EPA Withdraws Direct and Final Rule Regarding Revised ASTM Phase 1 ESA Standard
Background The American Society for Testing and Materials (ASTM) revised its Standard for Environmental Site Assessment (ESA) to new Standard E1527-21 in November 2021. One of the significant revisions in ASTM E1527-21 is the inclusion of per- and polyfluoroalkyl substances [PFAS] and other emerging contaminants in the Standard for the first time. As described in
