ANALYSIS
ATC ASSOCIATES INC. - TEM
LAB GROUP # 5761 - 10/25/01
Operator
Filter type MCE 25 mm
Lab Sample No. 62180
Filter Area 385 nun"2 }
Client Spl. No. 07 Disk No.
Grid I.D.
Instrument I.D. EM 10 CRX Comments
(GO) Area 0.01124 mm"2
Screen Magnification 16.400X 4.721 Struct Corsod. to 70 s;mm
No. GO to be Analyzed 6
I Arc. Voltage 80 kV
Structure structure TYPO
Length I.D. of Structure N or
✓
EDS
(Nonasb.
j
GO. um gum Chrys. Amphibole Nonasb. Ambig./ND Elements
Vo1Coo l No. F H C M
E
n
I
I
Li
I
I
I
spectra
Store all unrepeated
heck to for
ucUon
Identify all structures cuing BDS ubeut(ist 4)
Photo No. from 1 In S asbestos- rid acceptance: tuns 70./&m
containing samples) <S0% undivaoIV r. overlapped or o e O g
Ratio age
Struct. = > 0.9um & > 5:1 Aspect <10% particulate coverage >50% cover
grid squares
' • dUfnation pattern) at least 20 unfolded or overlapped F B C M >1 5um
N. Not Observed (BD9 •peatrum or <37L holes or o a ue erase
PnparUas conrorming
Pwltiva dlffraaUfn pattern criteria observed. Unused portion
to laboratory identification of niter Chrysotile
0.79am •peel for (020) reflections,
For ehryoUlr. •tieakial Al lftIt portion
0.59nm •pacing for the lq•r life npna4 of Hoer
of (110) and (190) ntleeUana• Portion of niter 2mm *tee) Amphibole
opal u i apProa.
For Uo of lse: 0.09nm layer line line spot spacing to
aubJacl b
ssamlaaUon
9.5 ratio of non -twinned Layer
layer line repeat distanee (0.59nm).
AMPHIBOLES
Ambiguous
8DS specwm conforming to laboratory
IdenUneation criteria observed. AmODlte
F. single Fiber (1-9 lntereectians •t 1-3 fl )
25mm filter Crocidolite Non-asbestos
diameter apart)
B= Bundle (>3 intersections)
fibers <1 fiber
Rules: Anthophyllite
C= Cluster (>9 steppleg
Y= Matrix
oeteceea
,30 •/C.0. or to tat t C.O.
Tremolite
4 , innlite
Non -Identified
NYC-WTC 000104191
OCR can misread numbers and units. Confirm readings against the page image before using them.
NYC-WTC_000104191Source: NYC Law Department, mirrored locally