EPA proposes strengthening primary annual NAAQS for PM2.5

Green Car Congress
By mmillikinJan 7, 2023, 9:00 am217 pts
The US Environmental Protection Agency (EPA) announced a proposal to to revise the primary (health-based) annual PM2.5 standard from its current level of 12.0 µg/m3 to within the range of 9.0 to 10.0 µg/m3. EPA is taking comment on the full range (between 8 and 11 10 µg/m3) included in the Clean Air…

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