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Pacific Southwest, Region 9

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

Air Actions, Arizona

Note: EPA no longer updates this information, but it may be useful as a reference or resource.

Carbon Monoxide Actions in Phoenix, AZ

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January 2005: Final Redesignation for Carbon Monoxide

January 3, 2005: EPA redesignated the Phoenix metropolitan area in Arizona to attainment for the National Ambient Air Quality Standard (NAAQS) for carbon monoxide and approved the attainment demonstration and maintenance plan showing maintenance of the CO standard through 2015. EPA also finalized a boundary change that removes the Gila River Indian Community (GRIC) from the Phoenix CO maintenance area.

Contact Information
Wienke Tax (tax.wienke@epa.gov)
(415) 947-4192


September 2004: Proposed Redesignation for Carbon Monoxide

September 21, 2004: EPA proposed to redesignate the Phoenix metropolitan area in Arizona to attainment for the National Ambient Air Quality Standard (NAAQS) for carbon monoxide and proposed to approve the attainment demonstration and maintenance plan showing maintenance of the CO standard through 2015. EPA also proposed a boundary change that removes the Gila River Indian Community (GRIC) from the Phoenix CO maintenance area.

Contact Information
Wienke Tax (tax.wienke@epa.gov)
(415) 947-4192


September 2003: Final Finding of Attainment for Carbon Monoxide

September 9, 2003: EPA finalized its finding of attainment for the Phoenix area for the carbon monoxide national air quality health standard.

Contact Information
Wienke Tax (tax.wienke@epa.gov)
(415) 947-4192

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