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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 facility.
NYC-WTC_000176701Page image
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NYC 9/11 Public Portal Document
4*
TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume niters); 1880 Lab Group #: 7278 Filter Type / Filter Area: MCE 385 Lab Sample #: 4 Grid Opening Size: 0.01124
Client Sample #: 04 Area Examined: 0.04496 mm" GRID BOX: Magnification; 20 000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/31/02
Analysis Performed By: ROMAN PEYSAKHOV
GO. Structure Structure Type Lengtti ID of Structure N or V EDS No (Nooadb F B C M >=05 M >=5p Chrys Amphibole Nonasb Ambig/ND No Coord <5p Elements)
I Struct = > 0,5n > 5:1 Aspect Ratio Grid acceptance: A- 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 M >5p y'= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHtBOLES 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 Actinolite NSO = No Structures Detected
CONFIDENTIAL, CITY_21MC100_003470736 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000176701
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NYC-WTC_000176701Source: NYC Law Department, mirrored locally
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Laboratory report documenting transmission electron microscopy analysis of an air sample collected from a New York City Board of Education facility.
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