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  2. Particle Pollution Designations

Recommended Area Designations for the 2012 National Air Quality Standards for Fine Particles - Aug 2014

August 19, 2014 -  In response to recommendations from state and tribal representatives, EPA sent letters outlining the areas it’s intended designations for the annual fine particle air quality standards set in 2012.

  • Notice of Availability and Public Comment Period (pdf) (4 pp, 250 KB) - Federal Register - August 29, 2014
  • Fact Sheet (pdf) (97.38 KB)
  • Tables showing comparison of State/Tribal recommendations and EPA responses - Nonattainment areas (pdf) (80.41 KB)
  • Tables showing comparison of State/Tribal recommendations and EPA responses - Unclassifiable areas (pdf) (80.95 KB)
  • Tables showing comparison of State/Tribal recommendations and EPA responses - Deferred areas (pdf) (75.56 KB)

Particle Pollution Designations

  • Learn About Particle Pollution Designations
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Last updated on May 7, 2025
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