NYC-WTC_000209888

NYC 9/11 Public Portal Document

ATC ASSOCIATES INC. TEM ANALYSIS -■ GRCUP

Lao Sample No ELlGer T'/oe MCE Operacor

Client Spi- Nc. Q6 r .Area 3 3 5 nin : nscrumenc E 2 EM LC ORX LC ■ .0 Disk Nc.

reer Magni iicacion 1.3,4 JQX iGOi Area Comments

Acs. Voltage 3 0 kv Nc. GO co be Anal/; i 4 . 721 Struc CorsDG. 70 70 3 •'mm

GO. Structure Structure Type Length I.D. of Structure N EDS : (Nonasb. No Coord. No. F B C M <°5 um ! 'Chrys.i Amphibole Nonasb. Ambig./NDl Elements) 41? a 2^ 7 I A I i J 47^ i ! I

I I

I Photo No. (from I in 5 asbestos- Identify all atructurea uBtng EDS Check diffraction for asbestos atructurea up to 7Qa/i?irr Store all unrepeated spectra -J containing samples) Gric acceptance:! (lit 4) <50X undisaolvea filter, overlapped or folded Struct. = > 0.3um <Sc > 5:1 Aspect Ratio <IOX particulate coverage >50X coverage N= Not Observed (EDS spectrum or dlffrscUon pattern) at least 20 unfolded or overlapped grid squares Totals Positive diffraction pattern properties conforming <SX holes or ooaque areas F B C M > Sum to laboratory identification criteria observed. •Unused portion of niter For ehryaotiis: 0.73nm sBacing for (020) ranoetions. O.Sanm spacing for the layer Une repeat, strcakini Chrysotile ‘Avoided portion of (110) and (130] reflections. of filler For amphiboles: O.dSnm layer Une {2mm wide) 3.5 ratio of nen-tvinned layer Une Amphibole layer line repeat diatanca (O.SSnm).

/= EDS spectrum conforming to laboratory identification criteria observed. AMPHIBOLES Ambiguous F= Single Fiber (1-2 intersections = 1-3 fibers) Amosite B= Bundle (>3 fibers <1 fiber diameter apart) G= Cluster (>3 intersections) 25mm fltlar Crocidolite .Non-asbestos i M= Matrix SLopptnc Ruiee: ! -Anthophyllite j 1 HSOs No Structures Detected >50 «/C.O. or in Isl 4 G.O. ' Non-Identified ! U\ DATA\ PRIVATE\ MIKEC\CADOVE M2 9/22/93

CITY_21MC100_002849248

NYC-WTC_000209890