From 1963 to 1992, Zonolite/W.R. Grace leased the Former Zonolite Facility from Oldon Limited Partnership in order to operate an exfoliation plant. Zonolite/W.R. Grace received asbestos-containing vermiculite concentrate (by rail) from the Zonolite mine in Libby, Montana, and produced Zonolite attic insulation and Monokote fireproofing material. In 1992, Zonolite/W.R. Grace removed all equipment from the building, washed down the building and conducted confirmation air sampling. The building was vacant from 1992 to 1997.
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From sometime in the late 1990’s through 2000, JPS Acquisition Elastomerics Company leased the building from Oldon for use as a warehouse. At present, Oldon continues to own the Former Zonolite Facility, which is used by a neighboring business, DOS Concrete Service, as a storage yard and warehouse.
The Site consists of several properties with asbestos-containing soils, including the Former Zonolite Facility, and adjacent properties. Private parties own all site-related properties with the exception of the railroad right-of-way, which the City of Easthampton acquired through eminent domain.
START completed the PA/SI and submitted the final report to the OSC, who used it and the recommendations included in a 2006 site-related Health Consultation prepared by the Agency for Toxic Substances and Disease Registry (ATSDR)/Massachusetts Department of Public Health (MassDPH) to conclude that a CERCLA time-critical removal action is required to address the risks at the Site. The OSC documented this recommendation in a Site Investigation Closure Memorandum dated 22 May 2009.