TEM ANALYSIS
ATC ASSOCIATES INC. -
LAB GROUP # 5761 - 10/25/01
Operator !/
Filter Type MCE 25 mm
62206
Lab Sample No. mm2
Filter Area 36
Client Spl. No. 33 Disk No.
Grid I.D.
Instrument I.D. EM 10 CRX Comments
(GO) Area 0.01124 mm"2
to 70 s/mm"2
Screen Magnification
16 40OX 4.721 Struct. Cots d.
No. GO to be Analyzed 6
Acc. Voltage 80 kV EDS
N or ✓
~Le~ngth I.D. of Structure (Nonasb.
GD. Structure S4iowr° type Ambig./ND Elements
No. Chr s. Am hibole Nonasb.
No Coord. F B C M
—1i
spectraJ
(lot 4)
containing sampled) -""
undissolve r. overlapped or
rolaaa TT t-
J Struct = > 0.5um & > 5:1
N= Not Observed (BDB
V'
Aspect Ratio <10% particulate coverage
least 2s unfolded or
spectrum or diffraction pattern) <5% holes or fopaque area
Chry90tile
ehrysoule: c.73nm .pee for (0211) mnmuons. Avoided portion
For layer ltas re peat.
0.53nm epaMes for the suwkina or filter
of (110) and (130) reneeuo°e. Portion of niter (P.mm .ids) Amphibole
tins reptt, wd apprsa. subject to
For amphibolar. 0.3em layer apse)-g to seamisaUca
s.5 ratio of non-l~lnned layer line spot
layer ►ins npsat distance (O.am). Ambiguous
v in laboratory AMPHIBOLES
/= CDs sppecaatrum observed.
idenutfaauon criteriaa Amosite
F- Single Fiber (1-3
Intersections = 1-3 fitter') 25mm niter Crocidolite Non asbestos
<i fiber diameter apart)
B= Bundle (>7 fibers
slapping Rules:
AnthoP h yllite
C= Cluster(>3 Intersections)
- taatria ,.0 ./C.O. er in lot 4 0.0. Tremolite N on —Ide ntified
NYC-WTC 000104216
OCR can misread numbers and units. Confirm readings against the page image before using them.
NYC-WTC_000104216Source: 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.