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    • Nonattainment Area - 8 hr Ozone (1997 Standard)

    Metadata Updated: October 23, 2024

    The Nonattainment Area - 8 hr Ozone (1997) dataset was designated on June 15, 2004 by the Environmental Protection Agency (EPA) and is part of the U.S. Department of Transportation (USDOT)/Bureau of Transportation Statistics (BTS) National Transportation Atlas Database (NTAD). This dataset provides detailed information about areas identified in the U.S. where ground-level ozone have not met the National Ambient Air Quality Standards (NAAQS) established in 1997 for ground-level ozone and have been designated "nonattainment areas (NAA)". This dataset also shows the nonattainment areas at the time of the 8-Hour Ozone (1997) National Ambient Air Quality Standards (NAAQS) revocation on April 6, 2015. These data are weekly from an OAQPS internal database. However, that does not necessarily mean the data have changed. For more information about this non-attainment area, please see the website https://www.epa.gov/green-book/green-book-8-hour-ozone-1997-area-information-naaqs-revoked.

    Access & Use Information

    License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

    Downloads & Resources

    Dates

    Metadata Date October 22, 2024
    Metadata Created Date August 3, 2024
    Metadata Updated Date October 23, 2024
    Reference Date(s) July 1, 2004 (creation)
    Frequency Of Update weekly

    Metadata Source

    Harvested from National Transportation Atlas Database (NTAD) Metadata

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Date October 22, 2024
    Metadata Created Date August 3, 2024
    Metadata Updated Date October 23, 2024
    Reference Date(s) July 1, 2004 (creation)
    Responsible Party Environmental Protection Agency (EPA) (Point of Contact)
    Contact Email
    Guid Nonattainment Area - 8 hr Ozone (1997 Standard)
    Access Constraints Access Constraints: unrestricted
    Bbox East Long -67
    Bbox North Lat 71.5
    Bbox South Lat 18.5
    Bbox West Long -171.5
    Coupled Resource
    Frequency Of Update weekly
    Harvest Object Id dce39823-1d71-4c84-857a-6697117ed966
    Harvest Source Id ee45e034-47c1-4a61-a3ec-de75031e6865
    Harvest Source Title National Transportation Atlas Database (NTAD) Metadata
    Licence This NTAD dataset is a work of the United States government as defined in 17 U.S.C. § 101 and as such are not protected by any U.S. copyrights. This work is available for unrestricted public use.
    Lineage
    Metadata Language eng; USA
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": [[[-171.5, 18.5], [-67.0, 18.5], [-67.0, 71.5], [-171.5, 71.5], [-171.5, 18.5]]]}
    Progress onGoing
    Spatial Data Service Type
    Spatial Reference System
    Spatial Harvester True

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