TEM Asbestos air sample results, NYC BOE, Jan 2002
Machine-extracted title · confidence 95%
Laboratory report documenting transmission electron microscopy analysis of an air sample collected from a NYC Board of Education site on January 26, 2002.
GO, Structure Structure Type Length ID of Structure NorN EDS
No (Nonadb
F B C M i >=05 p Chrys Amphibole Nonasb AmbigZND
No Coord <5u Elements)
Z
Struct = >0.5n > 5:1 Aspect Ratio Grid acceptance:
^1= 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 1 >5u
x/= EDS spectrum conforming to laboratory holes or opaque areas
identification criteria observed Chiysotile
AMPHIBOLES Amphibole
F = Single Fiber Amosite
B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous
C = Cluster (>3 Intersections) Anthoptiyllite - Non-Asbestos
Tremolite )
M = Matrix Actinolite i Non-Identified
NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC100_003467529
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000180783
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NYC-WTC_000180783Source: 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.