The EPA has strengthened the annual health-based national ambient air quality standard for fine particulate matter from a level of 12 micrograms per cubic meter to 9 micrograms per cubic meter.
The rule requires incorporating improved fuel-efficient technologies for airplanes manufactured after January 1, 2028, and for subsonic jet airplanes and large turboprop and propeller airplanes that are not yet certified.
The “Safer Communities by Chemical Accident Prevention Rule” includes EPA’s most protective safety provisions for chemical facilities in history, requiring stronger measures for prevention, preparedness, and public transparency.