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Pacific Southwest, Region 9

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

Particulate Matter in Nogales, AZ

Final Rule Determining Attainment for the 2006 24-Hour PM2.5 National Ambient Air Quality Standard in the Nogales Nonattainment Area

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

Final Approval of the 2012 Nogales PM10 Plan

EPA has taken final action to approve the moderate area plan for the Nogales, Arizona PM10 nonattainment area. This final rule is effective 30 days after publication in the Federal Register.

For further information, please contact Jerry Wamsley (Wamsley.Jerry@epa.gov)


Proposed Approval of the 2012 Nogales PM10 Plan

On June 27, 2012, EPA proposed to approve the Moderate Area Plan for the Nogales, Arizona PM10 Nonattainment Area. A 30-day public comment period followed publication in the Federal Register.

For further information, please contact Jerry Wamsley (Wamsley.Jerry@epa.gov)


Determination of Attainment of the PM10 Standard for Nogales, AZ, as of the 1994 Deadline

EPA has signed a final rule determining, based on quality-assured, certified ambient monitoring data, that the Nogales area in Arizona attained the 1987 primary National Ambient Air Quality Standards (NAAQS) for particulate matter (PM-10) as of the applicable attainment date of December 31, 1994. The Clean Air Act and our regulations require three years of quality-assured, State certified ambient air quality data to make this finding.

Related Documents

Final rule* 11/11/2011
Proposed rule* 11/2/2010
Contact Information

Wienke Tax (tax.wienke@epa.gov)
Office of Air Planning, EPA Region 9
(415) 947-4192

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