TEM Asbestos air sample results, NYC BOE, Mar 2002
Machine-extracted title · confidence 95%
Laboratory report documenting transmission electron microscopy analysis of an air filter sample collected from a New York City Board of Education site.
GO. Structure Structure Type Length ID of Structure NorN EDS
(Nonadb
i No ! ■ Coord
No F B C >=05 p >=5fJ Chrys Amphibole Nonasb Ambig/ND
<Sp Elements)
------
Struct = > 0.5p 5:1 Aspect Ratio Grid acceptance;
'/= Positive diffraction pattern properties conforming to <50% undissolved filter, overiapped or folded Totals
laboratory identification criteria observed <10% particulate coverage >50% coverage ate
least 20 unfolded or overiapped grid squares <5% F B C M >5u
■/= 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) i Anthophyllite Non-Asbestos
Tremolite
M = Matrix Actinolite Non-Identified
NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC100_0 03470653
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000176644
OCR can misread numbers and units. Confirm readings against the page image before using them.
NYC-WTC_000176644Source: NYC Law Department, mirrored locally
Laboratory report documenting transmission electron microscopy analysis of an air sample collected from a New York City Board of Education site on April 4, 2002.
Technical data sheet for the tenth transmission electron microscopy analysis of an air sample collected from a NYC Board of Education site in March 2002.
Laboratory report documenting transmission electron microscopy analysis of an air sample collected from a New York City Board of Education site on April 4, 2002.
Laboratory report documenting transmission electron microscopy analysis of an air sample collected from a New York City Board of Education site on April 4, 2002.