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TEM Asbestos air sample results, NYC BOE, Nov 2001

Machine-extracted title · confidence 50%

Laboratory data sheet recording transmission electron microscopy analysis of an air sample collected from a Board of Education site on November 15, 2001.

NYC-WTC_000185346
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Scanned page image, NYC-WTC_000185346
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OCR status: ok · source: pdftotext

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: N^'C BOE Volume Hirers): 1928 Lab Group #: 5891 Filter Tvpe / Filter Area: MCE 385 mm- Lab Sample #: 8 Grid Opening Size: 0.01124

Client Sample #: 8 Area Examined: 0.04496 mm- Magnification: GRID BOX: £1^ 20,000 GRIDED: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 11/15/01

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or v EDS (Nonadb No F 5 C M >=05 U >=51J Chrys Amphibole Nonasb j Ambig/ND No Coord <5u Elements)

2j__ 1 2j C

Struct = > 0.5(1 .> 5:1 Aspect Ratio Grid acceptance: Totals laboratory identification criteria observed least 20 unfolded or overlapped grid squares <5% B C M . >5u 4= EDS spectrum conforming to laboratory holes or opaque areas P identification criteria ooserved Chrysotile j AMPHIBOLES i Amphibole [ F = Single Fiber Amosite : 3 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite | Non-Asbestos Tremolite M = Matrix Non-Identified NSD = No Structures Detected Actinolite ) L.,

CITY_21MC100_003106422

NYC-WTC_000185346

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NYC-WTC_000185346Source: NYC Law Department, mirrored locally

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