been compared to the established AHERA criteria for the purposes of referencing an established
regulatory limit.
Laboratory analysis detected no asbestos fibers present in the samples collected. Analytical
results are shown below in Table 1.
Table 1 Asbestos Air Sampling
Sample No. Location Results — Asbestos Concentration
North Building
NB-01 1' Floor by Escalator None detected
NB-02 1' Floor Gymnasium — Center None detected
~NB-03 3rd Floor Hallway by Room N301
None detected
NB-04 3 Floor Elevator Lobby No.1 None detected
NB-05 5th Floor Hallway by Room N557 None detected
NB-06 5th Floor by Escalator None detected
NB-07 7th Floor Room N740 None detected
NB-08 7th Floor Room N736 None detected
South Building
SB-01 1 Floor Hallway between S138 & S136 None detected
SB-02 1' Floor Theatre #3 None detected
SB-03 3td Floor Northern Corridor None detected
SB-04 3 Floor Southern Corridor None detected
SB-05 5th Floor Library — Center None detected
SB-06 5th Floor by Elevator Bank None detected
SB-07 7th Floor Southern Corridor None detected
SB-08 7th Floor Northern Corridor None detected
Trailers
W-103 Trailer #W103 None detected
W-105 Trailer #W105 None detected
W-107 Trailer #W107 None detected
W-109 Trailer #W109 None detected
W-112 Trailer #W112 None detected
W-101 Trailer #W101 None detected
H-103 Harrison St. Trailer #H103 None detected
H-101 Harrison St. Trailer #H100 None detected
Asbestos in Dust
PSI collected 8 microvacuum samples from alternate floors from within the North and South
Buildings and 8 representative air samples from each of eight of the Trailers on January 3l ,
2001. Dust samples were collected by microvacuum and analyzed by Transmission Electron
Microscopy (TEM) in accordance with American Society for Testing and Materials (ASTM)
Method D5755-95. TEM has the ability to distinguish between asbestos structures and non-
asbestos structures. The subject ASTM methodology reports analytical results in asbestos
2 of6
BMCC
Environmental Testing
NYC-WTC 000106393
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NYC-WTC_000106393Source: NYC Law Department, mirrored locally