Defence progresses to the next phase of the Pearce environmental investigation

Defence is progressing to the next stage of the environmental investigation at RAAF Base Pearce to identify the extent and levels of per- and poly-fluoroalkyl substances (PFAS) on, and in the vicinity of, the base.

Defence commenced the initial phase of the investigation called the Preliminary Site Investigation in May 2016, which has involved:

• Providing information to the community via a dedicated project website, project fact sheets and an introductory community information session in May 2016.
• Surveying residents regarding their water use.
• Consulting with key WA and local government stakeholders.
• Providing alternative water supplies to eligible residents if required.
• Reviewing the bases’ history for AFFF use and identifying potential sources of PFAS.
• Collecting and analysing off-base groundwater samples, including from residential properties in close proximity to the base.
• Developing a plan for the next stage of the process - the Detailed Site Investigation.

The Detailed Site Investigation will commence in September 2016, and includes:

• Comprehensive sampling, which will include on and off-base sampling in soil, groundwater, surface water and drainage lines to further assess the nature and extent of PFAS on, and in the vicinity of, the base.
• Investigating and modelling how PFAS moves through the environment and preparing the detailed site investigation report.
• Preparing a Human Health Risk Assessment and Ecological Risk Assessment if required based on sampling and analysis conducted.

Residents, businesses and local stakeholders will be briefed and offered a chance to discuss the findings of the Preliminary Site Investigation with Defence and WA Government representatives at a Community Information Session to be held on Thursday 22 September from 6.30pm at the Bullsbrook College.

Defence continues to work collaboratively with the WA Government authorities to ensure they have current information when considering possible actions.

Defence provides the environmental investigation reports to all relevant state government agencies to ensure they have current information to inform their management decisions.

Media note: 

Further details on the Community Information Session are available athttp://www.defence.gov.au/ID/Pearce/CommunityConsultation.asp

Further information about the investigations at Pearce can be found at
http://www.defence.gov.au/ID/Pearce/Investigation.asp