Overcoming the unique challenges associated with working in a sensitive wetland environment, Aquatec designed and constructed a concrete pump station with adjoining storage vessels to service the spectacular Aureus Estate development.
Minimising environmental impact in a stunning coastal location
In 2018, Aquatec were approached by Planit Engineering to provide design advice for a new 500 lot development in Skennars Head, New South Wales. Originally the concept of a pressure sewer scheme was considered, but the final design incorporated a gravity sewerage network with the entire development draining to a single sewer pump station.
The developer Intrapac then partnered with civil contractors CCA Winslow to deliver the project. The construction of a deep pump station was immediately identified as a key challenge, with the site located adjacent to a sensitive wetland ecosystem and restricted by strict environmental constraints with sub-terranean water flows.
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Comprehensive, end-to-end project delivery model
CCA Winslow engaged Aquatec to provide the design, construction, civil installation and commissioning of the 2.25m diameter x 8.22m deep precast heavy duty concrete pumping station to Ballina Shire Council specifications. As part of the solution, Aquatec also delivered:
- Two 25,000 litre horizontal FRP storage vessels, 1.85m diameter x 9.8m long with risers
- Separate concrete chambers containing valves and magnetic flow meter
- Supply and install of a 6m galvanised light pole and ground mounted odour filter
- Detailed design submission and drafting for the pump station and backfill drawings
- Switchboard with back-up generator connection point and mains power metering
- Full civil installation including site establishment, excavation, backfill and pipework
- Geotechnical certification and complete onsite commissioning to enable final sign-off.
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“Working with Aquatec was a highly co-operative experience with mutual commitment to achieving desired outcome and establishing good relations and reputation with local council, consultants and client.”
— Adon Dinsmore, Senior Project Manager, CCA Winslow
Peace of mind for contractor and client
- Value for money was a key factor for CCA Winslow when evaluating options for the construction of this crucial wastewater asset, but of equal importance was mitigation of the environmental risk associated with excavating near a wetland with rock and groundwater present. Aquatec’s project team absorbed this risk by taking responsibility for the complete installation as part of our end-to-end service model.
- A caisson ‘in-situ’ construction alternative was explored, but was cost-prohibitive when compared to a precast solution.
- The use of Aquatec’s customised fibreglass horizontal storage vessels allowed additional emergency holding capacity while minimising total depth of excavation in challenging conditions.
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“The ease of construction, attractive delivery timeframe and competitive price made the Aquatec product stand out, and prior experience with the Aquatec team meant we were confident their solution was a good fit for this unique project.”
— Adon Dinsmore, Senior Project Manager, CCA Winslow