TEM asbestos air sample results, NYC BOE, Feb 2002
Machine-extracted title · confidence 50%
Laboratory report documenting transmission electron microscopy analysis of air samples collected from NYC Board of Education facilities on February 3, 2002.
GO. Structure Structure Type Length ID of Structure N or EDS
No {Nonadb
F B C M >=05 u >=5(1 Chrys Amphibole Nonasb Ambig/ND
No Coord <5u Elements)
///
if
its n
Struct = > 0.5p >5:1 Aspect Ratio Grid acceptance:
'J= 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 >5u
■/= EDS spectrum conforming to laboratory holes or opaque areas
identification criteria obsenred Chrysotile
' AMPHIBOLES Amphibole
F = Single Fiber i Amosite
B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous
C = Cluster (>3 intersections) Anthophyllite Non-Asbestos
Tremolite
M = Matrix N on-Identified
Actinolite
NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC100_003467697
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000180898
OCR can misread numbers and units. Confirm readings against the page image before using them.
NYC-WTC_000180898Source: NYC Law Department, mirrored locally
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.
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.
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.