Sydney Water St Mary’s Wastewater Recycling Plant Demolition

Project Details

Client: Burton Contractors
Timeframe: 2 months
Value: $250,000
Location: St Marys WRP, NSW

St Marys Wastewater Recycling Plant is one of the biggest water recycling plants in Australia.
Enviropacific were engaged by Burton Contractors to conduct the detailed demolition of two 9 tonne lime silo towers and a methanol fuel storage system including the excavation of a 30kL underground dual walled, fibreglass steel tank. These works were essential to enable the future construction of major new structures at the plant, associated with the broader Lower South Creek Treatment program delivery for Sydney Water.

In accordance with SafeWork NSW requirements, the works were conducted under Enviropacific’s NSW demolition license. As the demolition works were conducted within an operational Wastewater Recycling Plant, there was great emphasis on ensuring no disruptions to services. The project required detailed planning and project execution to mitigate these potential disruptions and involved detailed engineer assessment of structures. Utilising Enviropacific’s demolition expertise, a revision of the original methodology was undertaken in order to accelerate the works and ensure the project was delivered safely and on time.



underground dual walled excavation