Trans Mountain Pipeline ULC - Trans Mountain Expansion

The Trans Mountain Expansion Project (TMX) is a proposal to expand the existing Trans Mountain pipeline system between Edmonton, AB and Burnaby, BC. It would include approximately 987 km of new pipeline, new and modified facilities, such as pump stations and tanks, and the reactivation of 193 km of existing pipeline. The Westridge Marine Terminal would also be expanded.

New pipeline segments would be added between Edmonton and Hinton, AB, Hargreaves, BC and Darfield, BC and Black Pines, BC and Burnaby, BC.

Some existing, but currently deactivated pipeline segments between Hinton, AB and Hargreaves, BC and Darfield and Black Pines, BC would be reactivated.

What's New

  • 2015-04-13
    Between August 2014 and January 2015 the NEB heard oral Aboriginal traditional evidence from 35 Aboriginal Intervenors in Edmonton, Calgary, Kamloops, Chilliwack and Victoria related to the Trans Mountain Pipeline Project. Audio recordings of the oral Aboriginal traditional evidence are now available online and can be streamed or downloaded until 29 February 2016 at

    These recordings are being made available as a result of a letter filed on 8 December 2014 by Mr. Adam Olsen, requesting the Board to find some way to make the Project’s oral traditional evidence audio recordings available to the public at no cost. The Board granted the request, and more information can be found in [Filing A69457]
  • Board-approved intervenors’ next deadline is Evidence filing due 27 May 2015.
  • Board-approved commenters’ deadline to file comments is now 23 July 2015.

Project Map

Proposed Trans Mountain Pipeline Expansion Project Configuration Map

This map provides an overview of the proposed Trans Mountain Pipeline Expansion Project.

Trans Mountain has developed an interactive map which shows both the existing and proposed pipeline corridors and allows you to zoom in to the area that interests you. You can find this map on their website.

Email Updates

The NEB releases periodic email updates to keep you informed of the latest developments in the hearing.

You can sign up to receive email updates about the Trans Mountain Expansion Project hearing process here:

List of Issues

The Board has decided on a list of 12 issues it will consider during the hearing process.

  1. The need for the proposed project.
  2. The economic feasibility of the proposed project.
  3. The potential commercial impacts of the proposed project.
  4. The potential environmental and socio-economic effects of the proposed project, including any cumulative environmental effects that are likely to result from the project, including those required to be considered by the NEB's Filing Manual.
  5. The potential environmental and socio-economic effects of marine shipping activities that would result from the proposed Project, including the potential effects of accidents or malfunctions that may occur.
  6. The appropriateness of the general route and land requirements for the proposed project.
  7. The suitability of the design of the proposed project.
  8. The terms and conditions to be included in any approval the Board may issue.
  9. Potential impacts of the project on Aboriginal interests.
  10. Potential impacts of the project on landowners and land use.
  11. Contingency planning for spills, accidents or malfunctions, during construction and operation of the project.
  12. Safety and security during construction of the proposed project and operation of the project, including emergency response planning and third-party damage prevention.

The Board does not intend to consider the environmental and socio-economic effects associated with upstream activities, the development of oil sands, or the downstream use of the oil transported by the pipeline.

Hearing Documents

During the National Energy Board's review of this project, all evidence, letters of comment, Board decisions and other relevant documents must be filed with the National Energy Board and placed on the Board's online document repository. These documents are all accessible to the public. You can find these documents here [Folder 2392873].

  • Click here for Hearing Order OH-001-2014 [Filing A59503]
  • For the most recent Hearing Schedule information please refer to the Hearing Schedule [Folder 2692778] in the online document repository.

Training & Presentations

Board-approved Intervenors

General guidance on preparing your evidence and argument can be found in the PowerPoint presentation "Intervenor Workshop, Part 1 - Written Submissions"

More specific guidance on preparing your evidence can be found in Procedural Direction 7 [Filing A64513].

More specific guidance on preparing your argument will be provided in due course.

Board-approved Commenters

The deadline for submitting comments is now 23 July 2015.

Commenters will receive guidance on preparing your comments from the Board’s Process Advisor by email.


For media inquiries, please contact:

Media Line (toll free): 1-800-899-1265 ext. 3

News Releases

Frequently Asked Questions

Contact Trans Mountain Pipelines

If you have questions about the project, including whether or not the pipeline could cross your property, please contact Trans Mountain Pipelines at 1-866-514-6700 or via email at

Trans Mountain:
Kinder Morgan Canada:

Contact Us

The NEB releases periodic email updates to keep you informed of the latest developments in the hearing. You can sign up to receive these email updates here:

For questions about the NEB's hearing process, please contact:

Reny Chakkalakal
Process Advisor

National Energy Board
Telephone (toll free): 1-800-899-1265
Facsimile: 403-292-5503
Facsimile (toll free): 1-877-288-8803
TTY (Teletype): 1-800-632-1663

For media inquiries, please contact:

Tara O'Donovan
Communications Officer


Media Line (toll free): 1-800-899-1265 ext. 3