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Asbestos air sample data sheet, Sample 9, Feb 2002
Machine-extracted title · confidence 90%Technical data sheet recording TEM analysis parameters and results for the ninth air sample from PS 234M collected in February 2002.
NYC-WTC_000181202Page image
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NYC 9/11 Public Portal Document
TEM Asbestos fair) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 6798 Filter Type / Filter Area: MCE 385 mnV Lab Sample #: 9 Grid Opening Size: 0.01124 Client Sample #: 09 Area Examined: 0.04496 mm-
GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2/24/02
Analysis Performed By: l\A ROMAN PEYSAKHOV
GO. Structure Structure Type Length ID of Structure N or V EDS (Nonadb No F B C M >=05 u : =51J Chrys Amphibole Nonasb .4.mbig/ND No Coord <5u Elements)
23^^
-1
Struct = > 0.5p >5:1 Aspect Ratio Grid acceptance:
Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals <10% particulate coverage >50% coverage ate laboratory identification criteria observed least 20 unfolded or overlapped grid squares <5% F B C M >5U '/= EDS spectrum conlorming to laporatory holes or opaque areas identification criteria observed Chrysotile 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 Non-Identified NSD = No Structures Detected i Actinolite I
CONFIDENTIAL, CITY_21MC100_003468125 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000181202
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NYC-WTC_000181202Source: NYC Law Department, mirrored locally
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