The Plant is undergoing a major Stage 5 expansion. As part of these improvements a new sewage outfall is being built to accommodate greater capacity, improve effluent dispersion in the river, and allow for continued operation after a seismic event. There will be a live webcast of the event available for those who are not able to attend in person.
The project includes:
- Approximately 1,200m of 4.2m inside diameter tunnel at 40m below ground in soft ground conditions supported by 250mm-thick segmental concrete liner;
- Three on-land shafts: one at 16m internal diameter and two at 7m internal diameter;
- Approximately 240m of 2.5m diameter diffuser manifold pipe buried in the river bed complete with 24 diffuser ports, each with flexible duck-bill check valves;
- In-river riser shaft, approximately 3.8 m diameter, to connect the deep tunnel to the diffuser manifold (temporary excavation support anticipated to utilize a combined king pile and sheet pile cofferdam).
Topics for the meeting include: Project overview, pre-qualification process, procurement process, insurance/bonding requirements, regulatory requirements/constraints, schedule
The contractor information session will be held at Metro Vancouver's head office, Second Floor Board Room, at 4330 Kingsway, Burnaby, British Columbia, Canada. Or, via live webcast at: https://livestream.com/metrovancouver/events/5151216
Refer to http://www.metrovancouver.org/services/liquid-waste/consultations/annacis-island-wwtp/outfall-pipe-consultation/Pages/default.aspx for updates and more information.
For questions and/or to register, contact:
Gary Mui, Buyer, Metro Vancouver
778-452-2660/ gary.mui@metrovancouver.org
