Asbestos TEM analysis results, Oct 2001

NYC 9/11 Public Portal Document

ATC ASSOCIATES INC. TEM ANALYSIS LAB GROCJP tf: 5609 - lO/QS/01 Lab Sample No. 60044 Filter Type MCE 25 mm Operacor Client Spl. Mo. SHS-l>10-lQ./5-37 Filter Area 385 mm"2 Instrument: I.D. EM 10 CRX Grid I.D. Disk No. Screen Magnification 16,40QX (GO) Area 0.01124 mm*^2 Comments Acc. Voltage 80 kV No. GO to be Analysed _4 ( 3.147 Struct. Corsod. to 70 5/mm'^2.)

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

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—Photo No. (from 1 in S aabeatoa- identify all atructurag uaing EDS Chee c diffraction for aabeatoe 1 tore all unrepeated spectra — containing samples) Grid acceptance:! structures up to 70a/>?inr (l«t 4) <SOZ undiasalved filler, overlapped or folded Struct. = > O.Sum Jc > S:l Aspect Ratio COX particulate coverage >S0X coverage Totals N= Not Obaarved (EQS apectrum or dlffraetion pattern) at least 20 unfolded or overlapped grid squarcH PoaiUve diffraction pattern propertlea conforming <5X hoiea or opaque areae F B C M > Sum to laboratory identification criteria observed. ‘Unused portion Fer chryaolila; 0.73nfn apaelnc far (020) renectlona. O.Mnm ■pacing for the layer line repeat, streaking flf niter Chrysotile ’Avoided portion of (110) and (130) reflecUona. or niter For amphiboles: O.S3nm layer line repeat, and appro*. Portion of niter (2mm wide) 3.3 raUo of non-twinned layer Une spot spacing to subject Lo axaminaUon Amphibole layer Une repeat distance (o.SSnm).

EDS spectrum conforming to laboratory idenUficatlon criteria observed. AMPHIBOLES Ambiguous Single Fiber (1-3 Intersections a 1-3 fibers) Ambaite Ha Bundle (>3 fibers <l fiber diameter apart) 23mm fllUr Crocidolite Non-asbestos £ ------ 1 I------ , Anthophyllite NSD= No Slruclure. DotneUd | i/S-O- °r In '»> * C-°- | Tremolite Actinolite Non-Identified L:\DATA\PIUVATX\mXSC\ CADD'J’XHa 8/22/98

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