TEM ANALYSIS
ATC ASSOCIATES INC. -
Operator
Filter Type MCE 25 mm
Lab Sample No. 62252 m "2 /
palter Area 3B
isk No.
Client Spl. No. 38 Grid I.D.
~RX Comments
01
Instrument J.D. EM
I (GO) Area 0 O1 ..4 mm"2 d. to 70 SIM-
4.121 Struct. Cors
Screen Magnification 16 400X 6
No. GO to be Analyzed
Acc. Voltage 80 kV EDS
I.D. of Structure N er ✓ (Nonasb.
Type Length
GO. Structure Structure
I L No Coord. No. F B C M
0.5 um
< 5 um
Sum Chr s. Amp hibole Nonasb. Ambig. / ND Elements
z
g
2
Z ii
CQ~
I
I
I
I
I
I
II
I (lot 4)
J
in o asoeawa-
`- Phato No. [tom 1samPlea)
-- - rid acceptance: "" "'_ -
r. over app
or e e Totals
containing <5a% undiaaoly coverage >50% coverage
O.Sum & > 5:1 Aspect
Ratio <10% particulate grid squares
overlapped
Struct. = least 20 unfolded or
diffraction pattern) at
N. Not Observed (SOS apectram or <5% holes or o n ue areas
properties conforming Unaasd portion
Pwltive d►ttncLLen pattern
IdenUfiCaUon criteria observed. of filter Chrysotile
to laboratory (020) Uof
li Molded portion
0.73am .paofn( for ii
~~ra
For chrpaoUle the l ger 11ne repeal. filter
O.fi3 ab spaolog for renaau°o..
Portion of filter (2mm aide) Amphibole
of (110) and (130) repeal. sad .pores. of io
0.03am layer IIns
For amPblbolssi taper line spot .pacing eaamleation
3.5ratio of non-telaaad
distance (0.03em)•
layer line re peat Ambiguous
✓ AMPHIBOLES
conforming
iteria bs to laboratory
SOS .ppectram
idenUfleatlon criteria nbeerved• Amosite
Non —asbestos
pben) 25mm filter Croeidolite
P= Single Fiber (1-3 intereecUona
fiber = 1-3
diameter apart) P1pn~Irr Anthophyllite
B= Bundle (>3 fiber' <1 Rne. .2
NYC-WTC 000104129
OCR can misread numbers and units. Confirm readings against the page image before using them.
NYC-WTC_000104129Source: 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.