9 datasets found
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Federal
Fixed-Guideway Transit Stations (National) - National Geospatial Data Asset (NGDA) Transit (Stations)
Department of Transportation —
Version 2004 of the Fixed-Guideway Transit Network is a network database of the nation's fixed-guideway transit systems (NTAD). The data set covers systems in cities... -
Federal
Nonattainment Area - Lead (Pb - 2008)
Department of Transportation —
Non-attainment and maintenance areas for the United States and its territories (NTAD). The standard for the Lead NAA is 0.15 micrograms per cubed meter. For more... -
Federal
Nonattainment Area - Particulate Matter - 2.5 24 hr (2006)
Department of Transportation —
Non-attainment and maintenance areas for the United States and its territories (NTAD). For more detailed information on this dataset, see the Overview Description in... -
Federal
Nonattainment Area - Particulate Matter - 2.5 Annual (1997)
Department of Transportation —
Non-attainment and maintenance areas for the United States and its territories (NTAD). For more detailed information on this dataset, see the Overview Description in... -
Federal
Nonattainment Area - Sulfur Dioxide (SO2 - 2010)
Department of Transportation —
Non-attainment and maintenance areas for the United States and its territories (NTAD). For more detailed information on this dataset, see the Overview Description in... -
Federal
Nonattainment Area - Particulate Matter - 10 (1990)
Department of Transportation —
Non-attainment and maintenance areas for the United States and its territories (NTAD). For more detailed information on this dataset, see the Overview Description in... -
Federal
Nonattainment Area - Sulfur Dioxide (SO2 - 1971)
Department of Transportation —
Non-attainment and maintenance areas for the United States and its territories (NTAD). For more detailed information on this dataset, see the Overview Description in... -
Federal
Nonattainment Area - Sulfur Dioxide (SO2 - 1978)
Department of Transportation —
Non-attainment and maintenance areas for the United States and its territories (NTAD). For more detailed information on this dataset, see the Overview Description in... -
Federal
Nonattainment Area - 1 hr Ozone (1979)
Department of Transportation —
Non-attainment and maintenance areas for the United States and its territories (NTAD). The standard for the Ozone 1 hour NAA is 0.12 ppm. For more detailed...
9 datasets found