Technical data sheet recording transmission electron microscopy parameters and observations for the eleventh asbestos air sample analyzed on January 22, 2002.
GO, Structure Structure Type Length ID of Structure Norv EDS
No >=05 u (Nonadb
F B C M Chrys Amphibole Nonasb Ambig/ND
No Coord <5(J Elements)
a -Y" c
Struct = > 0.5n -> 5:1 Aspect Ratio Grid acceptance:
a/= 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
n/= EDS spectrum conforming to laboratory
C M >5u
holes or opaque areas
identification criteria observed Chrysotile
AMPHIBOLES Amphibole
F = Single Fiber Amosite
E = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous
C = Cluster (>3 Intersections) Anthophyllite I Non-Asbestos
Tremolite
M = Matrix I Non-ldentified
Actinolite
NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC100_003433526
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000175813
OCR can misread numbers and units. Confirm readings against the page image before using them.
NYC-WTC_000175813Source: NYC Law Department, mirrored locally
Laboratory report documenting transmission electron microscopy analysis of an air sample collected from a NYC Board of Education site on January 26, 2002.
Laboratory report documenting transmission electron microscopy analysis of an air sample collected from a NYC Board of Education site on January 26, 2002.
Laboratory report documenting transmission electron microscopy analysis of an air sample collected from a NYC Board of Education site on January 26, 2002.