North Carolina Counties with 8-Hour Ozone Violations 2009-2011

Table 1. The following table shows 2 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.

County Average value
Mecklenburg 0.079 ppm
Rowan 0.076 ppm

 

 

 

 

Table 2. The following table shows 28 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.

County Average Value
Alexander 0.067 ppm
Avery 0.064 ppm
Buncombe 0.067 ppm
Caldwell 0.067 ppm
Caswell 0.070 ppm
Chatham 0.066 ppm
Cumberland 0.071 ppm
Durham 0.070 ppm
Edgecombe 0.070 ppm
Forsyth 0.075 ppm
Franklin 0.069 ppm
Graham 0.071 ppm
Granville 0.071 ppm
Guilford 0.074 ppm
Haywood 0.070 ppm
Jackson 0.067 ppm
Johnston 0.071 ppm
Lenoir 0.067 ppm
Lincoln 0.071 ppm
Martin 0.066 ppm
New Hanover 0.062 ppm
Person 0.070 ppm
Pitt 0.069 ppm
Rockingham 0.071 ppm
Swain 0.062 ppm
Union 0.070 ppm
Wake 0.073 ppm
Yancey 0.070 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