from the City of Montréal’s Agglomeration Council. This by-law enacts the urban planning rules that the STM must follow when performing the work for the project.

To obtain the by-law, the STM must first hold a public consultation in accordance with its corporate policy entitled Politique de consultation publique – réseau du métro (PC 1.14).

  1. Our board of Directors is initiating the consultation process by creating a Commission.  
  2. The commission is made up of a chairperson and two commissioners from outside the STM who are mandated by the Board.
  3. Citizens are informed through various communication channels, such as the STM’s website, newspapers, signage at worksites and invitations delivered to residents’ mailboxes.
  4. The commission involves:
    1. An information session where the project is presented, followed by a question period
    2. An input session
  5. After the consultation, the commissioners submit their report to the STM along with their recommendations. The commission’s work is complete once the report is submitted. 

Marguerite Bourgeois, Commission Chair

 Marguerite Bourgeois graduated from McGill University in science and law and has worked in the industrial, services and manufacturing sectors for private and public companies including Alcan, Loto-Québec, Fonorola and IPEX. She has a strong background in legal and corporate affairs leadership, strategic planning, project management and start-ups on both a national and international scale. She has put this diverse professional background to use as ad hoc commissioner of the Office de consultation publique de Montréal and at the STM.

Ms. Bourgeois has always paired her professional activity with social engagement, whether as a Centraide committee member, as president of the Duke of Edinburgh’s Award, Quebec Division, as a member of the Association of Volunteer Guides at the Montreal Museum of Fine Arts, or as part of other paraprofessional and community groups.

Ms. Bourgeois successfully completes her mandates with the help of her people- and results-oriented approach, organization, and negotiation skills.

David Hanna, Commissioner

David Hanna retired in 2016 but remains active as an adjunct professor of urban planning with the Department of Urban and Tourism Studies at UQAM. He holds a doctorate in economics from McGill University. As an expert in urban transportation and heritage, he has acquired many years of experience in public consultation, including leading several mandates for the City of Montréal’s advisory committee for the protection of cultural property from 1991 to 2003. He was also President of the Québec Religious Heritage Council from 1996 to 2004. His numerous academic publications and contributions to scientific conferences throughout his career speak to the broad, sharp vision he has cultivated for the socioeconomic, architectural and heritage issues at the heart of city life.

Martine Musau, Commissioner

Martine Musau has a professional background perfectly suited to the needs of the Commission. She has served in municipal administration as Director of Legal Affairs and Court Clerk for the towns of Amqui and Kirkland, positions that she held between 2012 and 2019, and currently practises municipal law. Her experience has given her an excellent grasp of the challenges that municipal decision-makers face. Specifically, she has supervised the overhaul of a related town’s urban planning regulations, contributed to the creation of transparent, effective public consultation frameworks, and developed strategies for local governments dealing with issues surrounding urban planning and development, contractual management and ethics. She has also led training sessions for elected officials and municipal executives.

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