This page contains Fact Sheets pertaining to regulatory actions on EPA's ambient air monitoring regulations.
You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.- 2019 Proposed Extension of Start Date for Photochemical Assessment Monitoring Stations - Fact Sheet (PDF)(3 pp, 188 K, 5/23/2019)
- 2016 Final Revisions to Ambient Monitoring Quality Assurance and Other Requirements - Fact Sheet (PDF)(2 pp, 32 K)
- 2006 Final Revisions to the National Ambient Air Quality Standards for Particle Pollution – Fact Sheet (PDF)(8 pp, 39 K)
- 2012 Final Revisions to the National Ambient Air Quality Standards for Particle Pollution – Fact Sheet (PDF)(3 pp, 301 K)
- 2015 Final Revisions to the National Ambient Air Quality Standards for Ground Level Ozone – Fact Sheet (PDF)(9 pp, 658 K)