Capability Statement

We were a member of the Adelaide Aqua consortia responsible for designing, building, and commissioning the Adelaide Desalination Plant, the state's largest ever infrastructure project. The reverse osmosis plant is one of the most efficient in the world and can produce 100 GL of fresh water each year.

The project encompassed all construction disciplines including bulk earthworks, civil structures, marine, tunnelling, mechanical, electrical, and building works. Some 10,000 people were employed during construction.

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 introduced new tunnelling techniques and lining systems to New Zealand when we replaced the 90 year old sewage pipe crossing Hobson Bay on Auckland's waterfront. And we delivered it ahead of schedule.

The new tunnel increases sewerage capacity for projected population growth and prevents wastewater overflows into the bay and Waitemata Harbour basin, a popular swimming and boating spot.

We designed and constructed the final section of Auckland's biggest water pipeline project, re-routing the pipeline to minimise impacts, and completing New Zealand's longest ever pipe-jack.

The 32 km long Hūnua 4 project connects Watercare’s reservoirs in Manukau to central city water storage, improving the capacity and the resilience of the city's water network.

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.

We're delivering the Fitzroy to Gladstone Pipeline (FGP) project for the Gladstone Area Water Board (GAWB) and the Queensland Government. The project, which will have the capacity to transport 30 gigalitres per annum, will enable long-term water security for urban and industrial customers in the region.

The FGP, which comprises an approximately 117 km long, 1 m diameter pipeline, a water treatment plant, reservoirs, and pumping stations, will also support the emerging hydrogen industry in the Gladstone region of Queensland. We have teamed up with BMD Constructions in a joint venture (the MBJV) to deliver the Project.

In joint venture with Diona (the Water North JV) we're one of three major framework partners delivering SA Water’s multi-billion dollar capital delivery program. The 'Frameworks' model fosters collaboration and innovation in the planning and delivery of water projects across metro and regional South Australia.

During the first four years (2020 - 24) our team delivered approximately 150 projects, including the design and construction of:

In alliance, we delivered the Western Corridor Recycled Water Pipeline (WCRWP), the backbone of the largest advanced recycled water project in the southern hemisphere and third largest in the world.

The project was an integral component of the Queensland Government’s A$9 billion South East Queensland Water Grid, the largest urban drought response in Australia.

We completed the first-ever ocean outfall on the rugged west coast of New Zealand’s South Island, successfully dealing with extreme weather, avoiding dolphins and penguins, and managing the challenging marine environment. This landmark project has significantly improved water quality in the Hokitika River.

Westland Cooperative Dairy Company Ltd appointed us to design and construct the 844 m long ocean outfall pipeline to stop the discharge of treated wastewater from their facility into the River.

We partnered with the Department for Infrastructure and Transport (DIT) to design and construct the new Granite Island Causeway Project. The awarding of the contract followed a collaborative design development process involving DIT, ourselves and our design consultant, WGA.

The Granite Island Causeway, located 83 kilometres south of Adelaide in Victor Harbor is a tourism, commercial and recreational landmark. It is the only link between Granite Island and Victor Harbor and is used by pedestrians, the iconic horse drawn tram service, a small number of vehicles that service the island, tourism attractions and the fishing industry. It is estimated that the number of pedestrians accessing the Causeway is approximately 700,000 per annum.

We delivered the marine works for BP’s LNG expansion project in Tangguh, located in the remote area of Bintuni Bay in West Papua. Our customer, PT Saipem Indonesia, was part of an EPC joint venture involving Chiyoda-Saipem -Tritati -SAE.

The overall expansion project comprised a full additional natural gas liquefaction train, including an onshore receiving facility (ORF), an additional Boil of Gas (BOG) recovery, utilities, flares, and all infrastructure to support the facility.

We developed, designed and constructed an alternative and more cost effective solution for this new outfall, saving North Shore City Council $7 million.

Now discharging high quality treated effluent 2.8 km out to sea, the project is delivering on the Council's commitment to protect and improve the quality of beaches in the area.

We designed and constructed the marine structures for BCI Minerals’ Mardie Salt & Potash Project in Western Australia, using our innovative canti-traveller system for speed and low impact delivery.

The 'Mardie' Project is a large-scale, solar evaporation operation on the Pilbara coast. Capacity of the completed facility is estimated to be 5.35 million tonnes per annum of high purity salt and 140,000 tonnes per annum of sulphate of potash, over an operating life of at least 60 years.

We refined the initial concept design and constructed a new outer wharf structure at HMAS Coonawarra in Darwin to support the Australian Defence Force (ADF). The project involved the construction of a new 250 m long wharf and two approach jetties.

While the final structures are simple in their geometry and configuration, the site location and operational requirements were challenging.

After extensive pre-planning and a fast mobilisation, we constructed the Agnew Gas Pipeline Project for APA Group in the south-southwest of Western Australia. The new pipeline supplies gas to the Agnew gold mine site to supplement the mine’s renewables-fuelled power supply.

Our scope consisted of the construction of a 25 km long, DN150 mm, dual layer FBE coated, AS2885 compliant, high pressure natural gas pipeline, along with the tie-ins to the swan necks at the above ground Kyarra Offtake Station and the Agnew Delivery Station.

Following successful completion of an Early Works contract for the APLNG project, MCJV, a joint venture between ourselves and Consolidated Contracting Company Australia Pty Ltd, was awarded an EPC contract for delivery of 360 km of the main export pipeline, a 57 km lateral pipeline, and associated facilties.

The overall APLNG project included the development of substantial coal seam gas resources in the Surat and Bowen Basins. The key elements of the project were the transmission pipeline, subsea crossing (Narrows Crossing) and a multi-train LNG facility on Curtis Island, near Gladstone.

On behalf of Unitywater, we're delivering critical new water and wastewater infrastructure to support growth on Queensland's Sunshine Coast. The new pipelines, pump stations, and storage reservoirs will support the new Aura and Harmony communities in the Caloundra region.

For the Aura development (which will grow to 50,000 residents by 2050), we're delivering a new wastewater network that includes over 12 km of 900 mm diameter pipeline and one pump station. We're also delivering a new water supply network for this community, that includes over 12 km of 800 mm diameter pipeline connecting the Ewen Maddock Dam to a new 12 ML water reservoir.

We constructed the Lake Way Gas Pipeline (LWP) and the Karlawinda Gas Pipeline (KGP) projects for APA Group in Western Australia.

The LWP pipeline is located 15 kilometres south of Wiluna and transports natural gas from APA’s Goldfields Gas Pipeline (GGP) to SO4’s Lake Way facility. SO4 aims to become a major exporter of Sulphate of Potash and the LWP pipeline provides gas for fuelling power generating facilities and other equipment within their process plant.

We constructed the Murrin Murrin Looping Project for APA Group, east of Lenora in Western Australia. The objective of the project was to increase the capacity of the Murrin Murrin Lateral to enable APA to service future downstream customers.

Our scope consisted of the construction of a 13.8 km long, 200 mm diameter high pressure gas pipeline, along with the tie-ins to an existing above-ground offtake station. The pipeline runs from a connection off the existing Murrin Murrin Lateral.