NYC-WTC_000209888

NYC 9/11 Public Portal Document

ATC ASSOCIATES INC. TEM ANALYSIS LAE GROUP 5"S? Lab Sample No. 62512 FiLtier Type MCE 2£ mm Coeraccr Client Sol. No. C F i. - Cc }8 £ mm 2

Instrument: I.D. EM 13 CRX Grid :.D vg 4^ Disk, No. Screen Magnificacion 1c,4 GQX (GO) Arsa C 01124 mm Comments ACC. Voicage 8 0 kV NO. GO CO be .Analyzee _6 721 Scruc- Icrscd Tim

GO. Structure structure Type f Length I I.D. of Structure N or EDS ------------------- :--------------------------------- i (Nonasb. No Coord. No. j »0.5 urn Sum Chrys.! Amphibole I Nonasb. iAmbig./NDi Elements) F B C M <5 um i

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1 1 Photo No. (from 1 tn 5 asbestos- Identify all structures uaing EDS Check diffraction for asbestos store alt unrepeated spectra containing samples) [Grid acceptance;! __ structures up to TOs/t^im (I a t 4) <50X undiaaotved filter, overlapped or folded Struct. = > O.Sum k > 5:1 Aspect Ratio <10% particulate coverage >S0X coverage Totals N= Not Observed (EDS spectrum or difFrsetion pattern) at least 20 unfolded or overlapped grid squares <5% holes or opaque areas F B C M > Sum Positive diffraction pattern properties coafarminf to laboratory Identification criteria observed. For ehrysoUle: 0.73nm spannc for (020) reneettona. O.AOnra ipaclnc for ths layer Une repeat, streaklnc InusMi portion or niter 'Avoided portion Chrysotile r of (110) and (laO) renscUona. or niter Fer ampbibeles: O.S3nm layer Une repeat, and approx. Portion of filter {2mm wide) 3.3 ratio of non-twinaed layer Une spot spaeinc to subject to examination / Amphibole layer Uns repeat distance (O.S3nm).

EDS spectrum conforming to laboratory identification criteria observed. ! AMPHIBOLES I Ambiguous Amosite I Fa Single Fiber (1-3 intersections = 1-3 fibers) a= Bundle (>3 fibers <1 fiber diameter apart) ______________ ZStnm Miter Crocidolite Non-asbestos! Si «”nx'' ; SU.pp.n, !lu.» , ! AnLhoptiyllite ( NSDs No Structures Detected i i TremoJiLe ! ,, , Actinolite i Non-Identified UX 0ATA\ PH!VATE\ H1KEC\ CAOOXTEMn 8/22/88

CITY_21MC100_002849249

NYC-WTC_000209891