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TEM Asbestos bulk sample results, NYC BOE, Apr 2002
Machine-extracted title · confidence 95%Laboratory report documenting transmission electron microscopy analysis of a bulk asbestos sample from the NYC Board of Education dated April 10, 2002.
NYC-WTC_000178868Page image
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NYC 9/11 Public Portal Document
TEM Asbestos fair) Count Sheet Client Name: NYC BOE Volume (liters'): 1776 Lab Group #: 7376 Filter Type / Filter Area: MCE 385 mnr Lab Sample #: 6 Grid Opening Size: 0.01124 Client Sample #: 08 Area Examined: 0.04496 mm* GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: iOOKeV # Grid Openings: 4 Analysis Date: 4/10/02
Analysis Performed By: MARK PEYSAKHOV
GO. Structure Structure Type Length ID of Structure N or EDS No (Nonadb F B C M >=05 (J Chrys Amohibole Nonasb Ambig/ND No Coord <5p Elements)
Struct = > 0.5p > 5:1 Aspect Ratio Grid acceptance:
9= Positive diffraction pattern properties conlorming lo <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 /= EOS spectrum conforming to laboratD.y holes or opaque areas identification criteria observed Chrysotile ! AMPHIBOLES i Amphibole F = Single Fiber ! Amosite B = Bundle (<3 fibers <1 fiber diameter aoarl Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite Non-Identified NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC100_009505365 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000178868
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NYC-WTC_000178868Source: NYC Law Department, mirrored locally
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