How Big is my Hotspot? Lessons from Geostatistical Analysis of PFAS in Soils from AFFF Use
Tiana Robinson, Stantec Consulting Limited
The objective of this presentation is to show that when investigating airfields for PFAS contamination it is acceptable to assume a larger diameter hotspot than usual.
Partitioning and Storing PFAS – Considering Precursors and Supramolecular Assemblies in Unsaturated and Saturated Zones of Fire Training Areas
Ian Ross, Arcadis UK
The objective of this presentation is to describe self-assembly processes which cause fluorosurfactants to spontaneously bind to surfaces, meaning they can coat source zone lithology, potentially creating a long-term source of self-assembled PFAS. The impact of PFAS self-assembly on conceptual site model development and remediation of soil and water will be discussed.
Daniel Opdyke, Wen Ku, John Connolly, Sarah LaRoe, Jennifer Benaman Anchor QEA, LLP
The objective of this presentation is to provide insights to whether there exist certain conditions under which PFAS may constitute a sediment management concern, including due to the formation of PFAA from precursors. A corollary objective to is understand how ongoing remedial actions, e.g., for legacy contaminants, may, or may not, be addressing PFAS.