Concerns about a per- and polyfluorinated substance (PFAS) is leading EPA to drop a third chemical from its Safer Chemical Ingredients List (SCIL) within six months, even as officials are also adding 22 new chemicals to the list, the source for the batch of 20 chemicals the Trump EPA deemed to be “low priority” for TSCA evaluation. The agency announced Aug. 11 that it has begun the process of removing the chemical from its SCIL, the list of chemicals, largely...