I
ATC ASSOCIATES INC. - TEM ANALYSIS
01
LAB GROUP #: 5762 - 10!25
Filter Type MCE 25 mm Operator
Lab Sample No. 62239
Filter Area 385 mm"2
Client Spl. Na. 25 Disk No.
Grid I.D.
Instrument I.D. EM 10 CRX Comments
(GO) Area Mm2
0.01124
Screen Magnification 16 4DOX to 70 simm 2. i
6 ( 4.72: Struct. Curs d.
No. GO to be Analyzed
Acc. Voltage 80 kV
EDS
Length I.D. of Structure Nor ✓ (Nonasb.
GO. Structure Structure Type Amphibole Nonasb. Ambig./ND Elements
~0 5 um >. 5um Chr s.
No Coord. No. F BC M < 5um
I ' I I
/)
I
I
I
Spectra
eat Store all uarepeaLed
etructurieeruction for
Check
in 5 asbestos- Identify all structures us(n BDS to 70e/&n% (let 4)
`Photo No. from 1
Grid acceptance:
containing samples) <S07G undlssolve r, overlapped or o e'
coverage
Totals 1
Struct =) O.Sum & > 5:1 Aspect Ratio <to% particulate coverage >S0% grid squares
dlftraeuon patters) at least 20
unfolded or overlapped F B C M > 5um
N= Not Observed (RDS eP°Ctruca or <SR holes or opaque areas
prepertles conforming
✓ n positive diffraction pattern criteria observed•
to laboratory identification
Unused portion
of titer Chrysotile
For 0brysutils: 0.79nm
rpeaL s~atil:eli• avoided peruse
O.S9nm spawn for ~• la slayer li::S of filler
of (110) and (190) retie lave apPros. (2mm etd-) Amphibole
For unpWbo,": O.O9nsd layer Una re peat. and POn ° bled e ar
MUc of non-tvinnad t■yar ling spot spacing tO seele O se
3.0
layer ling repeat distance (0.09nm). Ambiguous
BDS spectrum conforming to laboratory AMPHIBOLES
identification criteria observed.
Amosite
intersections - 1-3 fibers) 25mm filter Non—asbestos
Fa Single Fiber (1-3 fiber diameter apart) Crocidolite
B- Bundle ((>S fibers <1 Anthophyllite
c= Cluster (>3 intersection■)
stopping Rules;
N- ber.:. ,gin .ic 0 0r In let 4 c.o. Tremolite 'vnn_IdenLifted
NYC-WTC 000104116
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NYC-WTC_000104116Source: NYC Law Department, mirrored locally