Asbestos fiber TEM analysis data sheet, Oct 2001

NYC 9/11 Public Portal Document

ATC ASSOCIATES INC. TEM ANALYSIS LAE GROUP ti: 10 -•-20/01 Sample No . Type MCE 35 ;iim (ioei-ator cent Spl, No r ArcCt J55 luiu Instrument: I.D. E.M IP D;isk No Scree.u Magnification (GO) Area 0.01124 mm' Ccmmencs Acc. Volcage S3 kV No. GO co be Analyzed 4 147 Struct:. Corscd. Lc 70 s/mr.^z.j

Length I.D. of Structure EDS jSO;___ Structure Structure Type (Nonasb. No Coord. No. >0.5 um

3E (g F B C M < 5 um > Sum Chrys. Amphibole Nonasb. Ambig./ND Elements)

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Stare all unrepeated spectra—^ Photo No. (from 1 in 5 asbestos- Identify all etructurea ueing EDS Check diffraction for aabeatoa containing samples) Grid acceptance:! structures up to TOs/An (ut ♦) <5056 undisaolved filter, overlapped or folded Struct. = > O.Sum ik > 3:1 Aspect Ratio <tOX parUcuiate coverage >50% coverage Totals N= Not Observed (EDS spectrum or diffraction pattern) at least 20 unfolded or overlapped grid squares Positive diffraction pattern properties conforming <SX holes or ooaoue areas F B C M Sum lx> laboratory identlflcalion criteria observed. luied portion for chrysotile: O.Tanm spacing for (020) reflections. of niur Chrysotile l.SDnm spacing for the layer line repeat, streaking -Avoided portion if (110) and (130) reneeUona. of filter ?or amphiboles: O.SSnm layer lilts repeat, and approx. Portion of niter (Emm wide) 3.3 ratio of non-t»lnncd layer line spot spacing to subject to Amphibole Layer line repeat diatance (0.&3nm). sxamineUon

SDS spectrum conforming to laboratory identification criteria observed. AMPHIBOLES Ambiguous F= Hingis Fiber (1-3 intersections = 1-3 fibers) Amosite Bs bundle (>3 fibers < 1 fiber diameter apart) SSmni rutar Crocidolite Non-asbestos C- Cluster (>3 Interacctlonsi —----- 1 Slopping Rulas; 1------- Anthophyllite Ms Matrix I >30 s/C.O. or in 1st 4 C.O. NSD: No Structures Detected Tremolite Actinolite Non-Identified LXDATAXPRIVATrvMlKKCXCADtrTSMa 0/22/01

CONFIDENTIAL, CITY_21MC100_003470242 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

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