Asbestos TEM micrograph data sheet, Oct 26 2001

NYC 9/11 Public Portal Document

ATC ASSOCIATES INC. TEM ANALYSIS LAE GROUP #: 577F - 10/26

Lab Sample No, 613 Fil::er T\'ps MCE 25 mm jperator / f ' Clie'nc Spl. No. 17 Filter Area 38 5 mm'^2 Instrument I.D. BY 10 CF.y. Grid 1.D. Cisk No. Screen Magnification -6,4OOX (GO) Area 0 01124 mm"2 Comments Aco. Voltage 8 3 kV Nc. GO to be .Analyzed ( 1.147 Struct. Corsoc 70 s/mnri.'

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

1?

Photo No. [from 1 in 5 asbestos- Identify all atructurea using EDS 1 Check diffraction for asbestos Store all unrepeated spectra containing samples) Grid acceptance;! structures uo to TOs/^m (l«l 4) <50% undisaolvea filter? overlapped or folded struct. > D.bum te > 5:1 Aspect Ratio <IOX particulate coverage >S0X coverage Totals V= Not Observed (EDS spectrum or dirfraetion pattern) at least 20 unfolded or overlapped grid squares Foliitive diffraction pattern properties conforming <5% holes or opaque areas F B C M > Sum to laboratory identiflcatioR criteria observed. Unused portion of niter Poi chrysotile: 0.73nm spacing for (020) rsfleclions, 0.53nm spacing for the layer line repeat, streaking Chrysotile Avoided portion of (110) and (130) reflectiom. of filler For amphiboles: O.&anm layer line repeat, and approx. Portion of niter (2mm wide) 3.5 ratio of non-tvlnned layer line spot spacing to subject to examination Amphibole layur line repeat distance (O.SSnm).

EDil spectrum conforming to laboratory IdcnUficaUon criteria observed. AMPHIBOLES Ambiguous F= Single Fiber (1-3 Intereections = 1-3 fibers) Amosite B« Bundle (>3 fibers <1 fiber diameter apart) M= ZSmm niter ____________________ _______ iscppln. Rui.... I_____ Crocidolite Non-asbestos Anthophyllite NSD= Ho Slruelur.. DelecUicI j >50 «/C.0. or In lit * C.O. Tremolite Actinolite Non-Identified L.\MTA\PKIVATE\MIICEC\CADD\rE«3 8/22/98

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