NYC-WTC_000188721

NYC 9/11 Public Portal Document

ATC ASSOCIATES INC. TEM ANALYSIS LAB GROUP 5609 - 10/05/01 Lab Sample No. 60029 Filter Type MCE 25 mm Operator Client Spl. No. 5HS-1>1Q-10/5-22 Filter Area 3.5 5 mm'^2 I ns t r-ament I.D. EM 10 CRX Grid I.D. Disk No. Screen Magnification io,40QX (GO) Area 0 . 01124 mm?2 Comments Acc. Voltage 8 0 kV No. GO to be Analyzed 4 ( 3.14'7 Struct. Corspd. .to 70 s/nm'^2.)

GO. Structure Structure Type Length I.D. of Structure EDS >0.5 um (Nonasb. No. Goord. No. F B C M > Sum Chrya. Amphibole Nonasb. Ambig./ND Elements) < 5 um I 2 H It 0

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Photo No. (from 1 in S asbestos- Identify all structures using SDS Check diffraction for asbestos store all unrepeaLed spectra containing samples) Grl7^cceptancg:l structures up to 7Qb/i'Am <S0X undissolvea fiiter. overlapped or /oided Struct. 3 > 0.5um & > 5; I Aspect Ratio <10X particulate coverage >50% coverage Totals Ns Not Observed (EOS spectrum or diffraction pattern) at least 20 unfolded or overlapped grid squares Positive diffraction pattern properties conforming <5X holes or opaque areaa F B C M > Sum Lo laboratory identification criteria obaerved. >UnuMd portion For chrysotile: Q.TSnm ipscing for (029) reflections, ar riitsr Chrysotile O.SSnm spacing far the layer line repeat, streaking Avoideti porUon of (110) and (130) reflections. of nitar For amphiboles: 0.93nm layer line repeat, and approx. PorUon of filter (Zmm wide) 3.S ratio of non-twinned layer line spot spacing to aubject Ln examination Amphibole layer line repeat distance (O.SSnm). EDS spectrum conforming to laboratory Ambiguous Identification criteria observed. AMPHIBOLES F3 Single Fiber (1-3 intersections = 1-3 fibers) Amosite 25mm filler 03 Bundle (>3 fibers <1 fiber diameter apart) _________________ C= Clu>Ur(>3 Intersectiani) 1 Crocidolite Non—asbestos Mss Matrix r ..... Slopping Kuies. Anthophyllite NSD= No Structure- Detected | >50 i/C-O- ar in 1st * C.O. Tremolite Actinolite Non-Identified L;\DATA\PRIVATE\MIKgC\CADDVSiO 9/22/98

CITY_21MC100_003082826

NYC-WTC_000188721