Asbestos TEM analysis results, Oct 19 2001

NYC 9/11 Public Portal Document

ATC ASSOCIATES INC. TEM ANALYSIS LAB GROUP #: 5730 - 10/19/01 Lab Sample No. 617Q5 Filter Type MCE 25 mm Operator Client Sol. No. 15 Filter Area 385 mm*? Instrument I.D. SM 10 CRX Screen Magnification 15,40QX Grid I-D. (GO) Arsa 3O_ 0,01124 min~2 Disk No. Comments Acc. Voltage 80 kV No, GO to be Analyzed 4 ( 3.147 Struct. Coxspd. co TO s/mtn^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 Chrys Amphibole Nonasb. Ambig./ND Elements) < 5 um

Photo No. (from 1 In 5 aabeatoa- Identify all atructurea uaing BPS Check diffraction for aabeatoa Store all unrepeated apectra — containing samples) Grid acceptance;! atructurea up ito VOo/Am (l"t ■») Struct. = > 0.5um de > 5:1 Aspect Ratio <S0X undiaaolvea filter, overlappe^oF •foToed^^^ <10X particulate coverage >SQX coverage Ns Nol Observed (EDS spectrum or diffraction pattern) at least 20 unfolded or overlapped grid iquarea Totals Positive diffraction pattern properties conforming <5X holes or opaque areae F B C M > Sum to laboratory identification criteria observed. -Unuaed portion Por cbrywotile; O.TSnm spaclns for (020) reflecUons, or niur Chrysotile O.S3nm tpaelnc for the layer line repeat, streakiac of (110) and (130) reflections. 'Avoided porUon or filler Por amphiboles: 0.33nm layer Une repeat, and approx. Portion of niter (2mm Vido) 3.3 ratio ot non-l«lnned layer line epot spacing to aubjecl to eiamlaatlon Amphibole layer line repeat diatancs (O.A3nm). v/s EDS spectrum conforming to laboratory Ideatlfieation criteria observed. AMPHIBOLES Ambiguous Ps Single Fiber (1-3 Interaeetlons s 1-3 fibers) Amosite Be Bundis (>3 fibers <1 fiber diameter apart) Z&RiRi nilar Crocidolite Non—asbestos

□ I_______ Sloppin, Bulec I______ Anthophyllite NSD= No Structuro* Dotocted Tremolite Actinolite Non-Identified kxDATAXPHIVA-reXMlKECXCADDSXBXa 8/22/18

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