Federal Register Notices and Other Documents that Informed the Development of the 2016 Exceptional Events Rule
The EPA promulgated the original Exceptional Events Rule in March of 2007. In May of 2013, the EPA released Interim Exceptional Events Implementation Guidance to assist air agencies in interpreting and implementing the provisions of the 2007 rule. At the same time, the EPA acknowledged the need to consider additional changes that could only be accomplished through a notice-and-comment rulemaking. A subsequent rulemaking effort resulted in proposing revisions to the 2007 Exceptional Events Rule in November of 2015. The EPA finalized these rule revisions in September of 2016. We list below the 2015 proposed rule revisions, related Feder Register notices, and other supporting documents that informed the rule development process.
On this page:
Federal Register Notices and Docket Materials
- Response to Comments Document for 2016 rule revisions
- Federal Register Notice - Proposed revisions to the Exceptional Events Rule
- Federal Register Notice – Extension of public comment period to February 3, 2016
- Fact Sheet - Final Revisions to the 2007 Exceptional Events Rule and Notice of Availability for Related Draft Guidance
- Fact Sheet - Exceptional Events Interim Guidance
- Fact Sheet - Proposed Revisions to the 2007 Exceptional Events Rule and Notice of Availability for Related Draft Guidance
2013 Interim Guidance Documents
- Interim Guidance to Implement Requirements for the Treatment of Air Quality Monitoring Data Influenced by Exceptional Events
- Updated Exceptional Events Rule FAQs
The Interim Exceptional Events Rule FAQs (Attachment 1 of the 2013 Interim Guidance notice above) have been replaced by Updated Exceptional Events Rule FAQs that fully reflect the 2016 revisions to the Exceptional Events Rule.
- 2013 Interim Guidance on the Preparation of Demonstrations in Support of Requests to Exclude Ambient Air Quality Data Affected by High Winds under the Exceptional Events Rule
The EPA is in the process of developing Updated Guidance for High Wind Dust Events to fully reflect the 2016 revisions to the Exceptional Events Rule.
EPA Exceptional Events Contact:
U.S. EPA, Office of Air Quality Planning and Standards