North Carolina Counties with 8-Hour Ozone Violations 2008-2010

A map of North Carolina counties with 8 hour ozone violations from 2008 to 2010.

Table 1. The following table shows 4 counties with a 3-year average of the annual 4th high value for each year equaling 0.076 ppm level or higher (violation of the 8-hour standard). The first column lists the county; the second lists the average value for that county.

CountyAverage value
Forsyth0.076 ppm
Guilford0.076 ppm
Mecklenburg0.082 ppm
Rowan0.077 ppm

Table 2. The following table shows 27 monitored counties that are attaining the 0.076 ppm standard. The first column lists the county; the second lists the average value for that county.

CountyAverage Value
Alexander0.070 ppm
Avery0.067 ppm
Buncombe0.068 ppm
Caldwell0.069 ppm
Caswell0.073 ppm
Chatham0.068 ppm
Cumberland0.071 ppm
Davie0.072 ppm
Durham0.072 ppm
Edgecombe0.071 ppm
Franklin0.071 ppm
Graham0.073 ppm
Granville0.074 ppm
Haywood0.073 ppm
Jackson0.066 ppm
Johnston0.072 ppm
Lenoir0.069 ppm
Lincoln0.072 ppm
Martin0.069 ppm
New Hanover0.061 ppm
Person0.072 ppm
Pitt0.070 ppm
Rockingham0.075 ppm
Swain0.064 ppm
Union0.072 ppm
Wake0.073 ppm
Yancey0.072 ppm

Note:

  • Additional counties may be involved in emission reduction strategies
  • Nonattainment designations may not follow county boundaries
  • Final data validation is not yet complete