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PFAS Investigation &
Management Program

HMAS Stirling

HMAS Stirling (Garden Island) PFAS Investigation

Summary of the Investigation

HMAS Stirling
In May 2017, Defence commenced a detailed environmental investigation into the presence of per- and poly-fluoroalkyl substances (PFAS) on, and in the vicinity of, HMAS Stirling.

The objective of this environmental investigation is to identify the nature and extent of PFAS in the environment from the use of legacy firefighting foam at the Base.

The three stages to the investigation are outlined below:

Preliminary Site Investigation
The first stage of the investigation, the Preliminary Site Investigation (PSI), has been completed.

Detailed Site Investigation
The Detailed Site Investigation (DSI) has been completed. This stage involved sampling on-base, on the surrounding Garden Island and the immediate near shore marine environment. A detailed report has been finalised and is available on the publications page.

Human Health and Ecological Risk Assessment
Based on the initial DSI findings, an Ecological Risk Assessment (ERA) has commenced to better understand potential risks of PFAS exposure to the environment. Currently, there is no requirement to conduct a Human Health Risk Assessment (HHRA). The ERA is expected to be complete in the thrid quarter of 2018.
Further information on the investigation process can be found at the investigation process page.

The findings from the investigations will be used to identify and prioritise site specific management actions to address PFAS contamination.

Defence is committed to regularly updating the community throughout the investigation. As well as community engagement events, updates are provided through the project website, newsletters and factsheets as new information becomes available.