Requirement:
b
Description:
PM₂.₅ less than 15 μg/m³.
Support Threshold:
The EPA's 2012 NAAQS requre PM₂.₅ to be less than 12 μg/m³ for a primary annual mean, secondary annual mean of 15 μg/m³ and a 24-hour concentration of 35 μg/m³, averaged over three years .
Part:
Standards for Particulate Matter and Inorganic Gases
RecDocTitile:
National Ambient Air Quality Standards