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TEM asbestos air sample results, NYC BOE, Mar 2002
Machine-extracted title · confidence 95%Laboratory record documenting TEM analysis of an air sample for asbestos collected by the NYC Board of Education on March 10, 2002.
NYC-WTC_000181402Page image
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NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 7017 Filter Type / Filter Area: MCE 385 mm* Lab Sample #: 5 Grid Opening Size: 0.01124 Client Sample #: 05 Area Examined: 0.04496 mm^ GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/10/02
C Analysis Performed By: . MARK PEYSAKHOV
GO. Structure Structure Type Length ID of Structure NorV EDS No (Nonadb F B C M >=05 u >==5)j Chrys Amphibole Nonasb Ambig/ND No Coord <5u Elements)
— <-■
Struct = > 0.5g > 5:1 Aspect Ratio Grid acceptance: V= Positive diffraction pattern properties conforming to "50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed ":10% particulate coverage >50% coverage ate leas: 20 unfolded or overlapped grid squares <5% F B C M >5u V= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chiysotile ' amphiboles' i 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
CONFIDENTIAL, CITY_21MC100_003468443 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000181402
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NYC-WTC_000181402Source: NYC Law Department, mirrored locally
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Laboratory record documenting TEM analysis of an air sample for asbestos collected by the NYC Board of Education on March 10, 2002.
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