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Approved Air Quality Implementation Plans in Region 9

Arizona, California, Hawaii, Nevada, Pacific Islands, and Tribal Nations

Approved State Implementation Plans (SIPs), Tribal Implementation Plans (TIPs), and Federal Implementation Plans (FIPs) within EPA Region 9 states and territories listed above.

State Implementation Plans (SIPs)

Region 9 Air Plan Actions include federal action on SIPs to make them federally enforceable. SIPs may contain rules or regulations which control pollution from stationary, area, or mobile sources.

Tribal Implementation Plans (TIPs)

Federal Implementation Plans (FIPs)

Navajo Nation - Navajo Generating Station

Hawaii Regional Haze

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