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TEM Asbestos air sample results, NYC BOE, June 2002
Machine-extracted title · confidence 50%Laboratory report documenting TEM analysis of air samples collected from NYC Board of Education facilities on June 22, 2002.
NYC-WTC_000179857Page image
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NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1816 Lab Group #: 8214 Filter Type / Filter Area: MCE 385 mm" Lab Sample #: 5 Grid Opening Size: 0.01124 Client Sample #: 07 Area Examined: 0.04496 mm^ GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: too KeV # Grid Openings: 4 Analysis Date: 6/22/02
Analysis Performed By: MARK PEYSAKHOV
GO. Structure Structure Type Length ID of Structure Norv EDS No (Nonadb F B C M >=05 |j >=5p Chrys Amphibole Nonasb Ambig/ND No Coord <5p Elements)
■
Struct = > O.Sp > 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'ovedapped grid squares <5% F B C M >5u •/= EDS spectrum conforming to laboratory holes or opaque areas identfication criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber j 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_003461716 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000179857
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NYC-WTC_000179857Source: NYC Law Department, mirrored locally
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