Eastern Rivers and Mountains Network
The Eastern Rivers and Mountains Vital Signs Network (ERMN) consists of nine NPS units in Pennsylvania, West Virginia, New York and New Jersey. The parks include cultural, historical and natural areas, and many of them were established to protect unique river resources. All nine units 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. The air pollutants of significant concern for the ERMN are ozone and toxic pollutants. Six of the Network parks are in designated 1-hour or proposed 8-hour ozone non-attainment areas. An ozone injury risk assessment indicates the risk of injury is moderate to high in ERMN parks. Fish consumption advisories for mercury, PCBs, and chlordane have been issued in Pennsylvania and West Virginia. Whether the major pathway for toxic pollutants in these states is airborne or waterborne is unknown.
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) network. 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.