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2018-2019 Annual Monitoring Network Plan for North Carolina Air Quality

The North Carolina Division of Air Quality, DAQ, operates a network of air quality monitors across the state. The network:

  • Includes 75 monitors at multiple sites
  • Measures the concentration of regulated pollutants in the ambient or outdoor air (including ozone, lead, fine particles, nitrogen oxides, sulfur dioxide and carbon monoxide)
  • Compares concentrations to the national ambient air quality standards, NAAQS, as set by the United States Environmental Protection Agency (EPA)
  • Reports any violations and takes regulatory action to return the ambient air quality to acceptable levels.

Every year the monitoring network is re-evaluated and adjusted to ensure it is providing adequate coverage. In most years these adjustments include starting new monitors, shutting down others, or simply relocating established monitors.

The proposed annual network plan is subject to a 30-day public review period prior to being submitted to EPA for approval. A summary of significant network changes is below:

The North Carolina Network currently consists of fifty (50) Monitoring Sites.  Thirty-eight (38) are operated by DAQ; four (4) are operated by Mecklenburg County Air Quality, MCAQ; three (3) are operated by Western North Carolina Regional Air Quality Agency; three (3) are operated by Forsyth County and two (2) are operated by Duke Progress Energy.

 The Sulfur Dioxide, SO2, Network

  • No significant changes are proposed.

Particulate Matter, PM2.5 & PM10, Network

  • The DAQ is proposing to add a PM 2.5 monitor at the Rockwell site in Rowan County for the purposes of collecting background data. 

Nitrogen Dioxide, NO2, Network

  • The DAQ is proposing to add a NO2 monitor at the Rockwell site in Rowan County for the purposes of collecting background data. 

Carbon Monoxide, CO, Network

  • No significant changes are proposed.

Ozone Network

  • No significant changes are proposed.

Other

  • The DAQ is proposing to install a monitoring station in Northampton County for the purpose of collecting background NO2 and PM 2.5 data.
  • The DAQ plans to remove the Blackstone site near Sanford before the end of 2018 since it has accomplished its objective of collecting background data.

2018-2019 Annual Monitoring Network Plan - Volume 1 - By Pollutant

2018-2019 Annual Monitoring Network Plan - Volume 1 Addendum 1

By Division of Air Quality Regional Office: