Southeast Collector Trunk Sewer

Province: Ontario

City/Region: York and Durham regions

NR

Project Rank

Back to Top100 Infrastructure Projects

Project End: 2016

Project Type: Water Wastewater

Industry Sector: Water

Project Amount: $456 million

Funding Source: Public

Municipal Funding: $546 million

Previous Rankings

201584
201480

About The Project

Although this project has been in development since 2002, the EA was not approved until early 2010. The earth pressure balance tunnel boring machines, segmental precast concrete tunnel lining, and the biofilters and bioscrubbers used for odour control were all procured in advance by the owner. Hatch Mott MacDonald and AECOM (in a joint venture) completed the design of the tunnel, shafts, and surface facilities and are administering the construction contract. Project design involves a 15-km-long, 3,000-millimetre-diameter tunnel with 17 access shafts ranging between four and 48 metres in depth and four to 14 metres in diameter.

Construction is underway, with tunnelling completed and shafts and facilities being fitted. Live flows were commissioned by the end of 2014. The project is scheduled for completion by 2016.

Project Owner: Regional Municipality of York

Project/Construction Manager: A JV of Hatch Mott MacDonald and AECOM (detailed design and construction management)

Contractor: Zublin/Strabag (prime contractor, tunnel contractor); Zublin (subcontractor, shaft temporary support and base plugs); Maple Reinders (subcontractor, facilities contractor)

Environmental Services: AECOM (integrated EA)

Other Key Players: Monteith and Sutherland (survey); REA (health and safety); CRA (geotechnical and hydrogeological); LVM (geotechnical engineer, materials testing, quality assurance)

TBM Supplier: Caterpillar

Other Suppliers: Armtec Holdings (precast concrete tunnel lining); Biorem (biofilters and bioscrubbers); Doka (formwork); BASF (ground conditioning); Miller Group (concrete and bentonite); Harris Rebar (rebar supply and installation)

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