U.S. GAO - Hazardous Materials: EPA’s Assessment of Sites That May Have Received Asbestos-Contaminated Ore from Libby, Montana (GAO-09-7SP, March 2009), an E-supplement to GAO-09-6R

Hazardous Materials: EPA’s Assessment of Sites That May Have Received Asbestos-Contaminated Ore from Libby, Montana (GAO-09-7SP, March 2009), an E-supplement to GAO-09-6R

Pabco Gypsum/Johns-Manville/Fiberboard, Street address unknown, Apex, Nevada
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EPA
Region
Location of facility Type of facility Amount
of ore
received
(in tons)
Did
EPA
visit
the
site?
Were
samples
taken?
Results of
evaluation
9 Street address unknown, Apex, Nevada Gypsum board manufacturer 80,655 Yes-May 9, 2000 Yes According to an EPA database compiled from W.R. Grace shipping invoices, 80,655 tons of vermiculite ore from the Libby mine were shipped to this site between March 1966 and May 1990. EPA collected 5 air, 17 soil, and 5 dust samples at this site. The air samples contained no detectable levels of asbestos; the soil samples contained less than 1-percent asbestos; and the dust samples were less than 10,000 asbestos structures per square centimeter of wiped surface. The soil samples were analyzed using polarized light microscopy (PLM) and the air and dust samples were analyzed using transmission electron microscopy (TEM). Since all of the samples were below levels that would trigger a cleanup action, EPA determined no further action was needed.

GAO-09-6R