NYC-WTC_000202627

NYC 9/11 Public Portal Document

ATC ASSOCIATES. INC. TEM ANALYSIS LAB GROUP 4: 5o5J - 10/39/01 Lab Sample No. Filter Type .MCE 2 5 nm Oparacor Client Spi. No. M3HS-S>5-i:/3-13 Filter .Area 335 mm"! xnscrument EM 10 CRX Grid I.O, if Disk Nc Screen Magnification 15. 40QX I GO) Ar*a 0 .01124 —n"; Comment: 3 Acc. Voltage 8' kV No. GO 30 be Ai^al/zed 4 i 3.147 SliucC. Corspd, ro 70 s/mm^2

co. Structure structure Type Length I.D. of Structure EDS N or/ (Nonasb. No. Coord. No. >0.5 um F 0 C M > Sum Chrys. Amphibole Nonasb. Ambig./ND Elements)

3 8

Photo No. (from 1 in S aa bee toe- Identify all atnictures using BPS Check diffraction for ubeatoa Lore all unrepeated spectra containing samples) Grid accantancad structures up U TOs/mg det 4) <S0X undiasolved filler, overlapped or folded struct. = > O.Sum A > 9:1 Aspect Ratio <10X particulate coversg® >S0X coverage Totals. N= Not Observed (8DS spectrum or dlflrscUon pattera) at least 20 unfolded or overlapped grid squares 4/^ Positive dtrfracUon psUam properties conforming F B C M > Sum Lo Ishorstory idenUneaUan criteria observed. Unut«l parUon For shnrssUlsi Q.TDnm ipseina for (020) MReeUsns. af niter Chrysotile a.S3nm apeeiag for the layer line repeat. itr«akin< .Ivolded portion of (110) and (190) renecUona. of niter Por amphiboles; XOann layer line repaeU and approx. PerUm of niter (Smm wide) 3.9 ratio of non-lelnned layer Une ipot apaeing to { lUfijecL to Amphibole layer Une repeat dlaLsnee (O.S9nm). v/s EDS ipectrum conforming to laboratory Ambiguous IdenUficaUon criteria observed. AMPHIBOLES P= Single Fiber (1-3 Interseetiona = 1-3 fibers) Amosite Ba Bundle (>3 fiban <1 fiber diameter apart) !!mm niter Crocidolite Non-asbestoa Cs Cluster (>3 tnleraecUazu) I 3toppiPt Wulesi I— ■ — ■ Matrix Anthophyllite MSOs No SLructurss Detected >ao */C.O. or la 1st 4 G.O. Tremolite Actinolite Non—Identified UXDATAXPlUVArEXMnCTCXCADDVeUS »/82/»a

CITY_21MC100_003274231

NYC-WTC_000202637