This page contains a variety of documents that are supplementary to the November 2014 proposed revision for the 2008 Ozone National Ambient Air Quality Standards (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.- Overview of EPA's Proposal to Update the Air Quality Standards for Ground-level Ozone (PDF)(7 pp, 472 K, November 2014)
- EPA's Proposal to Update the Air Quality Standards for Ground-level Ozone: Tools for Addressing Background Ozone (PDF)(4 pp, 359 K, 2014)
- EPA’s Proposal to Update the Air Quality Standards for Ground-Level Ozone: Designations, Monitoring and Permitting Requirements (PDF)(6 pp, 417 K, 2014)
- EPA's Proposal to Update the Air Quality Standards for Ground-level Ozone: By the Numbers (PDF)(2 pp, 391 K, November 2014)
- Proposed Revisions to National Ambient Air Quality Standards for Ozone PowerPoint (PDF)(28 pp, 1 MB, December 2014)