North West Growth Centre – Riverstone Wastewater System
28 July 2025
Location: Schofields, NSW
Duration:
November 2018 – June 2021
Client:
Sydney Water / Abergeldie Contractors
Soilsrock Engineering was engaged by Sydney Water and Abergeldie Contractors to deliver geotechnical and environmental engineering services for the construction of the Riverstone Wastewater System, a critical infrastructure project within the North West Growth Centre.
Our role involved:
- Geotechnical site investigations, including borehole drilling, sampling, and laboratory testing, to characterise subsurface conditions and inform structural and excavation design.
- Waste classification and environmental assessments in compliance with NSW EPA guidelines, supporting the safe and legal disposal of spoil materials.
- Design support and geotechnical verification for the secant pile shoring wall system with internal steel bracing, used to facilitate deep excavation works adjacent to sensitive infrastructure.
Soilsrock worked closely with Sydney Water’s project team and Abergeldie’s construction crews to ensure all geotechnical and environmental requirements were met on time and within budget. Our involvement contributed to the successful delivery of vital wastewater services to one of Sydney’s most rapidly expanding residential regions.
Location: 137 South Street, Marsden Park, NSW 2765 Project Duration: November 2017 – February 2022 Client: Abergeldie Contractors / Sydney Water Soilsrock Engineering was engaged by Abergeldie Contractors and Sydney Water to provide specialist geotechnical and environmental consulting services for the construction of the Riverstone Sewerage Pumping Station , a critical infrastructure project within the Marsden Park Industrial Precinct. Our scope of work included: Preliminary and detailed geotechnical investigations, including Standard Penetration Testing (SPT), rock coring, and Cone Penetration Testing (CPT) to assess subsurface conditions and evaluate backfill suitability. Foundation pad design and testing , including proof rolling to verify subgrade strength and performance. Routine site inspections to monitor construction progress and ensure geotechnical compliance with project specifications. Waste classification assessments for excavated materials in accordance with NSW EPA guidelines. Design and verification of a secant piled shoring wall system with internal steel bracing, providing temporary lateral support for deep excavation works in proximity to existing services and infrastructure. Soilsrock Engineering’s contributions ensured geotechnical risks were managed effectively, enabling the successful delivery of essential wastewater infrastructure to support Sydney’s north-western growth corridor.
LOCAL: NORTHERN BEACHES – MONA VALE NSW 2105
LOCAL: NORTHERN BEACHES - CHURCH POINT NSW 2105
