- TEM ANALYSIS
ATC ASSOCIATES INC.
10/25/01
LAB GROUP #• 5761 -
Operator
Filter Type MCE 25 mm
Lab Sample No. 62192
Filter Area 85 mm
Disk No.
Client Sp1. No. 19
Grid ID.
Instrument I.D. EM 10 CRX Comments
(GO) Area 0.01124 mm"2 to 70 s/mm"2.!
Screen Magnification 16 400X 4 721 Struct Coranti
No. GO to be Analyzed 6
80 kV
Act. Voltage EDS
Length I.D. of Structure N ar✓ (Nonasb.
ture Type Len g
GO. Structure Swe 5gum Am hibole Nonasb. Ambig./ND Elements
No. 5um Chr s.
No Coord. F B C M < um
1
I
J
Check d E to or
asbestos- ldentifr all etructurea udn BDS structures u l0 705
(lit 4)
Photo No. (from 1 [o S To als
1
Grid acceptance:
containing samples) <50% undissol r. ores app or o e
<10% parUOulato coverage >50% coverage
Struct. _ > 0.5um & >
5:1 Aspect Ratio overlapped g rid ■titres
4
diffraction pattar0) at leaf! 20 unfolded or
N. <5% holes or o a ua areas
Not Observed (BOS s pectrum or
properties conforming Unused portion
Positive di ffraction pattern criteria observed. of filter Chry3otile
to laboratory identification Cur (020) rsMcuow.
Per ebrytotilr. 0fur spacing • n~ 4 n5 Avoided portion
tae isr llo
thme
0.55em .poise [or rsn.cuoea. of railer
or (110) and (1150) Fortson of sitar (2mm -idol Amphibole
OAuem ties spots. fee tppra>. subject to
[
For emphibolo: Jul lies spot apad~ b esamieation
of nedrFsaerrr
la sralne spot dlsn lanes l(O.t49em} Ambiguous
to laboratory /
■ppaaetrum conforming n17
AM ►te
208 .Warred.
o
Idea [icatloa criteria Non —asbestos
single Fiber (1-3 intereectiooa
P_ Ideti = 1-3 fibers) 25mm filler Crocidolite
shot diameter apart)
B= Bundle (>0 >S fibers <1 Rulan Anth op hyllite
Intarescuone) Stopping
C= Cluster
_ Tremolite N on-Identified
NYC-WTC 000104203
OCR can misread numbers and units. Confirm readings against the page image before using them.
NYC-WTC_000104203Source: NYC Law Department, mirrored locally
Laboratory report documenting transmission electron microscopy analysis of asbestos samples collected from a New York City Department of Education site in October 2001.