DHEC has developed an ambient (outdoor) air quality monitoring network for sulfur dioxide and other pollutants to:
- measure maximum expected concentrations
- measure concentrations in areas where people live, work and play,
- provide background information in rural areas,
- help determine the impacts of sulfur dioxide emissions from specific sources, and
- monitor interstate and intrastate transport of pollutants.
In 2011, there were 7 SO2 monitors strategically located in 5 counties throughout the state. DHEC chose the location for each monitor in accordance with EPA monitor-siting requirements found in the Code of Federal Regulations Title 40, Part 58, Appendix E .