Approved Air Quality Implementation Plans in Illinois
This site contains information about air quality regulations called State Implementation Plans (SIPs), Federal Implementation Plans (FIPs), and Tribal Implementation Plans (TIPs) approved by EPA within Illinois. To find the status of SIP submittals, visit SIP status reports.
- EPA has not approved any TIPs in Illinois
- About TIPs
- EPA has not approved any FIPs in Illinois
- About FIPs
About this website: The official SIPs, TIPs, and FIPs are contained in regulations promulgated in the Federal Register and codified in the U.S. Code of Federal Regulations (CFR). EPA’s web-versions of the approved SIPs, TIPs, and FIPs are for reference. While we make every effort to maintain the accuracy of the files accessible here, inconsistencies may occur. Please contact us using the link below if you find any errors in these files.