TEM analysis data sheet, sample 59761, September 2001

NYC 9/11 Public Portal Document

ATC ASSOCIATES INC. TEM ANALYSIS r'A LAE GROUP #: 5579 - 09/29/01 Lab Sample No. 59761 Filter Type MCE 25 mm Operator Client Spi. No. T38 Filter Area 385 mm'^2 Instrument I.D. EM 10 CRX Grid I.D. Disk No. n (GO) Area 0.01124 mm^2 Screen Magnification 16,40QX Comments

Acc. Voltage 80 kV No. GO to be Analyzed __6 (4;721St2£UCt^Cor^2A^t^70s/m^^

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

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Photo No. (from 1 in 5 aabeatoa- Identify all atructurea using EDS Check diffraction for asbeatos Store all unrepeated apectra— containing samples) atruclurea up to TOa/i^m (1>1 4) R Grid acceptance:! <50% undisaolvea niLerr overlapped or folded Struct. = > Q.Sum & > 5:1 Aspect Ratio <10% particulate coverage >50% coverage N=: Not Observed (EDS spectrum or diffraction pattern) at leaat 20 unfolded or overlapped grid aquares Totals Positive diffraction pattern properties conforming <5% holes or opaque areas F B C M > Sum to Laboratory identification criteria observed. ■Unused portion Por chryaolile: 0.73nm ■pacing for (020) reflectionB, 0.&3nm spacing for the layer line repeat, streaking of fitter Chrysotile Avoided portion of (110) and (130) reflectiona. of filter Por amphiboles: O.S3nm layer line repeat, and approx. Portion of filter (2mni wide) 3.S ratio of non-Lwinned layer line spot spacing to subject to examination Amphibole layer line repeat diatanee (O.&Snm).

EDS spectrum conforming to laboratory identification criteria observed. AMPHIBOLES Ambiguous Fs: Single Fiber (1-3 intersections s 1-3 fibers) Amoaite B= Bundle (>3 fibers <1 fiber diameter apart) C= Cluster (>3 intersections) i c,oL—t 25mm HlUr Crocidolite Non-asbestos M= Matrix I----------- ' stopping Buies, t----------- - Anthophyllite NSD= No Structures DeUcUd | >50 s/C-O- or in tit * C.Q. | Tremolite Actinolite Non-Identified k\DATA\PRIVATE\MiKgG\CADD\J-EX3 9/22/98 R

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