TEM asbestos analysis results, Oct 2001

NYC 9/11 Public Portal Document

ATC ASSOCIATES INC. TEM ANALYSIS LAB GROUP #: 5741 - 10/23/01 Lab Sample No. 62031 Filter Type MCE 25 mni Operator Client Spl. No. 72-3 Filter Area 38.S mm"2 /\/X Instrument I.D. EM 10 CRX I.D. Disk No. Screen Magnification I6,4QOX (GO) Area 0.01124 mni*2 Comments Acc. Voltage 80 kV No. GO to be Analyzed 4 ( 3.147 Struct. Corspd. to 70 s/tnm*~2.)

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

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Photo No. (from 1 in 5 as lestoa- Identify all atructuree uaing EDS Check diffraction for aabeatoa SLore all unrepeated apectra— containing aamplea) Grid acceptance:! atructurea up to 70a/&n (lai 4) <SOX undisaolvea filLer. overlappeci or folded Struct. = > O.Sum & > 5:1 Aspect Ratio <10X particulate coverage >SOX coverage Totals. Ns Not Qbaerved (EDS spectrum or diffraction pattern) at least 20 unfolded or overlapped grid squares Positive diffraction pattern properties conforming <SX holes or opaque areas F B C M > Sum to laboratory identification criteria obaerved. -Unused portion For chrysotile: Q.Tanm spacing for (020) renections, of niter Chrysotile O.S3nm spacing for the layer line repeat, streaking Avoided portion of (110) and (130) renections. of filler For amphiboles: 0.53om layer line repeat, and approx. Portion of niter (2mm wide) 3.8 ratio of non-twinned layer Une spot spacing to •ubjecl to examination Amphibole layer line repeat distance (O.S3nm). \/= EOS spectrum conforming to laboratory identification criteria obaerved. AMPHIBOLES Ambiguous F= Single Fiber {1-3 intereectiona = 1-3 fiben) Amosite Bundle (>3 fibera <1 fiber diameter apart) C= Cluater (>3 intenectiona) SSinm niter Crocidolite Non-asbestos ------- 1 Stopping Rules: 1--------- - Anthophyllite H= Matrix NSDs No SLrucluree Detected [ >S0 «/C.O. or in lat 4 C.O. Tremolite Actinolite Non-Identified 1.;\DATA\PRIV*TE\MIKSC\CADD\TEM3 9/22/98

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