Vermiculite Intermountain, 333 W. 100 South, Salt Lake City, Utah
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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
8 333 W. 100 South, Salt Lake City, Utah Former exfoliation facility 43,795.4 Yes-February 4, 2000 Yes According to an EPA database compiled from W.R. Grace shipping invoices, 43,795.4 tons of vermiculite ore from the Libby mine were shipped to this site between July 1953 and September 1991. This company later moved its operations to 733 West 800 South in Salt Lake City, where it operated under the name Intermountain Insulation Company. (The Intermountain Insulation site is listed separately in this database.) EPA found that the company began operations in 1940 and manufactured and distributed Zonolite insulation, Monokote structural steel fireproofing spray, Terralite vermiculite soil conditioners, masonry fill, and concrete and plaster aggregate. The vermiculite processing facility, including the furnace and smokestack, was demolished in 1986, and the railroad bed that served the facility was removed. The site was a vacant, graveled, rectangular lot located east of a power substation and south of a sports complex. It was in the middle of a downtown city block, and surrounded by active commercial establishments. Results of surface and subsurface soil sampling conducted at the site indicated several areas where asbestos was present in concentrations equal to or exceeding 1-percent and one sample that contained 18-percent asbestos. These samples were analyzed using polarized light microscopy (PLM). Asbestos was also present in buildings on adjacent properties, perhaps due to decades of foot traffic between the buildings. On the basis of this information, EPA determined that the site needed to be cleaned up. EPA completed a portion of the cleanup in 2004 and a potentially responsible party (PRP) completed the cleanup of a part of the site in 2005. The remaining portion of the site which contained contaminated soils was underneath an asphalt parking lot. EPA negotiated an Administrative Order on Consent (AOC) with the property owner, other responsible parties, and a prospective purchaser to maintain the asphalt cap to prevent the release of asbestos. The AOC was signed on November 14, 2007. If the property is redeveloped and the asphalt parking lot is removed, EPA will oversee the cleanup of the asbestos.

GAO-09-6R