TEM Asbestos air sample data, Sample 9, March 2002
Machine-extracted title · confidence 95%
Technical data sheet for the ninth 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 NorV EDS
(Nonadb
No F B C M >=05 p I>-5(J Chrys Amphibole Nonasb Ambig/ND
No Coord <5u Elements)
3^ —
Struct = > 0.5p, > 5:1 Aspect Ratio Grid acceptance:
Positive diffraction pattern properties conforming to undissolved filler, overlapped or folded Totals
:10% particulate coverage >50% coverage ate
laboratory identification criteria observed
least 20 unfolded or overlapped grid squares <5% F B C M >5p
'/= 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_003468795
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000181686
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NYC-WTC_000181686Source: NYC Law Department, mirrored locally