Notice of Commencement of Transit Project Assessment Process Trillium Line Extension

Notice of Commencement of Transit Project Assessment Process Trillium Line Extension

The Project

Trillium Line Extension - mapThe City of Ottawa is developing a plan to extend and expand the City’s existing diesel-powered O-Train Trillium Line service from Greenboro Station to Riverside South (Bowesville Road) and to the Ottawa Macdonald-Cartier International Airport.

The plan will include options to service the growing communities of Riverside South and Leitrim, the Airport and adjacent lands, new stations at Gladstone Avenue and Walkley Road and a relocated station at Confederation Heights on the existing Trillium Line. The plan also allows for future conversion to electric light rail transit (LRT) technology.

The Process

The planning efforts have been completed and the City is now formalizing the environmental assessment component in accordance with the Transit Project Assessment Process (TPAP) as prescribed in Ontario Regulation 231/08. As part of the TPAP, an Environmental Project Report (EPR) will be prepared to document the entire study process, a description of the planned project, its anticipated environmental impacts, as well as the project’s consultation program.


Members of the public are invited to review the work completed to-date, including previous consultation efforts and reports presented to City Council on this project during the planning phase. Information is available on the City’s website at, Comments can be forwarded to the City between September 24, 2015 (date of first TPAP notice) and October 31, 2015. In early 2016, the draft EPR will be made available for public review and notification will be issued.

If you would like to be added to our project mailing list, or have questions or comments about this project, please contact:

Frank R. McKinney, P.Eng.
Program Manager, Transportation Planning – Environmental Assessments Unit
City of Ottawa
110 Laurier Avenue West, 4th Floor
Ottawa ON K1P 1J1
Tel: 613-580-2424 ext. 28540
Fax: 613-580-2578

Under the Freedom of Information and Protection of Privacy Act and the Environmental Assessment Act, unless otherwise stated in the submission, any personal information such as name, address, telephone number and property location included in a submission will become part of the public record files for this matter and will be released, if requested, to any person.

Notice first published on September 24, 2015


Further information on the Trillium Line Expansion can be found HERE.