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TEM asbestos air sample results, NYC BOE, Feb 2002

Machine-extracted title · confidence 50%

Laboratory report documenting transmission electron microscopy analysis of an air sample collected from a New York City Board of Education facility.

NYC-WTC_000181226
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NYC 9/11 Public Portal Document

T£M Asbestos i air / Couat Sheet I Client Name: NYC BOE Volame Citers): : 920 j Lab Group #: o929 Fihej- Type ' Filter Area: Lab Sample #: Grid Opening Size: O.01124

Ciient Sample #: 15 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20.000 GRID ID: 2 Accelerating Voltage: ! 00 KeV # Grid Openings: 4 ■Analysis Date: 2,-2y02

/ Analysis Performed By: ROMAN PEYSAKHOV

GO Structure Structure Type Length ID of Structure N or '• EDS (Nonadb No F B C M >=05 p )>=5)J Chrys Amphibole Nonasb Ambig/ND / I'iZ Coord I <5p Elements)

TrrT

I , '7 :J4

4- I

Struct = > 0.5p >5:1 Aspect Ratio Grid acceptance: Totals laboratory identification criteria observed least 20 unfolded or overlapped grid squares <5% F M I >5u 'A EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite Non-Identified Mcn s Mn siriintnres Detected

CONFIDENTIAL, CITY_21MC100_003468171 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000181226

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NYC-WTC_000181226Source: NYC Law Department, mirrored locally

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TEM grid data sheet, sample 7, Jan 2002 · Box unavailable

NYC-WTC_000175809

Technical data sheet recording transmission electron microscopy parameters and observations for the seventh asbestos air sample analyzed on January 22, 2002.

7 shared non-person entities · 1 shared topics · similarity 0.977

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TEM grid data sheet, sample 7, Jan 2002 · page 1

NYC-WTC_000175809

Technical data sheet recording transmission electron microscopy parameters and observations for the seventh asbestos air sample analyzed on January 22, 2002.

Similarity score 0.989 (not a probability)

machine-extracted · confidence unavailable · Check page ↗

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TEM grid data sheet, sample 7, Jan 2002

NYC-WTC_000175809

Technical data sheet recording transmission electron microscopy parameters and observations for the seventh asbestos air sample analyzed on January 22, 2002.

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