Major Industry Groups Oppose EPA Staff’s Call For Stricter PM2.5 NAAQS

November 19, 2019
Major industry groups are opposing EPA staff’s recommendation that the agency tighten its annual fine particulate matter (PM2.5) national ambient air quality standard (NAAQS), echoing a majority of EPA’s Clean Air Scientific Advisory Committee (CASAC) in finding that the latest data on PM2.5’s health effects do not justify a stricter limit. But environmental groups and California are among those calling for a more-stringent annual PM2.5 NAAQS, arguing that the existing primary standard of 12 micrograms per cubic meter (ug/m3) fails...

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