Contradicting EPA Staff, CASAC Majority Calls For Tougher Ozone Limits

March 30, 2023
A majority of EPA’s Clean Air Scientific Advisory Committee (CASAC) is calling for a substantial tightening of federal ozone limits, likely including the creation of a distinct, tougher “secondary” limit to protect plant life, contradicting the recommendation of EPA staff to leave existing limits unchanged. At its meeting in Durham, NC, March 29 and 30, CASAC’s special panel overseeing EPA’s reconsideration of ozone national ambient air quality standards (NAAQS) coalesced around positions calling for the current “primary” or health-based limit...

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