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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_000104216
OCR text

OCR status: ok · source: pdftotext

NYC 9/11 Public Portal Document

TEM ANALYSIS ATC ASSOCIATES INC. - LAB GROUP # 5761 - 10/25/01 Operator !/ Filter Type MCE 25 mm 62206 Lab Sample No. mm2 Filter Area 36 Client Spl. No. 33 Disk No. Grid I.D. Instrument I.D. EM 10 CRX Comments (GO) Area 0.01124 mm"2 to 70 s/mm"2 Screen Magnification 16 40OX 4.721 Struct. Cots d. No. GO to be Analyzed 6 Acc. Voltage 80 kV EDS N or ✓ ~Le~ngth I.D. of Structure (Nonasb. GD. Structure S4iowr° type Ambig./ND Elements No. Chr s. Am hibole Nonasb. No Coord. F B C M

—1i

spectraJ (lot 4)

containing sampled) -"" undissolve r. overlapped or rolaaa TT t- J Struct = > 0.5um & > 5:1 N= Not Observed (BDB

V' Aspect Ratio <10% particulate coverage least 2s unfolded or spectrum or diffraction pattern) <5% holes or fopaque area

Positive diffraction pattern to laboratory properties identification criteria observed. conforming >507L cove overlapped

unused portion of filter d`agwree

Chry90tile ehrysoule: c.73nm .pee for (0211) mnmuons. Avoided portion For layer ltas re peat. 0.53nm epaMes for the suwkina or filter of (110) and (130) reneeuo°e. Portion of niter (P.mm .ids) Amphibole tins reptt, wd apprsa. subject to For amphibolar. 0.3em layer apse)-g to seamisaUca s.5 ratio of non-l~lnned layer line spot layer ►ins npsat distance (O.am). Ambiguous v in laboratory AMPHIBOLES /= CDs sppecaatrum observed. idenutfaauon criteriaa Amosite F- Single Fiber (1-3 Intersections = 1-3 fitter') 25mm niter Crocidolite Non asbestos <i fiber diameter apart) B= Bundle (>7 fibers slapping Rules: AnthoP h yllite C= Cluster(>3 Intersections) - taatria ,.0 ./C.O. er in lot 4 0.0. Tremolite N on —Ide ntified

NYC-WTC 000104216

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NYC-WTC_000104216Source: NYC Law Department, mirrored locally

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