EPA Science Advisory Board (SAB)

IRIS Assessment for Libby Amphibole Asbestos

EPA Designated Federal Officer (DFO):Diana Wong
202-564-2049
wong.diana-m@epa.gov
Responsible Committee/Panel:Libby Amphibole Asbestos Review Panel
A list of members can be found in the final report included in the Advisory Activity linked to this panel or committee.

BACKGROUND.

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Libby amphibole asbestos, found in vermiculite ore deposits near Libby, MT, is comprised of mixture of related mineral forms of amphibole asbestos: primarily winchite, richtorite and tremolite with trace amounts of magnesioriebeckite, edenite, and magnesio-arfvedsonite.

EPA's Office of Research and Development has requested the SAB to review EPA’s draft "Toxicological Review of Libby Amphibole Asbestos In Support of Summary Information on the Integrated Risk Information System (IRIS)." The draft assessment evaluates cancer and noncancer health hazards and exposure-response of Libby amphibole asbestos.


Agency Charge . (PDF, 10 pp., 941,107 bytes)

Agency Review Document(s):

PDF for Toxicological Review of Libby Amphibole Asbestos in Support of Summary Information on the Integrated Risk Information System (IRIS) (August 2011 Draft). (PDF, 467 pp., 4,805,784 bytes)