GO. : Structure Structure Type Length ID of Structure Nor v EDS
No (Nonadb
F B C M >=05 p >=5p Chrys Amphibole Nonasfc Atnbig/ND
LNo} Coord <5p Elements)
) i
---- k
1 !
Struct = > 0.5p > 5:1 Aspect Ratio Grid acceptance:
\'= 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 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_003467202
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000180586
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NYC-WTC_000180586Source: NYC Law Department, mirrored locally
Laboratory report documenting transmission electron microscopy analysis of an air sample for asbestos collected from NYC Board of Education facilities.
Laboratory report documenting transmission electron microscopy analysis of an air sample for asbestos collected from NYC Board of Education facilities.
Laboratory report documenting transmission electron microscopy analysis of an air sample for asbestos collected from NYC Board of Education facilities.