NYC-WTC_000188638

NYC 9/11 Public Portal Document

ATC ASSOCIATES INC. TEM ANALYSIS DAE GROUP 566g. - IQ/ll/Ol

LeiG Sample No. 6052 6 Filter Type MCE 25 mm Operacor

Client Spl. No. KSHS-EIR-10 - 11 - OS Filter Area. mm

Instrument I.D. EM 10 CRX Grid I.D. Disk No.

Screen Magnificacion 16.400X (GO* -Area 0 . 0112 4 mm. Comments

Aco. Voltage 8C kV Ng. GC to be Anal/zed 3.147 Struct. Corspd. do 70 s/mm'D.^

structure Structure Type Length I.D. of Structure EDS GO. (Nonasb. No, Coord. No. >0.5 um F B C M < 5 um > 5un» Chrys. Amphibole Nonasb. Ambig./ND Elements) f v 5 6 (/

Store all unrepeated spectra--^ Photo No. (from 1 in 5 aabestos- Identify all structures using EDS Check diffraction for aabestos containing samples) Grid acceptance:! structures up to TOa/i^m {l»t 4) <S0X undisaolveo filter, overlapped or folded Struct. = > O.Sum & > S:1 Aspect Ratio <10X particulate coverage >50X coverage Totals Not Observed (EDS spectrum or diffraction pattern) at least 20 unfolded or overlapped grid squares <SX holes or opaque areas F B C M > Sum Positive diffraction pattern properties conforming to laboratory identification criteria observed. •Unused portion For chryaoUla: 0.7anin apacinx for (OZO) reriectiena, of niur Chrysotile 0.53nm apaelng for the layer line rapaaU atraaicing -Avoided portion af (110) and (130) ranactiona. of niUr Por amphiboles: 0.9anm layer line repeat, and approx. I PorUon of niter) (2mm wide) a.a ratio of non-tvinned layer Une apot apacing to •ubJeoL Lo I examination I Amphibole layer line repeat diaUnce (0.53nm). '/A EDS spectrum conforming lo laboratory identification criteria observed. AMPHIBOLES Ambiguous pa Single Fiber (1-3 LnteraecUona = 1-3 fibers) Amosite B= Bundle (>3 fibers <1 fiber diameter apart) _________________ 29mm filter Crocidolite Non—asbestos £1 SSS? NSD= No Slructuro. Oelootod I|— >»» »/C-°- " Rui.., <I— C-g- Anthophyllite Tremolite Actinolite Non-Identified L:\DATA\PR1VATE\MIKEC\CADDVEK3 8/22/80

CITY_21MC100_003082131

NYC-WTC_000188638