Charles J. Dennen
Partner
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News & Insights
04.11.2024
Client Advisories
USEPA Announces Final National Primary Drinking Water Regulation for PFAS Compounds
On April 10, 2024, the United States Environmental Protection Agency (USEPA) announced the final National Primary Drinking Water Regulation (NPDWR) to establish legally-enforceable Maximum Contaminant Levels (MCLs) for certain per- and polyfluoroalkyl substances (PFAS) in drinking water. The individual compounds covered by the proposed regulation are: perfluorooctanoic acid (PFOA), perfluorooctane sulfonic acid (PFOS), perfluorononanoic acid (PFNA), hexafluoropropylene oxide dimer acid (HFPO-DA, sometimes referred to as “GenX” compounds), and perfluorohexane sulfonic acid (PFHxS). Additionally, the final rule covers PFAS mixtures containing at least two or more of PFHxS, PFNA, HFPO-DA, and perfluorobutane sulfonic acid (PFBS) using a Hazard Index MCL to account for the combined and co-occurring levels of these PFAS in drinking water.
01.08.2024
Articles
New Interior Department Rule Proposes Increase in Cost to Acquire and Maintain Federal Oil and Gas Leases
Archer attorneys Charles Dennen and Thomas Tyrrell co-authored The Legal Intelligencer article, “New Interior Department Rule Proposes Increase in Cost to Acquire and Maintain Federal Oil and Gas Leases,” writing about a new bill that will aim to modernize federal oil and gas leasing regulations. These regulations have not been significantly modified since 1988, and this new rule comes amid increased scrutiny over whether existing regulations are outdated and no longer protective of the federal government's fiscal interests.
11.06.2023
Articles
PFAS Rule Risks Vulnerability If High Court Trims Agency Power
Archer attorneys David Edelstein and Charles Dennen co-authored the Bloomberg Law article, “PFAS Rule Risks Vulnerability If High Court Trims Agency Power,” where they write about the complications for companies subject to the EPA's new reporting rules, both in terms of scope and an uncertain legal landscape.
Compliance will be expensive, time-consuming, and will pose challenges to the regulated community. Companies should begin the process now to determine whether and/or to what extent reporting is required.
To read the complete article, click here.