North Coast and Cascades Network
The North Coast and Cascades Vital Signs Network (NCCN) includes six national park units in Oregon and Washington: Ebey's Landing National Historical Reserve (NHR), Fort Clatsop National Memorial Park (NMP), Fort Vancouver National Historic Site (NHS), Mount Rainier National Park (NP), North Cascades NP, Olympic NP, and San Juan Island National Historic Park (NHP). Mount Rainier (NP), North Cascades NP, and Olympic NP are Class I air quality areas, receiving the highest protection under the Clean Air Act. The other park units are Class II air quality areas.
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. Class I areas have linkable access to ARIS information.