EPA Scientist Sees PFAS Class As ‘Sticky Question,’ Not ‘Defensible’

EPA researcher Justin Conley told North Carolina officials at a recent hearing that the complex nature of per- and polyfluoroalkyl substances (PFAS) makes the decision of whether to group them in a single class for regulation “a sticky question,” arguing that the broad restrictions are “likely a more protective approach” but not “necessarily defensible.” But Conley says it may be possible to group some PFAS into smaller sub-classes. His comments appear likely to raise the bar for environmentalists and others...