EPA recently issued its long-awaited rule designating perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS) as hazardous substances under the Comprehensive Environmental Response, Compensation and Liability Act (CERCLA). Along with the rule, EPA issued PFAS Enforcement Discretion and Settlement Policy Under CERCLA. This policy document provides the regulated community with some insight as to how