6.1 Managing PFAS in Stormwater

Management of PFAS can be challenging as sources, pathways and release mechanisms of PFAS are not all well understood. Compounded with the lack of criteria for some environmental media, such as stormwater, management of may require efforts beyond those sufficient for other sites. This presentation will describe a case study of an industrial facility that spray-applied fluoropolymer coatings onto medical devices for over 40 years. Stormwater runoff from the facility roof was identified as one of the sources of PFAS in the soil and groundwater at the facility. The case study will discuss comprehensive source identification approach, development of a stormwater threshold, and mitigation of PFAS in stormwater.