Asbestos TEM analysis results, Oct 2001

NYC 9/11 Public Portal Document

ATC ASSOCIATES INC. TEM ANALYSIS LAS GROUP 5609 - 10/05/01 Lab Sample No. 60035 Filcer Type MCE 25 mm Operator Clienc Spl. No. SHS-l>10-10/5-29 Filter .Arsa 385 mm^2 Instrument I.D. EM 10 CRX Grid I.D. ygY. Disk No. Screen Magnification 16,400X (GO) Area 0.01124 mm"2 Comments Acc. Voltage 8 0 kV No. GO to be Analyzed 4 ( 3.147 Strucc. Corsod. to 7Q s/mm^2.)

GO. structure Structure T>pe 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

3-^ 7 f)

Photo No. (from 1 in 3 as leoLoa- Identify all slructurea using EDS diffraction for -__ Checkc _________ aabeatoa £ lore, all unrepeated spectra— containing samples) [Grid acceptance: I _ structures up to TOa/Am (1>1 4) OOX undisBoived Hiler. overlapped or folded Struck = > O.Sum & > 5:1 Aspect Ratio <10X particulate coverage >60% coverage Totals Ns Not Observed (EDS spectrum or diffrscUon pattern) at leaat 20 unfolded or overlapped grid aquarea Poaitive diffraction pattern properties eoftforming <SX holea or opaque areas F B C M > Sum to laboratory identification criteria observed. ■Unused portion For ehryaoUIa: XTOnm spaaing for (020) reflsetions, of fliUr Chrysotile O.b3am ■pacing for the layer line repeat, streaking 'Avoided portion ■ of (110) and (130) refleetions. of filler Per amphiboles: O.Sanm layer Une repeat, and appro*. Portion of filter (Zmm Vido) 3.3 ratio of noo-lvinncd layer Une spot spacing to subject to Amphibole layer Une repeat distance (O.S3nni). euminetion

EDS spectrum conforming to laboratory Ambiguous idenUficatien criteria observed. AMPHIBOLES F= Single Fiber (1-3 Intersections = 1-3 fibers) Amosite a= Bundle (>3 fibers <1 fiber'diameter apart) C= Cluelar {>3 IntersecUonsl ZSinm filler Crocidolite Non —asbestos - -------- 1 Slopping Rules: L___ Anthophyllite M= Matrix I >60 s/C.0. or in IsL A C.O. NSDs No Slructurea Detected Tremolite Actinolite Non-Identified L:\DATA\PRrVATE\MlKEC\CADD\TEM3 9/22/06

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