TEM air analysis results, Oct 9 2001

NYC 9/11 Public Portal Document

ATC ASSOCIATES INC. TEM ANALYSIS •LA3 GROUP #: 5649 - 10/09/01 Lab Sample No. 60672 Filter Type MCE 25 mm Operator Client Spl. No. N5HS-EIR-10/9-02 -Filter Area 385 niin~2 Instrument l.D. EM 10 CRX Grid I.D. Disk No Screen Magnification 16,400X (GO) Area 0.01124 mm^2 Comments Acc. Volcage 80 kV No^. GO co be Analyzed _4 f 3..147 Struct- Corspd. to 70 s/mm^2.)

GO. Structure structure Type Length l.D. of Structure EDS ^0.5 um (Nonasb. No Coord. -No. F B C M Sum Chrys. Amphibole Nonasb. Ambig./ND Elements) < 5 um '7/ / Pz- Lf 1^' I) w /l

Store all unrepeated spectra—^ Photo No. (from 1 in 5 as testoa-Identify all structurea uaing EDS Check diffraction for aabeatoa containing samples) Grid acceptance:) structurea up to VOs/^m (18t 4) <S0X undiaaolvea filter, overlapped or folded Struct = > O.Sum & > S:L Aspect Ratio <10X particulate coverage >5OX coverage, N= Not Observed (EDS spectrum or diffraction pattern) at least 20 unfolded or overlapped grid squares Totals Positive diffraelion pattern properties conforming <5X holes or opaque areas________________________ F B C M > Sum to laborator; Identification criteria observed. 'Unuaad portion For chrysotile; Q.TSnm soaclns for (020) rsnscUoni, of filler ' Chrysotile O.S3nm spaeing for the layer line repoel. streaking -Avoided portion of (110) and (130) refleelions. of filler For amphiboles: O.Sanm layer Uns repeat, and approi. (Hmm wide) a.& ralia of non^lvlnned layer line spot spacing lo I Bubjecl to exeminaUoo Amphibole layer line repeal distance (O.S3nm). v/= EDS spectrum conforming to laboratory Ambiguous idenUfication criteria observed. amphiboles P= Single Fiber (i-3 intersections s 1-3 fibers) Amosite B= Bundle (>3 fibers <1 fiber diameter apart) _________________ Zimm niUr Crocidolite Non-asbestos MS “jSta I-------- ISUPPU, Rui™ I----- Anthophyllite NSD= No Slructura DuUctud | >8° ./C.O. or In l.t , C.O. Tremolite Actinolite Non-Identified L;\BAT*\PRIVATr\lllKEC\CAnDVKUa 8/22788

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