Approved Air Quality Implementation Plans in EPA's Pacific Southwest (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 below.

• State Implementation Plans (SIPs)
• Tribal Implementation Plans (TIPs)
• Federal Implementation Plans (FIPs)

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