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.

• American Samoa
• Arizona
• California
• Commonwealth of the Northern Mariana Islands
• Guam
• Hawaii
• Nevada

Tribal Implementation Plans (TIPs)

• Gila River Indian Community
• Navajo Nation
• Pechanga Band of Luiseño Mission Indians of the Pechanga Reservation
• Salt River Pima-Maricopa Indian Community

Federal Implementation Plans (FIPs)

Navajo Nation - Navajo Generating Station

• Federal Register: Final Rule
• Rulemaking Docket

Hawaii Regional Haze

• Federal Register: Final Rule
• Rulemaking Docket