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Superfund Site Report: LIBBY ASBESTOS SITE
 
 
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  • Site Description
    Stage of Clean-up: Study Underway

    Conditions at Proposal (February 26, 2002): The Libby Asbestos site includes an inactive vermiculite mine located on Vermiculite Mountain in northwestern Montana, and portions of the town of Libby. The mine is approximately seven miles east northeast of the town. Although mining of Vermiculite Mountain dates back to the 1890s, large-scale mining was initiated by the Zonolite Company in the 1920s. W.R. Grace acquired the Zonolite Company in 1963 and continued mining operations until September 1990. The vermiculite mine has been operating under Montana Department of State Lands Operating Permit 00010 since 1972, under a State-approved reclamation plan. Of approximately 1200 acres of patented mining claims, 865 are known to be disturbed by mining activities. The ore body from which the vermiculite ore was mined contains significant occurrences of amphibole asbestos. Processing of the vermiculite ore, with amphibole asbestos intermixed, caused high dust and airborne releases of fine asbestos fibers. These fine asbestiform fibers have been linked by the Agency for Toxic Substances and Disease Registry (ATSDR) to certain kinds of lung disease and abnormalities. Amphibole asbestos contamination associated with the ore processing has been found in processing plants, residential yards, and school yards in the town of Libby and between the mine and the town. Residences, schools, and businesses received vermiculite free of charge from W.R. Grace.  More...
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  • Threats and Contaminants
    Contaminants Detected

      Ground
    Water
    Surface
    Water
    Air Soil Other
    ASBESTOS (FRIABLE)    X
    CHROMIUM    X
    COPPER COMPOUNDS    X
    NICKEL COMPOUNDS    X
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  • Pre-Cleanup Rankings
    EPA Hazard Ranking System scores for LIBBY ASBESTOS SITE:

    Less Hazard National Average More Hazard
    0%         50%         100%

    No HRS scores were associated with this site


    Rank Superfund sites in the U.S., MONTANA, or in LINCOLN County by EPA Hazard Ranking Scores.

    *Note: EPA's Hazard Ranking System is designed to screen and prioritize sites for the Superfund program, based on limited data available at time of listing. These scores are not based on a comprehensive risk assessment of the site and do not reflect conditions after initiation of cleanup work.
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  • Site Information
    Site Name: LIBBY ASBESTOS SITE
    EPA ID: MT0009083840
    Address: 952 EAST SPRUCE STREET
    LIBBY, MT 59923
    Site Ownership: Unknown
    Category of Site: No data
    Date of Final Listing on the NPL: October 24, 2002
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  • Potentially Responsible Party (PRP) Involvement
    Number of PRPs currently associated with this site: Unknown

    List Potentially Responsible Parties identified by U.S. EPA as associated with the LIBBY ASBESTOS SITE Superfund site.
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