Editing Troy, Montana (section)

=== Vermiculite cleanup ===
{{See also|Libby, Montana#Vermiculite mine|label 1=Libby Vermiculite Mine}}
After citizens, media, and local government raised concerns, the [[United States Environmental Protection Agency]] began in 1999 to investigate the contamination of the area surrounding [[Libby, Montana|Libby]] and Troy from vermiculite mines in Libby, which were themselves contaminated with a toxic and easily crumbled form of [[tremolite]]-[[actinolite]] series [[asbestos]], sometimes named Libby Amphibole asbestos (LA).<ref name=":1" /> Removal actions began in 2000, and in 2002 the site was moved to the EPA's Superfund National Priorities List. In 2009, the EPA declared a Public Health Emergency (the first in the EPA's history) "to provide federal health care assistance for victims of asbestos-related disease."<ref name=":1" />

In 2015, an EPA review of toxicity and risks found that the cleanups had managed asbestos exposure risk effectively. By the end of 2018, the EPA had removed "more than one million cubic yards of contaminated soil," and area cleanup was completed that year, except for the location of the former mine, which is the disposal site of the contaminated soil. Contaminated construction materials were disposed of "in a specially designed landfill cell."<ref name=":1" /> The remaining contamination is limited to the forests and property in or near the former mine, with cleanup plans pending and with controls for higher exposures during wildfire fighting.<ref name=":1" />

The EPA transferred control of the site to the Montana Department of Environmental Quality in 2020.<ref>{{Cite web|last=Bolton|first=Aaron|title=EPA Moves To Transfer Oversight Of Libby, Troy Superfund Sites To Montana|url=https://www.mtpr.org/post/epa-moves-transfer-oversight-libby-troy-superfund-sites-montana|access-date=December 13, 2020|website=Montana Public Radio|language=en}}</ref><ref>{{Cite news|last=Brown |first=Matthew|title=US transfers care for towns polluted with asbestos to state|language=en-US|newspaper=Washington Post|url=https://www.washingtonpost.com/climate-environment/us-transfers-care-for-towns-polluted-with-asbestos-to-state/2020/07/01/80e0f6c8-bbc8-11ea-97c1-6cf116ffe26c_story.html|access-date=December 13, 2020|issn=0190-8286}}</ref>