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Stouffville Rail Corridor Grade Separations

Stouffville Rail Corridor Grade Separations - Studies, Impacts, and Mitigation

Environmental Studies

Environmental studies are important components of a TPAP. Along with public feedback, these studies inform the 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.

Read the EPR and technical reports.

Metrolinx has undertaken a regional air quality study to assess the operational impacts of the GO Expansion services. The operational air quality effects of electrified GO Trains along the Stouffville Rail Corridor have been assessed at the regional scale as the future service will be (mostly) electrified, and as a result the corridor will experience reduced local air contaminant concentrations from operations. The results of this study are documented in a separate report as part of the GO Rail Network Electrification Addendum. Please visit the GO Rail Network Electrification Addendum project website for more information.

An operational Noise and Vibration study for the Stouffville Rail Corridor is also being undertaken as part the GO Rail Network Electrification Addendum, please visit the 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 tenants will be informed of anticipated upcoming construction.