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Waterproofing Eastern Adelaide stormwater reuse scheme

This is an Eastern Region Alliance initiative. The new infrastructure captures stormwater in 4 reserves located in Tusmore, Mahogany, Felixstow, and Athelstone, and treats it to a non-potable water grade for irrigating approximately 50 parks and reserves. The stormwater is retained in basins, creeks and rivers and larger pollutants are removed. It is injected into Aquifer Storage Reuse (ASR) sites, the water runs through new wetlands and biofilters, and is disinfected using ultraviolet rays. The water is then extracted and distributed via a pipe network to demand areas.

GO was selected to work in partnership with Walbridge Gilbert Aztec to design and construct the mechanical, electrical, and control components, including: stormwater extraction structures, gross pollutant removal devices, extraction, injection and reticulation pump stations, screen filters, UV disinfection units, bore heads and shelters, 3 buildings, concrete tanks, power supplies, switchboards and communication systems.

Carnarvon wastewater reuse scheme

Guidera O'Connor was selected to design, manufacture, supply, construct, install, test and commission an upgraded reuse facility with filtration and disinfection modules and a separate chlorine storage building at the Carnarvon Brickhouse Waste Water Treatment Plant. This work included tie-ins to existing pipework adjacent to lagoons, reuse filtration equipment, a chlorine storage and dosing facility, irrigation pump station, lined steel storage tanks and electrical, instrumentation, controls and SCADA.

Glenelg to Adelaide Parklands reuse scheme

This scheme is part of the SA Government's Water Proofing Adelaide Strategy. It treats and transports recycled water from the Glenelg Waste Water Treatment Plant, primarily to irrigate the Adelaide City Park Lands, but with the option of dual reticulation schemes for future clients. GO was responsible for the design, construction testing and commissioning of the buildings, pump stations, screen filters, a 37 MLD Ultrafiltration Plant and Ultraviolet Disinfection plant, and chemical storage and dosing systems. The design incorporated a number of innovations. The pumping and pipeline design eliminated the need for a break tank in the Adelaide parklands, a vacuum piping system allowed chlorine gas to be transferred safely, and a transfer pump station was constructed underneath the existing ocean outfall so that wastewater flows were not interrupted during the tie-in to the new plant.

“Overall the project has achieved early completion, provided higher standards of water quality than required under the agreement and achieved all of this within an agreed budgetary framework. The Lord Mayor of the City of Adelaide has commended the project execution for the way in which community consultation and construction activities were undertaken, minimising disruption and generating only a handful of complaints.”
John Ringham  Chief Operating Officer, SA Water

Waterproofing the West stormwater reuse scheme

Waterproofing the West provides a region wide system to harvest, treat and store up to 2400ML of stormwater per annum in specific locations and then distribute non-potable water throughout the western Adelaide region. GO undertook the Early Contractor Involvement (ECI) services followed by a Design and Construct contract for the Mechanical, Electrical and Integrated Communication and Control components of the Project including all structures, process equipment, pipe-work, electrical, instrumentation, controls and SCADA. GO identified significant cost savings during the ECI process and delivered the project ahead of schedule.

“For this Project Guidera O’Connor displayed the behaviours that as a Project Manager you would like to see Contractors exhibit on a contract which, whilst lump sum in nature, required an approach that was relationship based to achieve the outcomes and objectives. They were resourceful, solving issues as they presented themselves and got on with the job with minimal reliance on the Contract to sort out issues and consistently delivered ahead of the advised schedule.” 

Michael Hood  Waterproofing the West Project Manager, Aurecon.

Adelaide Airport stormwater reuse scheme

This scheme supplies up to 270ML of urban stormwater from the Brownhill/Keswick Creek system to customers in the Adelaide Airport area. Guidera O’Connor undertook ECI services to produce an open book estimate for a suitable design. GO was awarded the contract for the construction of a Brownhill Creek extraction pipe, screen pit and package pump station, media filtration system, biofilters, bore injection and tanks. Works required laying 4 klm of distribution pipelines and creating all the earthworks and access tracks.