PM2.5 Design Values for 2001-2003 in NC Counties

Figure 1 Annual Design Values (Mean) (click for larger image)

Table 1. The following table shows 28 counties with a 3-year average of the annual mean PM2.5 for each year below the established standard. The first column lists the county; the second lists the average value for that county.

County Average value
Alamance 13.7 µg/m3
Buncombe 13.0 µg/m3
Cabarrus 14.5 µg/m3
Caswell 13.3 µg/m3
Chatham 12.2 µg/m3
Cumberland 13.8 µg/m3
Duplin 11.9 µg/m3
Durham 13.9 µg/m3
Edgecombe 12.6 µg/m3
Forsyth 14.6 µg/m3
Gaston 14.0 µg/m3
Guilford 14.0 µg/m3
Haywood 13.6 µg/m3
Jackson 12.4 µg/m3
Lenoir 11.5 µg/m3
McDowell 14.2 µg/m3
Mecklenburg 14.9 µg/m3
Mitchell 13.4 µg/m3
Montgomery 12.1 µg/m3
New Hanover 9.6 µg/m3
Onslow 11.1 µg/m3
Orange 13.1 µg/m3
Pitt 12.4 µg/m3
Robeson 12.7 µg/m3
Swain 12.9 µg/m3
Wake 13.8 µg/m3
Watauga 11.7 µg/m3
Wayne 13.7 µg/m3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Table 2. The following table shows 2 counties with a 3-year average of the annual mean PM2.5 for each year above the established standard. The first column lists the county; the second lists the average value for that county.

Note:

  • Additional counties may be involved in emission reduction strategies
  • Nonattainment designations may not follow county boundaries
County Average value
Catawba 15.5 µg/m3
Davidson 15.8 µg/m3

 

 

 

 

 

 

Table 3. The following table shows 2 counties that were monitored in 2003 but did not have a complete and valid 3-year average of the annual mean PM2.5 that could be compared to the established standard.

County Average value
Martin N/A µg/m3
Nash N/A µg/m3