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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 for asbestos collected by the NYC Department of Education.

NYC-WTC_000175509
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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): 1928 Lab Group #: 8759 Filter Type / Filter Area: MCE 385 mm^ 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: 8/25/02

Analysis Performed By: ivp ROMAN PEYSAKHOV

GO Structure Structure Type Length ID of Structure Nor 7 EDS No (Nonadb F B C M >=05 p >=5|J Chrys Amphibole Nonasb Ambig/ND Elements) No Coord <5p

2

Struct = > 0 5u >51 Aspect Ratio Gnd acceptance 4= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded laboratory identification critena observed <10% particulate coverage >50% coverage ate

n/= EDS spectrum conforming to laboratory least 20 unfolded or overlapped grid squares <6% holes or opaque areas F B c M >5u identification cnteria observed Chrysotile AMPHIBOLES Amphibole F’= Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Croadolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Acbnolite NSD = No Structures Detected

CONFIDENTIAL, CITY_21MC100_003431304

SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000175509

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NYC-WTC_000175509Source: NYC Law Department, mirrored locally

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Laboratory results for TEM asbestos air sampling conducted at NYC Department of Education facilities in August 2002.

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