The Maricopa Association of Governments was designated by the Governor of Arizona in 1978 and recertified by the Arizona Legislature in 1992 to serve as the Regional Air Quality Planning Agency for the Maricopa County nonattainment area. In accordance with this role, MAG develops regional air quality plans to address air pollution problems. In addition, MAG also conducts the air quality conformity analyses for transportation programs and plans to ensure that transportation activities do not cause air quality violations.

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MAG 2013 Carbon Monoxide Maintenance Plan

• MAG 2013 Carbon Monoxide Maintenance Plan for the Maricopa County Area
• MAG 2013 Carbon Monoxide Maintenance Plan for the Maricopa County Area - Appendices
• MAG 2013 Carbon Monoxide Maintenance Plan for the Maricopa County Area - Combined Document

MAG 2012 Five Percent Plan for PM-10

• MAG 2012 Five Percent Plan for PM-10 for the Maricopa County Nonattainment Area (PDF, 2 MB)
• MAG 2012 Five Percent Plan for PM-10: Appendices, Volume 1 (PDF, 5 MB)
• MAG 2012 Five Percent Plan for PM-10: Appendices, Volume 2 (PDF, 5 MB)
• MAG 2012 Five Percent Plan for PM-10: Main Plan and Appendices (PDF, 12 MB)

MAG 2007 Five Percent Plan for PM-10

• MAG 2007 Five Percent Plan for PM-10 for the Maricopa County Nonattainment Area (52.9MB, PDF)
• Appendices, Volume 1 (52.9MB, PDF)
• Appendices, Volume 2 (11.8MB, PDF)
• Appendices, Volume 3 (39.7MB, PDF)
• Appendices, Volume 4 (54.1MB, PDF)
• Appendices, Volume 5 (19.5MB, PDF)
• Commitments for Implementation, Volume 1 (26.1MB, PDF)
• Commitments for Implementation, Volume 2 (52.9MB, PDF)

Final Eight-Hour Ozone Redesignation Request and Maintenance Plan

• Final Eight-Hour Ozone Maintenance Plan (PDF, 1.5 MB)
• Final Eight-Hour Ozone Maintenance Plan, Appendices, Volume One (PDF, 11.6 MB)
• Final Eight-Hour Ozone Maintenance Plan, Appendices, Volume Two (PDF, 10.5 MB)
• Final Eight-Hour Ozone Maintenance Plan, Appendices, Volume Three (PDF, 3.9 MB)

Eight-Hour Ozone Plan for the Maricopa Nonattainment Area

On June 15, 2004, the EPA designated a 4,880 square mile area located mainly in Maricopa and Pinal Counties as an eight-hour ozone nonattainment area. An eight-hour ozone plan for the Maricopa Nonattainment Area was submitted to the EPA by the June 15, 2007 deadline. The plan demonstrates that the eight-hour ozone standard will be met by the ozone season of 2008, with measures that have been implemented before the ozone season of 2008.

The plan uses photochemical modeling to show that the standard will be attained in 2008 with federal, state, and local control measures that have already been implemented in the region. The modeling results are supported by a downward trend in monitored ozone concentrations. As Figure ES-1 indicates, the eight-hour ozone standard has not been violated at any monitor in the Maricopa nonattainment area for the past two years (i.e., 2005 and 2006).

• Eight-Hour Ozone Plan (PDF, 4.7 MB)
• Appendices, Volume 1 (PDF, 35.0 MB)
• Appendices, Volume 2 (PDF, 78.2 MB)

PM-10 Source Attribution and Deposition Study

• PM-10 Source Attribution and Deposition Study (2.59 MB, PDF)
• Appendix A (1.31 MB, PDF)
• Appendix B (2.79 MB, PDF)
• Appendix C (254.48 KB, PDF)
• Appendix D-1 (4.15 MB, PDF)
• Appendix D-2 (4.26 MB, PDF)
• Appendix D-3 (1.11 MB, PDF)
• Appendix E (583.84 KB, PDF)

PM-10 Exceedance Prevention Workshop Materials

• Arizona Legislature House Bill 2208
• City of Phoenix Dust Control Codes
• City of Phoenix Dust Reduction Task Force Long Term Recommendations
• City of Phoenix Dust Reduction Task Force Short Term Recommendations
• Identifying Areas Subject to Windblown Dust Brochure
• Land Use Maps Around PM-10 Monitors
• MAG Rapid Response Action Plan Template and Toolkit
• Maricopa County Rapid Response Event Log
• Maricopa County Rapid Response Notification PowerPoint Presentation
• PM-10 Monitors in Maricopa County and the PM-10 Nonattainment Area
• Potential Activities Subject to Dust Action General Permit and Best Management Practices
• Unpaved Roads Mileage Summary for PM-10 Nonattainment Area
• Unpaved Roads Mileages and Maps Near PM-10 Monitors

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