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TEM asbestos air sample results, NYC BOE, Mar 2002
Machine-extracted title · confidence 50%Laboratory report documenting transmission electron microscopy analysis of an air sample collected by the NYC Board of Education on March 27, 2002.
NYC-WTC_000180536Page image
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NYC 9/11 Public Portal Document
TEM Asbestos fair) Count Sheet Client Name: NYC BOE Volume (liters): 1928 Lab Group #: 7233 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 11 Grid Opening Size: 0.01124 Client Sample #: 11 Area Examined: 0.04496 mm- GRID BOX: GRID ID: w Magnification: 20,000 Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/27/02
Analysis Performed By: ROMAN PEYSAKHOV
GO. Structure Structure Type Length IO of Structure Norv EDS No (Nonadb F B C >=05 M Chrys Amphibole Nonasb Ambig/ND No ' Coord <5iJ Elements)
w© ZEZ /f___ rzTz fj___
Struct = > 0.5p .> 5:1 Aspect Ratio Grid acceptance: Positive diffraction pattern properties conforming to <50% 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 C M >5u 7= EDS spectrum conforming to laboratory 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 Non-Identified Actinolite i NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC100_003467137 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000180536
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NYC-WTC_000180536Source: NYC Law Department, mirrored locally
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