Birnbaum Says PFAS Petition Clash Shows Need For Unified Definition

The former director of the National Institute of Environmental Health Sciences (NIEHS) says EPA’s lack of a consistent definition for per- and polyfluoroalkyl substances (PFAS) is already frustrating its efforts to address them, including in the agency’s controversial response to a TSCA petition seeking toxicity tests on 54 of the chemicals. Linda Birnbaum, a former EPA scientist who led NIEHS and its National Toxicology Program until her retirement in 2019, told Inside TSCA in an exclusive Jan. 13 interview...