EPA Lowers the PM2.5 NAAQS: Goldilocks Can Sleep Soundly
Law and Environment
FEBRUARY 8, 2024
Yesterday, EPA finalized a rule lowering the primary annual National Ambient Air Quality Standard for PM2.5 to 9.00 ug/m 3. This is a significant reduction from the current 12.00 ug/m 3 standard and a victory for environmentalists, even though they had advocated for larger reduction. There is substantial evidence supporting the reduction, both in the legal and the common sense understanding of this term.
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