Annacis Island Wastewater Treatment Plant Expansion

Rank 2025

46 Image Credit: Metro Vancouver

Industry Sector: Other

Project Type: Water Wastewater

Project Value: $2 billion

Funding Source: Public

Province: British Columbia

City / Region: Delta

Estimated End Date of Substantial Completion: 2032

There are over 20 projects planned as part of the onsite improvements of the Annacis Island Wastewater Treatment Plant. Key improvement projects include new trickling filters, secondary clarifiers, and a co-generation facility to make better use of green energy captured on site. Detailed design of the remaining Phase 2 Final Works is underway with construction anticipated to commence in 2026. A new digester and biosolids dryer have been added to the expansion program.

Project Owner: Metro Vancouver

Engineer: Brown and Caldwell, Klohn Crippen Berger, CDM Smith, WSP (Stage 5 expansion); CDM Smith, WSP (materials engineering and testing); Golder (WSP) (outfall); Wood (WSP) (consulting engineer/geotechnical studies & materials tester); McMillen Jacobs, Arup (design architect); EXP (geotechnical); Hatch (tunnel design review and outfall construction management); Colliers Project Leaders; Jacobs; CDM Smith; Associated Engineering (project and construction management/staff augmentation); Envirowest (environmental); McElhanney (consulting); Victaulic (supplier); E.S. Fox

Contractor: Phase 1 Substantially Complete; 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); Graham

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

Other Key Players: AECOM (Stage 5 Phase 1 Design review); WSP (materials engineering & testing); Arup (design architect); Wood E&I (WSP) (consulting engineer/geotechnical studies & materials tester); Hatch (tunnel design review and outfall construction management); Colliers Project Leaders; Jacobs; CDM Smith; Associated Engineering (project and construction management/staff augmentation); Envirowest (environmental); McElhanney; Victaulic (supplier)

Legal: Norton Rose Fulbright (for Metro Vancouver)

2024 Rank: 45

2023 Rank: 54

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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