TEM Asbestos air sample data, Sample 14, March 2002
Machine-extracted title · confidence 95%
Technical data sheet for the fourteenth transmission electron microscopy analysis of an air sample collected from a NYC Board of Education site in March 2002.
GO. Structure Structure Type Length ID of Structure N or N EDS
No (Nonadb
F B C >=05 M >=5iJ Chrys Amphibole Nonasb Ambig/ND
No Coord <5u Elements)
22 z^x
Struct = > 0.5p >5:1 Aspect Ratio Grid acceptance:
y = 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 >5p
vi= 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 Actinolite Non-Identified
NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC100_003468800
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000181691
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NYC-WTC_000181691Source: NYC Law Department, mirrored locally