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Seventh Street Pump Station and Force Main

In 2019 a new sanitary sewer pump station will be installed at the intersection of Park Avenue and Seventh Street to divert flow from the Chase River Trunk Sewer.  A new forcemain will also be constructed between the new pump station and the Regional District of Nanaimo’s Trunk Sewer at the corner of Woodhouse Road and Eaton Street.   Additional work includes the replacement of watermain in the project area identified for replacement. 

Figure 1. 3D Rendering of Proposed Pump Station Site
Figure 1. 3D Rendering of Proposed Pump Station Site

map, 7th street, force main, pump statiom
Figure 2. Project Location

Contact Information

If you have any comments or questions on the planned improvements, please contact us at 250-756-5321 or email constructioninfo@nanaimo.ca.

  • Progress

    Construction is planned to begin in early 2019 and be complete by the end of 2019.Additional information will be made available on this website when it is known.

    Project Updates

    • Jan. 6, 2020:  Final paving and boulevard restoration to be complete in spring of 2020.
    • Nov. 21, 2019:  Estimated Substantial Completion is Nov. 30, 2019.
    • Feb 5, 2019:  Construction has started.  See https://www.nanaimo.ca/construction/Details/427 for updates during the construction period.
    • Nov 29, 2018:  The project is currently out for tender and construction is anticipated to start in the first quarter of 2019.

     

  • Documents
  • Details

    Project Scope

    • The works consist of:
      • A new pump station on Seventh Street at Park Avenue with:
        • Two 110hp submergible pumps
        • 300kw standy generator
        • Passive odour control system
      • 1200m of new sanitary main along Seventh Street from the pump station to the Regional District of Nanaimo trunk main at the intersection of Eaton and Woodhouse.
      • Abandonment of the existing pump station at 840 Park Ave.
      • 800m of new sanitary sewer mains west of the pump station site to divert flows to the new pump station including a crossing of the Chase River.
      • Watermain replacement along Seventh Street from Park Ave to Victoria Road.
      • Associated road works.
  • Background

    Constructed in 1980, the Chase River Trunk Sewer is 3400 meters in length; it starts at Seventh Street and Stirling Street and runs to the Regional District of Nanaimo Chase River Pump Station near the corner of Highway 1 and Haliburton Street.  In 2014 the Chase River Sanitary Sewer Master Plan was completed, this study found nearly 2400 metres (about 70%) of the sewer is operating at capacity and in some sections there is a risk of the sewer surcharging and overflowing during a wet weather event. 

    Conventional replacement of the sewer would be challenging as there are some sections of the sewer which are between 7 to 10 meters deep, and some of those deep sections are under residential neighborhoods or environmentally sensitive areas.

    An extensive options analysis was completed to determine the best approach to address the capacity issues.  Constructing a pump station which diverts the flow from the Chase River Trunk Sewer was found to be the option which is the most cost effective, the least disruptive to the existing neighborhoods and has the lowest potential environmental impact.

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