TEM Asbestos air sample results, NYC BOE, Mar 2002
Machine-extracted title · confidence 95%
Record containing transmission electron microscopy findings for an asbestos air sample collected from a New York City Board of Education location in March 2002.
GO. Structure Structure Type Length ID of Structure Nory EDS
No >=05 p (Nonadb
F B C M Chrys Amphibole Nonasb Ambig/ND
No . Coord <5p Elements)
Struct = > O.Su > 5;1 Aspect Ratio Grid acceptance;
t/= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals
laboratory identifioation criteria observed <10% particulate coverage >50% coverage ate
least 20 unfolded 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
I Tremolite
M = Matrix Non-ldentified
Actinolite
NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC100_003470480
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000176531
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NYC-WTC_000176531Source: NYC Law Department, mirrored locally
Laboratory report documenting transmission electron microscopy analysis of an air sample collected from a NYC Board of Education site on January 26, 2002.
Laboratory report documenting transmission electron microscopy analysis of an air sample collected from a New York City Board of Education site on April 4, 2002.