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Search for "Criteria Pollutants" - The top results (relevance sort) are listed below:
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\"geo.data.gov\"32 Results beginning with...
  • Nonattainment Area - Nitrogen Dioxide (NO2 - 1971)
  • Nonattainment Area - 8 hr Ozone (2008)
  • Nonattainment Area - 8 hr Ozone (1997)

  • \"Trimble0 Results

    NCSU Data Collection

    [ Hide ] Possible Related Terms:
    Carbon Monoxide, Lead, NItrous Oxide (NOx), Nonattainment Area, Ozone, PM10, Sulfur Oxide (SOx)

    Important Legacy denotes outdated data. A more recent version likely exists. Consider an "External Data Source" option linked above, or click the Collection link for updated source options.
    TitleDateSorted in Descending OrderCollectionExtentScaleMD
    NTAD: Non-Attainment Areas: Nitrogen Dioxide
    Legacy
    2004 National Transportation Atlas Databases (NTAD) 2004United States, Puerto Rico  Metadata Link
    NTAD: Non-Attainment Areas: Ozone
    Legacy
    2004 National Transportation Atlas Databases (NTAD) 2004United States, Puerto Rico  Metadata Link
    NTAD: Non-Attainment Areas: Particulate Matter
    Legacy
    2004 National Transportation Atlas Databases (NTAD) 2004United States, Puerto Rico  Metadata Link
    NTAD: Non-Attainment Areas: Sulfur Oxides
    Legacy
    2004 National Transportation Atlas Databases (NTAD) 2004United States, Puerto Rico  Metadata Link
    NTAD: Non-Attainment Areas: Carbon Monoxide
    Legacy
    2004 National Transportation Atlas Databases (NTAD) 2004United States, Puerto Rico  Metadata Link
    NTAD: Non-Attainment Areas: Lead
    Legacy
    2004 National Transportation Atlas Databases (NTAD) 2004United States, Puerto Rico  Metadata Link