TEM analysis data sheet, NYC BOE site, Oct 2001

NYC 9/11 Public Portal Document

ATC ASSOCIATES INC. TEM ANALYSIS LAE GROUP #: 5748 - 10. 25 ^31

Sample No. 6::058 Filter Type MCE 25 nm Operacoi Client Spl. No 4 Filter Area 3 85 mrr,"2 Instrument I.D. EM 2 Q CRX Grid I.D. Disk No.

Screen Magnificat-cn 400X (GO) Area G.Q2134 mm***? Comments

Acc. Voltage SO kV No. GO CO be Ariblyoed 147 Gcruci , Gorspd. co 79 s/rnfr'^2.^

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

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C ! PhoLO No. (from I in 5 usbestoa- identify all structurea using EDS Check diffraction for asbestos Store all unrepeated spectra containing samples) Grid acceptance: L structures up to TOs/i^im (l«l 4) <50% undissolvea filter, overlapped or folded Struct. = > O.Sum k > 5:1 Aspect Ratio <10% particulate coverage >50% coverage Totals. Ns Not Observed (EDS apeclrum or diffraction pattern) at least 20 unfolded or overlapped grid squares Positive diffraction pattern properties conforming <5% holes or opaque areas F B C M > Sum to laboratory identlficalion criteria observed. -Unused portion Per chryioUls: Q.73nm spacing for (020) reflectioni. Of niter Chrysotile 0.53nm spacing for Ine layer line repeat, streaking -Avoided oortion of (UO) and (130) reneeUons. of filler Por amphiboles: Q.33nm layer line repeat, and approx. Pertion of filter (Znim vide] 3.5 raUo of non-tvinned layer line spol spacing to subject to examination Amphibole layer line repeal distance (O.SSnm). vA: EDS spectrum conforming to laboratory Ambiguous identification criteria observed. AMPHIBOLES ps Single Fiber (1-3 Intersections = 1-3 fibers) Amosite B= Bundle (>3 fibers <1 fiber diameter apart) 25mm riltar Crocidolite Non-asbestos M- mXTm’' I--------- 1 suppin, Bule.: --------- Anthophyllite NSD= No Slruoture. DoUolod | ■ZC.O. or in l.t 4 S.O. | Tremolite Actinolite Non-Identified L:\ItATA\.»RlVATE\l<IKEC\CAD0VEW3 9/22/98

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