TEM asbestos air sample results, NYC BOE, Feb 2002
Machine-extracted title · confidence 50%
Laboratory report documenting transmission electron microscopy analysis of air samples collected from NYC Board of Education facilities on February 3, 2002.
GO. Structure Structure Type Length ID of Structure N or EDS
No (Nonadb
F B C M >=05 p >=5|j Chrys Amphibole Nonasb Ambig/ND
No Coord <5p Elements)
^4 (r
2/-
Struct = > O .np >5:1 Aspect Ratio Grid acceptance:
>/= Positive diffractron pattern properties conforming to “^^0% 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 >5m
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_003467692
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000180893
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NYC-WTC_000180893Source: 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 1, 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 1, 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 1, 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.