Metro Vancouver Annacis Main 3 Scour Protection project

Metro Vancouver is proposing to place scour protection consisting of a blended rock riprap apron around the Metro Vancouver Annacis Main #3 sanitary line to prevent erosion. Annacis Main #3 crosses the Annieville Channel on the south arm of the Fraser River between Annacis Island and Surrey, BC.  

The proposed apron will be approximately one metre thick and is comprised of two portions (east and west) both tying into one side of riprap placed in 2014. The west portion will upgrade and extend riprap placed in 1995. The east portion will extend the length of the apron toward the east bank. The surface area of the combined apron is approximately 11,523 square metres with an estimated quantity of blended apron material is approximately 9,510 cubic metres.  

Project works will consist of limited excavation of the Annacis Main #3 and placement of blended rock on the riverbed from a barge using an excavator equipped with a clamshell bucket. The project will require approximately 21 days to complete and is proposed to occur in January to February, 2023. 


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.


Latest update

End of public comment period 

The public comment period on the project is closed. The Vancouver Fraser Port Authority 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 Metro Vancouver Annacis Main 3 Scour Protection project - August 2, 2022

List all records


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

  • Location

    • Metro Vancouver Annacis Main 3 Scour Protection projec (British Columbia)
  • Nature of Activity

    • Ports and Harbours
    • Other, not otherwise specified
  • Assessment Status

    In progress
  • Start Date

  • Proponent

    Metro Vancouver
  • Authorities

    • Vancouver Fraser Port Authority
  • Assessment Type

    Project on federal lands
  • Reference Number


Nearby assessments

..within 200 kilometres
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