Summary of the conference : Perfluoroalkyl and polyfluoroalkyl substances (PFAS) are a major class of contaminants of emerging concerns (CECs) that are widely found in humans, wildlife, and the environment. The most severe form of PFAS pollution is primarily associated with common practices of uncontrolled releases of PFAS-based aqueous film-forming foams (AFFFs) used for firefighting activities. Designed to be chemically