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TEM Asbestos air sample results, NYC BOE, Dec 2001

Machine-extracted title · confidence 95%

Laboratory report documenting transmission electron microscopy analysis of an air sample collected from NYC Board of Education facilities in December 2001.

NYC-WTC_000184326
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Scanned page image, NYC-WTC_000184326
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OCR status: ok · source: pdftotext

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: NYC BOE Volume (liters): 1952 Lab Group #: 6165 Filter Tvpe / Filter Area: MCE 385 mm- Lab Sample #: 8 Grid Opening Size: 0.01124

Client Sample #: 8 Area Examined: 0.04496

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 12/21/01

Analysis Performed By: ROMAN PEYSAKHOV

GC. ; Structure Structure Type Length ID of Structure N or V EDS No (Nonadb F 3 C M >=5p Chrys Amphibolej Nonasb AmoigIND No Coord <5p Elements)

V // /

Struct = > 0.5^1 > 5:1 Aspect Ratio Grid acceptance: Positive diffraction pattern properties conforming to <50% undissolved filter, overapoea or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid souares <5% FTb C M >5o v= EDS spectrum conforming to ladoratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle j<3 fibers <1 liber diameter apart Crocidolite Ambiguous C = Custer (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix NSD = No Structures Detected Actinolite Non-Identified 1 CITY_21MC1OO_OO31O4961

NYC-WTC_000184326

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NYC-WTC_000184326Source: NYC Law Department, mirrored locally

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