Estacada Clackamas River Elementary School
Eastern Band of Cherokee: Old Cherokee High
Theodore Roosevelt NP - Painted Canyon VC
Chatfield Park - 11500 N. Roxborough Park Rd.

Secretaría de Medio Ambiente y Ordenamiento Territorial
Santa Barbara County Air Pollution Control District
Arkansas Department of Environmental Quality
Colorado Department of Public Health and Environment
Pennsylvania Dept. of Environmental Protection
Michigan Department of Environment, Great Lakes, and Energy
Massachusetts Dept. of Environmental Protection
West Virginia Division of Air Quality - Wheeling
Idaho Department of Environmental Quality
Red de Monitoreo de la Calidad del Aire de la Ciudad de Mexico
Texas Commission on Environmental Quality
Wyoming Department of Environmental Quality
Alberta Environmental Monitoring and Reporting Agency (AEMERA)
Florida Dept. of Environmental Protection
New Hampshire Dept. of Environmental Services
British Columbia Ministry of Environment
North Carolina DEQ - Division of Air Quality
New Jersey Dept. of Environmental Protection
Quality Review and Exchange System for Tribes (QREST)
North Coast Unified Air Quality Management District
New York Dept. of Environmental Conservation
Clark County Department of Environment and Sustainability
Louisville Metro Air Pollution Control District
Great Basin Unified Air Pollution Control District
Alabama Department of Environmental Management
Oklahoma Department of Environmental Quality
District of Columbia - Department of Energy and Environment
Douglas County Health Department (Omaha)
South Dakota Department of Environment and Natural Resources
Utah Department of Environmental Quality
Louisiana Department of Environmental Quality
Indiana Dept. of Environmental Management
Broward County Environmental Engineering and Permitting  Division
Missouri Department of Natural Resources
Washoe County Health District Air Quality Management Division
Nebraska Department of Environment and Energy
Shasta County Air Quality Management District
City of Jacksonville - Environmental Quality Division
Arizona Department of Environmental Quality
Nevada Division of Environmental Protection
Rhode Island Dept. of Environmental Management
Delaware Dept. of Natural Resources and Environment
Twenty-Nine Palms Band of Mission Indians
EPA Office of Air Quality Planning and Standards
Pinal County Air Quality Control District
Manitoba Conservation Air Quality Section
Connecticut Dept. of Energy and Environmental Protection
Huntsville Natural Resources and Environmental Management
Knox County Dept. of Air Quality Management
Forsyth County Office of Environmental Assistance and Protection
Chattanooga-Hamilton County Air Pollution Control Bureau
Tehama County Air Pollution Control District

New York-Northern New Jersey-Long Island, NY-NJ-PA