Ambient air sampling report for 105 Duane Street, Feb 2002

NYC 9/11 Public Portal Document

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TEM ANALYSIS ATC ASSOCIATES INC. - LAB GROUP # 5761 - 10/25/ 01 Operator Filter Type MCE 25 mm Lab Sample Nc. 62209 Filter Area 385 mm"2~ Disk No. Client Spl. No. 66 Grid I.D. Comments Instrument I.D. EM_1 C0 R.X (GO) Area 0.0114 Ccrsod. to 10 s mm 16 400X 4.721 Struct. Screen Magnification No. GO to be Ana:yzed 6 Voltage 80 kV EDS Acc. I.D. of Structure Nor ✓ (Nonasb. structure Type Length Structure Amphibole Nonasb. Ambig./ND Elements G GD. No Coord. Tf No rLLE F B C M um Chr s.

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spectra asbestos Store all unrepeate BDS Check at[lraaUon for (lot 4) asbestos- Identify all structures uain structures u to 709 &M Photo No. from 1 in containing samples ) 5 Grid acce ptance: r overlapped or o a <50% undlnolve coverage >50% cove t o tea O.5um & > 51 Aspect Ratio <lo% particulate grid squares Struct. _ spectrum or diffraction pattern) at least 20 or unfolded opaque or overlapped areas Not Observed (209 <5% holes N= conforming portion pattern properties Unuoed peruse Chrysotile o■abo dirrracU.n criteria observed. tutor laboratory identification nM°Uen■. For em spa lr. 0.77nm \Pw■ .r a for (1120) ■tre°atag Avoided portion 0.55110 spacing for the py.r in. mp.al. of filter neotion.. PorUoe or filter (2mm vide) Amphibole of (110) and (170) rs layer lint repeat. and approi. .ualeat to to o.57om Far \mPblbol\a: twinned layer line spot spacing to ai\mle■Uon 7.5 roil. of sore- d1■taae. (0.57am)• Ambiguous layer lie, repeat tron riteria O tov laboratory [ _pMpH taot \ BDS ■ observed. AIIIOsite tdsnti ication arltarla Non— asbestos lntereacti.ns = 1-3 niters) z5mm rater Crocidolite P= Single Fiber (1-3 fiber diameter apart) Mite Ba Bundle (>3 fibers <1 pn AIU h P y in Rulaa: C= cluster >3 interoectt.ns) 3topp g 1 let 4 c.0. Tremolite .vr,n_identified NYC-WTC 000104219