Bonnybrook Wastewater Treatment Plant D Expansion

Rank 2021


Image Credit: City of Calgary

Industry Sector: Water

Project Type: Water Wastewater

Project Value: $600 million

Funding Source: Public

Municipal Funding: $600 million

Province: Alberta

City / Region: Calgary

Estimated End Date of Substantial Completion: 2024

One of Calgary’s three wastewater treatment plants, Bonnybrook is undergoing an expansion with the plant estimated to be able to service an additional equivalent population of 325,000 people. When construction is completed in 2024, the facility will service a population of 1.366 million people.

The Plant D expansion is the largest project of the overall upgrade and includes new primary and secondary clarifiers, new bioreactors with biological nutrient removal system, new treated effluent filtration facility, new Thermal Hydrolysis Process facility, and a new flood berm. The City is also upgrading the existing ultraviolet disinfection system, digesters, and primary sludge thickening systems.

Three significant construction projects got underway in 2019: the primary treatment expansion, new biogas storage facility, and the cogeneeration facility expansion. Work was also done on the emergency outfall channel.

Project Owner: City of Calgary

Engineer: Stantec (local); Jacobs; AECOM; Wood Group (consulting)

Project/Construction Manager: Graham (construction manager)

P3 Team Members/Project Team: KLS Earthworks & Environmental (Bonnybrook Emergency outfall channel)

Other Key Players: Hanscomb (owner’s design stage cost consultant); Aon (owner advisor and construction insurance broker); WPC Water Solutions; AGAT Labs; McElhanney (mgmt. services)

Legal: Blake, Cassels & Graydon (advised the City of Calgary)

2020 Rank: 77

2019 Rank: 76

2018 Rank: 78

2017 Rank: 76

2016 Rank: 79


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