This course describes how exceptional events that are unusual or naturally occurring (fires, wind events, dust storms) events can affect air quality, and how these data can be omitted from NAAQS requirements. The current policy is outlined as are specific case studies, which in some circumstance are reliant on emissions inventory data for the necessary demonstration required to show that it is an Exceptional Event..You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.
- Exceptional Events Updates - Case Study: Wildfire Ozone Event (PDF)(43 pp, 13 MB, 8/14/2017, E. Wortman)
- 2016 Exceptional Events Rule Revisions and the Components of a Successful Exceptional Events Demonstration (PDF)(37 pp, 1 MB, 8/14/2017, B. Gibson)
- Exceptional Events Updates - Case Study: Wildfire Ozone Event in Washoe County, Nevada (PDF)(27 pp, 3 MB, 8/14/2017, B. Gibson)