NYC-WTC_000209888

NYC 9/11 Public Portal Document

ATC ASSOCIATES INC. TEM ANALYSIS LPx GROUP 5 Lab SamCiz Me !r T-zoe MCE T,m. Ooeracor r Scl, Me. 2 Fii-sr .Area 2 9= '^ni.r2 Insbrumenc ID. EM 10 DRZ Grxd I.D. Disk No :en Maarii£icac.;.Qn l€.400X IGC, Area mtn Comments Acc. Voicage 3 0 kV No. GC -Q be Anai-. ! 4 ■'31 SCL-jcc Ccrs3d " ■? S ' mi?' 2 ,

GO. structure structure Type Length I.D. of Structure N or I EDS 1 ■ (Nonasb. ■ No Coord. No. ^0.5 um Chrys.l Amphibole F B C M < 5 um Sum Nonasb. iAmbig./ND Elements)

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1 n 1, ni Photo No. (from I in S asbestos- Identify all structures using EDS Check diffraction for aabealos Store all unrepeated spectra containing samples) Grid acceptance: i atruclures up to 70a/t?im (HI 4) <50% undiasolveo filter, overlapped or folded StrucL = > 0.5um > 5:1 Aspect Ratio <10% particulate coverage >50% coverage N= Not Observed (EOS spectrum or diffraction pattern) at least 20 unfolded or overlapped grid squares Totals PoaitiVB diffraction pattern propertie* conforming <5% holes or opaque areas F B c M > Sum to laboratory identification criteria obaerved. For chryaotik: O.Tdnm ipacing for (0201 raflacbona, ■Unuiea poruon of niter Chrysotile r O.OOnm spacing tar the layer line repeat, streakiag 'Avoided porUan of (110) and (130) refleeUona. ur niter Por amphlbelea: O.bSnm layer line repeat, and approx. M ( Portion of filter i (2mm wide) 3.3 riUa of non-lwlnned layer line spot ipacini to H 1 axamtnation Amphibole layer Une repeat distance (0.53nm).

EDS ipectrum conforming to laboratory AX Identification criteria obaerved. ! AMPHIBOLES j Ambiguous P- Single Fiber (1-3 intersecUona = 1-3 fiber*) Amosite ; B= Bundle {>3 flbere <1 fiber dlaimeter apart} SSmni filter Crocidolite i Non-asbestosi C= Clueter (>3 iniareectiona) Us Uatnx Stopping i^ulea: , ' Anthophyllite J j. >30 s/C.O. or in lit 4 C.Q. j i Tremolite i ., , , .... , NS0= No Structure* Detected Actinolite Non-Identified i.\OATA\PRIVATE\MIKEC\C.KOD'TEMa 8/22/98

CITY_21MC100_002849273

NYC-WTC_000209915