Second Narrows Water Supply Tunnel - Cathodic Protection

The proposed project 

Metro Vancouver is planning to install a cathodic protection system for the protection of Second Narrows Water Supply Pipelines. The project includes the installation of the cathodic system, which requires:  

  • Trenching a teck cable upland (outside port authority jurisdiction) and laying approximately ten metres of teck cable on the sea floor (within port authority jurisdiction) 
  • Installing an anode bed array, consisting of four tubular mixed metal oxide anode assemblies. 
  • Connecting the teck cable to the anode array bed 
  • Installing anchor chains to secure the anode array bed 

The project is anticipated to be completed by January 2023. 


Latest update

Notice of Determination 

North Vancouver, B.C. – December 2, 2022 – The Vancouver Fraser Port Authority has determined that the proposed Second Narrows Water Supply Tunnel - Cathodic Protection located at approximately 450 metres east of Second Narrows Bridge on the North Shore of Burrard Inlet is not likely to cause significant adverse environmental effects.


Key documents

Key documents
Document Number Document Title File Date
2 Notice of Determination - December 2, 2022
1 Second Narrows Water Supply Tunnel - Cathodic Protection - Public comments invited - October 21, 2022


Project and Environmental Review
Vancouver Fraser Port Authority
100 The Pointe, 999 Canada Place
Vancouver, British Columbia V6C 3T4

  • Location

    • Second Narrows Water Supply Tunnel - Cathodic Protection (British Columbia)
  • Nature of Activity

    • Ports and Harbours
  • Assessment Status

  • Start Date

  • Proponent

    Metro Vancouver
  • Authorities

    • Vancouver Fraser Port Authority
  • 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: