Jump to main content or area navigation.

Contact EPA Pacific Southwest Air Program

Pacific Southwest, Region 9

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

Particulate Matter in Hayden, AZ

Particulate Matter in Hayden, AZ

EPA has signed a final rule determining, based on quality-assured, certified ambient monitoring data, that the Hayden 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 Act and our regulations require three years of quality-assured, certified ambient air quality data to make this finding.

Related Documents

Final rule
Proposed rule

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


Pacific Southwest NewsroomPacific Southwest Programs Grants & FundingUS-Mexico Border Media CenterCareers About EPA Region 9 (Pacific Southwest)A-Z Index

Jump to main content.