> Archaeology – Yonge North Subway Extension | Metrolinx Engage

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Archaeology – Yonge North Subway Extension

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Key Findings

  • Most of the Study Area does not retain archaeological potential.
  • Areas that retain archaeological potential include a portion of Hendon Park, north of Hendon Avenue; a parking lot located at the southeast corner of Yonge Street and Newton Drive; sections of grassed areas associated with residential properties south of Steeles Avenue East and east of Yonge Street; sections of grassed areas at 7994 and 8000 Yonge Street; and the section of Royal Orchard Park between Bay Thorn Drive and Thorny Brae Drive.
  • Where archaeological potential is present and disturbance is anticipated, further archaeological assessment(s) will be completed prior to construction. The assessment(s) may include test pit surveys and deeply buried investigative techniques, such as mechanical topsoil removal, mechanical trenching, and, if required, construction monitoring.

map of the stage 1 Archaeological Assessment Results

Figure 1: Stage 1 Archaeological Assessment Results

Potential Effects & Mitigation Measures

Potential Effects:

Construction Phase

  • Potential for disturbance of shallow and deeply buried archaeological resources due to Project construction activities.

Operational Phase

  • No impacts to archaeological resources are anticipated during Project operations.

Mitigation Measures:

Construction Phase

  • Complete additional archaeological assessment(s) where required as early as possible and in advance of any ground disturbance. Indigenous Community Field Liaisons will be invited to participate in this work and archaeological assessment report(s) will be circulated to Indigenous Nations for review.
  • If archaeological materials are encountered (or suspected) during construction activities, all work will stop. The site will be protected from impact and additional assessment will be undertaken.

Operational Phase

  • No impacts to archaeological resources are anticipated during Project operations, therefore no mitigation is required.

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Submissions are closed.