Y Jetty Substation Code Upgrade at Signal Hill - Canadian Forces Base (CFB) Esquimalt

The Department of National Defence (DND) has proposed a project. The existing installation at Yarrows Substation has been in place since the 1990s. In order to mitigate existing cabling and loading issues, upgrades to the system are required. The existing 45kVA transformer within the substation enclosure will be removed and replaced with a 112.5kVA transformer. The existing 200 amp panel will be replaced with a larger 400 amp panel to accommodate the additional capacity. New wiring will be provided through underground conduits to support the two new power kiosks, as well as the two existing hazmat containers and the washroom trailer. The hazmat containers will also have additional, dedicated ground connections provided, which will go back to the substation. Finally, an arc flash hazard assessment will be completed as part of the final construction process.

Latest update

May 6, 2022 – The public comment period on the project is closed. The Department of National Defence is considering comments received to help inform its determination on whether the carrying out of the project is likely to cause significant adverse environmental effects.


Key documents

Key documents
Document Number Document Title File Date
1 Public Comment Period on Intent to Make a Determination - April 26, 2022


Becky MacInnis
Department of National Defence
Becky MacInnis, Environment Officer / MARPAC Formation Safety and Environment
Formation Safety and Environment, Canadian Forces Base Esquimalt
PO Box 17000 Stn Forces
Victoria, British Columbia V9A 7N2
Email: Rebecca.MacInnis@forces.gc.ca

  • Location

    • Canadian Forces Base (CFB) Esquimalt (British Columbia)
  • Nature of Activity

    • Building and Property Development
  • Assessment Status

    In progress
  • Start Date

  • Proponent

    Department of National Defence
  • Authorities

    • Department of National Defence
  • Assessment Type

    Project on federal lands
  • Reference Number


This map is for illustrative purposes. The markers represent the approximate locations based on available data. More than one marker may be identified for a given assessment.


Nearby assessments

...within 200 kilometres
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