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TEM Asbestos air sample results, NYC BOE, Mar 2002
Machine-extracted title · confidence 95%Laboratory report documenting transmission electron microscopy analysis of an air sample collected from a New York City Board of Education site.
NYC-WTC_000181281Page image
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NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (litersI: 2000 Lab Group #: 6896 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 6 Grid Opening Size: 0.01124
Client Sample #: 06 Area Examined: 0.04496 mi-n'
GRID BOX: Magnification: 20.000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/2/02
Analysis Performed By: ROMAN PEYSAKHOV
GO Structure Structure Type Length ID of Structure N or v EOS No (Nonadb i F B C M Acs’/ '=5pj Chrys Amphibole Nonasb Ambig/ND No Coord <5m Elements) ■
tZ- P Z ____
^4
Struct = >0.5p >5:1 Aspect Ratio Grid acceptance:
Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C I M >5u ' 9= 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 Non-Identified j Actinolite NSO = No Structures Detected
CONFIDENTIAL, CITY_21MC100_003468262 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000181281
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NYC-WTC_000181281Source: NYC Law Department, mirrored locally
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