NYC-WTC_000230536

NYC 9/11 Public Portal Document

ATC ASSOCIATES INC. TEM ANALYSIS LAB GROG? it: 5592 - lO/O’ Lab SampLa No. 52900 Filter Tyne MCE 2 5 -nm Operator CP Client SpL. No PS234M-gS-lQ/2-Qo leer Arsa 385 inuCZ __

InsCrumen!; I.D DM 10 GRX Grid r.C. Disk No.

Scx'een Magnif.Lcation 16,4(.1 (JX (GO) Area Q . 01L24 Ccmmenc.3

Acc. Voltags 3 3 kV No. GO CO be Analyzed 3.147 Struct. Cerspd. to ?0

Length I.D. of Structure EDS GO. structure ’ll* (Nonasb. No. >0.3 um No Coord. If b C M < 5 um > Sum Chrya. Amphibole Nonasb. Ambig./ND Elements)

M f-i <

J_______ _______ t Photo No. (from 1 in 5 as seatoa-* Identify ail atructurea using EPS Check diffraction for aabestOB Stare all unrepeated spectra—^ containing samples) Grid acceptance:! structures up to 70*/Am (l>t 4) <90X undiBBoived ^Uter^'averlappeao^ialaea^^ Struct. = > a.Sum k > 3:1 Aspect Ratio <1QX particulate coverace >S0X coverace Totals M= Not Observed (EDS spectrum or diffracUon pattern) at least 20 unfolded or overlapped grid squares Positive diffraction pattern properties conforming <3X hoiee or opaque ireae F B C M > 5am to laboratory Identification criteria obaerved. •Unuaed portion Par ehijMiilK XTSnin snacing for (OSO) raflacUon*. af filter Chrysotile O.bDnra apaoing for Iha layer line repeat, atreaking 'Avoided portion of (110) and (130) reflection*. af filter For amphiboles: O.S3ain layer Une repeat, and approx. Portion of niter (8mm wide) 3.3 ratio af non-tvianed layer line apet spacing la ■ubJecL to Amphibole layer Une repeat dletanoe (0.93nm}. examination

v/s ZDS spectrum conforming to laboratory Ambiguous Identification criteria obaerved. AMPHIBOLES F= Single Fiber (1-3 InleraecUona = 1-3 fibers) Amoaite 3= Bundle (>3 fiber* <1 fiber diameter apart) ___________ aamm filler Crocidolite Non-asbestos C= Cluiter (>3 Inlenectloni) J Stopping Suies: I------------ M= Matrix NSD= Mo Structure* Detected U\DATA\PR]VaTE\MiKSC\CA0D>TSM3 9/22/98 r >40 i/G.O. or In l«t 4 AnthophyUite Tremolite Actinolite Non-Identified

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SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000230536