TEM asbestos air sample results, NYC BOE, Nov 2001
Machine-extracted title · confidence 95%
Laboratory report documenting transmission electron microscopy analysis of air samples collected from NYC Board of Education facilities on November 7, 2001.
GO, Structure Structure Type Length ID of Structure N or EDS
(Nonadb
No F B C M >=05 )j : =5|J Chrys Amphibole Nonasb Ambig/ND
No Coord <5u Elements)
57 P 7^ w
H
Struct = > 0.5g .>5:1 Aspect Ratio Grid acceptance:
Positive diffraction pattern properties conforming to i;50% undissolved filter, overlapped or folded Totals
laboratory identification criteria observed <10% particulate coverage >50% coverage ate
least 20 unfoldeo or overlapped grid squares <5% F B C M >5u
EDS 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
Tremolite
M = Matrix Non-Identified
Actinolite
NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC100_003459126
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000179408
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NYC-WTC_000179408Source: NYC Law Department, mirrored locally
Laboratory report documenting transmission electron microscopy analysis of an air sample collected from a New York City Board of Education site on February 2, 2002.
Laboratory report documenting transmission electron microscopy analysis of an air sample collected from a New York City Board of Education site on February 2, 2002.
Laboratory report documenting transmission electron microscopy analysis of an air sample collected from a New York City Board of Education site on February 2, 2002.