Client
WA Water Corporation
Location
Karratha, WA
Contract Value
$42M
Duration
14 months
Completed
March 2024
Team Size
92 peak (FIFO)
End-to-end civil delivery of a regional water supply network upgrade servicing Karratha and surrounding communities, including 28 km of new trunk main and pump station upgrades.
Certifications
The Challenge
Delivering critical water infrastructure in one of Australia's most remote and climatically extreme regions - sustained temperatures above 48°C, cyclone season constraints, and a workforce that required FIFO rotation from Perth every two weeks.
Our Solution
Le Gardenz established a Karratha operational hub 6 months before mobilisation, pre-positioning plant and materials to de-risk the programme. All paving and concrete pours were scheduled to night shifts to meet specification tolerances. A 14-day FIFO roster was implemented for the 92-person peak workforce.
Scope of Works
28 km DN600 HDPE trunk main installation
4 pump station upgrades including new VSD drives
Civil earthworks - 480,000 m³ cut/fill
Access road construction - 14 km
Erosion and sediment control across 6 work fronts
Reinstatement of all disturbed areas
Outcomes
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28 km of DN600 trunk main installed and pressure tested
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4 pump stations upgraded to remotely monitored, variable-speed configuration
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Programme delivered 3 weeks ahead of contracted milestone
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Zero lost-time injuries across 220,000 worked hours
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All paving works completed within material temperature specification
