Laboratory report documenting transmission electron microscopy analysis of an air sample collected from a New York City Department of Education school.
GO Structure Structure Type Length ID of Structure N or / EDS
iNonadb
No F B C M >=05 p Chrys Amphibole Nonasb Ambig/ND
No Coord Elements)
1
Jr
. . If
Q ((
Snuct = > 0 5a >5 1 Aspect Ratio Grid acceptance
\= Positive diffraction oattern properties conforming to <50% undissolved liter, ovehapped or folded Totals
laboratory identification criteria ooservec <10% paniculate coverage >50% coverage ate
least 20 unfolded or overlapped grid squares <5% FIB C M >5l
'. = EDS soectrum conforming to laooratory holes or opaque areas
loentificEtipn criteria opserved Chrysotile ।
AMPHIBOLES
F = Single Fioer
Amphibole i
Amosite
. B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous
C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos
Tremolite
M = Matrix Non-ldentified
Actinolite
NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC100_003431395
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000175528
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NYC-WTC_000175528Source: NYC Law Department, mirrored locally