TEM analysis lab report for sample 5648, Oct 9 2001

NYC 9/11 Public Portal Document

ATC ASSOCIATES INC. TEM ANALYSIS LAB GROUP # : 564^ - 10/'C9/ Lab Sample Ko Filter Type MCE 25 ram Cperacor ClisnT Spl. No NS KS■ £IR-IO/9-12 Filter Area 385 mrr*2 Inssrumenc I.D Grid I.D Disk No. Scr'Sen MagnificaLior. le ,, 4nQX (30) Area 0 . 01124 mm"2 Comments Acc. Vcltage 6C k( No. GO to be Analyzed _4 3.147 Spruce. Corspd. cc 20 s/mm^2

GO. Structure StrucLure Type Length I.D. of Structure N or EDS ^0.5 um (Nonasb. No Coord. No. F B C M > Sum Chrys. Amphibole Nonasb. Ambig./ND Elements) < 5 um I vz 7 //

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Photo No. (from 1 in 5 asliestos- Identify all atructurea using EDS Check diffraction for asbeatoa Jstore _______ i_______ ) ail unrepeated spectra*^ containing samples) Grid acceptance;! atructurea up to TOs/^m (l»t 4) <S0X undiaeolved [£er. fill overlapped or folded Struct. > O.Sum fie > 5:1 Aspect Ratio <10X particulate coverage >S0X coverage N= Not Observed (EDS spectrum or diffraction pattern) at leaat 2D unfolded or overlapped grid squares Totals Poiiitlve diffraction pattern properties conforming <5X holes or opaque areas F B C M > Sum to laboratory identifieation criteria observed. 'UnUMd portion Foi chrysotile; O.TOnm •pacing for (020) reflecUona, or niter Chrysotile O.SInm spseing for the layer line repeat, slrealcing •AToided portion of 1110) and (130) reflecUons. of niter Por amphiboles: 0.03nm layer Une repeat, and approx. Portion of filter (Smm wide) Xd ratio of aen«t*inned layer Une spot spacing to ■ubjecl to Amphibole layitr line repeat diatanee (C.S3nm). •■amination EOS spectrum conforming to laboratory Ambiguous identification criteria observed. AMPHIBOLES F= Single Fiber (1-3 intersections s 1-3 fibers) Amosite B= Bundle (>3 fiber* <l fiber diameter apart) C~ CSuiter (>3 InLeraecLlont) 2Smm nilar Crocidolite Non-asbestos lai Rulee: i---------- Anthophyllite Us Uolrix NSD= Mo Structurea Delected >50 s/G.O. or in iat 4 C.O. Tremolite Actinolite Non-Identjfied U:\DATA\PFIVaTS\ MIKSC\CAD0^EUa 9/22/88

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