On November 16, the Pennsylvania Environmental Quality Board (“EQB”) voted to approve the Pennsylvania Department of Environmental Protection’s (“PADEP”) proposed rule to set binding regulatory standards, known as maximum contaminant limits (“MCLs”) for PFOA and PFOS in drinking water.  As discussed in an earlier post, the proposed rule would set those limits at 14

New Pennsylvania Department of Environmental of Protection (“PADEP”) regulations that include new cleanup standards for three per- and polyfluoroalkyl substances (PFAS) were published in the Pennsylvania Bulletin on Saturday, November 20, 2021, and are now effective and available for remediation under the Pennsylvania Land Recycling and Environmental Remediation Standards Act (“Act 2”).

We have discussed

This past August, EPA published Draft Method 1633 – Analysis of Per- and Polyfluoroalkyl Substances (“PFAS”) in Aqueous, Solid, Biosolids, and Tissue Samples by LC-MS/MS.  Once, finalized, this single laboratory validated method will be available for 40 PFAS compounds (including Perfluorooctanesulfonic acid (PFOS), Perfluorononanoic acid (PFNA), Perfluorooctanoic acid (PFOA), and Perfluorobutanesulfonic acid (PFBS)) in

On September 23, 2021, the Pennsylvania Independent Regulatory Review Commission (IRRC) approved a final form rulemaking that revises the Pennsylvania Department of Environmental Protection’s (PADEP) regulations that implement that Land Recycling and Environmental Remediation Standards Act (Act 2).

As we discussed in a previous post, this regulatory revision includes the following new groundwater

The process to revise regulations in Pennsylvania is often long and involved, and the Pennsylvania Department of Environmental Protection’s (PADEP) revision to its Act 2 Chapter 250 regulations to incorporate cleanup standards for three per- and polyfluoroalkyl substances (PFAS) has proved to be no exception.  PADEP first published its regulatory proposal in the Pennsylvania Bulletin

On March 24, 2021, the Pennsylvania Department of Environmental Protection (PADEP) announced that it issued an National Pollutant Discharge Elimination System (NPDES) permit to the Biddle Air National Guard Base (ANGB) (formerly the Horsham Air Guard Station) containing discharge limits of 70 parts per trillion (ppt) for the combined concentration of perfluorooctanoic acid (PFOA)

The march toward regulation of PFAS in Pennsylvania continues (see our recent post on statewide public water system sampling results), with the release of final data from sampling conducted in September 2019 of surface waters throughout the Commonwealth.  The study, a collaboration among the U.S. Geological Service (“USGS”), the Susquehanna River Basin Commission, and

The California Office of Environmental Health Hazard Assessment (OEHHA) is expanding its review of potential substances to add to its Proposition 65 list of chemicals that cause cancer.

Earlier this year, the state announced it intended to add perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS) to the list. After the public comment periods ended for

In the March 3, 2021 Federal Register, EPA issued its final regulatory determinations for substances on the fourth Drinking Water Contaminant Candidate List (“CCL 4”). Under the federal Safe Drinking Water Act, EPA is required to publish a list every five years of chemicals that are known or suspected to be found in public drinking

The Biden Administration has pledged to designate certain PFAS as hazardous substances under federal law. What effect would the United States Environmental Protection Agency’s (EPA) designation of PFOA and PFOS as “hazardous substances” under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) have on the legal landscape? As you may recall, in a previous