News & Analysis as of

National Ambient Air Quality Standards Air Pollution Ozone

Goldberg Segalla

SCOTUS Poised to Shove Thy Neighbor on EPA Law

Goldberg Segalla on

In March 2023, the EPA issued its final Good Neighbor Plan, the last in a series of legislations designed to reduce emissions of ozone-forming nitrogen oxide (NO2) which cross state borders. Specifically, the Plan was...more

Troutman Pepper

Air and Climate Report: January 2024

Troutman Pepper on

PM NAAQS: Already behind schedule is perhaps the mostly widely impactful rule change EPA has proposed in many years: a lowering of the national ambient air quality standard (NAAQS) for fine particulate matter (PM2.5). EPA has...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

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

U.S. Environmental Protection Agency Clean Air Scientific Advisory Committee: Ozone National Ambient Air Quality Standards...

The United States Environmental Protection Agency (“EPA”) Clean Air Scientific Advisory Committee (“CASAC”) transmitted a June 9th letter to Administrator Michael S. Regan addressing: CASAC Review of the EPA’s Policy...more

Foley Hoag LLP - Environmental Law

Deja Vu One More Time? What Will Happen If EPA Ignores CASAC Regarding the Ozone NAAQS?

Last week, Inside EPA (subscription required) reported that the Clean Air Science Advisory Committee has pretty much agreed that the National Ambient Air Quality Standards for ozone must be made more stringent. Apparently,...more

Foley Hoag LLP - Environmental Law

It’s More Important for EPA to Ensure that States Are Good Neighbors Than That They are Perfect Neighbors

Last week, D.C. Circuit Court of Appeals rejected challenges to EPA’s “Revised Cross-State Air Pollution Update Rule”. The Court found that the Rule was “an appropriate exercise of EPA’s statutory authority”....more

Foley Hoag LLP - Environmental Law

Have I Mentioned that PM2.5 Is Bad For You?

The evidence of the harm resulting from PM2.5 exposures keeps rolling in. Earlier this month, Environmental Research published an article titled “Global mortality from outdoor fine particle pollution generated by fossil fuel...more

Smith Gambrell Russell

Environmental Groups File Suit to Overturn “Do Nothing” (Ozone Standards)

Smith Gambrell Russell on

Environmental groups have sued the EPA to overturn its December 31st rule retaining Obama Era National Ambient Air Quality Standards (NAAQS) for ozone.  The suit alleges that the Trump EPA ignored science and mounting...more

Brownstein Hyatt Farber Schreck

D.C. Circuit Vacates Portions of EPA’s 2018 Ozone Implementation Rule

On Friday Jan. 29, 2021, the United States Court of Appeals for the D.C. Circuit in Sierra Club v. EPA, Case No. 15-1465, struck down several provisions in EPA’s 2018 rule implementing the 2008 National Ambient Air Quality...more

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

Ozone/Clean Air Act: U.S. Environmental Protection Agency Final Rule Retaining Current National Ambient Air Quality Standard

The United States Environmental Protection Agency (“EPA”) issued a final rule retaining the current National Ambient Air Quality Standard (“NAAQS”). This leaves in place the ozone NAAQS that was promulgated during the...more

Foley Hoag LLP - Environmental Law

EPA’s Ozone NAAQS Decision — Perhaps the Statute Itself Deserves Some of the Blame

On December 23, 2020, EPA formalized its decision to leave the ozone NAAQS unchanged, at 70 ppb. I don’t think that this decision is in the same category of egregiousness as EPA’s recent decision not to reduce the PM2.5...more

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

Interstate Ozone/Environmental Groups Citizen Suit Notice to U.S. Environmental Protection Agency: Arkansas Is One of Twenty...

A coalition of environmental groups represented by Earthjustice put the United States Environmental Protection Agency (EPA) on notice they intend to file a Clean Air Act citizen suit action over the agency’s alleged failure...more

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

Ozone Season Summary: Arkansas Department of Energy and Environment (Division of Environmental Quality) Announces 2019 Results

The Arkansas Department of Energy and Environment – Division of Environmental Quality (“DEQ”) issued a draft report titled: Ozone Season Summary 2019 (“Report”) - The Report provides the results of DEQ sampling during...more

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

Particulate Matter (PM) Standards: Scientific Advisory Committee Rejects Draft U.S. Environmental Protection Agency Staff Proposal...

The United States Environmental Protection Agency (“EPA”) Clean Air Scientific Air Committee (“CASAC”) has memorialized its disagreement with the a key recommendation of an EPA staff draft policy assessment for a Clean Air...more

Foley Hoag LLP - Environmental Law

The Other Shoe Drops on Upwind Ozone States

On Tuesday, the District of Columbia Court of Appeals vacated EPA’s “Close-Out Rule,” which basically concluded that upwind states contributing to exceedances of the National Ambient Air Quality Standard for ozone in downwind...more

Akin Gump Strauss Hauer & Feld LLP

EPA Memo Outlines Plan for Altering Review Process of Existing Air Quality Regulations

On May 9, 2018, Environmental Protection Agency (EPA) Administrator Scott Pruitt issued a memorandum outlining a “back-to-basics” process for reviewing National Ambient Air Quality Standards (NAAQS) for criteria...more

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

2015 Ground-Level Ozone National Ambient Air Quality Standards: Arkansas Department of Environmental Quality Notes State-Wide...

The Arkansas Department of Environmental Quality announced that the United States Environmental Protection Agency (“EPA”) has stated that Arkansas is in attainment state-wide with the 2015 Ground-Level National Ambient Air...more

Snell & Wilmer

Seven Months into the Trump Administration, Outlook of Controversial Obama-Era Ozone Standard Remains Hazy

Snell & Wilmer on

The status of a controversial rule establishing more stringent ambient air quality standards for ozone—promulgated by former President Barack Obama’s Environmental Protection Agency (EPA)—remains unclear following a series of...more

Best Best & Krieger LLP

EPA Issues New Regulation Governing Air Quality Standards for Ozone

Best Best & Krieger LLP on

New Standards Could be Costly for California’s Public Agencies - The United States Environmental Protection Agency issued a final rule earlier this month strengthening the National Ambient Air Quality Standards for...more

Jackson Walker

EPA Finalizes Tougher Ozone Standards

Jackson Walker on

On October 1, 2015, the U.S. Environmental Protection Agency (EPA) released its final rule lowering the ozone National Ambient Air Quality Standards (NAAQS) from 75 parts per billion (ppb) to 70 ppb nationwide (2015 Ozone...more

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