EPA sets dates for PM NAAQS hearing

EPA will hold a virtual public hearing on its proposal to tighten national ambient air quality standards (NAAQS) for fine particulate matter (PM2.5) on Feb. 21 and Feb. 22, the agency announced, anticipating a large volume of comments on a plan that is backed by environmentalists, but strongly opposed by some industry groups. In a notice scheduled for publication in the Federal Register Jan. 31, EPA says the hearing will last at least two days, and may stretch into...