Sand Through the Hourglass: PSD Enforcement and the Statute of Limitations
In 1977, the U.S. Congress amended the Clean Air Act (CAA)1 to codify a new source review (NSR) program for major new or modified sources in areas that attain national ambient air quality standards (NAAQS). These prevention of significant deterioration (PSD) provisions require major new or modified sources2 that will emit significant amounts of regulated pollutants3 to obtain a permit before commencing construction of the source or modification.