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Area Designations for the 2012 Annual Fine Particle (PM2.5) Standard

Regulatory Actions

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This page contains a chronological listing of all regulatory actions related to designations for the 2012 annual fine particle standards.

Additional Final Area Designations and Technical Amendment for the 2012 Annual Fine Particle Standard Established in 2012
March 31, 2015 - EPA is establishing or revising initial area designations and a technical amendment to correct an inadvertent error in the initial designation for one area for the 2012 annual national ambient air quality standards for fine particle pollution.  

Final Area Designations for the 2012 National Air Quality Standard for Fine Particles
December 18, 2014 - After considering state and tribal recommendations, reviewing the most recent certified fine particle air quality data, and emissions that contribute fine particle pollution, EPA has completed initial designations for the 2012 annual fine particle standard.

Recommended Area Designations for the 2012 National Air Quality Standards for Fine Particles
August 19, 2014 -  In response to recommendations from state and tribal representatives, EPA has sent letters outlining the areas it’s intended designations for the annual fine particle air quality standards set in 2012.

 

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