fine particle pollution

By Jeryl L. Olson, Eric E. Boyd, and Craig B. Simonsen

The U.S. Environmental Protection Agency (EPA) will hold two public hearings on its proposed updates to the national ambient air quality standards (NAAQS) for fine particle pollution. 

Concerning the primary standards for fine particles (generally referring to particles less than or equal to 2.5 micrometers (mm) in diameter (PM2.5))

Continue Reading EPA to Hold Public Hearings on Proposed Fine Particulate Matter Standard