TEM analysis results for bulk sample, Oct 2001

NYC 9/11 Public Portal Document

ATC ASSOCIATES INC. TEM ANALYSIS LAB GROUP 5609 - 10./05/01 Lab 3anpLe No. 'Liier T^/pe MCE mm Ooeracor Client, Spl. Mo. Filcer Area 3 = 5 rnm"2 . __ :nst;ninenc I.D. EM 10 lex i-D- Disk No. Screen Magnificacion i.LL±iLL<, ;G0 i Area O . 01124 T'Ti"2 Comments Acc. Voltage 3C <V No. GO CO be Ar.axvoed _4 3.14" Struct. Corscd. co mm ' 2 . ;•

Jia structure Structure Type Length I.D. of Structure EDS (Nonasb. ar (0 2, 77M7 No, Coord. No. F B C M >0.5 um < 5 um > Sum Chrys. Amphibole Nonasb. Ambig./ND Elements)

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^Photc No. (from 1 in 5 aBbeatoa- J________ ________ i Identify all atructurea uainr BPS Check diffraction for aabeatoa store all unrepeated spectra-^ containing sampiea) Grid acceptance: I structures up to 70a/l?un (I«t +) <S0X undlaaoivad filter, overlapped or foiciea Struct = > 0.3um k > 5:1 Mpect Ratio <10% particulate coverage >50% coverage Ns Not Observed (EDS spectrum or diffraction pattern) at least 20 unfolded or overlapped grid squares Totals <5% hotea or opaque areas ,/= Positive diffraction pattern properties conforminc F B C M > Sum to laboratory identification criteria observed. •Unuaed portion P(ir chryvotile: 0.73nm spacing for (020) refleetlona, «f niter O.bOnm spacinc for ths layer line repeat, streaking Chrysotile o( (110) and (130) reflections. ‘Avoided portion ar niUr For amphiboles: O.OSnm layer line repeat, and approx. PorUon «r niter (Smm wide) 3.S ratio of non-twlnned layer line spot spacing to subject to saamlnaUon Amphibole Uyer Une repeat distance O.ft^nm). EDS spectrum conforming to laboratory Ambiguous identification criteria observed. AMPHIBOLES F= Single Fiber (1-3 Inleraectiona = 1-3 fibers) Amosite B= Bundis (>3 fibers <1 fiber diameter apart) ___________ 25mm HlUr C= Cluster (>3 intersections) Crocidolite Non—asbestos ------ 1 Stopping Rules: '........... Anthophyllite K= K.tri. >S0 a/G.O. or In 1st 4 0.0. ! Tremolite MSDs No Structure. Deteotod Actinolite Non-!dentified UXBAVAXPRIVATrsMIKSC^CADD^rmS B/22/sa

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