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
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
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
The United States Environmental Protection Agency (EPA) on Halloween published a draft policy assessment recommending that the current National Ambient Air Quality Standards (“NAAQS”) of 70 parts per billion (ppb) be...more
According to Bloomberg Environment (subscription required), EPA’s Clean Air Science Advisory Committee cannot reach agreement whether to recommend that the NAAQS for PM2.5 be lowered. Even after two years, I guess I had not...more
On October 1, the Environmental Protection Agency issued a prepublication version of a final rule establishing a new National Ambient Air Quality Standard (NAAQS) for ozone. The final rule lowers the primary and secondary...more
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
Operating conditions during periods of startup, shutdown, and malfunction (SSM) are not normal and often result in unrepresentative emissions that exceed permitted limitations. Originally published in The Natural Gas &...more
As we have noted previously, EPA has had difficulty in promulgating a revised National Ambient Air Quality Standard for ozone. Whenever the revised NAAQS is issued – and EPA is under court deadline to propose a draft by...more