News & Analysis as of

Hazardous Substances Biden Administration

Williams Mullen

Is the Once in, Always in Policy Finally Dead?

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EPA’s controversial “Once in, always in, Rule” (Once in Rule) was recently rescinded under the Congressional Review Act, a statute which gives Congress the authority to overturn agency rules if such action is taken within...more

Allen Matkins

California Environmental Law & Policy Update 7.11.25

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The Trump administration will uphold a Biden-era ban on the ongoing use of asbestos after previously saying it would reconsider the rule. The rule requires companies to phase out their use of chrysotile asbestos, which is the...more

Farella Braun + Martel LLP

EPA Seeks a Fourth Abeyance to Reassess Its 2024 Designation of PFOA and PFOS as CERCLA Hazardous Substances

EPA has been granted a fourth abeyance of pending litigation related to the Biden administration’s designation of PFOA and PFOS as hazardous substances under CERCLA....more

Vinson & Elkins LLP

EPA Proposes to Repeal Biden-era Regulations Governing Air Toxic Emissions from Coal- and Oil-Fired Power Plants

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On June 17, 2025, the U.S. Environmental Protection Agency (“EPA”) published a proposed rule to repeal the amendments to the Mercury and Air Toxics Standards (“MATS”) adopted by the Biden administration in 2024. These...more

Allen Matkins

California Environmental Law & Policy Update 6.13.25

Allen Matkins on

The U.S. Environmental Protection Agency (EPA) moved this Wednesday to erase limits on greenhouse gases from power plants and to weaken restrictions on other hazardous power plant emissions, including mercury, arsenic, and...more

Farella Braun + Martel LLP

EPA Continues Reassessment of its 2024 Designation of PFOA and PFOS as CERCLA Hazardous Substances

The EPA is continuing to reevaluate whether to change its position regarding the Biden administration’s 2024 listing of PFOA and PFOS as hazardous substances under CERCLA....more

Fox Rothschild LLP

Observations Regarding EPA’s Recently Announced PFAS Plans

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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 rescind Biden-era PFAS rules...more

Greenberg Glusker LLP

EPA Announces Rollback of Biden-Era PFAS Rules

Greenberg Glusker LLP on

On May 14th, the U.S. Environmental Protection Agency (EPA) announced that it plans to delay or rescind PFAS (per- and polyfluoroalkyl substances) drinking water standards established by the Biden administration....more

Alston & Bird

EPA Announces Long-Awaited Actions to Address PFAS

Alston & Bird on

Our Environment, Land Use & Natural Resources Group breaks down the newly announced actions the Environmental Protection Agency (EPA) will take to address PFAS contamination....more

Morgan Lewis

US EPA Announces Ambitious PFAS Agenda

Morgan Lewis on

On April 28, 2025, US Environmental Protection Agency (EPA) Administrator Lee Zeldin announced ambitious plans to advance regulation of perfluoroalkyl and polyfluoroalkyl substances (PFAS). The plans include the near-term...more

Faegre Drinker Biddle & Reath LLP

EPA Just Laid Out Its PFAS Game Plan — And It Appears That PFAS Regulation Is Here to Stay

On April 28, Environmental Protection Agency (EPA) Administrator Lee Zeldin announced a long-anticipated suite of actions aimed at PFAS (per- and polyfluoroalkyl substances). Closely watched by stakeholders across industries,...more

Beveridge & Diamond PC

EPA Administrator Zeldin Announces EPA’s PFAS Plan

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On April 28, 2025, after much anticipation, U.S. Environmental Protection Agency (EPA) Administrator Lee Zeldin outlined the agency’s plans to address Per- and Polyfluoroalkyl Substances (PFAS). Although the announcement...more

Holland & Knight LLP

The PFAS Drinking Water Rule Under the Second Trump Administration

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Major trade associations and water systems filed suit to challenge the Biden-era U.S. Environmental Protection Agency's (EPA) National Primary Drinking Water Rule for six per- and polyfluoroalkyl substances (PFAS) under the...more

Pillsbury - PFAS Observer

EPA Signals Potential PFAS Policy Pivot Under New Administrator

In March, EPA Administrator Lee Zeldin addressed top state environmental officials, highlighting the Agency’s priorities for the year ahead. Without committing the EPA to an official stance, Zeldin reaffirmed his commitment...more

Allen Matkins

California Environmental Law & Policy Update 12.6.24

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The U.S. Environmental Protection Agency (EPA) on Wednesday issued a new regulation preventing per- and polyfluoroalkyl substances, commonly known as PFAS, from being approved through low volume exemptions — abridged reviews...more

Jones Day

Federal PFAS Reporting Deadline Extended as Biden Administration Announces New PFAS Strategic Plan

Jones Day on

The White House revealed its latest strategy to address PFAS, and the EPA extended the reporting deadline for its PFAS reporting rule....more

Allen Matkins

California Environmental Law & Policy Update 5.24.24

Allen Matkins on

Republican attorneys general from 20 U.S. states sued the Biden administration on Tuesday, seeking to block new reforms to the U.S. environmental review process for major projects such as transmission lines and wind and solar...more

Snell & Wilmer

EPA opens the Door to Widespread Liability to Businesses

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EPA’s listing of two “forever Chemicals” as CERCLA hazardous substances will re-open sites that companies had thought were closed. And every user of a product that contained them may become responsible for a share of the...more

Akerman LLP

EPA Establishes First-Ever Drinking Water Standards for PFAS (Forever Chemicals)

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On April 10, 2024, the Biden administration set the first-ever national drinking water standards for six per- and polyfluoroalkyl substances (PFAS) in drinking water. PFAS are a large class of thousands of synthetic...more

Nossaman LLP

Keeping America’s Water Safe to Drink – EPA Announces PFAS MCL

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On April 10, 2024, the U.S. Environmental Protection Agency (EPA) announced its final National Primary Drinking Water Regulation (NPDWR) for six per- and polyfluoroalkyl substances (PFAS). This regulation represents a key...more

Eversheds Sutherland (US) LLP

Not more than one (PFAS) drop per 5 olympic pools! EPA sets stage for turbulent patchwork of local PFAS regulations

In March 2023, the Administration took another major step in its strategic roadmap to combat and hold PFAS users accountable for PFAS contamination by proposing new rules establishing the first-ever national drinking water...more

(ACOEL) | American College of Environmental...

In Praise of Fuzzy Math

As we approach the two-year mark, there are plenty of unfinished items on the President’s to-do list. One in particular that tends to escape the limelight is of crucial importance to implementing Biden’s policy priorities,...more

BakerHostetler

EPA Designates PFOS and PFOA as Hazardous Substances

BakerHostetler on

On September 6, the United States Environmental Protection Agency (EPA) issued a notice of proposed rulemaking to designate perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS) as hazardous substances under...more

Harris Beach Murtha PLLC

As PFAS Litigation Swells, More Companies Must Consider Strategies for Class Defense; U.S. EPA Issues Health Advisory for PFAS

From mascara to microwave popcorn, and from water to wrappers, the glut of litigation related to the presence of PFAS (per- and polyfluoroalkyl substances) has forced companies and attorneys to pay attention to prospective...more

Nossaman LLP

EPA Announces No Safe Level for Two PFAS and $1 Billion in Funding

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On June 15, 2022, the U.S Environmental Protection Agency (EPA) announced new health advisories for four per- and polyfluoroalkyl substances (PFAS). The health advisories significantly lowered the level considered safe to...more

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