NYC-WTC_000209888

NYC 9/11 Public Portal Document

ATC ASSOCIATES INC. TEM ANALYSIS i ■

Lao SamoDc Nc 62 Sii-er 7 yr'T mm Oceracor lenc. Nc. 25 Izer .^rea 33 5 mm'

Instrument I.D. EM 10 DRk Grid Disk Mo. Screen Maanxfxcatxon 15,400X go; .\rsa mm Comment3 Acc. Voltage 3 0 kV No. GO to be Ana 721 S“r-c Zorscd s ■ mn

GO.structure structure Type Length I.D. of Structure EDS i 510.5 um (Nonasb. No Coord. No. F B C M Sum Chrys. Amphibole Nonasb. (Ambig./ND Elements) < 5 um

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I Photo No. (from I In □ asbestos- Identify all structures using EDS Check diffraction for asbestos Store all unrepeated spectra containing samples) Grid acceptance:!, structures up to TOs/ifim (1st 4) <S0X andisaoivea filter, overlapped or folded Struct = > 0.5um de > 5:1 Aspect Ratio <10% particulate coverage >3OX coverage at least 20 unfolded or overlapped grid squares Totals H= Not Observed (EOS spectrum or diffraction pattern) <5X holes or ooaaue areas -------- F B C M > Sum Positive diffraction pa Item properties conforming Lo laboratory identification criteria observed. InuseO oorUon For chryaeUla: 0.73nm apaeinc for (QZO) rsflectiona. of filter Chrysotile I 3.33nfn spacing for ths layer Une repeat, alrealcinc 'Avoided portion sf (110) and (130) refleeUons. of filler For amphibolaa: O.Mnm layer line repeat, and apprex. PorUon of filter (Zmm wide) 3.3 ratio of non-twinned layer line spot spacing to aubject to examinaUon Amphibole layer line repeat distance (O.Sanm).

/= CDS ipectrum conforminc to laboratory identification criteria observed. ' .4.V(PHiaOL£S Ambiguous ‘ F= Single Fiber (1-3 intenccUona = 1-3 fibers) Amosite j 0= Bundle (>3 fibers <1 fiber diameter apart) Zamm flltar Cracidoiiie । Non-asbestosI C= Cluster l >3 intersecUona) M= Matrix ——_ Slopping Huies: -------- .\nthophyllite ! p NSD= Ho Structures Detected , >30 i/G.D. or in Isl 4 Q.Q. Tremolite ! , , , .... j .AcUnolite -Non-Identified I L\OATA\PHIVATE\MIKBC\CADD\rEM3 3/22/90

CITY_21MC100_002849267

NYC-WTC_000209909