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TEM Asbestos air sample results, NYC BOE, Mar 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 facility.
NYC-WTC_000181515Page image
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OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet Client Name: m^C BOE Volume (liters): 1944 Lab Group #: 7110 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 7 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: 3/17/02
Analysis Performed By: MARK PEYSAKHOV
GO. Structure Structure Type Length ID of Structure N or N EDS No (Nonadb F B C M >=05 p ■=5p Chrys Amphibole Nonasb Ambig/ND No Coord <5|j Elements)
Struct = > 0.5p > 5-. 1 Aspect Ratio Grid acceptance. 'V= Positive diffracton pattern properties conforming to "’0% 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 >5p EDE spectrum conforming to laboratory 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 M = Matrix Tremolite Actinolite Non-Identified NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC1OO_OO3468598 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000181515
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NYC-WTC_000181515Source: NYC Law Department, mirrored locally
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