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ATS Tells EPA to Issue More Protective Particulate Matter Standard

ATS member Alison Lee, MD, vice chair of the ATS Environmental Health Policy Committee, testified before the EPA Clean Air Scientific Advisory Committee regarding the agency’s reconsideration of the particulate matter National Ambient Air Quality Standard. Dr. Lee presented ATS recommendations that EPA set the PM2.5 standard to 8 ug/m3 annual standard and 25 ug/m3 24-hour standard to protect the public health, including vulnerable populations. The current standard is 12 ug/m3 – annual standard and 35 ug/m3 – 24-hour standard at the 98 percentile. EPA is currently reviewing the existing standard and may propose a revised and more protective standard in the near future.


Last Reviewed: March 2022