NYC 9/11 Public Portal Document
I ATC ASSOCIATES INC. - TEM ANALYSIS
I Lab Sample No.
Client Sp:., No
6251
05
LAS GROUP # 5T59 - 10/25/0_
Filter Tyne MCE 25 mm
Filter Area 355 mmm -1
Operator L. -
Li Instrument I.D. EM 10 CRX
Screen Magnification 16.400X
Acc. Voltage 80 kV
Grid I.D.
(GO) Area O 01124 mm-2
No. GO to be Analyzed d
Disk No.
Comments
4.72: Struct. Corsud. to
,_
s'mm"2
I GO.
No Coord.
Structure Structure Type
No. F B C M
,0.5
< 5um
Length
ur`1 >. 5um Chr Ys. Amphibole
p
I.D. of Structure EDS
N or I/
nasb.
Nonasb. Ambi g./ND Elements)
J`7
1
1
1
1
Photo Na. (from 1 in 5 asbestos- Identify all structures using EDS Check diffraction for asbestos Store all unrepeated spectra -
containing samples) Grid acceptance: structures u to 70e nim (lot 4)
<50% undissolve 1 T. overiappe or e e
Struct. _ > 0.5um & > 5:1 Aspect Ratio
<10% particulate coverage >50% coverage Totals
Na Not Observed (EDS spectrum or diffraction pattern) at least 20 unfolded or overlapped grid squares
t/ Positive diffraction pattern properties conforming
<5% holes or opaque areas F B C M >, 5um
to laboratory identification criteria observed. Unused portion
For ahrysoUle: O.72nm spscln` far (020) resections. at filter Chrysotile
0.33nm spacing for the layer lne repeal, streaking Avoided portion
of (110) and (130) raneauons. of filler
Per amphiboles: 0.33nm layer line repeat. and appros. Portion of filler (2mm wide)
3.3 ratio of non-twinned layer line spat .poems m sublect to Amphibole
layer line repeat distance (O.SSnm). examination
t= EDS spectrum conforming to laboratory Ambiguous
identification criteria observed. AMPHIBOLES ~ ~ I
P= Single Fiber (1-3 Intersections = 1-3 fibers) AmoOlte
5= Bundle >3 fibers <1 fiber diameter apart) 23mm filter Crocidolite Non —asbestos
C= Cluster )>3 intersections) g(epping Ruie.: Anthophyllite
I,
M= Matrix
>30 or In let 4 G.O. Tremolite
NSD= Na Structures Detected Non —Identified
Actinolite
L•\DATA\PRtVATE\MiKEG\CADOVfEM3 5/22/90 i
NYC-WTC 000104272
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