McConnell Dowell have been awarded the next stage of Watercare’s North Eastern Sub-regional Wastewater Scheme, the Warkworth to Snells Transfer Pipeline. The pipeline is the next stage of the scheme which includes the Snells Algies Outfall completed by McConnell Dowell in 2021, and the Warkworth Pump Station currently being constructed by the team.
McConnell Dowell’s success in securing the contract was largely due to the Direct Pipe® construction methodology proposed to minimise disruption has been used to complete (among other projects) Watercare’s Army Bay and Snells Algies Outfall Projects and the Westland Milk Products outfall project in Hokitika. Our commitment to excellent workmanship, coupled with productive relationships and robust health and safety systems resulted in high-quality projects that were delivered with minimal disruption for the client.
The majority of the transfer pipeline will be installed using the trenchless micro tunnelling technique Direct Pipe®, with a tunnel boring machine (TBM). This installation will be completed in three Direct Pipe® drives.
The new wastewater transfer pipeline comprises the following:
- a dual rising main approximately 1.4km long from the Warkworth Pump Station to a new break chamber, and
- a single gravity sewer approximately 3.6km long connecting the chamber to the new Snells Beach Wastewater Treatment Plant.
These wastewater infrastructure upgrades will ensure local communities continue to have reliable, resilient wastewater services and meet the needs of Warkworth’s growing population well into the future. The improvements will also reduce overflows and discharges into the Mahurangi River.
Click through to find out more about the Warkworth Pump Station Project under construction or the Snells Algies Waterwater Outfall Project.
