EPA Floats New ‘Safeguards’ In Revised ‘Once In, Always In’ Air Toxics Rule

September 22, 2023
EPA is proposing to adopt a revised version of its longstanding “once in, always in” (OIAI) air toxics control policy, preserving a Trump-era option that had allowed facilities to reclassify from strictly regulated “major sources” to lesser-regulated “area sources,” though with new provisions giving states power to craft and enforce new permit “safeguards” that aim to prevent any emissions increases. “Today, EPA is proposing additional safeguards to address emissions of hazardous air pollutants from major industrial sources,” said Joe Goffman,...

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