NYC Law Department release
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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_000104117
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OCR status: ocr · source: ours

NYC 9/11 Public Portal Document ATC ASSOCIATES INC. — TEM ANALYSIS RP (ods No. (from 1 in 5 asbestos— containing samples) Identify ell structures_usin EDS Struct. = > O.5um & > 5:1 Aspect Ratio No Not Observed (EDS spectrum or diffraction pattern) Grid acceptance: m (Ist 4) <50% undissolve r. <10% particulate coverage >S50% coverage at least 20 unfolded or overlapped grid squares p e gu Totals FB C M > Sum <5%_hole: | LAB GROUP _#: 5762 - 10/25/92 | Lab Sample No. 62240 Filter Type MCE 25 mm Operator, Client Spl. No. 26 Filter Area ips F PC Instrument I.D. EM 10 CRX Grid I.D. j $ Disk No. Screen Magnification 16,400X (GO) Area 9.01224 mm*2 Comments Acc. Voltage go kV No. GO to be Analyzed _6 ( 4,722 Struct. Corspd. £0 70 s/mm*2. GO. Structure [Sucre Tre Length I.D. of Structure N or/ (Nonasb 0.5 um ; ; : GF Coord. No. F| Bic |M Ar um 2 5um |Chrys.| Amphibole Nonasb. |Ambig./ND| Elements /|t2l Vo | s/V2Zl u a ‘abe t Te Blu Check diffraction for apbester Store all unrepeated won Via Positive diffraction pattern properties conforming to laboratory identification criteria observed. Unused portica For chrysotile: 0.73: if fer (020) reflections, of filter i O.o3nm spacing tor the. yer 2 Shee streaking Avoided portion Chrysotile of (116) and (130) reflections. of filter F mophiboies: 0.$dnm layer line repeat, and approx. Portion of [liter 2 wid . For amphiboles: 0.S3nm {ayer line epee spacing subject to (2mm wide) Amphibole layer line repeat distance (0.83nm). axamination Vv EDS spectrum conforming to laboratory * jdentification criteria observed. AMPHIBOLES Ambiguous F= Single Fiber (1-3 intersections = 1-3 fibers) Amosite B= Bundle (>3 fibers <1 fiber apart) 25mm filter Crocidolite Non-—asbestos . _ a remolite | Non-Identified Niobe NYC-WTC_000104117

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NYC-WTC_000104117Source: NYC Law Department, mirrored locally

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