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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_000179182
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NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Clieni NYC BOE Volume (liters): 1928 Lab Gr 5970 Filter Type ' Filter Area: MCE 385 mm- Lab Sue 1 2) Grid Opening Size: 0.01124

Client 5 AreaExainined: 0.04496 mnT

GRID L TV - Magnitication: 20,000 GRID 1! bSI Acceleratin'’ Voltage: 100 KeV # Grid 4 Analysis Date: 11/25/01

Analysis Performed By: roman PhVS.AKHOA'

__ GO Ificture Structure Type Length ID of Structure \ or A EDS (Nonadb No F B I C M i >=05 p >=5|j Chrys j Amphiboie i Nonasb Ambig/ND ’ No <5u Elements)

1

/i

Struct = . I .5 : .Aspect Ratio Grid acceptance: 9= Positive dr;-'. m pattern properties conforming to «50% undissblved litter, overlapped or loliJed Totals laboratory ioe’?!!-,. -^on criteria observed <10% particulate coverage >50% coverage ate

9= EDS spec-,rr onlorming to -aboratory least 20 unfolded or overlapped grid souares <5% holes or opaque areas c M >5u identification n i-' observed Clirysotile .AMPHIBOLES Amphibole F = Single ri" Amosite B = 3undle > I liber diameter apart Crocidolite Ambiguous I C = Cluster , ‘■.ections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identitied Actinolite NSC = No .Sin :r elected

CONFIDENTIAL, CITY_21MC100_003458402 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000179182

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NYC-WTC_000179182Source: NYC Law Department, mirrored locally

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