News & Analysis as of

Trump Administration Air Pollution

Williams Mullen

Is the Once in, Always in Policy Finally Dead?

Williams Mullen on

EPA’s controversial “Once in, always in, Rule” (Once in Rule) was recently rescinded under the Congressional Review Act, a statute which gives Congress the authority to overturn agency rules if such action is taken within...more

Haynes Boone

EPA Proposes Repeal of Legal Foundation for Greenhouse Gas Rules

Haynes Boone on

The U.S. Environmental Protection Agency (EPA) has proposed a major shift in regulatory policy—to rescind the agency’s 2009 “Endangerment Finding” and to repeal all resulting emission standards for new motor vehicles and...more

Akin Gump Strauss Hauer & Feld LLP

Regulatory Relief for Certain Stationary Sources to Promote American Security with Respect to Sterile Medical Equipment (Trump EO...

This proclamation addresses the EPA’s April 5, 2024 final rule, National Emission Standards for Hazardous Air Pollutants: Ethylene Oxide Emissions Standards for Sterilization Facilities Residual Risk and Technology Review, 89...more

Jones Day

EPA Proposes Repeal of 2024 Mercury and Air Toxics Standards Amendments

Jones Day on

On June 11, 2025, the U.S. Environmental Protection Agency ("EPA") announced a proposed rule to repeal key amendments to the 2024 Mercury and Air Toxics Standards ("MATS") for coal- and oil-fired electric utility steam...more

Vinson & Elkins LLP

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

Vinson & Elkins LLP on

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

Akin Gump Strauss Hauer & Feld LLP

Regulatory Relief for Certain Stationary Sources to Promote American Energy (Trump EO Tracker)

Grants a two-year exemption from the EPA's updated Mercury and Air Toxics Standards (MATS) rule for certain stationary sources, citing the lack of commercially viable emissions-control technology needed to meet the rule’s...more

McGlinchey Stafford

Trump Announces Presidential Exemptions Under Clean Air Act

McGlinchey Stafford on

In an unprecedented move, the Trump administration established an electronic mailbox to allow the regulated community to request a Presidential Exemption to certain requirements of the Clean Air Act (CAA). Under Section...more

Mintz - ML Strategies

Potential Fallout if Endangerment Finding Is Rescinded

Mintz - ML Strategies on

On March 13, the Environmental Protection Agency (EPA) announced it would move forward with reconsideration of the Greenhouse Gas Endangerment Finding (Endangerment Finding) as directed in President Trump’s Executive Order...more

Allen Matkins

California Environmental Law & Policy Update 11.8.24

Allen Matkins on

In the last four years, California has adopted some of the nation’s most innovative air regulations, including a ban on new gasoline-powered car sales by 2035 and a prohibition against diesel-fueled trucks visiting state...more

Foley Hoag LLP - Environmental Law

It’s Still (Again) Necessary and Appropriate to Regulate Air Toxics From Power Plants

EPA has proposed to revoke the Trump administration finding in 2020 that it is not appropriate and necessary to regulate emissions of air toxics from coal- and oil-fired electric generating units.  Instead, EPA proposes to...more

Williams Mullen

Environmental Notes - July 2021

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Can you still build a bulkhead along the shoreline in coastal Virginia to protect your property? Well, it depends, but now the answer is more likely to be “no.” Major changes to how Virginia tidal waterfront property owners...more

(ACOEL) | American College of Environmental...

There’s a First Time for Everything

Anyone with even a passing interest in environmental law has seen numerous articles over the past four years noting the Trump administration’s efforts to roll back this or that environmental regulation. ACOEL’s blog contains...more

Foley Hoag LLP - Environmental Law

EPA Finalizes Decision to Retain the Existing PM2.5 NAAQS — Single Worst Environmental Decision of the Trump Administration?

Yesterday, EPA finalized its decision to retain the existing PM2.5 NAAQS of 12 ug/m3, rejecting substantial scientific evidence that PM2.5 causes significant harm at concentrations below 12 ug/m3. In fact, as noted in one of...more

Allen Matkins

California Environmental Law & Policy Update - October 2020 #3

Allen Matkins on

President Trump makes agricultural water demands priority for new office - U.S. News & World Report – October 13 - President Donald Trump this Tuesday created what he called a “subcabinet” for federal water issues,...more

Akin Gump Strauss Hauer & Feld LLP

Biden’s Climate Catch Up, or Trump’s Regulatory Rollbacks? Key Environmental and Energy Considerations for the 2020 Elections

- It is apparent that former Vice President Joe Biden’s “clean energy revolution” and climate goals stand in stark contrast with the policies the Trump Administration has pursued during its first term, underscoring the...more

Spilman Thomas & Battle, PLLC

Currents - Energy Industry Insights: Issue 35, September 2020

U.S. Shale Producers Race for Federal Permits Ahead of Presidential Election - "Federal permitting in the largest U.S. oilfield in the Permian Basin, located in Texas and New Mexico, is up 80 percent in about the last three...more

Allen Matkins

California Environmental Law & Policy Update - June 2020 #4

Allen Matkins on

Bayer to pay more than $10B to resolve lawsuits over Roundup, PCBs, and Dicamba - Bullet NPR – June 24 - Bayer will pay more than $10 billion to end tens of thousands of lawsuits filed over its Roundup weedkiller, the...more

(ACOEL) | American College of Environmental...

EPA’s War on Science

Since its creation under President Nixon five decades ago, EPA has, for the most part, been an independent agency utilizing the best science available, even where the science led it to policy results contrary to the...more

Allen Matkins

California Environmental Law & Policy Update - February 2020 #3

Allen Matkins on

California sues Trump administration to block water rules - Bullet ABC News – February 20 - California sued the Trump administration on Thursday to block new rules finalized this week that would let farmers take more...more

Williams Mullen

Virginia Breaking Blue: Spotlight on Air Issues

Williams Mullen on

In November, Democrats won control of the House of Delegates and kept control over the Commonwealth’s Senate. Now, Democrats control both the Executive and Legislative branches of government in the Commonwealth of Virginia....more

(ACOEL) | American College of Environmental...

When is risk reduction not a benefit?

EPA filed a status report on October 15 in the slow-moving mercury and air toxics (MATS) litigation, which is now Murray Energy Corp. v. EPA, No. 16-1127 (D.C. Cir., filed April 26, 2016). The case is a challenge to EPA...more

Robins Kaplan LLP

Financial Daily Dose 1.7.2020 | Top Story: Facebook Ban of “Deepfakes”

Robins Kaplan LLP on

Facebook wages a war on misinformation. On Monday, Facebook announced it will start removing videos altered by artificial intelligence that are likely to mislead people into thinking that a subject of the video made...more

Foley Hoag LLP - Environmental Law

Particulate Matter Has Not Clouded My Crystal Ball

Last month, I noted that EPA’s Office of Air Quality Planning and Standards had released a draft reassessment of the particulate matter NAAQS. In a bold moment of speculation, I indicated that it would be difficult for EPA to...more

Patrick Malone & Associates P.C. | DC Injury...

Administration actions give us all plenty of reasons to not breathe easy

Even as investigations deepened into the harms caused by vaping and e-cigarettes, the Trump Administration confounded those concerned with public health and the environment with rollbacks of legal ways to get vehicles to be...more

Sheppard Mullin Richter & Hampton LLP

Politics Trumps Economics? Trump’s Revocation of California’s Waiver Under the Clean Air Act

Yesterday President Trump announced on Twitter that the U.S. was revoking California’s waiver under the Clean Air Act (CAA) which allowed it to impose stricter tailpipe emission standards than the federal ones. California’s...more

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