EPA Struggling To Craft PFAS Monitoring Methods For Future Air Rules

As environmentalists seek federal air regulation of per- and polyfluoroalkyl substances (PFAS) and some states forge their own standards, EPA is struggling to develop methods to detect and measure the chemicals in ambient air that could eventually serve as the basis for new rules, agency officials say. But the agency’s task is difficult and EPA is not yet ready to regulate air emissions of PFAS, given myriad sources, many thousands of different chemical compounds within the PFAS class, and few...