TEM analysis lab report for sample 5652, Oct 10 2001

NYC 9/11 Public Portal Document

ATC ASSOCIATES INC. TEM ANALYSIS LAB GROUP 56u2 - 10.10/01 Laij Samcle No. r' 0 511. Fil^er Type MCE 11 Operacor Client Spl. No K5HS» EIR-IC .'10-11 Fl I-er Area 2SE Instrcmsnt EM 10 CRX Grid I.D. Disk No. Scrcjer. Magnification 16 4OCX IGO) Area 0.022 mm* 2 Commencs ACC. Volcage 8 0 kV No. GO co be Analysed 4 ! 3.14 7 scrucc. Cci-SDd 7 0 s/Cnn’

GO. Structure structure Type Length I.D. of Structure EDS (Nonasb. No, Coord. No. >0.5 um F B C M < 5 um > Sum Chrys. Amphibole Nonasb. Ambig./ND Elements) / a 0 A

(U__ J_ __ __ Photo No. (from 1 in 5 asbestos- Identify all atructurea using EDS Check diffraction for aabeatoB Store all unrepeated spectra—^

containing samples) Grid acceptance:! structures up to TOa/^n (let +) <S0X undiasolvea filter, overlapped or folded Struct = > 0.5um A > 5:1 Aspect Ratio <10X particulate coverage >50X coverage Totals Ns Nut Observed (EDS spectrum or diffraction pattern) at least 20 unfolded or overlapped grid squares <SX holes or opaoue areas F B C M > Sum Pciltivo diffraction pattern properties conforming to laboratory identification criteria observed. -Unuead portion For chrysotile; 0.73nm spacing for (020) reflections. of filter Chrysotile O.hanm spacing for the layer line repeat, streaking .ivotded portion of (no) and (130) refleetiona. of fitter Per amphiboiea: O.Mnm layer line repeat, and approx. Portion of filter (Zmm vide) 3.2 ratio of non-lwinned layer line spot spacing to subject to Amphibole layer line repeat dlatanea (O.Sanm). axaminatioQ >v/= EDS spectrum conforming to laboratory Ambiguous Identification criteria observed. AMPHIBOLES F= Single Fiber (1-3 Intereecdone & 1-3 fl be re 1 Amosite Bs Bundle (>3 fiber* <1 fiber diameter apart) ZSmm niUr Crocidolite Non-asbestos C= Cluster {>3 Intersections) stopping Rulest I------ H= Matrix Anthophyllite NSD= No Structures Detected >50 a/C.O. or tn l»t 4 C.O. Tremolite Non-Identified Lj\DATA\PRIVAT2\ M1KSC\ CADD'^E ua s/z2/9a Actinolite

CONFIDENTIAL, CITY_21MC1OO_OO3469916 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

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