TEM Asbestos air sample results, NYC BOE, Jan 2002
Machine-extracted title · confidence 95%
Laboratory report documenting transmission electron microscopy analysis of an air sample collected from a NYC Board of Education site on January 27, 2002.
GO. Structure Structure Type Length ID of Structure N or EDS
No (Nonadb !
F B C M >=05 p •=5p Chrys Amphibole Nonasb Ambig/ND
Elements) j
No Coord <5p
4/^----
Struct = > 0.5)1 >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 Y vE
'J- EDS spectrum conforming to laboratory holes or opaque areas I
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 : I
Tremolite
M = Matrix
NSD = No Structures Detected
Actinolite Non-Identified
j.. I T
CONFIDENTIAL, CITY_21MC100_003467554
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000180802
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NYC-WTC_000180802Source: NYC Law Department, mirrored locally
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