New Source Review Permitting Improvement Act

This bill clarifies when major industrial facilities (like factories or power plants) need new permits under the Clean Air Act. It specifically states that changes designed to reduce emissions per unit of production or improve safety/reliability won’t count as "modifications" requiring permits - unless the change would cause harm to health or the environment. This affects facilities seeking to upgrade equipment for efficiency or safety without triggering lengthy permitting processes. The bill streamlines existing rules by excluding these common improvements from permit requirements. It does not create new regulations but makes current definitions clearer for industry and regulators.