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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 from a New York City Board of Education facility.
NYC-WTC_000179170Page image
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NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1952 Lab Group #: 5960 Filter Type / Filter Area: MCE 385 ram- Lab Sample #: Grid Opening Size: 0.01124 Client Sample #: 15 Area Examined: 0.04496 mm* GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 11/24/01
Analysis Performed By; MARK PEYSAKHOV
GC. Structure Structure Type I Length ID of Structure N or N EDS I (Nonadb I No F B C M >=05 p I >=5|j Chrys Ampniboie ! Nonasb Arabig/ND No Coord <5p Elements) i I
- -A 1----
Struct = > 0.5p >5:1 Aspect Ratio Grid acceptance: r/= Positive diffraction pattern properties conforming to <50% undissolued filter, overlapped or folded Totals laboratory' identification critena observed <10% particulate coverage >50% coverage ate least 2C unfolded or overlapped grid squares <5% F B C M >5u 9= EDS spectrum conforming to laboratory holes or opaque areas Identification cnteria observed Clirysotile AMPHIBOLES Amphibole F = Single Fiber I 1 Amesite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthopriyilite Non-Asbestos Tremolite M = Matrix Actinolite Non-Identified NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC100_003458373 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000179170
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NYC-WTC_000179170Source: NYC Law Department, mirrored locally
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