HomeWashington Letter2020 ▶ EPA Issues Final Particulate Matter Standard
EPA Issues Final Particulate Matter Standard

This week, EPA issued its final rule for the particulate matter National Ambient Air Quality Standard, electing to maintain the current annual standard of 12 μg/m3 and 35 μg/m3.  During its decision-making process, the EPA disbanded the Clean Air Scientific Advisory Committee particulate matter expert advisory panel, and instead convened a panel of expert consultants with significant industry connections. The EPA also accelerated the development of the science and policy assessments, and the consideration of a “threshold effect” for particulate matter pollution. The Agency also chose to dismiss the findings of key epidemiology studies that demonstrated adverse health effects of particulate matter at levels below the current standard. The ATS believes the process was flawed and has led to a flawed decision.

Last Reviewed: April 2020