Capability Statement

We designed, constructed, commissioned and now operate the Adelaide Living Beaches Sand Transfer Infrastructure project in South Australia. Through this network of pipes and pumps we're moving 150,000 cubic metres of sand each year, mantaining the health and amenity of Adelaide's inner beaches.

Sea conditions along Adelaide’s metropolitan coastline results in longshore drift of sand from south to north, stripping the southern beaches of sand when not replenished.

We devised, designed, constructed and operated the unique Tweed River Entrance Sand Bypassing system, building it in the late 1990s and operating it for 25 years. The facility ensures a safe and navigable entrance to the Tweed River, and maintains the ecology and amenity of beaches on the southern Gold Coast.

The centrepiece of the facility is the sand collection jetty which is approximately 450 m long and extends approx 300 m from the shoreline. A sand trap or depression is formed under the jetty by the operation of 10 submerged jet pumps approximately 10 m below the seabed. Natural wave action feeds sand into this trap. Up to five jet pumps are then used to create a sand-water flume which flows under gravity to the control area.

When a devastating earthquake and multiple tsunamis hit the island of Tutuila, the Department of Public Works of American Samoa engaged us to construct a new 390 feet (119m) sea wall at Taputimu, in the southwest of the Island.

To create the shoreline protection, our team first built 318 lineal feet of rock revetment, before constructing the crib wall on top.

The project scope included stabilising the banks of the Waikato River alongside the control gates that manage water flow to the Waikato Hydropower System.

Powerful water flows erode the banks alongside the gates, and Mercury’s asset surveillance regime had identified the need for intervention to prevent further erosion.

We designed and constructed a new ocean wharf, seawall, and concrete and asphalt hardstands, to improve access and operations at this 70 year old tuna canning facility in American Samoa.

Our scope consisted of the design of all works, reclamation of just over 5,000 m² of the foreshore, construction of a 125 m long new rock seawall and natural rock revetments, drainage works, pavement construction, and dredging of the seabed around the wharf to enable the fishing fleet access.

We're delivering the Eyre Peninsula Desalination Plant Marine Works for SA Water.

This project plays a key role in supporting a more reliable and climate independent water supply for the Eyre Peninsula, reducing reliance on the Uley South Basin and preparing the region for future growth.

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.

Engaged by New Zealand Steel Mining, we relocated and extended a slurry line to their Single Buoy Mooring (SBM) to cater for larger vessels. The project was located in a remote, rugged west coast environment, with subsea pipelaying in 35 m deep seas, and working windows restricted due to weather.

The mine processes iron sand into a concentrate, which is stockpiled and periodically pumped via fresh water slurry to an export ship moored at the SBM 3 km offshore. Replacement of the export vessel with a new, larger capacity vessel required more sea room to manoeuvre into, and away from the SBM. Hence its relocation and the need for the pipeline extension.

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.

We successfully delivered the Breakwater Road Realignment project in Geelong, overcoming challenging ground conditions and saving our customer money by rethinking the construction approach.

Breakwater Road is an essential crossing of the Barwon River, carrying around 20,000 vehicles each day. The existing bridge was in a flood plain and when it rained heavily it was closed down, forcing traffic through the centre of Geelong and causing delays for drivers. There was also a height restriction with the exiting intersection which meant trucks bigger than 3.7 m couldn't fit under the Melbourne-Warrnambool rail bridge.