For anyone else who didn't have a clue what PFAS were, an Australian Department of Defence website gives a nice 101: https://defence.gov.au/Environment/pfas/pfa

For anyone else who didn't have a clue what PFAS were, an Australian Department of Defence website gives a nice 101: https://defence.gov.au/Environment/pfas/pfas.asp https://defence.gov.au/Environment/pfas/pfas.asp Key points: > PFAS stands for per- and poly-fluoroalkyl substances > Legacy firefighting foams containing perfluorooctane sulfonate (PFOS) and perfluorooctanoic acid (PFOA) as active ingredients were once used extensively worldwide and within Australia, including at Defence bases, due to their effectiveness in fighting liquid fuel fires. > In 2004 Defence commenced phasing out its use of legacy firefighting foam containing PFOS and PFOA as active ingredients and transitioned to a more environmentally safe product. > The release of PFAS into the environment has become a concern, because we’ve learned these chemicals can persist in humans, animals and the environment.