TEM analysis data sheet, sample 59660, September 2001

NYC 9/11 Public Portal Document

ATC ASSOCIATES INC. TEM ANALYSIS n Lab Sample No. 5966Q LAB GROUP #: 5575 - 09/28/Ql Filter Type MCE 2S mm Operator Client Spl. No. T13 Filter Area 385 mm'^2 . Instrument I. D. EM 10 QRX Grid I.D. / G-^3 Disk. No. Screen Magnification 16,400X [GO) Area 0.01124 mm"2 Comments u Acc. Voltage 80 kV No. GO to be Analyzed 6 ( 4.721 Struct. Corspd. to 70 s/mm^2.;

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

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n Photo No, (from 1 in 5 aabeatoa- Identify all structures using EDS Check diffraction for asbestos Store ail unrepeated spectra — R containing aamplea) Grid acceptance;! istructures up to VOs/i^ni (Ist 4) <50% undiaaolved filter,, overlapped or folded

u Struct. = > Q.5um Je > 5:1 Aspect Ratio <10% particulate coverage >50% coverage Totals Ns Not Observed (EDS spectrum or diffraction pattern) at least 20 unfolded or overlapped grid squares Positive diffraction pattern properties conforming <5% holes or opaque areas F B C M > Sum to laboratory identification criteria observed. —UnuMd portion For chrysotile; 0.73nm snacini for (020) reflections, or niur Chrysotile O.aanm spacing for the layer line repeat, streaking —Avoided portion of (110) and (130) reflections. of filter For amphiboles: O.SSnm layer Une repeat, and approx. Portion of niter (Zmm vids) 3.3 ratio of non—twinned layer Une spot spacing to subject to Amphibole layer Une repeat distance (Q.SSnm). examlnaUon

n '/= EDS spectrum conforming to laboratory idenUrication criteria observed. AMPHIBOLES Ambiguous Ps Single Fiber (1-3 intersections s 1-3 fibers) Amoaite L.J Bs Bundle (>3 fibers <1 fiber diameter apart) ZSmm filtar Non-asbestos Crocidolite inUrweUoM) --------- 1 atoppin, M..; I------- Anthophyllite NSD= No Slructur.. Deteotod | >M ./G.O. or in H 4 C.O. Tremolite Actinolite Non-Identified U\D*T*\PRiVATE\MIXBC\C*DD'grE«a 0/22/08

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