North Carolina Counties with 8-Hour Ozone Violations 2004-2006

Table 1. The following table shows two counties with a 3-year average of the annual 4th high value for each year equaling 0.085 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 0.088 ppm
Rowan 0.085 ppm

 

 

 

 

Table 2. The following table shows three counties apparently attaining the standard, but with insufficient data for a proper design value average due to either monitor relocations or inadequate data collection during the 3-year interval. The first column lists the county; the second lists a surrogate average value for that county.

County Average Value
Guilford 0.081 ppm
Jackson 0.073 ppm
Yancey 0.075 ppm

 

 

 

 

 

Table 3. The following table shows 26 monitored counties that are attaining the 0.085 ppm standard. The first column lists the county; the second lists the average value for that county.

County Average Value
Alexander 0.070 ppm
Avery 0.069 ppm
Buncombe 0.074 ppm
Caldwell 0.073 ppm
Caswell 0.075 ppm
Chatham 0.072 ppm
Cumberland 0.080 ppm
Davie 0.079 ppm
Durham 0.076 ppm
Edgecombe 0.075 ppm
Forsyth 0.080 ppm
Franklin 0.077 ppm
Graham 0.078 ppm
Granville 0.080 ppm
Haywood 0.078 ppm
Johnston 0.076 ppm
Lenoir 0.073 ppm
Lincoln 0.079 ppm
Martin 0.074 ppm
New Hanover 0.072 ppm
Person 0.076 ppm
Pitt 0.075 ppm
Rockingham 0.075 ppm
Swain 0.065 ppm
Union 0.078 ppm
Wake 0.078 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