Ambient air sampling report Book Two for 105 Duane Street,

NYC 9/11 Public Portal Document

ATC ASSOCIATES INC. - TEM ANALYSIS -__-- 7"Te Mrc __ ''peiator I L r~ Lab Sample No 6"'573 mm

Client Sp1. No. 14 F:_zer Area 385 mm':

_F.:; Grid I.D. v •\'- Disk No. Instrument I.D. EM 1

Screen Magnification _6,400X C Area U . 'O :. 1 nm"= Comments

30 kV No. GO to to Analyzed o 1 4.'_: Struct Ctrscd. :c s mm"_ Acc. Voltage

GO. StructureIstrueture Type Length I.D. of Structure N cry' EDS (Nonasb. No Coord. No. F B CM >0.5 um >. 5um ,Chrys. Amphibole Nonasb. IAmbig./NDI Elements 5 um

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I I i I `Photo No. (from 1 in 5 asbestos- I Identify all structures using EDS Check diffraction for asbestos Store all unrepeated speetraJ containing samples) Grid acceptance:I structures up to 70a i~tim (let 4) Struct. _ 0.5um & > 5:1 Aspect Ratio <50% undinnolvod filter, overlapped or folded I <10% particulate coverage >50% coverage Totals N- Not Observed (EDS spectrum or diffraction pattern) lot beat 20 unfolded or overlapped grid squares Positive diffraction pattern propertfea conforming <5% holes or opaque areas F B C M > 5um to laboratory identification criteria abserved. Unused portion Per ehrysaills: 0.73nm pamns far (020) reflections. of filter Chrysotile 0A.7am .paving for then layer line repeat, streaking Avoided portion of (Ito) and (190) reflection. of filter For amphiboles: 0.09nm layer tine repeat. and of (2mm Wide) 9.S ratio of non-twinned layer line spot spacing to Amphibole layer line repeat distance (0.53nm). EDS spectrum conforming to laboratory Ambiguous identification criteria observed. AMPHIBOLES F= Single Fiber (1-3 Intersections = 1-3 fibers)apprea.co Amosite S= Bundle (>9 fibers <I fiber diameter apart) (>0 mtersecuans) 25mm f11Ler Crocidolite Non —asbestos; II Matrix Stopping game.; Anthophyllite NSD= No Structures Detected aSS s/c.0. or in teL 4 0.0. T re m elite Actinolite von -Identified L•\DATA\PRIVATE\IIIKEO\CAOO\TEN2 9/22/98

NYC-WTC 000104392