Colwood Fuel Oil Depot - Air Scrubber

The Colwood Fuel Oil Depot (FOD) holds, and in some cases treats, composition water and oily waste from Canadian Forces Base Esquimalt Dockyard operations. This oily waste is stored in large holding tanks, which currently off-gas to the atmosphere. The off-gas from the tanks contains hydrogen sulfide which poses a safety risk to the operators. The objective of this project is to vent Tanks 8, 9, 12, as well as oily water separators COW 1 and 2 to an air scrubber to remove the hydrogen sulfide risk.

The new venting system will be mounted to existing rails / pipe racks where possible, however there will be a requirement for additional pipe racks or stands along the vent run. The vent run will begin on top of Tanks 8, 9, and 12, as well as COW 1 and COW 2, and all feeder vents will converge to a single vent pipe, which will run to the pad mounted air scrubber. The air scrubber will be located south of the Electrical Building inside the compound. The existing surface is asphalt, which will need to be removed for a concrete pad to be installed. The electrical components for the air scrubber will be run from the adjacent electrical building, via existing cable tray where possible; additional cable tray will be required in areas where not available.

All surfaces inside the compound are gravel, concrete, or asphalt. There is no vegetation within the project area.


Latest update

December 21, 2021— The Department of National Defence issued its Notice of Determination and determined that the project is not likely to cause significant adverse environmental effects.



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

  • Location

    • Colwood Fuel Oil Depot, Rosebank Road, Colwood (British Columbia)
  • Nature of Activity

    • Building and Property Development
  • Assessment Status

  • Start Date

  • Proponent

    Public Comment Period on Intent to Make a Determination
  • 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
Date modified: