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TEM Asbestos air sample results, WC BOE, Nov 2001
Machine-extracted title · confidence 95%Laboratory report documenting transmission electron microscopy analysis of an air sample collected at WC BOE on November 15, 2001.
NYC-WTC_000185344Page image
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OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet Client Name: WC BOE Volume (liters!: 1936 Lab Group #: 5891 Filter Type / EUter Area: MCE 385 mm- Lab Sample #: 6 Grid Opening Size: 0.01124
Client Sample #: 6 Area Examined: 0.04496 mm-
GRID BOX: 5 3 f Magnification: 20,000 GRIDED: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 11/15/01
Analysis Performed By: ROMAN PEYSAKHOV
GO. Structure Structure Type Length ID of Structure N or N EDS (Nonadb No F B M >=05 p >=5(J Chrys Amphibole Nonasb Ambig/ND z-\ No Coord <5p Elements)
! Ti i
7 xJt II
Struct = > 0.5(1 >5:1 Aspect Ratio Grid acceptance: 9= Positive diffraction pattern properties conforming to <50% undissoived filter, overlapped ar folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate
9= EDS spectrum conforming to laboratory least 20 unfolded or ove,napped grid squares <5% ) F B i C M ) >5p hoies or opaque areas ——!------ identification criteria observed Chrysotile AMPHIBOLES Amphibole j = = Single Fiber Amosite 3 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-A,sbestos Tremolite M = Matrix Non-Ideiitified Actinolite NSD = No Structures Detected
CITY_21MC100_003106420
NYC-WTC_000185344
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NYC-WTC_000185344Source: NYC Law Department, mirrored locally
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