GO. Structure Structure Type Length ID of Stnjcture Norv EDS
No >=05 g Amphibole Nonasb Ambig/ND (Nonadb
F B C M >=5|J Chrys
No Coord <5p Elements)
T
ef
^7
Struct = > 0.5g _> 5:1 Aspect Ratio Grid acceptance:
Positive diffraction pattern properties confopning 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 >5u
V= 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 I Ambiguous
C = Cluster (>3 Intersections) Anthophyllite i Non-Asbestos
Tremolite
M = Matrix Actinolite i Non-Identified
NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC100_003433688
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000175897
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NYC-WTC_000175897Source: 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.
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 filter sample collected from a New York City Board of Education site.
Laboratory report documenting transmission electron microscopy analysis of an air filter sample collected from a New York City Board of Education site.