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Ontario Line

A new 15.6-km subway line in Toronto that will run from Exhibition Place, through downtown, all the way to the Ontario Science Centre.

East Harbour Early Works Report

Published on Nov. 17, 2021

Early construction activities at the site of the future East Harbour Station will lay the groundwork for other major construction on the Ontario Line and GO Expansion projects, reducing risk of future construction delays.

The East Harbour Station Early Works Report outlines the purpose of early works, a description of local environmental conditions, potential impacts, proposed mitigation measures and a record of consultation. The report also builds on previously completed environmental assessment work in the area, including the East Harbour Station SmartTrack Station Environmental Project Report (2018).

Read the full East Harbour Early Works Report

Read the Statement of Completion

Read the Notice of Final Publication

Read Appendix B1 – Project Distribution List

Read Appendix B2 – Project Webpage

Read Appendix B3 – Consultation and Correspondence Record

Read Appendix C – LSE-JC N&V Operations Report

Read Appendix D – East Harbour Station Rendering

Potential effects and mitigation measures

Potential effects

  • Removal of/damage to trees, terrestrial vegetation and wildlife habitat.
  • Erosion and/or sedimentation-related impacts to vegetation communities as a result of construction.
  • Disturbance or displacement of wildlife species and reduced habitat connectivity.
  • Risk of contamination to soil or waterbodies as a result of spills.
  • Introduction or spread of invasive species.

Mitigation measures

  • Identify opportunities to promote pollinator species and habitat in accordance with the Metrolinx Vegetation Guideline (2020) (e.g., this may include planting or seeding native flowering plants in temporarily disturbed areas).
  • Tree and vegetation removals will be kept to a minimum and limited to within construction areas.
  • Tree and vegetation removal compensation will be provided in accordance with the Metrolinx Vegetation Guideline (2020).
  • Temporarily disturbed areas will be restored/re-vegetated.
  • Erosion and sediment control measures will be installed prior to construction commencement.
  • Prior to early works activities, species-specific surveys will be completed as required to avoid or reduce potential impacts to bat Species at Risk and meet all Species at Risk regulatory requirements.

Read more - Appendix A1 – Natural Environment Report

Land Acknowledgement

Metrolinx acknowledges that it operates on the traditional territory of Indigenous Peoples including the Anishnabeg, the Haudenosaunee and the Wendat peoples. In particular these lands are covered by 20 Treaties, and we have a responsibility to recognize and value the rights of Indigenous Nations and Peoples and conduct business in a manner that is built on the foundation of trust, respect and collaboration. Metrolinx is committed to building meaningful relationships with Indigenous Peoples, and to working towards meaningful reconciliation with the original caretakers of this land.