New Source Review Permitting Improvement Act

The New Source Review Permitting Improvement Act amends the Clean Air Act to clarify when industrial facilities must obtain permits for changes that could increase air pollution. It defines a "modification" as a change that raises the maximum hourly emission rate of a pollutant compared to the highest level achievable in the preceding ten years, while explicitly excluding projects designed to improve safety, reliability, or reduce emissions per unit of production unless they pose an adverse health or environmental risk. Additionally, the bill narrows the scope of "construction" to physical work on specific emissions-generating parts of a facility, ensuring that other costly or permanent on-site activities do not automatically trigger permitting requirements if they do not result in a significant increase in actual annual emissions.