Asbestos fiber TEM analysis data sheet, Oct 2001

NYC 9/11 Public Portal Document

ATC ASSOCIATES INC. TEM ANALYSIS LAE GROUP # 0^21/01 Lab Sacpie No. (1331 Filcsr Tizpe MCE 2 5 nini operacor ucP Client Spi- No. 10 RiLter 385

Inscrumenc I.D. DM IC CRX Grid I.D. 42^ Disk No. Screen Magnification I£,40C)X (GO) .zprea 0-02224 mm^2 Commencs Acc Voltage EC) kV No. GO co be Anal 4 147 Scruoc 7C s/mm‘2

GO. Structure SlrucLure Type Length I.D. of Structure N or ‘ EDS ^0.5 um - (Nonasb. No Coord. No. F B C M S- Sum Chrys. Amphibole Nonasb. Ambig./NPj Elements) < 5 um

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Store all unrepeated spectra--^ Photo No. (from 1 in S asbestos- Identify all structurea using EDS Check diffraction for asbeBtoB containing samples) Grid acceptance;! structures up to 708/l?im (1st 4) <50X undiaaoivea filler, overlapped or /oldea Struct. = > 0.5um & > 6:1 Aspect Ratio <10% particulate coverage >50X coverage Na Not Observed (EDS ipeclrum or diffraction pattern} at least 20 unfolded or overlapped grid squares Totals f'OBltlve diffraction pattern properties conforming <6X holes or opacue areas F B C M > Sum Lj laboratory identification criteria observed. •Unused portion of filter for chrysotile: 0.73nm apeeing for (020) reflccUona, C.S3nm spacing for ths layer Une repeat, Btresking Chrysotile ■Avoided portion of (HO) and (130) reflecLona. Of filter Por amphiboles: O.a3nm layer line repeat, and approx. Portion of niter (2mm wide) 3.5 ratio of non-twinned layer line spot spacing to subject to exeminalion Amphibole layer line repeat distance (O.SSnm).

vZ= EDS spectrum conforming to laboratory i<lentlfication criteria observed. AMPHIBOLES Ambiguous F= Single Fiber (1*3 InlenecUone % 1-3 fibers) Amosite B= Bundle (>3 fibers <1 fiber diameter apart) ZSmm filler -------- 1 Stoppini Sulei: 1 Crocidolite Non-asbestos Ca Cluster (>3 intersectionai H- Halrir Anthophyllite NSD= No Structure. DetecLeU >50 t/G,G. or in tit 41 c.o. I Tremolite Actinolite Non-Identified L\DATA\PaiVATE\MiXEC\:ADDVtM: 9/22/98

CONFIDENTIAL, CITY_21MC100_003470285 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

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