This proposed rule addresses the summertime (May – September) transport of ozone pollution in the eastern United States that crosses state lines to help downwind states and communities meet and maintain the 2008 ozone national ambient air quality standard (NAAQS).
You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.- Revised CSAPR Update Proposal (PDF)(558 pp, 2 MB)