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Pacific Southwest, Region 9

Serving: Arizona, California, Hawaii, Nevada, Pacific Islands, Tribal Nations

Particulate Matter in Pinal County, AZ

Particulate Matter in Pinal County, AZ

  • September 4, 2013: Determination of Attainment for the 2006 24-Hour PM2.5 National Ambient Air Quality Standard in the West Central Pinal Nonattainment Area
  • July 12, 2013: Proposed Determination of Attainment for the 2006 24-Hour PM2.5 National Ambient Air Quality Standard in the West Central Pinal Nonattainment Area
  • May 23, 2012: Final Action to redesignate a portion of Pinal County to nonattainment for the 1987 24-hour PM-10 national ambient air quality standard
  • October 1, 2010: Proposal to redesignate as nonattainment for the PM-10 NAAQS

Determination of Attainment for the 2006 24-Hour PM2.5 National Ambient Air Quality Standard in the West Central Pinal Nonattainment Area

On September 4, 2013, EPA published a notice in the Federal Register determining that the West Central Pinal nonattainment area has attained the 2006 24-hour PM2.5 national ambient air quality standard (NAAQS).

Contact Information
Ginger Vagenas (vagenas.ginger@epa.gov)
Air Planning Office, US EPA, Region 9
(415) 972-3964

Proposed Determination of Attainment for the 2006 24-Hour PM2.5 National Ambient Air Quality Standard in the West Central Pinal Nonattainment Area

On July 12, 2013 EPA published a notice in the Federal Register proposing to determine that the West Central Pinal nonattainment area has attained the 2006 24-hour PM2.5 national ambient air quality standard (NAAQS). EPA will accept comment on the proposal for 30 days after publication.

Contact Information
Ginger Vagenas (vagenas.ginger@epa.gov)
Air Planning Office, US EPA, Region 9
(415) 972-3964


Final Redesignation as Nonattainment for the PM-10 NAAQS

On May 23, 2012, EPA redesignated an area in western Pinal County, Arizona to nonattainment for the 1987 24-hour National Ambient Air Quality Standard (NAAQS) for particulate matter (PM-10). Today’s final action will become effective 30 days from the date of publication in the Federal Register.

Contact Information
Ginger Vagenas (vagenas.ginger@epa.gov)
Office of Air Planning
EPA Region 9
(415) 972-3964

Particulate Matter in Pinal County, Arizona

EPA has proposed to redesignate the western portion of Pinal County, Arizona nonattainment for the 1987 24-hour National Ambient Air Quality standard (NAAQS) for particulate matter (PM-10) based on ambient monitoring data that indicate widespread and frequent violations of the standard. EPA is accepting comments on the proposal until November 1, 2010.

Contact Information
Ginger Vagenas (vagenas.ginger@epa.gov)
Office of Air Planning
EPA Region 9
(415) 972-3964

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