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Particle Pollution Designations

Additional Final Area Designations and Technical Amendment for the 2012 Annual Fine Particle Standard Established in 2012 - March 2015

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.

Federal Register Notice (PDF)(17 pp, 289 K, About PDF) - April 7, 2015

See other area designations for the 2012 Annual Fine Particle Standard

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Fact Sheet (PDF)(3 pp, 110 K)
Map Showing Designated and Deferred Areas (PDF)(1 pg, 71 K)