NYC-WTC_000202627

NYC 9/11 Public Portal Document

ATC ASSOCIATES, INC. TEM ANALYSIS LAP GROUP tf- SnSG Lat Sample Mo. 60713 rile.er Type MCE 25 ir.m Client Spi. No. MSHS-3>6-10. Etlr.er Area 388

Instrument Z.D. EM 10 CRY. Grid I.D. Disk Me. Screen Magnification IS 400X iGO) 01124 Cemments Acc. Voltage 8 0 kV Mo - GO to oe Anaiyoed lorsod. co 70 3/mm''2.!

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

a

Photo No. (from 1 in 5 asbeatoa- Identify all atructurea usina EDS Check diffraoUan for asbeetoa Store all unrepeated spectra containing sample!) Grid accentencaJ atructurea up to 70a/mn (let 4) <50X uadlssolved filler, overlapped or folded Struct. 3 > O.Sum 4 > S:l Aspect Ratio <IOX parUcuiate coverage >S0X coverage Ns Nat Ohaerved (EDS apectrum or diffraction pattern) at least 20 unfolded or overlapped grid tquarsa Totals ys PoaiUve diffraction pattern properUea conforming <5X hoiet or opaque areaa F B C M > Sum tn laboratory IdenUncation criteria obaerved. ■UtuaaMl portion For Chrysouie; 0.73nm apactng for (020) ranacUonv er niter Chrysotile a.asnn apaeing for Um layer nine repeat. itrMKiag of (110) and (ISO) mnaetioiw. 'Aralded portlen of niter For amphlbotn: O.aaoni tayor Iino rapoat, and approx. (XiBin »ldi| a.a ratio of non-twinnod layer line spot ipacins to Amphibole layer lino rapoat diatenee (O.SOnm). ys EDS gpoctrum conforming to laboratory Ambiguous IdenUflcatlon criteria obaerved. AMPHIBOLES Fs Single Fiber (1-3 InteraecUi = 1-3 rib.™) Amoatte Bn Bundle (>3 fibera <1 fiber d C= Cluster (>3 intanecUonai ater apert) e&mm niter Crocidolite Non-asbestos iStepping Nulaas L——, Anthophyllite Ms Matrix I >da 8/0.0. «r in 1ft 4 c.o. I NSO- No Structure! Detected Tremolite Non-Identified L\DATA\PRIVATE\MIKEG\CAOO>TEM3 9/22/98 Actinolite

CITY_21MC100_003274239

NYC-WTC_000202645