NYC-WTC_000188722

NYC 9/11 Public Portal Document

ATC ASSOCIATES INC. TEM ANALYSIS GROUP #: 5609 - 10/05/01 Lab Sample No. 60036 Filler Type MCE 25 mm OoeraCor Client Spl. Wo. 5HS-l>10-lQ/5-29 Filter Area 385 min'll Instrument I.D. EM IJ CRX Grid I.D. Disk No. Screen Magnificacior. 16,400X {GO) Area 0.01124 mm^2 Comments Aco. Voltage 8 0 kV No. GO to be Analyzed ( 3.147 Struct. Corapd. Lo 70 s/nnn^2.)

Length I.D. of Structure EDS GO. structure Structure Type (Nonasb. No. Coord. No. >0.5 um > Sum F B C M < 5 um Chrys. Amphibole Nonasb. Ambig./ND Elements)

7/ J // 7

rX

Photo No. (from 1 in S asbestos- Identify all atructurea using EDS Check diffraction for asbestos Store all unrepeeted spectra — containing samples) Grid acceptance;! structurea up to 7nB/t?im (let 4) <S0X undlaaolved filter, overlapped or folded Struct, s > 0.5um ft > S;1 Aspect Ratio <10X particulate coverace >50% coverace Totals N- Not Observed (EDS spectrum or diffraction pattern) at least 20 unfolded or overlapped grid squares <5% holes ar opaque areas F B C M > Sum Positive diffraction pattern properties eonforming to laboratory identification criteria observed. ■Unused portion Por chrysotile: 0.73nm snaoins Car (020) reflections, of mur Chrysotile O.sanm spacing for the layer line repeat, streaking -Avoided portion of (110) and (130) reflections. of filter For amphiboles: 0.S3nm layer line repeat, and approx. II I Portion of niter (2mm wide) 3.3 ratio af non-t«inned layer lino spot spacing to subject Lo 11 1 sxamieatlon Amphibole layer line repeat distance (O.SSnm). EOS spectrum conforming to laboratory Ambiguous IdenttflcaUon criteria observed. AMPHIBOLES P= Single Fiber (1-3 Intersections 1-3 fibers) Amosite 3= Bundle (>3 fibers <1 fiber diameter apart) 25mm filler Crocidolite Non-asbestos Cs Cluster (>3 Intersections) --------- 1 stopping Huies: I------- Anthophyllite Ms Matrix NSD= No Structures Detected i >50 i/G.O. or In lat 4 3.3. Tremolite Actinolite Non-identified U\DaTA\ PRJVATE\ MlK8a\CADDV£M3 9/22/90

CITY_21MC100_003082833

NYC-WTC_000188722