TEM Asbestos air sample results, NYC BOE, Jan 2002
Machine-extracted title · confidence 50%
Laboratory report documenting transmission electron microscopy analysis of air samples collected from NYC Board of Education facilities on January 27, 2002.
GO, Structure Structure Type Length ID Of Structure N or 'Z EDS I
No (Nonadb >
F B C M >=05 M >=5p Chrys Amphibole Nonasb Ambig/ND
No Coord <5u Elements) i
?! 72^
if
Struct = > 0.5(J .>5:1 Aspect Ratio Grid acceptance:
Positive diffraction pattern properties conforming to <50% 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
V= EDS spectrum conforming to laboratory
C M >5u
holes or opaque areas
identification criteria observed : Chrysotile
AMPHIBOLES I Amphibole
F = Single Fiber Amosite
B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite i Ambiguous
C = Cluster (>3 Intersections) Anthophyllite Non-.Asbestos
Tremolite
M = Matrix ! Non-Identified
Actinolite
NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC100_003467557
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000180805
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NYC-WTC_000180805Source: NYC Law Department, mirrored locally
Laboratory report documenting transmission electron microscopy analysis of air samples collected from NYC Board of Education facilities on January 27, 2002.