ATC ASSOCIATES INC. - TEM ANALYSIS
1 LAB GROUP #: 5762 - 10/25/0.
Operator
Filter Type MCE 25 mm
Lab Sample No. 62256
Filter Area 385 mm^2
Client Spl. No. 42 Disk No.
Grid I.D.
Instrument I.D. EM 10 CRX
GO) Area 0.01124 mm" 2 Comments
I Screen Magnification 16,400X
6 ( 4.721 Struct Corspd. to 70 s~mm
No. GO to be Analyzed
Acc. Voltage 80 kV
structure Type Length I.D. of Structure Nor,/EDS
(Nonasb.
G0. Structure Element
><0 5um Chr s. Amphibole Nonasb. Ambig./ND
No Coord. No• F H C M < 5 umM 3
I
~ 1
f Z ~
I /
3 2 1I
1~-
I
I
11 unreelsled spectra J
Identif Y d! ■t
structures w in EDS Check diffraction for asbestos
1 Photo No. (from 1 in S asbastas- structur~W7 (LL 4)
containing samples) Grid acceptance:
Ratio
SOZundisaolve r, over ap Tot
Struct. = 0.5um & > 5:1 Aspect <lD% particulate coverage >50%
areasdappe gr
nfolded or q
N= Not Observed (BDB spectrum ar diffraction pattern) l l ue
Positive diffraction pattern properties conforming Unused portion
criteria observed.
to laboratory Identification of filter Chrysotile
For ebryesUle: 0.70am •peaind for (050) renseUon.,
the Iayer lIns repeat. streaking Avo/dad portion
0.63m spacing for or filter
of (110) and (f an) rstleeuo:w
Per .mphlbola: O.OSam layer Unit repeal. and
approx. PorUoa of filter
subisct
tion of to (Emm side) Amphibole
.5 raUo of non-twinned la line s pot spacing to ssamination
layer line repast distanes ( .53cm).
Ambiguous
conforming to laboratory AMPHIBOLES
V ' 60S spectrum criteria observed.
I Iden Ication
Fv Single Fiber (1-3 Intersections
B= Bundle (>5 fibers <1 fiber
C Cluster
Y= eLria
(» intersections)
- 1-3 fibers)
diameter ■part) 26mm flltar
Slappina Rul.s:
>50 ■/C.O. or In lot 4 C.O.
Arnosite
Crocidolite
Anthophyllite
Tremolite
Non —asbestos
'Vnn_Identified
NYC-WTC 000104133
OCR can misread numbers and units. Confirm readings against the page image before using them.
NYC-WTC_000104133Source: NYC Law Department, mirrored locally
Laboratory report containing transmission electron microscopy data and images for asbestos fiber identification from samples analyzed in September 2001.