174 Gayhurst Road, Dallington - Installation of new pump station.

Works Begin 15 Oct 2012 Works End 08 Feb 2013
Works Status Pending Completion
We are constructing a new pump station in the car park of the Trade Aid site at 174 Gayhurst Road. Works are expected commence 15 October 2012 and will be completed in February 2013.

Where we are working 

What we are doing 

  • A new pump station is required as the existing pump station is located in the red zone and no longer fully serves this catchment due to the significant damage it sustained following the February 2011 earthquake.
  • The pump station has been located on this site to ensure efficient and functional operation of the wastewater network.
  • Much of the pump station will be located below ground.
  • Above ground, the visible components of the system will be the access panels, an electrical control cabinet and a small odour filter dome.
The odour filter dome is designed to allow the pump station to “breathe” and any odours pass through a carbon filter before being released as clean air.
Once the pump station is operational any impacts of the system, including noise, vibration and odour, will be negligible.
An example of a similar pump station cabinet. Please note that the area around the Gayhurst Road pump station will be landscaped, and will be maintained by the Christchurch City Council.
During the process of installing the pump station, we will need to excavate a large pit within the Trade Aid car park, which will eventually contain the pump station. To ensure the stability of this excavated site, we will need to use sheet piles (see map above).
Sheet pilling will also be required in an area on Gayhurst Road where we will be installing connections between the wastewater main in the street and the pump station.
During construction we will be using a pump to remove any ground water around or in the excavated pit, to allow for a dry work area. This will done within both worksites of Gayhurst Road and the Trade Aid car park.
  • De-watering spears (see photo) will be installed into the ground and will pump and discharge ground water into the stormwater system.
  • This may cause a slight discolouration in the road reserve. This is due to the common minerals found in groundwater and is not a health or environmental concern.

De-watering spears

What are the time frames for this project?

  • 15 October 2012: Work begins on Gayhurst Road to install the pump station connections to the existing wastewater system. This process will work in with the current road works on Gayhurst Road, while the road is unsealed. Please be aware that there will be a small section that will require sheet piling during this stage of work (see map )
  • 29 October 2012: Construction of the pump station is expected to start within the Trade Aid car park. This will include sheet piling.
  • Please note: During sheet piling there will be increased levels of noise and vibration. An update notice will be sent out to affected residents prior to these works commencing.
  • Completion of the pump station is expected to take approximately 18 weeks, finishing in early February 2013.

Traffic impacts

  • Work on Gayhurst Road will continue to use the existing one way system that is in place heading north.
  • The footpath on the Trade Aid side of Gayhurst Road will be closed during the works.
  • South bound traffic will need to continue using alternative routes.

General information

  • This work will take place during the hours of 7:00am-6.00pm, Monday to Friday and it may be necessary for some weekend work to take place to complete this essential work.
  • The work will result in some noise and dust if there are dry weather conditions. The work will not impact on current power, wastewater or gas services, however we may need to request that residents restrict their wastewater use for a short period while we are connecting their lateral to the wastewater main.
  • All works are subject to favourable weather and on-site conditions.
  • During the period of construction we ask that you observe special cordons around construction areas for you and your family’s safety.

Need more information?

If you have any questions, or for any other information about this work, please contact the McConnell Dowell Infrastructure Rebuild Team on 0508 718 719 between the hours of 8:30 am and 5:00 pm Monday to Friday and we will be happy to help you. Any emergency calls outside these hours will be diverted to a Site Engineer.
A weekly email notice is being sent out to residents within the Dallington area to keep residents updated on all works and traffic impacts. If you would like to sign up to this service, please email us at Christchurch.comms@macdow.co.nz [1] with your name, address and phone number so we can include you.





Worknotice Status: 
Start date: 
Mon, 15/10/2012
End date: 
Fri, 08/02/2013
Project numbers: