WTC asbestos wipe sampling and cancer risk analysis, December 2001
Machine-extracted title · confidence 85%
EPA memorandum on wipe sampling methods for asbestos in Lower Manhattan buildings, resuspension projections, and cancer risk estimates from WTC dust exposure.
NYC DEP’s imposition of the imsafe 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_000140189
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NYC-WTC_000140189Source: NYC Law Department, mirrored locally