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TEM Asbestos air sample results, NYC BOE, Oct 2001
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_000179348Page image
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OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume niters): 1928 Lab Group #: 5812 Filter Type / Filter Area: MCE 385 mm2 Lab Sample #: 17 Grid Opening Size: 0.01124 Client Sample #: 17 Area Examined: 0.04496 mm^ GRID BOX: ar? Magnification: 20 000 GRID IP: Accelerating Voltage: 100 KeV # Grid Openings: 4
Analysis Performed By: MARK PEYSAKHOV
GO, Structure Structure Type Length ID of Structure N or V EDS No (Nonadb F B C M ’=05 p >=5p Chrys Amphibole Nonasb Ambig/ND No : Coord <5m Elements)
Ct—
Struct = > 0.5(1 >5:1 Aspect Ratio Grid acceptance: 11= Positive diffratdion pattern properties conforming to <«>% 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 I C M >5p yl- EDS spectrum conforming to laboratory holes or opaque areas -_J---- 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 Actinolite NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC100_003459001 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000179348
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NYC-WTC_000179348Source: NYC Law Department, mirrored locally
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