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PFAS Investigation &
Management Program

RAAF Base Pearce

RAAF Base Pearce PFAS Investigation


Summary of the Investigation

In April 2016, Defence commenced a detailed environmental investigation into the presence of per- and poly-fluoroalkyl substances (PFAS) on and in the vicinity of RAAF Base Pearce.

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. The DSI involved sampling of soil, sediment, surface water, groundwater, small fish and edible produce. A detailed report has been finalised and is available on the publications page.

Human Health Risk Assessment & Ecological Risk Assessment
Based on the DSI findings, a Human Health Risk Assessment and Ecological Risk Assessment commenced in late 2016 to evaluate potential exposure pathways to people, plants and animals. The Human Health Risk Assessment has been completed and a report is available on the publications page. The Ecological Risk Assessment is due to be completed in late 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.