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Lakeshore East Corridor

Electrification Infrastructure

 

  • Approximately 48 km of electrified corridor
  • OneTraction Power Substations
    • East Rail Maintenance Facility TPS
  • Two Switching Station
    • Scarborough SWS
    • Durham SWS
  • One Paralleling Station
    • Don Yard PS
  • Based on initial bridge inventory work:
    • Total of 20 overhead bridges
    • 1 bridge with a vertical clearance constraint
    • All overhead bridges will require bridge barriers for safety

Recommended Traction Power Facilities

Scarborough TPS & Scarborough SWS

(Two TPFS required as a pair for power supply and distribution along the Stouffville and Lakeshore East Corridors)

Map of Scarborough Traction Power Substation and Scarborough Switching Station Site

Scarborough TPS (Located on Stouffville corridor)

The TPS will step down the voltage from 230kV to 55kV.

Advantages:

  • Accommodates approximate facility dimension requirements
  • Aerial connection from existing Hydro One transmission line, where the power will be stepped down from 230kV to 55kV
  • The 55kV connection route reduces the height/visual effects of the infrastructure on top of the OCS along the Stouffville corridor – a SWS and a TPS working together are required to achieve this
  • No anticipated environmental issues; further work to be completed as part of the impact assessment phase
  • No anticipated cultural heritage issues; further work to be completed as part of the impact assessment phase

Disadvantages:

  • Site is not owned by Metrolinx
  • Further consultation/coordination with the City of Toronto will be undertaken as required to ensure coordination with other planned projects (e.g., Eglinton Crosstown LRT)

Scarborough SWS (Located on Lakeshore East corridor)

The Scarborough SWS facility will be connected to the OCS along the corridor.

Advantages:

  • Accommodates approximate facility dimension requirements
  • The 55kV connection route reduces the height/visual effects of the infrastructure on top of the OCS along the Lakeshore East corridor – a SWS and a TPS working together are required to achieve this
  • No anticipated environmental issues; further work to be completed as part of the impact assessment phase
  • No anticipated cultural heritage issues; further work to be completed as part of the impact assessment phase
  • Site is owned by Metrolinx and is directly adjacent to the rail corridor

Disadvantages:

  • Parcel is adjacent to an apartment neighbourhood and a City park, and in the vicinity of the rear yards of a single family residential street. In the future, the lands to the southeast of the rail corridor are to be redeveloped as a residential neighbourhood. Placement of the TPF on the site would need to be sensitive to these adjacent uses and further consultation with the City of Toronto is required to ensure appropriate mitigation

East Rail Maintenance Facility (ERMF) TPS

Map of East Rail Maintenance Facility Traction Power Substation Site

Advantages:

  • Accommodates approximate facility dimension requirements; satisfies site configuration requirement
  • There is existing road access
  • Aerial connection from existing Hydro One transmission line
  • The site is owned by Metrolinx and the TPS will be accommodated within the plans for the ERMF on the same site
  • No environmental concerns
  • No land use concerns
  • Non-Heritage Property

Disadvantages:

  • None identified

Durham SWS

Map of Durham Switching Station Site

Advantages:

  • Accommodates approximate facility dimension requirements; satisfies site configuration requirement
  • There is existing road access
  • Present road access, new easement through Brock Road to be created
  • No known/active development applications on the site
  • The site avoids the nearby Provincially Significant Wetland; minor vegetation effects can be mitigated
  • The site is not in the vicinity of any residential areas or sensitive receptors. The site is currently open space, with vegetation cover. Land use is designated as Freeways and Major Utilities - Potential Multi-Use Areas.
  • Low potential for built heritage resources and cultural heritage landscapes within or immediately adjacent to the facility location; further work to be completed as part of the impact assessment phase

Disadvantages:

  • Site is not owned by Metrolinx
  • Potential Species at Risk habitat warrants further field investigation and mitigation will be developed if required

Don Yard PS

Map of Don Yard Paralleling Station Site

Advantages:

  • Accommodates approximate facility dimension requirements; satisfies site configuration requirement
  • No known/active development applications on the site
  • No anticipated environmental effects, however further work to be completed as part of the impact assessment phase
  • Low potential for built heritage resources and cultural heritage landscapes; further work to be completed as part of the impact assessment phase
  • Site is owned by Metrolinx

Disadvantages:

  • There are many competing interests and development plans in this area which significantly constrain the availability of property for siting the PS facility, including: 
    • Don Mouth Naturalization and Port Lands Flood Protection
    • Gardiner Expressway East Reconfiguration
    • Unilever development (east of the Don River)
    • Broadview Avenue Planning Study
    • GO Station Planning Study
  • New road access will likely be required
  • Further assessment and consultation with City of Toronto, Waterfront Toronto, Toronto and Region Conservation Authority and others will be required in order to confirm a viable location for the paralleling station facility as part of the TPAP
Submissions are closed.