Resource Catalog
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Host Agency:
- Environmental Protection Agency
Publication Date: October 3, 2016
Exceptional events are unusual or naturally occurring events that can affect air quality but are not reasonably controllable using techniques that tribal, state or local air agencies may implement in order to attain and maintain the National Ambient Air Quality Standards. Exceptional events include wildfires, stratospheric ozone intrusions and volcanic and seismic activities.
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Keywords:
- EPA - Environmental Protection Agency
- exceptional event
- NAAQS - National Ambient Air Quality Standards
- O3 - ozone
- wildfires
Record Last Modified:
Record Maintained By: FRAMES Staff (https://www.frames.gov/contact)
FRAMES Record Number: 22972