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TEM Asbestos Air Sample Data Sheet, Aug 2002
Machine-extracted title · confidence 90%Technical data sheet recording transmission electron microscopy analysis parameters and results for air sample number 16 collected August 25, 2002.
NYC-WTC_000175127Page image
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NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet Client Name: NVCBOE Volume (liters): 1936 Lab Group #: 8760 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 16 Grid Opening Size: 0.01124
Client Sample #: 16 Area Examined: 0.04496 mm- GRID BOX: Magnitlcation: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 8/25/02
Analysis Performed By: ZZEZ ROMAN PEYSAKHOV
GO. Structure Structure Type Length ID of Structure N or 1 EDS No (Nonadb F B C M >=05 p Chrys Amphibole Nonasb Ambig/ND No Coord <5p Elements)
,?truci = > 0.5n > 5:1 Aspect Ratio Grid acceptance: ■/= Positive dihracuor pattern properties Gonforming to <50% undissolved filter, overlapped or folded Totals labor’atory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M , >5m 1/= EOS spectrum confonrang to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amrcsite E = 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_003430261
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000175127
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NYC-WTC_000175127Source: NYC Law Department, mirrored locally
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