PROJECT
Mt Crosby Water Treatment Plant East Bank Flood Resilience Program
The Mt Crosby Water Treatment Plants supply about fifty per cent of South East Queensland's drinking water, including the cities of Brisbane, Ipswich and Logan. It is the largest source of treated water supply to the South East Queensland Bulk Supply Network. The East Bank Flood Resilience program focuses on mitigating the flood risk to this essential infrastructure and renewing vital assets, while paying tribute to the rich cultural heritage of the site.
PROJECT HIGHLIGHTS
Location
Brisbane, South East Queensland
Client
Seqwater
Project Value
$20 million
Contract Period
November 2021 - December 2022
PROJECT BACKGROUND
The program of works was comprised of four stages.
Stage One - Preserving our heritage including preservation and restoration of the area's Works Hill residential precinct. Constructed in the late 19th century, it comprises two detached houses, four duplexes and one cottage.
The project sought to improve the livability of the cottages and connect them to modern services in a manner that aligns with the heritage values of the precinct. The works included removal of asbestos and lead paint in and around the cottages. The works also connected the cottages to modern services including connection to waste-water treatment sytems and water mains, improvements to electrical wiring and switchboards, and the installation of NBN connectivity.
Stage Two - Protecting critical infrastructure was the most critical stage of the EBFRP and involved constructing a new substation, high voltage electrical infrastructure and control systems (including a switch room) on higher ground. The civil works included:
- New sub-station pad located above 1:10,000 AEP flood level & access road
- 36m long mass block retaining wall up to 12m high
- Electrical conduit installation to connect raw water pump station to new substation, including a bank of 30 conduits
- Upgrade to the Eastern Access Road including reconfiguration of the six-way intersection.
Stage Three - Improving connectivity including building a new traffic bridge to provide vehicle access over the Brisbane River.
Stage Four - Planning for the future including building a new pump station on higher ground.
CPM SCOPE OF WORK
Stage one and stage two
- Project management
- Design management
- Construction surveillance management of all project assets to be handed over to Seqwater
- Project controls - scheduling, budget control, risk management and reporting
- Management of external consultants
- Contract management
- Design review
- Stakeholder engagement and management
Stage three and stage four
- Complete and efficient handover to Seqwater
KEY ACHIEVEMENTS
- CPM unlocked solutions and drove the project to maintain the critical path program, despite the discovery of unexpected ground conditions (including significant archaeological finds, contaminated site, and unexpected geotechnical ground conditions)
- Using thorough design management and structured collaboration between the design and construction team, we ensured engineering efficiency and quality in the face of changes to 80% of the design after construction had started
- We maintained stakeholder engagement, respected the heritage value of the precinct, and met the budget program and cost in the face of unexpected structural issues and heritage finds.
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Cressbrook Dam
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