NYC-WTC_000188636

NYC 9/11 Public Portal Document

ATC ASSOCIATES INC. TEM ANALYSIS LAB GROUP #: 5668 - 10/11/01

Lab Sample No. 60926 Fl leer Type MC£25 rnrn Opera-or /</ Client Spi. Nc. NSHS>SZR-10/ll-gl Filler Ax'£i 3gS mm*^2 Instrument I.D. EM 10 CRY Grid I.D Disk No. Screen Magnification 16,400X (GO) Area Q.0L124 mm"2 Comments Acc. Vclcage 80 kV Mo. GO to be Anaiycec 3.147 Strucc. Corspd. bo 70 s/inm‘^2.1

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)

I lE^ s A

Photo No. (from 1 in 5 ssbestoa- Identify all atructurea uaing EPS Check diffraction for asbeatoa Store all unrepeated spectra— containing samples) Grid acceptance:! structures uo to 70a/^m {1«L 4) <S0X undiaaolveo filter, overlapped or folded Struct. = > 0.5um & > 5:1 Aspect Ratio <10X particulate coverage >50X coverage Totals Ns Not Observed (EDS spectrum or diffraction pattern) at least 20 unfolded or overlapped grid iquarea Positive diffraction pattern properties conforming <SX holes or opaque areaa F B C M > Sum to laboratory identification criteria observed. •Unused portion For chryeoUlo: 0.73nm spacine for (020) r«n«etiana, of niter Chrysotile 0.53nm apaelnf for the layer line repeat, streaking -Avoided portion of (IIQ) and (130) renecUona. er filter For amphiboles: 0.a3nm layer line repeat, and approx. (Smm wide) 3.S ratio of non-Lwinned layer line spot spacing to Amphibole layer line repeat distance (O.S3nm). \/s EDS spectrum conforming to laboratory Ambiguous identification criteria observed. AMPHIBOLES F= Single Fiber (1-3 Intersections = 1-3 fibers) Amosite Bs Bundle (>3 flben <1 fiber diameter apart) C= Cluster (>3 intersections) ___________ Z5mm filler ____f Stopping Rules: I Crocidolite Non-asbeatos , Anthophyllite Ma Matrix NSD= No Structures Dotoeted >30 >/C.O. or In lai 4 G.Q. Tremolite Actinolite Non-Identified UX DATA\P1UVATE\ MIKEC\CADDVKK3 o/aa/Bo

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NYC-WTC_000188636