EPA Will Reconsider PM2.5 Air Limits Using ‘Supplemental’ Science

EPA will reconsider the Trump EPA’s controversial decision to leave federal standards for particulate matter (PM) unchanged from their 2012 levels and will use an accelerated review process using supplemental scientific data to issue a final rule likely tightening the limits in “Spring 2023,” the agency announced June 10. “The most vulnerable among us are most at risk from exposure to particulate matter, and that’s why it’s so important we take a hard look at these standards that haven’t been...