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Contact EPA Pacific Southwest Air Program

Pacific Southwest, Region 9

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

Air Plan Actions

Map of EPA Region 9 Arizona California Hawaii Nevada

Air Plan Actions include federal action on state implementation plans (SIPs) to make them federally enforceable. SIPs may contain rules or regulations which control pollution from stationary, area, or mobile sources.

All area NAAQS designations can be found in the Code of Federal RegulationsExiting EPA (disclaimer)

Areas of the country where air pollution levels persistently exceed the national ambient air quality standards can be found at the The Green Book Nonattainment Areas for Criteria Pollutants.

Recent Air Plan Actions in Region 9 are provided below.

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