"Exceptional Events Documentation Packages [December 2007]"
Data impacted by an exceptional event may be excluded from use in determining compliance with the National Ambient Air Quality Standards (NAAQS) when they meet certain criteria defined in 40 CFR § 50.14 - "Treatment of air quality monitoring data influenced by exceptional events". Exceptional events are defined as events that occur and impact air quality that cannot be controlled by human intervention and that are not expected to reoccur, such as wildfires. To exclude data impacted by an exceptional event the agency must demonstrate to the Environmental Protection Agency that the event occurred, the event impacted the monitor, the value measured was not what would have been expected for that location and season (i.e., it was atypical), and that the NAAQS would not have been exceeded if that event had not occurred. The following fine particle exceptional events documentation packages have been prepared and submitted to EPA:
- Davidson County August 4, 2007, data impacted by smoke from Idaho/Montana wildfires [PDF]
- Catawba County August 5, 2007, data impacted by smoke from Canadian wildfires [PDF]
- Guilford County August 5, 2007, data impacted by smoke from Canadian wildfires [PDF]
- Mecklenburg County October 21, 2005, data impacted by smoke from a prescribed burn [PDF]
- Mecklenburg County July 1, 2006, data impacted by smoke from Canadian wildfires [PDF]
- Mecklenburg County August 5, 2007, data impacted by smoke from wildfires in Canadian [PDF]
- Mecklenburg County August 6, 2007, data impacted by smoke from wildfires in Canadian [PDF]
- Mecklenburg County August 17, 2007, data impacted by smoke from wildfires in Canadian [PDF]
- Mecklenburg County September 5, 2007, data impacted by smoke from wildfires in Canadian [PDF]
- Mitchell County June 11, 2007, data impacted by smoke from local wildfires [PDF]
- Mitchell County June 14, 2007, data impacted by smoke from local wildfires [PDF]
- Robeson County May 3, 2007, data impacted by smoke from wildfires in Georgia [PDF]
- Robeson County August 7, 2007, data impacted by smoke from local wildfires [PDF]
- Swain County March 22, 2007, data impacted by prescribed fires [PDF]
- Swain County March 28, 2007, data impacted by prescribed fires [PDF]
- Wake County June 19, 2007, data impacted by prescribed fires [PDF]
- Wake County August 5, 2007, data impacted by smoke from wildfires in Canada [PDF]
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