News & Analysis as of

Clean Air Act Environmental Protection Agency (EPA) National Ambient Air Quality Standards

Mitchell, Williams, Selig, Gates & Woodyard,...

Arkansas Ambient Air Monitoring Network: Annual Network Plan for 2024-2025

The Arkansas Department of Energy and Environment – Division of Environmental Quality (“DEQ”) submitted on July 1st to the United States Environmental Protection Agency (“EPA”) a document titled: Arkansas Ambient Air...more

Saul Ewing LLP

Supreme Court Temporarily Halts EPA’s “Good Neighbor” Air Pollution Rule

Saul Ewing LLP on

The Clean Air Act (“CAA”) envisions states and the federal government working together to improve air quality. Under the CAA, states must develop State Implementation Plans (“SIPs”) to implement National Ambient Air Quality...more

Morgan Lewis

US Supreme Court Grants Stay, Temporarily Blocks Implementation of EPA’s Good Neighbor Plan

Morgan Lewis on

The US Supreme Court issued on June 27, 2024 an opinion in Ohio v. EPA staying enforcement of the US Environmental Protection Agency’s (EPA’s) Federal Implementation Plan (FIP). The FIP sought to impose more stringent...more

Adams and Reese LLP

Supreme Court Halts EPA’s Good Neighbor Plan

Adams and Reese LLP on

In a 5-4 opinion on Thursday, the U.S. Supreme Court temporarily stayed the enforcement of the Environmental Protection Agency’s “Good Neighbor Plan” under the Clean Air Act. Under the Good Neighbor rule, the EPA required...more

Mitchell, Williams, Selig, Gates & Woodyard,...

Air Quality Standards Implementation Act of 2024: U.S. House of Representatives Passes Legislation Addressing NAAQS Development...

The United States House of Representatives passed by partisan vote legislation denominated H.R. 7650 that would amend the Clean Air Act titled: “Air Quality Standards Implementation Act of 2024” (“Act”). The Act...more

Mitchell, Williams, Selig, Gates & Woodyard,...

Start Up/Shut Down/Malfunction/Clean Air Act: U.S. Court of Appeals for the D.C. Circuit Addresses U.S. Environmental Protection...

The United States Court of Appeals for the D.C. Circuit (“Court”) addressed in a March 1st Opinion an issue addressing start up, shut down and malfunction (“SSM”) provisions. See Environmental Committee of the Florida...more

Jenner & Block

EPA Lowers the PM2.5 NAAQS

Jenner & Block on

On March 6, 2024, EPA published its final rule lowering the primary annual National Ambient Air Quality Standards (“NAAQS”) for fine particulate matter (“PM2.5”) to 9.0 micrograms per cubic meter (“µg/m3”). The new, more...more

Quarles & Brady LLP

Industry not Breathing Easier Following Issuance of New Air Quality Standards for Fine Particulate Matter

Quarles & Brady LLP on

On March 6, 2024, the United States Environmental Protection Agency (EPA) published in the Federal Register its long-awaited reconsideration of the National Ambient Air Quality Standard (NAAQS) for particulate matter (PM). In...more

Mitchell, Williams, Selig, Gates & Woodyard,...

Particulate Matter/Revised National Ambient Air Quality Standard: 24 State Attorneys General (including Arkansas) Challenge U.S....

Twenty-four State Attorneys General filed a Petition for Review (“Petition for Review”) in the United States Court of Appeals for the District of Columbia Circuit challenging a United States Environmental Protection Agency...more

Troutman Pepper

EPA Lowers Annual PM2.5 NAAQS, With Immediate Impacts for Air Permitting

Troutman Pepper on

Exercising one of its most important and far-reaching powers under the Clean Air Act, the Environmental Protection Agency (EPA) has lowered the primary annual National Ambient Air Quality Standard (NAAQS) for fine particulate...more

Robinson+Cole Environmental Law +

EPA Lowers the Fine Particulate NAAQS: A Closer Look at Implementation and Potential Impacts

On February 7, 2024, the U.S. Environmental Protection Agency (EPA) released its Final Rule lowering the primary annual National Ambient Air Quality Standard (NAAQS) for fine particulate matter (PM 2.5) from the current level...more

Ballard Spahr LLP

EPA Proposes to Extend Air Transport Rule to Five More States

Ballard Spahr LLP on

The Environmental Protection Agency (EPA) intends to require power plants and other stationary sources in five additional states to comply with the Good Neighbor Plan to ensure that these states do not unlawfully contribute...more

King & Spalding

Key Recent Developments In Environmental Justice Litigation

King & Spalding on

Louisiana remains at the forefront of environmental justice activity. In just four days from January 19 to January 23, 2024, two courts in Louisiana offered interpretations to environmental justice efforts in the State of...more

Mitchell, Williams, Selig, Gates & Woodyard,...

