NYC 9/11 Public Portal Document
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A S S O CA 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.
transmission electron microscopy (TM)
Following are the results of
our Group No. 5569:
analysis of two PCM air samples from
Client: Mid -State
Project Name: 375 Southend Avenue
Location: Apartments 3L and 3H, Building 400
Samples received in TEM Lab: 09/27/01
data transmitted to you
These results will confirm and document the conformance with the
performed in strict
today. The analyses were August 15, 1994.
Issue 2,
methodology of the NIOSP method 7402,
the samples were examined at.
Forty grid openings from each of
magnifications (approximately 1,000X and 10,000X)
relatively low 0.25um
and widths between
for structures greater than Sum in length
ratio greater than 3:1.
and 3um, and having a length -to -width
These structures would be large enough to be observed by PCM
the samples in
analysis. Non-asbestos structures were detected in
the following proportions:
sample gypsum cellulose F/CC as
number Asbestos
0.0% 100.0% 0.0
11
55.7% 44.3% 0.0
12
0.01 F/CC as asbestos.
As a consequence, no sample exceeds
Michael A. Gorycki, Director of
The analyses were supervised by Dr.
Electron Microscopy. These analyses were performed by ATC d/b/a
ATC Associates Inc. This report may be reproduced only in its
this laboratory.
entirety and not without prior permission of
NYC-WTC 000095342
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