On August 18, 2026, the U.S. Court of Appeals for the D.C. Circuit issued its decision in Chamber of Commerce of the United States of America v. EPA, denying all
Continue Reading D.C. Circuit Upholds EPA Designation of PFOA and PFOS as CERCLA Hazardous SubstancesAaron Mapes
EPA Issues Series of Press Releases Regarding PFAS Initiatives
By Aaron Mapes on
Last month, EPA issued a press release outlining its “comprehensive PFAS strategy,” followed by a series of press releases announcing grant funding to over 40 states and territories for…
Continue Reading EPA Issues Series of Press Releases Regarding PFAS InitiativesBiosolids and PFAS: A Regulatory Patchwork
By Aaron Mapes & Fiona Burke on
Biosolids are treated waste solids generated from sewage sludge that have been processed so that they can be applied to land as a fertilizer. Advocates of biosolid use point to…
Continue Reading Biosolids and PFAS: A Regulatory PatchworkA Year Later, How is PFAS Being Addressed in Phase I ESAs?
By Aaron Mapes on
It has now been over a year since PFOA and PFOS – two types of PFAS – were designated as hazardous substances under CERCLA, the federal Superfund law. Among…
Continue Reading A Year Later, How is PFAS Being Addressed in Phase I ESAs?Observations Regarding EPA’s Recently Announced PFAS Plans
By Aaron Mapes on
EPA Administrator Lee Zeldin recently issued a press release that “Announces Major EPA Actions to Combat PFAS Contamination.” As we generally expected, the announcement did not include plans to…
Continue Reading Observations Regarding EPA’s Recently Announced PFAS PlansReading Tea Leaves Regarding EPA’s PFAS Agenda Under Administrator Zeldin
By Aaron Mapes on
One month into the tenure of new EPA administrator Lee Zeldin, EPA’s initiatives regarding PFAS remain unclear. A read of the tea leaves from Zeldin’s confirmation hearing and the…
Continue Reading Reading Tea Leaves Regarding EPA’s PFAS Agenda Under Administrator ZeldinPENNVEST Awards $28M of PFAS Funding, Bringing Total to $95M
By Aaron Mapes on
PENNVEST Awards $28M of PFAS Funding, Bringing Total to $95M
On January 22, 2025, the Pennsylvania Infrastructure Investment Authority (PENNVEST) announced funding awards totaling $288.2M for 39 drinking water…
Continue Reading PENNVEST Awards $28M of PFAS Funding, Bringing Total to $95MPFOA and PFOS Are Now CERCLA Hazardous Substances
By Aaron Mapes & Karen H. Davis on
As we have previously reported here and here, EPA has designated perfluorooctanoic acid (“PFOA”) and perfluorooctanesulfonic acid (“PFOS”) as hazardous substances under the Comprehensive Environmental Response, Compensation, and Liability…
Continue Reading PFOA and PFOS Are Now CERCLA Hazardous SubstancesFederal Drinking Water Standards for PFAS Will Influence Groundwater Remediation Standards
By Aaron Mapes & Collin Crecco on
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 StandardsRecent Progress Report Issued by EPA Foreshadows Landmark Year for Federal Regulation of PFAS
By Aaron Mapes on
Soon after the Biden Administration took office, the United States Environmental Protection Agency (“EPA”) issued a Strategic Roadmap highlighting the many ways it planned to “research, restrict, and remediate” per-and…
Continue Reading Recent Progress Report Issued by EPA Foreshadows Landmark Year for Federal Regulation of PFAS