McConnell Dowell was awarded by Wellington Water to deliver the Barber Grove to Seaview Wastewater Treatment Plant Pipe Duplication Project This project located in Wellington, New Zealand’s North Island, involves the installation of a new 1.2km long of one metre diameter pressurised wastewater pipeline from Barber Grove Pump Station to the Seaview Wastewater Treatment Plant. This new pipeline will service 90 percent of the residents in Hutt Valley, improve water quality to cater to the region’s growth and provide a robust solution in the event of earthquakes. • Re-engineering a live connection at the pump station has de-risked the construction works and protected the capacity of the existing network. This was achieved by collaboratively working with Wellington Water’s Operations Team. • Reduced impact on the 15,000 vehicles a day that use Randwick Road by switching to a trenchless solution • Programme savings achieved by changing the pipe material from concrete lined steel to PE • Risk of service strike and costs reduced by altering the alignment at the Seaview end. This will also provide better future connections. Barber Grove to Seaview WWTP Pipe Duplication Wellington, New Zealand
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