Particulate Matter/Clean Air Act National Ambient Air Quality Standard: U.S. Environmental Protection Agency Final Rule Tightening...

The United States Environmental Protection Agency (“EPA”) announced today a final rule which will tighten the National Ambient Air Quality Standards (“NAAQS”) for fine particulate matter. EPA previously: - Stated on June 10,...more

Foley Hoag LLP - Environmental Law

EPA Lowers the PM2.5 NAAQS: Goldilocks Can Sleep Soundly

On February 7, 2024, EPA finalized a rule lowering the primary annual National Ambient Air Quality Standard for PM2.5 to 9.00 ug/m3.  This is a significant reduction from the current 12.00 ug/m3 standard and a victory for...more

Goldberg Segalla

Supreme Court Agrees to Hear Challenges to the EPA “Good Neighbor Plan”

Goldberg Segalla on

The Environmental Protection Agency, under the Clean Air Act, requires states to work with the EPA to address the interstate transport of air pollution. Under the “Good Neighbor Plan,” the EPA requires each state to implement...more

Mitchell, Williams, Selig, Gates & Woodyard,...

EPA's Proposed Air Quality Standards Will Cause Permitting Gridlock Across Our Economy: U.S. Chamber of Commerce Report Addressing...

The United States Chamber of Commerce (“Chamber”) issued a November 2023 report titled: EPA’s Proposed Air Quality Standards Will Cause Permitting Gridlock Across Our Economy (“Report”)...more

Foley Hoag LLP - Environmental Law

Another Study Regarding the Health Impacts of PM Emissions From Power Plants: What Impact Will It Have On Regulation and...

An article in Science published last week indicates that the mortality risk from exposure to PM2.5 from coal-fired electric generating units is roughly twice as high as the risk posed by PM2.5 from other sources.  According...more

Mitchell, Williams, Selig, Gates & Woodyard,...

Particulate Matter/Clean Air Act NAAQS: 70 Trade Organizations' Letter to the White House Requesting Retention of Current Standard

Seventy trade groups sent an October 31st letter to Mr. Jeffrey Zients who serves as Chief of Staff in the White House addressing the Clean Air Act National Ambient Air Quality Standard (“NAAQS”) for fine particulate matter...more

Williams Mullen

Recap from the Trenches: Reactions to EPA’s 2023 Big Air Agenda

Williams Mullen on

The first three quarters of 2023 have seen an unprecedented number of rulemakings under the Clean Air Act. The Biden administration has released a new suite of proposed rulemakings with a particular focus on climate change...more

Mitchell, Williams, Selig, Gates & Woodyard,...

State Implementation Plan/Clean Air Act: Federal Appellate Court Addresses Challenge to Colorado Exclusion of Temporary Emissions

The Tenth Circuit United States Court of Appeals (“Court”) addressed in a September 18th Opinion a petition filed by the Center for Biological Diversity (“Center”) alleging that the U.S. Environmental Protection Agency...more

Mitchell, Williams, Selig, Gates & Woodyard,...

Ozone/Clean Air Act: U.S. Environmental Protection Agency Announces New Review of National Ambient Air Quality Standard

The United States Environmental Protection Agency (“EPA”) announced it is initiating a new review of the Ozone National Ambient Air Quality Standard (“NAAQS”). EPA states it is taking this action based on advice provided...more

Foley Hoag LLP - Environmental Law

The EJ Movement Wants to Tighten the NAAQS. Will It Happen?

The White House Environmental Justice Advisory Council recently weighed in on EPA’s decision whether to lower the National Ambient Air Quality Standards for PM2.5 and ozone. Specifically, with respect to PM2.5, WHEJAC...more

Mitchell, Williams, Selig, Gates & Woodyard,...

Arkansas State Implementation Plan Revisions/Clean Air Act: U.S. Environmental Protection Agency Proposed Rule Addressing Startup,...

The United States Environmental Protection Agency (“EPA”) published a July 21st Federal Register Notice proposing to approve two revisions to the Clean Air Act Arkansas State Implementation Plan (“SIP”). See 88 Fed. Reg....more

Foley Hoag LLP - Environmental Law

What Happens When the EPA Technical Staff Disagrees with the Clean Air Science Advisory Committee?

Last week, the EPA Clean Air Science Advisory Committee provided EPA its review of EPA’s Policy Assessment for the Reconsideration of the National Ambient Air Quality Standard for ozone. As expected, CASAC has disagreed with...more

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