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Asbestos air sample data sheet, Lab Sample #11, Mar 2002
Machine-extracted title · confidence 90%Technical data sheet recording parameters and analysis results for the eleventh asbestos air sample collected from a NYC Board of Education site.
NYC-WTC_000180435Page image
OCR text
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NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 7175 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 11 Grid Opening Size: 0.01124
Client Sample #: 11 Area Examined: 0.04496 mm-
GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/23/02
Analysis Performed By: MARK PEYSAKHOV
GO. Structure Structure Type Length ID of Structure N or v EDS (Nonadb No F B C W >=05 p >=5iJ Chrys Amphibole Nonasb Ambig/ND Elements) No Coord <5u
a -3 -aTx-
Struct = > 0.5pi >5:1 Aspect Ratio Grid acceptance: ^1= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Tot^ laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5m EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile rAMPHlBOLES ) Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite i Ambiguous C = Cluster (>3 Intersections) ! Anthophyllite Non-Asbestos I Tremolite M = Matrix Actinolite Non-Identified NSD = No Structures Delected
CONFIDENTIAL, CITY_21MC100_0 03466992 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000180435
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NYC-WTC_000180435Source: NYC Law Department, mirrored locally
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