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 Nor \ EDS
No >=05 p .1 ■>=5p (Nonadb
F B C M Chrys Amphibole Nonasb Ambig/ND
No Coord <5p , Elements)
Struct = > 0.5u. .>5:1 Aspect Ratio Grid acceptance:
• , Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals
laboratory identification criteria observed <10% particulate coverage >50% coverage ate
least 20 unfolded or overlapped grid squares <5% F B C M >5|j
•/= 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 Actinolite Non-Identified
NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC100_003433806
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000175958
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NYC-WTC_000175958Source: 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.
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.