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Due to a lapse in appropriations, EPA websites will not be regularly updated. In the event of an environmental emergency imminently threatening the safety of human life or where necessary to protect certain property, the EPA website will be updated with appropriate information. Please note that all information on the EPA website may not be up to date, and transactions and inquiries submitted to the EPA website may not be processed or responded to until appropriations are enacted.

We've made some changes to EPA.gov. If the information you are looking for is not here, you may be able to find it on the EPA Web Archive or the January 19, 2017 Web Snapshot.

Disclaimer: EPA Approved State Implementation Plans and Regulations on the Web

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 notify us at the email address below of any errors found in these files.