On June 28, 2024, in its decision in Loper Bright Enterprises, et al. v. Raimondo, et al., the U.S. Supreme Court held that its longstanding precedent granting deference to
Continue Reading The Impact of Chevron’s Demise on the Regulation of PFASMCLs
Federal Drinking Water Standards for PFAS Will Influence Groundwater Remediation Standards
As discussed in a previous post, EPA recently issued a final rule establishing drinking water standards, known as maximum contaminant levels (MCLs), for six per- and polyfluoroalkyl substances (PFAS). …
Continue Reading Federal Drinking Water Standards for PFAS Will Influence Groundwater Remediation StandardsEPA Issues Final MCLs for PFOA, PFOS, PFNA, GenX, PFHxS, and PFBS
On April 8, 2024, the EPA Administrator signed the final rule establishing drinking water standards, also known as MCLs, for six PFAS (PFOA, PFOS, PFNA, GenX (HFPO-DA), PFHxS, and PFBS). …
Continue Reading EPA Issues Final MCLs for PFOA, PFOS, PFNA, GenX, PFHxS, and PFBSPADEP Proposes Key PFAS Amendments to Act 2 Regulations
On March 12, 2024, the Pennsylvania Environmental Quality Board (EQB) approved the Pennsylvania Department of Environmental Protection’s (PADEP) proposal to amend the Land Recycling and Remediation Standards Act regulations…
Continue Reading PADEP Proposes Key PFAS Amendments to Act 2 RegulationsEPA Receives Thousands of Comments On its Proposed PFAS Maximum Contaminant Levels
As discussed in a previous post, the United States Environmental Protection Agency (EPA) proposed a National Primary Drinking Water Regulation to establish maximum contaminant levels for six different PFAS…
Continue Reading EPA Receives Thousands of Comments On its Proposed PFAS Maximum Contaminant LevelsEPA Receives Extensive Comments on its Proposed PFAS MCLs
On May 30, 2023, the comment period closed on EPA’s proposed maximum contaminant levels (“MCLs”) for six PFAS at which time EPA had received 97,793 comments. Under the proposed…
Continue Reading EPA Receives Extensive Comments on its Proposed PFAS MCLsEPA Proposes Maximum Contaminant Levels for Six PFAS Compounds
On March 14, 2023, the United States Environmental Protection Agency (EPA) announced the proposed National Primary Drinking Water Regulation (NPDWR) for six PFAS. The public comment period will be open…
Continue Reading EPA Proposes Maximum Contaminant Levels for Six PFAS CompoundsEPA Announces $75 Million to Pennsylvania to Address PFAS/Emerging Contaminants and Proposed PFOA and PFOS Drinking Water Standards Expected in Weeks
On February 14, 2023, the U.S. Environmental Protection Agency (“EPA”) announced $75 million in funding under the Infrastructure Law to go to Pennsylvania to address PFAS and other emerging contaminants…
Continue Reading EPA Announces $75 Million to Pennsylvania to Address PFAS/Emerging Contaminants and Proposed PFOA and PFOS Drinking Water Standards Expected in WeeksPennsylvania’s PFOA and PFOS Maximum Contaminant Level Rule is Now Final and Effective
Pennsylvania’s new “Safe Drinking Water PFAS MCL Rule” became effective on January 14, 2023, upon the publication of the new regulations in the Pennsylvania Bulletin. As discussed in a…
Continue Reading Pennsylvania’s PFOA and PFOS Maximum Contaminant Level Rule is Now Final and EffectiveMichigan Court Rules State PFAS Drinking Water Regulations Lacked Adequate Consideration of Costs, with Implications for Challenges to Federal PFAS Rulemakings
On November 15, 2022, in response to a challenge by 3M, the Michigan Court of Claims invalidated the drinking water MCLs and attendant groundwater standards for several PFAS substances, including…
Continue Reading Michigan Court Rules State PFAS Drinking Water Regulations Lacked Adequate Consideration of Costs, with Implications for Challenges to Federal PFAS Rulemakings