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TEM asbestos air sample results, OTC BOE, Feb 2002
Machine-extracted title · confidence 95%Laboratory report documenting transmission electron microscopy analysis of air samples collected from OTC Board of Education facilities on February 10, 2002.
NYC-WTC_000183755Page image
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NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet Client Name: OTC BOE Volume (liters): 1816 Lab Group #: 6618 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 15 Grid Opening Size: 0.01124
Client Sample #: 18 Area Examined: 0.04496 mm-
GRID BOX: MaoniFication: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 AmalysisDate: 2/10/02
Analysis Performed By: roman peysakhov
GO, ! Structure Structure Type Length ID of structure N or V EDS ■ No >=05 pi r“ '^5|j (Nonadb C M Chrys Amphibole Nonasb Ambig/ND No Coord - <5U Elements)
PzJ If I
//^
Struct = > O.Sp > 5:1 Aspect Ratio Grid acceptance: A- Positive diffraction pattern properties conforming to <50% undissolved filler, overlapped or folded Totals <10% particulate coverage >50% coverage ate laboratory identiticatlon criteria observed
EDS spectrum conforming to laboratory least 20 unfolded or overlapped grid squares <5% fTb c M >5p holes or opaque areas identification criteria observed Chi'ysotile 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 Actinolite ! Non-Identified NSD = No Slructures Detected - _L...
CITY_21MC100_003103108
NYC-WTC_000183755
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NYC-WTC_000183755Source: NYC Law Department, mirrored locally
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