Northern Colorado Plateau Network
The Northern Colorado Plateau Vital Signs Network (NCPN) includes 16 national park units in Arizona, Colorado, New Mexico, and Arizona: Arches NP, Black Canyon of the Gunnison NP, Bryce Canyon NP, Canyonlands NP, Capitol Reef NP, Cedar Breaks NMON, Colorado NMON, Curecanti NRA, Dinosaur NMON, Fossil Butte NMON, Golden Spike NHS, Hovenweep NMON, Natural Bridges NMON, Pipe Spring NMON, Timpanogos Cave NMON and Zion NP. Class I areas, which receive the highest protection under the Clean Air Act, include Arches National Park (NP), Black Canyon of the Gunnison NP, Bryce Canyon NP, Canyonlands NP, Capitol Reef NP, and Zion NP. The remaining areas are Class II air quality areas and also receive protection under the Clean Air Act.
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.