Annacis Island Wastewater Treatment Plant Expansion

Rank 2022


Image Credit: Metro Vancouver

Industry Sector: Water

Project Type: Water Wastewater

Project Value: $1.27 billion

Funding Source: Public

Province: British Columbia

City / Region: Delta

Estimated End Date of Substantial Completion: 2027

The Annacis Island Wastewater Treatment Plant currently serves 1.25 million people in 14 Metro Vancouver municipalities, and once the Stage 5 project is complete, it will serve 1.5 million people. The previous expansion, Stage 4, was done in the late 1990s. The $184 million contract for the outfall pipeline was awarded in September 2019. The outfall pipe will be excavated using a tunnel boring machine. The Annacis Island facility currently treats wastewater using primary and secondary treatment technologies. An expanded facility will ensure that the plant can manage a higher volume of wastewater, continue to keep odour to a minimum and will continue to operate in the event of a major earthquake. There are over 20 projects planned as part of the on-site improvements of the Annacis Island Wastewater Treatment Plant. Improvement projects include: new trickling filters; Secondary clarifiers; and A co-generation facility to make better use of green energy captured on site.

Project Owner: Metro Vancouver

Engineer: Brown and Caldwell, Stantec, EIC Solutions, Klohn Crippen Berger (stage 5 expansion); CDM Smith, Golder (a member of WSP), McMillen Jacobs (outfall); Wood/Black & Veatch (cogeneration backup power); EXP (geotechnical eng. & monitoring/instrumentation)

Project/Construction Manager: Hatch (outfall project); CDM Smith (Overall Construction Coordination)

P3 Team Members/Project Team: JJM Construction and Geopac Inc. (Phase 1 ground improvement and 12.5 kV power feed relocation); Graham/AECON Joint Venture (Phase 1 treatment plant process structures and equipment); North American Construction (blowers contract); Kenaidan Contracting (computer control system and laboratory building, cogeneration and backup power); Maple Reinders Inc (Phase 2 Gravity Thickeners and Aeration Tanks Retrofit); Bennett Mechanical Installations (Phase 2 Digester Heat Exchangers Upgrade); Pomerleau-Bessac General Partnership (outfall pipeline)

Other Key Players: AECOM (Stage 5 Phase 1 Design review); WSP (3rd Party materials engineering and testing); Hatch (tunnel design review and outfall construction management); HKA (claims support); Colliers Project Leaders; Jacobs; CDM Smith; Associated Engineering (project management and construction mg staff augmentation); Envirowmt.est (environmental)

Legal: Norton Rose Fulbright (for Metro Vancouver)

2022 Rank: 55

2021 Rank: 81

2020 Rank: 82

2019 Rank: 83

2018 Rank: 83

2017 Rank: 80

2016 Rank: 83


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