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The following table shows 20 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 |
| Alexander |
.088 ppm |
| Caswell |
.088 ppm |
| Cumberland |
.087 ppm |
| Davie |
.093 ppm |
| Durham |
.089 ppm |
| Edgecombe |
.089 ppm |
| Forsyth |
.093 ppm |
| Franklin |
.090 ppm |
| Granville |
.094 ppm |
| Guilford |
.089 ppm |
| Haywood |
.085 ppm |
| Johnston |
.085 ppm |
| Lincoln |
.092 ppm |
| Mecklenburg |
.098 ppm |
| Person |
.091 ppm |
| Randolf |
.085 ppm |
| Rockingham |
.091 ppm |
| Rowan |
.100 ppm |
| Union |
.088 ppm |
| Wake |
.092 ppm |
The following table shows three counties with insufficient data to declare nonattainment. The first column lists the county; the second lists the average value for that county.
| County |
Average value |
| Camden |
.081 ppm |
| Graham |
.075 ppm |
| Jackson |
.084 ppm |
The following table shows 12 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 |
| Avery |
.078 ppm |
| Buncombe |
.078 ppm |
| Caldwell |
.084 ppm |
| Chatham |
.082 ppm |
| Duplin |
.079 ppm |
| Lenoir |
.081 ppm |
| Martin |
.081 ppm |
| New Hanover |
.078 ppm |
| Northampton |
.084 ppm |
| Pitt |
.082 ppm |
| Swain |
.074 ppm |
| Yancey |
.083 ppm |
Note
- Additional counties may be involved in emission reduction strategies
- Nonattainment designations may not follow county boundaries
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