North Carolina Counties with 8-Hour Ozone Violations 2003-2005

A map of North Carolina counties with 8 hour ozone violations from 2003 to 2005.

Table 1. The following table shows 3 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.

CountyAverage value
Granville0.085 ppm
Mecklenburg0.087 ppm
Rowan0.088 ppm

Table 2. The following table shows one county with insufficient data to declare nonattainment, due to changing the monitor location in 2004. The first column lists the county; the second lists an unbiased surrogate estimate of the average value for that county.

CountyAverage Value
Alexander0.074 ppm

Table 3. The following table shows 27 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.

CountyAverage Value
Avery0.072 ppm
Buncombe0.074 ppm
Caldwell0.074 ppm
Caswell0.077 ppm
Chatham0.074 ppm
Cumberland0.083 ppm
Davie0.082 ppm
Durham0.078 ppm
Edgecombe0.079 ppm
Forsyth0.079 ppm
Franklin0.081 ppm
Graham0.079 ppm
Guilford0.077 ppm
Haywood0.078 ppm
Jackson0.072 ppm
Johnston0.079 ppm
Lenoir0.077 ppm
Lincoln0.081 ppm
Martin0.077 ppm
New Hanover0.073 ppm
Person0.079 ppm
Pitt0.077 ppm
Rockingham0.078 ppm
Swain0.068 ppm
Union0.079 ppm
Wake0.083 ppm
Yancey0.076 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