PFHxS
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How Low Did U.S. EPA Go–U.S. EPA Issues Its Long-Awaited Draft PFAS Drinking Water Standards
Almost two years to the date after U.S. EPA issued its regulatory determination for contaminants on the forth Contaminant Candidate List, U.S. EPA has issued its draft rule setting drinking water limits for several PFAS compounds. Specifically. U.S. EPA’s draft rule proposes a four part per trillion (ppt) maximum contaminant level (MCL) for perfluorooctanoic acid (PFOA)… Continue reading
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U.S. EPA Updates Regional Screening Levels to Add Five New PFAS Chemicals
On May 18, 2022, U.S. EPA updated its Regional Screening Level tables to include five new per- and polyfluoroalkyl substances (PFAS). The five new PFAS compounds added to the RSL tables are hexafluoropropylene oxide dimer acid and its ammonium salt (HFPO-DA – sometimes referred to as GenX chemicals), perfluorooctanesulfonic acid (PFOS), perfluorooctanoic acid (PFOA), perfluorononanoic… Continue reading
CERCLA, Climate Change, Contamination, Emerging Contaminants, Groundwater, RCRA, Sustainability, WaterAgency for Toxic Substances and Disease, ammonium salt, CERCLA, Contamination, Corporate Environmental Lawyer, EPA, GenX chemicals, hexafluoropropylene oxide dimer acid, HFPO-DA, industrial soil, Jenner & Block, perfluorononanoic acid, perfluorooctanesulfonic acid, perfluorooctanoic acid, PFAS, PFHxS, PFNA, PFOA, PFOS, Polyfluoroalkyl, RCRA, Regional Screening Level, remediation, RSL, Steven M. Siros, tap water