Air Quality - Yonge North Subway Extension
Review the air quality study key findings and potential impacts and mitigation measures.
By its nature, providing reliable, safe and accessible public transportation brings environmental and social benefits. Metrolinx is committed to the preservation and protection of the environment, while working to provide an integrated and sustainable transportation system.
To maintain strong environmental oversight, Metrolinx has prepared an addendum to the previously-completed 2009 Environmental Project Report (EPR) and 2014 EPR Addendum – which includes studying existing environmental conditions and completing an environmental impact assessment.
Metrolinx released the EPR Addendum for the Yonge North Subway Extension Project for public review from February 10, 2022 to March 14, 2022. In accordance with O. Reg. 231/08, Metrolinx has updated the EPR Addendum following the public review period and published the Updated EPR Addendum on April 14, 2022. This report includes a final description of the Yonge North Subway Extension project, and an assessment of environmental impacts, mitigation measures, monitoring activities, potentially required permits and approvals, and other components as outlined in O.Reg 231/08.
The sections below describe the different environmental components that have been studied throughout the Yonge North Subway Extension project area and the impact assessment reports that we will use to share those findings.
Since the completion of the 2009 EPR and 2014 EPR Addendum, additional changes to the Project have been made, necessitating an update to the existing environmental assessment.
In accordance with Section 15 of O. Reg. 231/08, an EPR Addendum is required to:
In accordance to Section 16 of O.Reg. 231/08, given the lapse of time since the completion of the EPR in 2009, the current EPR Addendum also entails a detailed review of:
Changes to the Project that are assessed in this 2022 EPR Addendum compared to the 2009 EPR and 2014 EPR Addendum include:
The public review and comment period for the Environmental Project Report Addendum closed on March 14, 2022.
Metrolinx established an issues resolution process to attempt to resolve any concerns raised by the public or Indigenous Nations during the EPR Addendum review period.
Following the review period, Metrolinx updated the EPR Addendum by adding a description of the issues resolution process, what Metrolinx did to address any concerns, and if the Project timeline will be impacted as a result of addressing concerns.
Metrolinx published the updated EPR Addendum on the project webpage: https://www.metrolinxengage.com/en/content/full-report-environmental-pro... and issued a Notice of Updated EPR Addendum on April 14, 2022.
The updated environmental studies are building off the work previously done on the Yonge North Subway Extension, including:
Review the air quality study key findings and potential impacts and mitigation measures.
Review the archaeology study key findings and potential impacts and mitigation measures.
Review the built heritage resources & cultural heritage landscapes study key findings and potential impacts and mitigation measures and leave your comments.
Review the natural environment study key findings and potential impacts and mitigation measures.
Review the noise and vibration study key findings and potential impacts and mitigation measures and leave your comments.
Review the socio-economic & land use characteristics study key findings and potential impacts and mitigation measures and leave your comments.
Review the soil & groundwater study key findings and potential impacts and mitigation measures.
Review the traffic & transportation study key findings and potential impacts and mitigation measures.
Read the full Environmental Project Report Addendum.