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 www.epa.gov. 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 This website is no longer updated and links to external websites and some internal pages may not work.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 »

Fact Sheet for The Cross-State Air Pollution Rule: Reducing the Interstate Transport of Fine Particulate Matter and Ozone

This document provides a summary of the Cross-State Air Pollution Rule as of July 6, 2011.

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

CSAPR Fact Sheet (PDF)(7 pp, 141 K)