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TEM Asbestos air sample results, NYC BOE, Nov 2001

Machine-extracted title · confidence 95%

Laboratory report documenting transmission electron microscopy analysis of an air sample collected for the NYC Board of Education on November 25, 2001.

NYC-WTC_000179183
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NYC 9/11 Public Portal Document

TEM Asbestos fa j Count Sheet Clien! NYC BOE Volume I liters): 1928 Labt 5970 Filter Type / Filte;- Area: MCE 385 mm- Lab S-.. iS Grid Opening Size: 0.01124

Clieni IS Area Exaniined: 0.04496 mm-

GRID i Magnificatbur 20,000 GRID i: Accelerating S nliaue: 100 KeV # Grid 112.N “1 Anah si.s Date: 11/25/01

Analysis Performed By; roman Pl..’; rA cKHOV

GO Structure Structure lype j Length ID of Structure y or 9 EDS No (Nonadb F I B C M ! >=05 p >=5p Chrvs Amphiboie j Nonasb Ambig/ND <5p ' Elements)

fS t

1—r

Struct = 5:! Aspect Ratio Grid acceptance: d= Positive ml I . pattern properties conforming to <50% undissolved titer, overlapped loiried Totals <10% particulate coverage coverage ate laboratory derpiuc.-.tion criteria observed least 20 unfolded or overlapped grio squares <5% F B C M >5p 9= EDS specu.A' lonforming to laboratory holes or opaque areas identification c-ib.-ria observed Chrysotile AMPHIBOLES Amphibo le F = Single Filu Amosite B = Bundle I - (11’ <1 liber diameter apart Crocidolite ' Ambtgtious C = Sluste' : Hi lections I Anthophyllite Non-Asbe.stos Tremolite I M = Main; NSD = Nc Sa.. Detecled Actinolite Non-IdentnioS j 1 i.

CONFIDENTIAL, CITY_21MC100_003458405 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000179183

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NYC-WTC_000179183Source: NYC Law Department, mirrored locally

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