The team is determining the movement and behavior of per- and poly-fluoroalkyl substances (PFAS) from their sources in the environment, as they move through exposure pathways in ecosystems including watersheds and aquifers, their incorporation into food webs, and molecular to population scale effects on fish and wildlife. These studies are accomplished at a variety of spatial scales from regional to site-based locations and include field sampling and laboratory studies. Laboratory studies are coordinated with field studies to better understand factors influencing PFAS behavior and hazards in the environment.