Discover how our on-site solutions have made a measurable difference across real projects.
Client: Multiplex / Infrastructure NSW
PumperDump was engaged by Multiplex to manage all concrete washouts during the redevelopment of the Sydney Fish Market at Blackwattle Bay. This ambitious project involved constructing a floating, wave-shaped roof and extensive harbour-front facilities, with strict environmental controls due to its sensitive location.
During the construction period, no washout waste could be stored on-site, and no slurry was allowed to enter the harbour. PumperDump delivered and collected over 150 bins, safely capturing and recycling more than 100 cubic metres of concrete and thousands of litres of water through our patented system.
Our service ensured compliance with strict environmental regulations, supported the project’s sustainability goals, and allowed Multiplex to maintain clean, safe, and efficient operations throughout construction.
Client: Sydney Metro / Construction Contractor
PumperDump was appointed to manage all concrete washouts for the Sydney Metro tunnelling and station construction projects, one of Australia’s largest urban infrastructure programs. The sites required precise management of concrete waste to prevent stormwater contamination and comply with stringent environmental and regulatory standards.
Over the project period, PumperDump delivered and collected multiple washout bins, capturing hundreds of cubic metres of concrete slurry and tens of thousands of litres of water, all fully recycled through our patented system. Our service ensured uninterrupted construction schedules while meeting sustainability and compliance requirements.
By providing documented washout volumes and recycled outputs, PumperDump helped Sydney Metro demonstrate environmental responsibility and maintain high safety and operational standards across all sites.
Client: John Holland
PumperDump was engaged by John Holland Group Pty Ltd to manage all concrete washouts during the major improvements at the Sydney Opera House. This $120 million project, part of the $152 million site-wide upgrade, was the most significant construction work since the Opera House was officially opened by Queen Elizabeth II in 1973.
The project involved excavating an enormous hole 12 to 15 metres below water level, tunnelling underneath both the Concert Hall and the Opera Theatre. Bob Leece, Chairman of the Sydney Opera House Building Committee, described the project as the equivalent of “digging an underground mine in Broken Hill” beneath one of Australia’s most iconic landmarks.
Due to the site’s high visitor traffic and sensitive harbour location, no washout waste could be stored on-site and no slurry could be allowed to escape.
Over the 18-month construction period, PumperDump delivered and collected almost 200 bins, safely removing 130 cubic metres of concrete and more than 11,000 litres of water from the site — all fully recycled through our patented system.
Client: Billbergia
PumperDump started collecting concrete waste and washout from the Bilbergia site at 88 Walker Street in North Sydney at the beginning of the construction process in January 2020.
In total, the site poured 19,628 m2 of concrete over a construction area of 33,560m2 from January 2020 to June 2023, and PumperDump was engaged throughout the whole project.
PumperDump provided 244 concrete separation washout unit (CWSU) services, two 1.3m3 Blow Back Bin (BBB) services, 151,2m3 BBB services and 101, 5m3 BBB services.
In total, PumperDump collected and recycled 417m3 of concrete, totalling 2.12% of the concrete poured. The service also enabled 25,000 litres of water to be recycled and 1098m2 of plastic to be avoided.
Slattery, the Property and Construction Advisory firm specializing in early phase advisory, quantity surveying and environmental assessments, compared the PumperDump system with the way the previous waste process. Using a benchmark rate of 680 Global Warming Potentials (GWP)/m2, the project would have a total carbon footprint of approximately 22,820,800 GWP or 22,820 tonnes of CO2. After analysing the concrete quantities, approximately half the carbon in the project is from concrete (12,169,360 GWP).
Based on reduced process steps and cleaner streams, they have now confirmed that the PumperDump approach appears to have saved 2.12% of the concrete on the project or approximately 1.06% of the total carbon of the project.
