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    • Nonattainment Area - Lead (Pb - 2008 Standard)

    Metadata Updated: July 24, 2025

    The Nonattainment Area - Lead (Pb-2008) dataset was updated on June 30, 2025 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 lead levels have not met the National Ambient Air Quality Standards (NAAQS) established in 2008 for lead and have been designated "nonattainment areas (NAA)". 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-lead-2008-area-information. A data dictionary, or other source of attribute information, is accessible at https://doi.org/10.21949/1529063

    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 July 24, 2025
    Metadata Created Date August 3, 2024
    Metadata Updated Date July 24, 2025
    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 July 24, 2025
    Metadata Created Date August 3, 2024
    Metadata Updated Date July 24, 2025
    Reference Date(s) July 1, 2004 (creation)
    Responsible Party Environmental Protection Agency (EPA) (Point of Contact)
    Contact Email
    Guid Nonattainment Area - Lead (Pb - 2008 Standard)
    Access Constraints Access Constraints: unrestricted
    Bbox East Long -66.6563152996962
    Bbox North Lat 44.8480972357142
    Bbox South Lat 18.4160513681412
    Bbox West Long -118.942987662869
    Coupled Resource
    Frequency Of Update weekly
    Harvest Object Id 30bd5879-0878-4e17-bbae-d0dfcd87e689
    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": [[[-118.942987662869, 18.4160513681412], [-66.6563152996962, 18.4160513681412], [-66.6563152996962, 44.8480972357142], [-118.942987662869, 44.8480972357142], [-118.942987662869, 18.4160513681412]]]}
    Progress onGoing
    Spatial Data Service Type
    Spatial Reference System
    Spatial Harvester True

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