An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

Clean Air Technology Center

CATC Fact Sheets, Technical Bulletins, Technical Reports and Newsletters

The Air Pollution Control Technology Fact Sheets are short descriptions of different types of control technologies, including emission limits and reductions, application, costs, and characteristics. The Technical Bulletins and Reports are longer documents with more detailed information about specific control technologies.

You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.