Capability Statement

We used the optimum mix of tunnelling and trenched construction techniques to deliver the Barber Grove to Seaview Wastewater Treatment Plant Pipe Duplication Project for Wellington Water, causing the least impact possible.

The project involved the installation of a new 1.2 km long, 1 m diameter pressurised wastewater pipeline. It services 90% of the residents in Hutt Valley, improving water quality and catering to the region’s growth.

With a carefully designed tunnelling methodology and construction program to minimise impacts, we successfully delivered the Corban Reserve Stormwater Upgrade in Auckland. The new facilities allow for future growth in the area, while also protecting the local ecology.

This was an environmentally and socially complex project, with homes, schools, native flora and fauna, and parklands intertwined with our worksites.

We had an experienced tunnelling team ready to go, so we took on emergency work for Auckland Council Healthy Waters after major Auckland floods.

The Corban Reserve Stormwater Upgrade for Healthy Waters was still underway at the time of the flooding. Our team had just finished the 270 m long tunnelling drive at that job, so it was good timing and an easy transfer of skills, experience, materials, and equipment from the worksite out west to Greville Road for the Stormwater Culvert Upgrade.

Drawing on our industry-leading trenchless construction experience, we delivered the Warkworth to Snells Transfer Pipeline for Watercare, continuing our strong relationship with them.

The project was part of Watercare's North-East Wastewater Servicing Scheme, which conveyed wastewater from Warkworth to Snells Beach. The scheme will cater for future growth and enable Watercare to decommission the existing Warkworth Wastewater Treatment Plant, which discharges into the Mahurangi River.

Proposing a trenchless solution to minimise disruption, Watercare Services awarded us the Snells Algies wastewater pipe and outfall construction project. It resulted in new world record - a 2021 metre long Direct Pipe® drive delivered using a micro tunnel boring machine.

The project was the first phase of a three-phased scheme to improve water quality in the Mahurangi Harbour and cater for population growth in the Warkworth and Mahurangi East communities north of Auckland.

Using state-of-the-art Direct Pipe® tunnelling technology for the first time in New Zealand helped us mitigate the significant risks we faced on Watercare's Army Bay Ocean Outfall project.

They engaged us to design and construct a new wastewater outfall, upgrade an existing pump station, and build a new ultraviolet disinfection facility to increase the outfall capacity of their Army Bay Wastewater Treatment Plant at Shakespear Regional Park.

We’re working with Sydney Water to deliver the Thompsons Creek Stage 1 - South project, part of a program of new wastewater infrastructure to support western Sydney’s rapid growth.