NYC 9/11 Public Portal Document
ATC ASSOCIATES INC. - TEM ANALYSIS
LAB GF.OUP 4 5'5 - 10 22 5 0-
Lab Sample No. 62552 F11_ er Type M CP 25 Tm O _otrat_r - '- `i
Client Sp1. No 4' Filter Area 295
mm/22
Instrument I.D. EM 10 CB( Grid t C' Disk N .
Screen Magnification 16,40OX (GO I Area 0.011Z4 mrn 2 Comments
Jkcc. Voltage 80 ky No. GC to .7e Analyzed 4 _VCt =Sort. Cr 7!0
GO. Structure Structure Type Length I.D. of Structure EDS
N or,/
o Caord. No. F B >0 5 um (Nonasb.
N 5um Chrys. Amphibole Nonasb. Ambig./ND. Elements)
Lac —3- )
I T
t
~ I
= __
111111
Photo No. (from 1 in 5 asbestos-
containing samples)
___ ___
Identify all structures usinc EDS
d acceptance:
__ ____
Check diffraction for asbestos
___
structures uc to 70e iFfim (let 4)
___ ___
Store all unrepeated spectra
Struct = 0.5um & > 5:1 Aspect Ratio <50%
0S undiseo)ve I er. overappe or o e
1<10% particulate coverage >50% coverage Totals
N- Not Observed (EDS spectrum or diffraction pattern) FaL least 20 unfolded or overlapped grid squares
Positive diffraction pattern properties eonfarnung < 7C ho1es or o a tie areas
r D t. IV! i 0 U II1
to laboratory identification criteria observed.
Far hrysotLs: 0.73im sp.ctog far (020) rofleeuea..
Unused
of filte
portion I I
0.5.7nm spacing for the layer line repeat. streaking Chrysotile
of (110) and (170) reflection.. Avoided portioe
of (titer
For ampbibalea: 0.37nm layer lies repast, and appros. Portion of filter (2mm rode)
0.5 ratio of son-tinned layer line spot .pacing to subject to Amphibole
layer line repeat distance (0.I3nm). esaminauoo
EDS spectrum conforming to laboratory
identification criteria observed. AMPHIBOLES Ambiguous
g
Fe Single Fiber (1-3 intersections = 1-3 fibers) Amosite
R= Bundle (>3 fibers (1 fiber diameter apart) 25mm filter
C= Cluster (>3 intersections) Crocidolite Non -asbestos
M= Matrls Stopping Rules: Anthoph y llite
NSUn Na Structures Detected >50 ./0.0. or In tat 4 G.O. TremoIite
Actinolite Non —Identified
L•\DATA\PRIYATE\MIXEC\CADO%yE)13 0/22/98
NYC-WTC 000104312
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