NYC-WTC_000209771

NYC 9/11 Public Portal Document

ATC ASSOCIATES INC. TEM ANALYSIS LAB GROUP # 5670 - 10/12/01 Dab Sample No 60956 Filter Type MCE 2 5 mm. Operator Client Spl No L-6 Filter Area 385 mm2 Instrument I D EM 10 CRX Grid I D Disk No Screen Magnification 16.4Q0X (GO) Area 0 01124 mm"2 Comments ACC Volcage 80 kv No GO to be Analyzed _4 ( 3 147 Struct Corspd to 70 s/mrn^2 }

Structure Sb-uctun. Type, Length I.D. of Structure EDS GO. (Nonasb. No Coord. No. F B C M >0.5 um < 5 um > Sum Chrys. Amphibole Nonasb. Ambig./ND Elements)

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Photo No. (from I In 5 aa leitoa- Identify alt aUuetures using KM Check diffraction for aibasloa store all unrepaatod apectra contsining samples) IGrid acceptance;! structures up to 70s/ftn (Itl 4) <50X undissolved niter, overlapped or folded Struct, s > O.Sum fc > 5:1 Aspect RaUo <tOX particulate covarace >5QX covarafe Totals N* Not Obtervod (IDS opoctnim or dUTracUon pattara) at least 20 unfolded or overlapped grid squares /a Pooltivo diffraeUon pattom propartloo eoBformlng <SX holes or ooaoue areas F B C M » Sum Io laboratory IdaaUrioaUon crltorla oboarvod. 'UauMl ForUoa For chrwoUIo: O.TSbid oMoina for (OtO) rsflocUono. or niur Chrysotile O.Mnm ipocinf for the hyorllnt ropoat. otraaUof 'Avoided porUoa of (110) and (190) roflaeUono. or mur For anphibolat: 0.93am layer Una rapoat. and approi. (■arum of niUr (Smm Vido) 3.9 roUo of ooo'-twinnod Uyor lino opol opooinc to I nabjMt to oxanlaaUon Amphibole layor Um ropoot dtotanco (O.SSnm). v/> BOS apoetrum confonninf to laboratory idonUfieaUoB eritoria oboorvod. AMPHIBOLES Ambiguous F» Single Fiber (1-3 Intersectlom » t-3 fibers) Amoaite B« Bundle (>3 nbers <1 Hber diameter apart) ZSmm niUr Crocidolite Non-asbestos Si NSD. No Slnicturw DoUcUd ,|— rsu„>M«ui« ।—, >M ■/C °- or Io l.t * C.O. | Anthophyllite Tremolite Actinolite Non-Identifled L:\IMTA\PnV.n\IIWIC\CA0n91Ma 8/22/M

CITY_21MC100_002842238

NYC-WTC_000209775