Asbestos fiber TEM analysis data sheet, Oct 2001

NYC 9/11 Public Portal Document

ATC ASSOCIATES INC. TEM ANALYSIS LAE GROUP »: 573-" - 10-'21 Lab Semple No. 61825 icer Typ-e MCE 2 5 mm Client 3pl. No. 4 Filter Area 385 mm Instrument I.D. EM IC CFDl Grid I.D. Y7C Disk Nc. Screen Magnification 16,4Q0y. (GO) Area 0,01124 mm Commencs Acc. Vol cage 8 0 kV No. GO co De Analyzed 147 Struct. CersDd. to 7C s.'mm'l.;

GO. structure I'tructu" Type Length I.D. of Structure EDS >0.5 um (Nonasb. No, Coord. No. !f b C M Sum Chrys. Amphibole Nonasb. kmbig./ND Elements) < 5 um /

I

Photo No. (from 1 in 5 asbestos-* Identify al] structures using EDS Check diffraction for asbeatos store all unrepcated spectra containing samples) Grid acceptance^ structures up to TOs/i^im (let 4) Struct. = > O.Sum A > 5 1 Aspect Ratio <S0X undiaaolvea filter, overlapped or folded

Ns riot Observed (EDS speclrum or diffraction pattern) <10X particulate coverage >50X coverage at least 20 unfolded or overlapped grid squares Totals <SX holes or opaque areas F B C M > Sum Positive diffraction pattern properties conforming til laboratory identificatlan criteria observed. •LInuied portion For ehrysoLlle: D.73nm spacing for (020) reflectlona, of niter Chrysotile Q.SSnm spacing for the layer Une repeat, streaking -Avoided portion of (110) and (130) reflecbnna. or niter For amphiboics: D.53nm layer line repeal, and approx. Portion of niter (2mm wide) 3.5 ratio of non-twinned layer line spot apaeing Is subject Lo examination Amphibole liiysr line repeat distance (O.SSnni). \/= EDS spectrum conforming to laboratory icenUrication criteria observed. AMPHIBOLES Ambiguous Pt= Single Fiber (1-3 intersectione s 1-3 fiber*) Amosite 8- Bundle (>3 fiben <1 fiber diameter apart) C= Cluster (>3 intersection*) 25mm filUr P stopping Rules: I Crocidolite Non-asbestos H= Matrix NSD« No Structures Detected Y 7~1 >50 1/G.Q, or in lit 4 q Anthophyllite Tremolite Actinolite Non-Identified L:\DATA\PRIVATE\MlKEC\CADD\rEM3 0/2Z/9B

CONFIDENTIAL, CITY_21MC100_003470279 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

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