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TEM Asbestos air sample results, NYC BOE, Feb 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_000183963Page image
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NYC 9/11 Public Portal Document
TEM Asbestos ( air) Count Sheet Client Name: N\'C BOE Volume (liters): 1800 Lab Group #: 6856 Filter Type / Filter Area: MCE 385 mm= Lab Sample #: 18 Grid Opening Size: 0.01124 Client Sample #: 21 Area Examined: 0,04496 mm-
GRID BOX: Magnification: 20.000 GRID ID: J. Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2/27/02
;4nalvsis Performed Bv: MARK PEYSAKHOV
GO. Structure i Structure Type Length D of Structure N or > EDS (Nonadb No F B C M Chrys Amphibole Nonasb | Ambig/ND No Coord <5li Elements)
Sti'uct = > 0.5pr >5:1 Aspect Ratio Grid acceptance:
7= Positive diffraction pattern properties conforming to <50% undissotved filter overlapped or folded Totals <10% particulate coverage >50% coverage ate laboratory identification criteria obse'ved least 20 unfolced orovertapoed grid squares <5% F B i C M >5p 7= EDS spectrum confomning to laboratory holes or opaque areas identification criteria observed Clirysotile 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
CITY_21MC100_003103604
NYC-WTC_000183963
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NYC-WTC_000183963Source: NYC Law Department, mirrored locally
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Laboratory data sheet recording transmission electron microscopy analysis of an air sample collected from a New York City Board of Education site.
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