GO. Structure Structure Type Length ID of Structure N or < j EDS :
No . ,. \ (NonadD
F B C M >=05 pi Chrys Amphibole Nonasb Ambiq/NO ! ' ,
No Coord <5|J : Elements) '
Struct = > Crip > 5:1 .Aspect Ratio Grid acceptance:
7= 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 I C M I >5c
\'= EDS spectrum conforming to laboratory holes or opaque areas
identification criteria observed Chrysotile
A.MPHIBOLES 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 1
NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC100_003470900
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000176814
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NYC-WTC_000176814Source: 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 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 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 2, 2002.