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← Document results/DEP Box 36/105 DUANE ST 1001650, 151/1
Document / 294 pages

Ambient air sampling report for 105 Duane Street, Feb 2002

Machine-extracted title · confidence 98%

Summary of ambient air sampling and visual observations at 105 Duane Street following the WTC collapse.

NYC-WTC_000104027–000104320

Folder label: “105 DUANE ST 1001650, 151/1

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Scanned page image, NYC-WTC_000104132
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OCR status: ok · source: pdftotext

NYC 9/11 Public Portal Document

I .. ...... TEM ANALYSIS ATC ASSOCIATES INC. - LAS GROUP q 5762 - 10/25/0' Operator ~- Filter Type MCE 25 mm Lab Sample No. 62255 Area 385 m 2 / lj Filter Ali Disk No. Client Spl. No. 41 Grid Z.D. Comments Instrument Z.D. EM C (GO Area 0 01124 mm"2 Corsod to 70 s/mm"2 400X 4 721 Struct Screen Magnification 16 zed 6 No. GO to be Analy BO kV EDS Acc. Voltage (Nonasb. Length I.D. of Structure N or structure 'type Structure Nonasb. Ambig. ND Elements GO. 30 5 um > Sum Chr s. Amphibole No Coord. No. F B C M < 5 um

1- Z 11 a I ll t I Il/b! I I

I I II] Ii j (let 4) Identify all atructurea ue1R sir is 5 aabestes- Grid acceptance: To_= Photo No. from 1samples) er o' containing <50% undisaoive Covera9c --- <10% particulate overlapped g rid equates = O.Su m & > 5:1 Aspect Ratio uon pattern) at least 20 unfoldedopaque or areas wm or dutne <5% holes or N. Not Observed (SOS spat portion pattern propsrUce contarte n[ unafed Chrysotile Positive dlttractlon StrueLPositive identification criteria observed. or ttlter to laboratory ppe reflection. Avoided portion p. nu Far abrysoulr. 0.730'tba l.I~r us repeat• .areakW4 or filter Amphibole o.etnm spacing rencellona. Portion or niter (2mm side) of (110) and (130) line reps' wd apprae• tion of b empbltrelce: e.n7nm layer ties .pot ~ r lies Pacing to asaRiesUon For non-teinnad tart 7A nua of distance Ambiguous layer tine npoat AMPHIBOLES conforming to labonton SOS s Wm observed• _ AfnOslte identification criteria Non —asbestos 1-3 tlbara) xemm niter Crocidolite (1-3 Later" dine p= single Fiber _<1 nber diameter apart) Atlthophyllite 9= Bundle (>s tlbara 9teaoma Ruler. , __

NYC-WTC 000104132

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NYC-WTC_000104132Source: NYC Law Department, mirrored locally

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