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Document / 40 pages

EPA memorandum on carpet asbestos testing, June 2002

Machine-extracted title · confidence 50%

Technical memorandum from EPA discussing ultrasonication testing for asbestos in carpets and HEPA vacuuming effectiveness.

NYC-WTC_000140040–000140079

Folder label: “EPA Cate Jenkins”

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NYC 9/11 Public Portal Document

occupied at the present time.

NYC DEP’s imposition of the unsafe 1% standard is compounded by their insistence on using the insensitive PLM method to detect asbestos. As documented by analyses of the exact same dust samples by both Region 2 and NYC DEP, PLM tests will find no detectable asbestos whatsoever, while the use of the more sensitive EPA transmission electron microscopy (TEM) method can show up to 5%.^’ A news story in the Wall Street Journal documents the hazard posed by the NYC DEP’s use of their 1% dust standard and the PLM method.^*

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NYC-WTC_000140062

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NYC-WTC_000140062Source: NYC Law Department, mirrored locally

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