> Scarborough Junction Grade Separation - Studies, Impacts, and Mitigation - Public Information Centre #2 | Metrolinx Engage

Studies, Impacts, and Mitigation

Scarborough Junction Grade Separation - Studies, Impacts, and Mitigation - Public Information Centre #2

Environmental studies are important components of a TPAP. Along with public feedback, they inform the Draft Environmental Project Report (EPR) that becomes subject for public review and the Minister’s approval.


These studies look at existing conditions to assess potential impacts from construction and operation of the proposed infrastructure and future train service, recommend mitigation measures/monitoring commitments, and provide key information for concept designs.

Updates from Round 2

In Round 2 of consultation, we presented information about the associated impacts and proposed mitigation for each of the previously presented grade separations.

Click here to read the highlights from the preliminary EPR and proposed mitigation measures.

The full study reports can be viewed here.

These environmental studies completed or underway for the Project include:

Operational Air Quality and Operational Noise and Vibration studies are being undertaken as part of a separate process. Please visit the GO Rail Network Electrification Addendum project website for more information.

Commitments and Future Work

Following the TPAP phase the proposed Infrastructure will move into detailed design and construction phases.  During these phases all applicable regulations, permits, approvals and best practices will be adhered to.  A few of the key preliminary commitments include:

  • A range of municipal permits and approvals may be required for the Project, particularly as pertaining to municipally owned lands and infrastructure. Metrolinx will obtain all required permits and approvals. However, Metrolinx as a Crown Agency of the Province of Ontario is exempt from certain municipal processes and requirements.
  • In these instances, Metrolinx will continue to engage with the municipalities to incorporate municipal requirements as a best practice, where practical, and may obtain associated permits and approvals.  
  • Metrolinx will continue to communicate and engage with impacted municipalities, utilities and services, and property owners throughout detailed design and prior to construction, where necessary.
  • An Environmental Mitigation and Monitoring Plan will be developed and adhered to during construction.
  • Surrounding property owners and tenant will be informed of anticipated upcoming construction.