GO. Structure structure Type Length ID of Structure N or V* EDS
No >=05 p (Nonadb
F B C M >=5|j Ctirys Amphibole Nonasb Ambig/ND
No Coord <5|j Elements)
I■
Struct = > 0.5u _> 5:1 Aspect Ratio Grid acceptance:
Positive diffracSon pattern properties conforming to "^0% undissolved filter, overtapped 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 >5u
A- EDS spectrum conforming to eboratory holes or opaque areas
identification cntena observed Chrysotile
AMPHIBOLES I 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_003468527
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000181465
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NYC-WTC_000181465Source: 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 April 4, 2002.
Laboratory report documenting transmission electron microscopy analysis of an air sample collected from a New York City Board of Education site on January 31, 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.
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.