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  2. Air Quality Implementation Plans

Current FIPs in Washington

EPA is required to develop an air quality Federal Implementation Plan (FIP) if a state fails to submit an implementation plan, or if the plan does not fully comply with the NAAQS or NAAQS-related requirements, such as regional haze. EPA may also develop a FIP for tribal lands if a tribe elects not to develop their own implementation plan, as appropriate. Learn more about FIPs.


Current FIPs in Washington
Code of Federal Regulations (CFR) Section Heading CFR Citation Federal Register (FR) Citation
Significant deterioration of air quality. 40 CFR 52.2497

7/18/19
84 FR 34306 (pdf) (243 KB)

Visibility protection. 40 CFR 52.2498 7/11/22
87 FR 41064 (pdf) (308 KB)
Best available retrofit technology (BART) requirements for the Intalco Aluminum Corporation (Intalco Works) primary aluminum plant - Better than BART Alternative. 40 CFR 52.2500

06/11/14
79 FR 33438 (pdf) (364 KB)

Best available retrofit technology requirement for the Tesoro Refining and Marketing Company oil refinery - Better than BART Alternative. 40 CFR 52.2501 06/11/14
79 FR 33438 (pdf) (364 KB)
Best available retrofit technology requirements for the Alcoa Inc. - Wenatchee Works primary aluminum smelter. 40 CFR 52.2502

11/24/14
79 FR 69767 (pdf) (240 KB)

Air Quality Implementation Plans

  • About Air Quality Implementation Plans
  • Approved Air Quality Implementation Plans
  • Develop an Air Quality SIP
  • Find a Regional Contact for Air Quality SIPs/FIPS/TIPs
  • Tools for SIP Status
Contact Us about Air Quality Implementation Plans
Contact Us to ask a question, provide feedback, or report a problem.
Last updated on June 6, 2025
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