NYC 9/11 Public Portal Document
DEC-12-2001 17;38 U 5 EPA REGI UN 2 F0 908 906 6182 F'.215/217
The ASTM method is iiuen,ded for quid : ;: t .duet contam1rratioti of building
surfaces and is intended as a gonezal assessment of the building. There re is no suggestion
i1t t e ASTM aaaethodthat t can be used to assess general health dsk from asbestos
s7 posune, nor does it suggest that all buildjug. t f - alaaintdiss6l tte'dae Icr~~eis!- _, _.
published inthe standard. The etb is genemUY appiiceb f!? the estimate of the
contentaraidan of asbestos fibers utFaees staxt$tia from appróxImare)y 1000 fibers per
square cendmcter ((/cmi2)
On December 3 two owfa c dust as mples ware taken from the 100 floor to determine
whether asbestos fibers were setded on swfaoea. The results are reported In asbestos
fibers per square centimeter of awface zeste& The following Summarizes the sample
results:
Sample 0620204 sampled in living room fr+otii table top
Result- 740 asbestos snuamres per square centimeter
Sample L1203-2 sampled fmn supply air diffuser in the 10* floor public hallway
Result - 550,00o asbest s4ucc zres per square enthrieter
The supply air „tills in tree hallway was (cued to have elevated levers of asbestos fibers
well above the recommended limit of 1000 oteres per upam ccniirncr.r, This
suggests that the veaali'1a iaa. syat was contaminated by asbestos when the bi'ilding
collapsed. . .-
The duct system should be cleaned by a professional duct cleaning cane eny using . .
vacuum and cleaning equipment designed for asbestos decontamination
Edward Olmsted
121X1/01 Tuff 14208 rTr,Rr NA Aogni Mah,
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