EPA Environmental Dataset Gateway
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United States Environmental Protection Agency
Class 1 Areas
A "Class 1" area is a geographic area recognized by the EPA as being of the highest environmental quality and requiring maximum protection. Class I areas are areas of special national or regional scenic, recreational or historic value for which the Prevention of Significant Deterioration (PSD) regulations provide special protection. These data were compiled based on EPA's list of mandatory Class I areas and Region 8 listing of non-mandatory Class 1 areas for three tribes. Spatial data are from National Park Service, U.S. Forest Service, U.S. Fish and Wildlife, and U.S. Census Bureau.
Regional and state scale mapping and visualization.
Time Period of Content
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None. Please check sources, scale, accuracy, currentness and other available information. Please confirm that you are using the most recent copy of both data and metadata. Acknowledgement of the EPA would be appreciated.
Environment and Conservation
U.S. Environmental Protection Agency
U.S. Environmental Protection Agency, Region 8
mailing and physical address
Metadata Reference Information
Metadata Date Stamp:
Metadata Standard Name:
FGDC Content Standard for Digital Geospatial Metadata
Metadata Standard Version: