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TEM Asbestos air sample results, NYC BOE, Aug 2002
Machine-extracted title · confidence 95%Laboratory report documenting transmission electron microscopy analysis of an air sample collected from a New York City Board of Education site.
NYC-WTC_000175407Page image
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OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1952 Lab Group #: 8739 Filter Type / Filter Area: MCE 385 mm’ Lab Sample #: 15 Grid Opening Size: 0.01124 Client Sample #: 15 Area Examined: 0.04496 mm^ GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: too KeV # Grid Openings: 4 Analysis Date: 8/23/02
Analysis Performed By: ROMAN PEYSAKJ-IOV
GO. Structure Structure Type Length ID of Structure NorV EDS (Nonadb No F B C M >=05 p Ctirys Amphibole Nonasb Ambig/ND _ No Coord <5p Elements)
Slums'
Struct = > 0.5p .> 5:1 Aspect Ratio Grid acceptance: a/= Positive ditfraction 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 overlapped grid squares <5% F B C M >5u >/= EDS spectrum conforming to laboratory holes or opaque areas ' identification criteria obsen/ed Chrysotile A.MPHIBOLES Amphibole F = Single Fiber Amosite 3 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite Non-Identified NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC100_003430924 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000175407
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NYC-WTC_000175407Source: NYC Law Department, mirrored locally
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