EPA Washington, DC
EPA announced that it will reconsider the previous administration’s decision to retain the particulate matter National Ambient Air Quality Standards (NAAQS), which were last strengthened in 2012. EPA is reconsidering the December 2020 decision because available scientific evidence and technical information indicate that the current standards may not be adequate to protect public health and welfare, as required by the Clean Air Act. “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 updated in nine years,” said EPA Administrator Michael S. Regan. “EPA is committed to ensuring this review, and other upcoming NAAQS reviews, reflect the latest science and public health data.”
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