Under the federal Clean Air Act, new major sources of air pollutants and major modifications to existing sources are required to obtain preconstruction permits, known as PSD permits, even when locating in an area that attains the National Ambient Air Quality Standards (“NAAQS”). EPA’s proposed revisions to the NAAQS for fine particulate matter (“PM2.5”) would make obtaining the required permit far more difficult.
Continue Reading New Challenges to Permitting Under the Clean Air Act