North Carolina Counties with 8-Hour Ozone Violations 1997-1999

Table 1. The following table shows 22 of 33 counties and 32 of 45 sites 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 values for that county.

County Average value
Alexander .086 ppm
Caldwell .090 ppm
Caswell .094 ppm
Chatham .088 ppm
Cumberland .092 ppm
Davie .098 ppm
Duplin .085 ppm
Durham .088 ppm
Edgecombe .090 ppm
Forsyth .097 ppm
Franklin .093 ppm
Granville .092 ppm
Guilford .092 ppm
Haywood .094 ppm
Johnston .095 ppm
Lincoln .087 ppm
Mecklenburg .104 ppm
Northampton .087 ppm
Pitt .093 ppm
Rockingham .085 ppm
Rowan .099 ppm
Wake .101 ppm

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Table 2. The following table shows 4 counties with less than a 3 consecutive year average but with a 4th high .085 or higher. The first column lists the county; the second lists the average values for that county.

County Average Value
Lenoir .090 ppm ***
Person .095 ppm ***
Union .096 ppm *
Yancey .085 ppm **

 

 

 

 

 

 

 

Table 3. The following table shows 7 monitoried counties which are attaining the .085 ppm standard. The first column lists the county; the second lists the average values for that county.

County

Average Value

Avery .082 ppm ***
Buncombe .083 ppm
Camden .084 ppm
Jackson .083 ppm *
Martin .082 ppm
New Hanover .078 ppm
Swain .074 ppm

 

 

 

 

 

 

 

 

 

 

 

*  Based on Calendar year 1999, which is not suitable for attainment determination (not 3 consecutive years)
** Based on Calendar years 1996, 1997, and 1999
***Based on Calendar years 1998 and 1999

Note:

  • Additional counties may be involved in emission reduction strategies
  • Nonattainment designations may not follow county boundaries