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    • Water-Quality and Borehole Geophysical Data Associated with Uranium Background Concentrations at the Homestake Superfund Site near Milan, New Mexico: 2016 (ver. 1.2)

    Metadata Updated: January 7, 2026

    The datasets contained herein were collected as part of a cooperative U.S. Geological Survey (USGS) and U.S. Environmental Protection Agency (EPA) project entitled "Field Investigations to Help Support the Assessment of Background Concentrations for Uranium at the Homestake Mining Company, Superfund Site near Milan, New Mexico, July 2016." Groundwater samples were collected from pre-selected wells and analyzed for metals (including uranium), alkalinity, ammonia, common ions, nitrogen, gross alpha/beta, radium isotopes, Radon-22, uranium isotopes, stable isotopes, sulfur isotopes, nitrogen isotopes, helium-4, dissolved gases, tritium/helium-3, carbon-14 and chlorofluorocarbons. Groundwater samples were collected using micropurge, volumetric, and passive samplers. Seven different laboratories analyzed the samples; separate datasets containing the results from each laboratory are provided in this data release. Microsoft excel .xlsx, xml, and tab-delimited text files are included for most dataset. A subset of the files are in .csv format.

    Access & Use Information

    Public: This dataset is intended for public access and use. 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 Created Date January 7, 2026
    Metadata Updated Date January 7, 2026

    Metadata Source

    Harvested from DOI USGS DCAT-US

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date January 7, 2026
    Metadata Updated Date January 7, 2026
    Publisher U.S. Geological Survey
    Maintainer
    Identifier http://datainventory.doi.gov/id/dataset/USGS_59b98caae4b091459a54da83
    Data Last Modified 2020-08-27T00:00:00Z
    Category geospatial
    Public Access Level public
    Bureau Code 010:12
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Metadata Catalog ID https://ddi.doi.gov/usgs-data.json
    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 1b9b1e5e-a2e0-4103-9fb1-3ac0bb556494
    Harvest Source Id 2b80d118-ab3a-48ba-bd93-996bbacefac2
    Harvest Source Title DOI USGS DCAT-US
    Metadata Type geospatial
    Old Spatial -107.88969, 35.210418, -107.836308, 35.268274
    Source Datajson Identifier True
    Source Hash 7733aaa938848b152d4073b4db0407e1178dc907c9470ae7007249aacd0d129d
    Source Schema Version 1.1
    Spatial {"type": "Polygon", "coordinates": -107.88969, 35.210418, -107.88969, 35.268274, -107.836308, 35.268274, -107.836308, 35.210418, -107.88969, 35.210418}

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