NYC 9/11 Public Portal Document
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S 1 MC.
A S S O C I A T E
September 26, 2001
ALC EnvirOnt. antaa
w. 30rh
c `rO=
Attn: Mr.
a,e: Report c_` TEM Lyeis
Dear Mr.
(TEM)
Following are the results of % m'. eion electron microscopy
from our Group No. 5556:
ana.,vsis of eleven PCM a':_ s'-rPies
•"-^-.ter "
Client
Southend Avenue
Project Name: 345 and 355 Buildings 100 and 200
Location: Hallways and Apartments,
09/26/01
Samples received in TEM L,ab:
you
document the data transmitted to
These results will confirm and conformance with the
performed in strict
today. The analyses were 7402, Issue 2, August 15, 1994.
methodology of the NICSH method
at
of the samples were examined
Forty grid openings from each(approximately 1,000X and 10,000X)
relatively low magnifications 0.25um
in length and widths between
for structures greater than Sum greater than 3:1.
-to -width ratio
and 3uia, az.d having a length to be observed by PCM
large enough
These structures would be ztr:ctures were detected in
analysis. Asbestos and non-asbestos
proportions:
the samples in the following
sample chrysotile gypsum cellulose fiber
glass F/CC as
Asbestos
• number
0.0% 6.2% 0.0
3 0.0% 93.8•'1
0.0% 0.0% 0.005
4 22.2% 77.8%
76.9% 0.00 23.1% 0.0
5 0.0%
6 0.0: 55.0% 0 . 0% 45.0% 0.0
76.2% 9.5% 14.3% 0.0
8 0.0% 0.0
13 0.0% 77.3% 9.1% 13.6% 0.0
14 0.0% 100.0% 0.0% 0.0%
0.0% 100.0'% 0.0% 0.0% C.0
17 0.0% 27.7% 0.001
3.6% 68.7% 33.3°% 0.0
19
20
0.0%
0.0%
66.7%
42.0%
0.0%
0.00 58.0% 0.0
NYC-WTC 000120949
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