Southeast Coast Network
The Southeast Coast Network (SECN) includes seventeen national parks with significant natural resources and extends along the Atlantic coast from the North Carolina-Virginia border south to Cape Canaveral, Florida, and inland as far as Atlanta, Georgia and the Alabama Coastal Plain. The parks include cultural, historical, and natural areas. All of the parks are designated Class II air quality areas.
Few of the Network parks have on-site ambient air quality monitoring, but in most cases, there are nearby monitors. Atmospheric deposition is a concern for Congaree National Park and Moores Creek National Battlefield, while air toxics are a potential issue for a number of SECN parks. Chattahoochee River National Recreation Area, Horseshoe Bend National Military Park, and Ocmulgee National Monument are in proposed 8-hour ozone non-attainment areas. An ozone injury risk assessment indicates the risk of injury is moderate to high in eight of the seventeen SFCN parks.
The Network map below provides information on air quality monitoring. Ozone, sulfur dioxide, dry deposition, and meteorology are collected by the Clean Air Status and Trends (CASTNet) and Gaseous Pollutant Monitoring (GPMN) networks. Ozone is also monitored with passive samplers and portable continuous analyzers. Wet Deposition is monitored through cooperation with National Atmospheric Deposition Program/National Trends Network (NADP/NTN). The Mercury Deposition Network (MDN), part of NADP, collects precipitation samples that are analyzed for mercury. Visibility is monitored as part of the Interagency Monitoring of Protected Visual Environments (IMPROVE). Additional details on these parameters are described in Air Quality Monitoring.
Air quality monitoring in or near the network is indicated on the map by symbols, with the blue line showing the approximate borders of the network. The legend shows the symbols for the type of monitoring present, with NPS park units in green.