SO2 Average Values for 2005-2007 in NC Counties

A map of North Carolina counties with sulfur dioxide ninety-ninth percentile averages from 2005 to 2007.

 

Table 1. The following table shows 3-year averages for the 99th percentile of daily maximum SO2concentrations, for two counties that exceeded the national ambient standard of 75 PPB. The first column lists the county, the second lists the average value for that county.

CountyAverage 99th Percentile
Mecklenburg83.6 PPB
New Hanover87.8 PPB

Table 2. The following table shows 3-year averages for the 99th percentile of daily maximum SO2concentrations for three counties that attained the national ambient standard of 75 PPB. The first column lists the county, the second lists the average value for that county.

CountyAverage 99th Percentile
Beaufort47.3 PPB
Forsyth73.0 PPB
Wake21.7 PPB