Ambient air sampling report Book Two for 105 Duane Street,

NYC 9/11 Public Portal Document

I ATC ASSOCIATES INC. - TEM ANALYSIS LA.P. GROUP i) 5''0 - I Lab Sample No. 6255- Filter The (Jo: =`_ rm. Cperatcr

Client Spl. No. H-3 Filter Area 33° mm

I Instrument C.C. EM 1') '_R:{ Grid 1.0. `' CiaK No.

Screen Magnification 14.400X (GO, Area ' '. _:.24 mm. Comments

Acc Voltage 80 kV No. GO to be Anaiyced 5 4.-Z! Struct. Corsod. t- simm'~

EDS GO. Structure Structure Type Length I I.D. of Structure N or,/ (Nonasb. I No Coord. No. >0.5 um F B C M 5 um > 5um Chrys.i Amphibole Nonasb. ',Ambig./ND Elernents)

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• Photo No. (from 1 in 5 asbestos- Identify all structures Using EDS Check diffraction for asbestos Store all unrepeated spectra - containing samples) l acceptone7l structures up to 70a ciim (let 4) <50% undiasoive i er, overappe or a e Struct = > 0.5um k > 5:1 Aspect Ratio Totals <10% particulate coverage >5O% coverage No Not Observed (EDS spectrum or diffraction pattern) la east 20 unfolded or overlapped grid squares <5% holes or opaque areas Positive diffraction pattern properties conforming to laboratory identification criteria observed. Unused portion For ohr3=U1,s: 0,' rrsein` for (020) reflections, of filter Chrysotile 0.55nm spacing for the aver line repeal, streaking Avoided portion of (110) and (130) reflections. of filter For amphiboles: 0.SDnm layer line spent, and of altar (2mm wide) 9.3 ratio 0 non-ginned layer line spot spacing to p Amphibole layer line repast distance (0.53nm)• iaatian

1 EDS spectrum conforming to laboratory identification criteria observed. F= Single Fiber (1-3 intersections = 1-3 ((bare) 8= Bundle (>3 fibers <1 fiber diameter apart) C r (>3 intersections) approx.Etectte

25mm filter AMPHIBOLES Amosite Croctdo(ite Ambiguous

Non —asbestos gtopping aulaa: Anthophyllite

1 H= lust atrx NSD- No Structures Detected j >50 a/c.o, or in lot 4 G.O. Tremolite AC LInOhte son —Identified L•\DATA\PRIVATE\MIKEG\CA00'3£Y3 9/22/98

NYC-WTC 000104337