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Regulatory Standards Air Pollution Clean Air Act

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

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

PM 2.5/Soot/Clean Air Scientific Advisory Committee: Draft Letter Recommending Reconsideration of National Ambient Air Quality...

The Clean Air Scientific Advisory Committee (“CASAC”) sent a February 4th letter to the United States Environmental Protection Agency (“EPA”) addressing the following subject: CASAC Review of the EPA’s Policy Assessment for...more

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

Particulate Matter NAAQS/Clean Air Act: U.S. Environmental Protection Agency Retains Current Standard

The United States Environmental Protection Agency (“EPA”) announced it is proposing to retain the current Clean Air Act National Ambient Air Quality Standard (“NAAQS”) for particulate matter (“PM”). The PM standard includes...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

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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