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    • This is a Non-Federal dataset covered by different Terms of Use than Data.gov.

    Post Primacy Aquifer Exemptions

    Metadata Updated: January 23, 2026

    This post primacy aquifer exemption data depicts areas exempted by the US EPA for Class II injection after the March 14, 1983 Primacy agreement between the US EPA and CalGEM. This dataset represents an expansion of the original primacy exempted areas based on aquifer exemption packages that were approved between 1985 and 2021.

    Access & Use Information

    Public: This dataset is intended for public access and use. Non-Federal: This dataset is covered by different Terms of Use than Data.gov. License: See this page for license information.

    Downloads & Resources

    Dates

    Metadata Created Date January 23, 2026
    Metadata Updated Date January 23, 2026

    Metadata Source

    Harvested from State of California

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date January 23, 2026
    Metadata Updated Date January 23, 2026
    Publisher California Department of Conservation
    Maintainer
    Identifier a7a43f53-b662-4efa-a3a2-69b1d1f20b55
    Data First Published 2021-05-14T00:21:33.000Z
    Data Last Modified 2022-05-25T00:00:00.000Z
    Category Natural Resources
    Public Access Level public
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Harvest Object Id 036062e8-f75d-4061-94f4-13f3589f1aaf
    Harvest Source Id 3ba8a0c1-5dc2-4897-940f-81922d3cf8bc
    Harvest Source Title State of California
    License http://www.opendefinition.org/licenses/cc-by
    Source Datajson Identifier True
    Source Hash 4ade448a4ece6e3eee4f0bb996dd7d9637201162eebcb629448affa226f3a785
    Source Schema Version 1.1

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