TEM asbestos air sample results, NYC BOE, Nov 2001
Machine-extracted title · confidence 95%
Laboratory report documenting transmission electron microscopy analysis of an air sample for asbestos collected from NYC Board of Education facilities.
Structure structure Type Length ID of Structure N or V EDS
(Nonadb
No F B C M >=05 (J >=5(j Chrys Amphitxjie Nonasb Ambig/ND
No) Coord Elements)
<5p
M
j------1
Struct = > 0.5p >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 M >5p
'/= EDS spectrum conforming to laboratory holes or opaque areas
identification criteria observed Chrysotile
I AMPHIBOLES Amphibole
F = Single Fiber Amosite
B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous
C = Cluster (>3 Intersections) 1 Anthophyllite Non-Asbestos
i Tremolite
M = Matrix Non-Identified
Actinolite
NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC100_002743311
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000179137
OCR can misread numbers and units. Confirm readings against the page image before using them.
NYC-WTC_000179137Source: NYC Law Department, mirrored locally
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.