Properties of PFAS
Because per- and polyfluoroalkyl substances (PFAS) are complex molecules that can enter surface waters through runoff, direct discharge (e.g., aqueous film forming foam [AFFF]), aerial deposition and groundwater migration, a thorough understanding of both PFAS and surface water hydrology is critical to best assess potential impacts to sediments.
The PFAS Cycle |
PFAS tend to sorb to sediment particles and organic matter, which settle at the bottom of a waterbody, creating a reservoir of PFAS that can cycle in the environment for decades. |