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TEM Asbestos air sample results, NYC BOE, Apr 2002
Machine-extracted title · confidence 95%Laboratory report documenting transmission electron microscopy analysis of an air sample collected by the NYC Board of Education on April 18, 2002.
NYC-WTC_000182950Page image
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NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1816 Lab Group #: 7459 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 7 Grid Opening Size: 0.01124
Clientsample #: 10 Area Examined: 0.04496 mm^
GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 4/18/02
Analysis Performed By: MARK PEYSAKHOV
GO. Structure Structure Type Length ID of Structure -N or 7 EDS No (Nonadb F B C M >=05 (J Ctirys Amphibole Nonasb Ambig/ND No Coord <5m Elements)
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Struct = > 0.5p >5:1 Aspect Ratio Grid acceptance: 7= Positive diffraction pattern properties conforming to :50% undissolved filter, overlapped or folded Totals 10% particulate coverage >50% coverage ate laboratory identification criteria observed 7= EOS spectrum conforming to laboratory least 20 unfolded or overlapped gnd squares <5% I F I B c M >5m 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 I Non-Identified Actinolite NSD = No Structures Detected
CITY_21MC100_003101894
NYC-WTC_000182950
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NYC-WTC_000182950Source: NYC Law Department, mirrored locally
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Technical data sheet recording laboratory parameters and results for air sample number 10 analyzed for asbestos on March 7, 2002.
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