NYC 9/11 Public Portal Document
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A S S 0 C I A T E S I N C.
September 27, 2001
ALC Environmental
115 W. 30th Street
New York, NY 10001
Attn: Mr.
Re: Report of TEM Analysis
Dear Mr.
microscopy (TEM)
Following are the results of transmission electron
samples from our Group No. 5569:
analysis of two PCM air
Client: Mid-State
Project Name : 375 Sou.tb d._.Avenue
Location: Apartments; PII 'Building 400
Samples received in TEM Lab: 09%27/01
transmitted to you
These results will confirm and document the data
conformance with the
today. The analyses were performed in strict
7402, Issue 2, August 15, 1994.
methodology of the NIOSH method
were examined at
Forty grid openings from each of the samples
relatively low magnifications (approximately 1,000X and 1o,000X)
greater than Sum in length and widths between 0.25um
for structures
Sum, and having a length-to -width ratio greater than 3:1.
and
PCM
These structures would be large enough to be observed by
-asbestos structures were detected in the samples in
analysis. Non
the following proportions:
sample gypsum cellulose F/CC aB
number Asbestos
11 0.0"s 100.0% 0.0
12 55.7% 44.3% 0.0
as asbestos.
As a consequence, no sample exceeds 0.01 F/CC
Gorycki, Director of
The analyses were supervised by Dr. Michael A.
Electron Microscopy. These analyses were performed by ATC d/b/a
Associates Inc. This report may be reproduced only in its
ATC
entirety and not without prior permission of this laboratory.
NYC-WTC 000095219
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