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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 by the NYC Board of Education.

NYC-WTC_000175441
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Scanned page image, NYC-WTC_000175441
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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 5 Lab Sample # 15 Grid Opening Size 0 01124 Client Sample # 15 Area Examined 0 04496 mm^

GRID BOX Magnification 20 000 GRIDED Accelerating Voltage 100 KeV # Grid Openings 4 Analysis Date 8/23/02

Analysis Performed By ROMAN PEYSAKHOV

GO Structure Structure Type Length ID of Structure N or v EOS (Nonadb No F B C M 05T : 5p Chrys Amphibole Nonasb Ambig/ND . No Coord Elements) 5p

ZO —!/-------

z= —

Struct = > 0 5p >5 I Aspect Ratio Gnd acceptance

'J Positive diffracbon pattern properties conforming to 50 / undissolved filter overlapped or folded Totals <10/ particulate coverage 50/ coverage ate laboratory identification critena observed least 20 unfolded or overlapped gnd sguares 5 / F B C M 5u EDS spectrum conforming to laboratory holes or opaque areas identification enter a observed Chrysotile AMPHIBOLES Amphibole F Sngle Fiber Amosite 8 Bundle ( 3 fibers 1 fiber d ameter apart Crocidolite Ambiguous C Cluster ( 3 Intersections) Anthophyllite Non Asbestos Tremolite M Matnx Actinolite Non Identified NSD No Structures Detected

CONFIDENTIAL, CITY_21MC100_003431038 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000175441

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NYC-WTC_000175441Source: NYC Law Department, mirrored locally

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