The U.S. Environmental Protection Agency (EPA) Office of Inspector General (OIG) announced on March 7, 2023, that EPA did not follow the typical intra-agency review and clearance process during the development and publication of the January 2021 perfluorobutane sulfonic acid (PFBS) toxicity assessment. OIG conducted its evaluation to determine whether EPA followed applicable policies and procedures to develop and publish the PFBS toxicity assessment. OIG notes that two weeks after...
