TEM asbestos air sample results, NYC BOE, Feb 2002
Machine-extracted title · confidence 95%
Laboratory report documenting transmission electron microscopy analysis of air samples for asbestos collected from a New York City Board of Education facility.
GO. Structure Structure Type Length ID of Structure N or y EDS
No (Nonadb
F B C M >=06 (J >=5(j Chrys Amphibole Monasb Ambig/ND
No Coord <5u Elemenls)
Struct = > 0.5(1 >5:1 Aspect Ratio Grid acceptance.
A- Positive diffraction pattern properties conforming to undissolved filter, overlapped or folded Tot^
laboratory identification criteria observed 10% particulate coverage >50% coverage ate
least 20 unfolded or overlapped grid squares <5% F B C M >5|j
'1= EDS spectrum conforming to laboratory holes or opaque areas
identification criteria observed Chrysotile
I AMPHIBOLES Amphibole
F = Single Fiber I Amosite
B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous
C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos
Tremolite
M = Matrix Actinolite Non-Identified
NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC100_003433812
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000175964
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NYC-WTC_000175964Source: NYC Law Department, mirrored locally
Laboratory report documenting transmission electron microscopy analysis of an air filter sample collected from a New York City Board of Education site.
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Laboratory report documenting transmission electron microscopy analysis of an air sample collected from NYC Board of Education facilities on April 30, 2002.
Laboratory report documenting transmission electron microscopy analysis of an air filter sample collected from a New York City Board of Education site.
Laboratory report documenting transmission electron microscopy analysis of an air filter sample collected from a New York City Board of Education site.