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12th Avenue Drainage Pump Station


Tsawwassen, British Columbia


Pump Stations


Building Structures

Electrical Instrumentation & Controls

Environmental Assessment

Building Mechanical

Water Resources


The 12th Avenue Drainage Pump Station required a complete replacement as it was at the end of its useful life.

The pump station replacement is part of the City’s 12th Avenue Stormwater Management improvement plan. Key considerations for this upgrade were:

  • Station to meet post-disaster criteria.
  • Presence of liquefiable soils require ground densification (stone columns) under the station footprint to satisfy the seismic criteria.
    Design accounts for climate change through incorporating a future capacity increase by simply changing the pumps with all other systems being sized accordingly.
  • Three submersible Flygt axial-flow pumps providing an initial 3.6 m³/s combined, with an option to upgrade to 5.4 m³/s.
  • Pumps operate on VFDs.
  • Dyke was raised from an elevation of 3.1 m to 4.1 m.
  • Pump station is located within a Metro Vancouver park and required significant environmental permitting.
  • Stationary generator on site, sized to operate two pumping units.
  • Architectural design of the structures.
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City of Delta

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Project Highlights


Project Costs

AE’s scope of work includes:

  • Concept, preliminary and detailed design.
  • Environmental assessment and preparation of applicable permits.
  • Tender, construction and post-construction services.

The project was completed in December 2020.