Arbutus Attenuation Tank: Overnight Bypass Pumping

From the CRD:

Construction of the Arbutus Attenuation Tank requires temporary bypass pumping overnight. This work is scheduled to begin Tuesday, November 19 and is anticipated to be complete by the end of the week.

What to expect:

  • A temporary bypass pumping system has been installed next to the site.
  • Noise associated with construction will be ongoing overnight. Diesel-powered pumping units will be in operation and are equipped with acoustic enclosures to reduce noise.
  • Flood lights will be used to safely illuminate the work area.
  • Temporary closure of trail sections in Haro Woods.

Work Hours:

  • Construction is required overnight.
  • Once this work is complete, normal work hours will resume Monday to Saturday, 7:00am–7:00pm.


The Arbutus Attenuation Tank will be an underground concrete tank that will temporarily store wastewater flows during high volume storm events to reduce the number of sewage outflows. The Tank is located on CRD-owned land in Haro Woods that was already partially cleared and previously disturbed during the construction of existing sewers. Once construction is complete, the site will be planted with vegetation appropriate for the local woodland setting.

About the Wastewater Treatment Project

The Wastewater Treatment Project will provide tertiary treatment for wastewater from the core area municipalities of Victoria, Esquimalt, Saanich, Oak Bay, View Royal, Langford and Colwood, and the Esquimalt and Songhees Nations by the end of 2020.

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