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. 


Latest update

Notice of Determination 

Surrey, B.C. –October 18, 2022– The Vancouver Fraser Port Authority has determined that the proposed Metro Vancouver Annacis Main 3 Scour Protection Project located at the south arm of the Fraser River at the northern end of Annacis Island, Surrey, BC is not likely to cause significant adverse environmental effects.


Key documents

Key documents
Document Number Document Title File Date
2 Notice of Determination - October 18, 2022
1 Metro Vancouver Annacis Main 3 Scour Protection project - August 2, 2022


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

  • 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
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