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TEM Asbestos air sample results, NYC BOE, Nov 2001
Machine-extracted title · confidence 95%Laboratory report documenting transmission electron microscopy analysis of an air sample collected for the NYC Board of Education on November 27, 2001.
NYC-WTC_000179200Page image
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NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet Client Name; NYC BOE Volume /liters): 1936 Lab Group #: 5975 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 10 Grid Opening Size: 0.01124 Client Sample #; 10 Area Examined: 0.04496 mm* GRID BOX: Magnification: 20,000 GRIDED: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 11/27/01
Analysis Performed By: ROMAN PEYSAKHOV
GO, Structure Structure T ype Length ID ot Structure N or n/ EDS No (Nonadb, F B ' C M >=05 u :>=5p Chrys Amphiboie Nonasb Ambig/ND No Coord <5u Elements)
3 li IZEl /(
Struct = > 0.5(1 .> 5;1 Aspect Ratio Grid acceptance; -,V Fcsitive diffraction pattern properties conforming to <50% ondissoived filter, overlapped or folded Totals laooratory identification criteria observed <10% particulate coverage >50% coverage ate
'J= EDS spectrum conforming to laboratory least 20 unfolded or overlapped grid squares <5% holes or opaque areas F B I C M identification criteria observed Chrysotile j AMPHIBOLES Amphibole F = Single Fiber Amosite 3 = Bundle (<3 fibers <1 liber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos M = Matrix Tremolite Actinolite Non-Identified NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC100_003458446 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000179200
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NYC-WTC_000179200Source: NYC Law Department, mirrored locally
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