Quote-Unquote: EPA staff again urges stricter fine particulate NAAQS

October 13, 2021
And: TSCA compliance and climate configurations. EPA staff again urges stiffer fine particulate standard as agency reconsiders NAAQS : “We reach the conclusion that the available scientific evidence, air quality analyses, and the risk assessment . . . can reasonably be viewed as calling into question the adequacy of the public health protection afforded by the combination of the current annual and 24-hour primary PM2.5 standards. . . . A level below 12 ug/m3 [the current standard] and as low...

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