. GO, Structure Structure Type Length ID ot structure N or \ EDS
No >=05 M :>=5p Amphibole Nonasb (Nonedb
F B C Chrys Ambig/ND
) No i Coord <5u Elements)
zi
3^-—
I
__ _____ 1_______ L_J____
Struct = > O.Sg .>5:1 Aspect Ratio Grid acceptance:
t/= Positive diffraction pattern properties conforming to <50% undissolved niter, 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 confonning 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 Non-Identified
; Actinolite
NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC100_003470679
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000176661
OCR can misread numbers and units. Confirm readings against the page image before using them.
NYC-WTC_000176661Source: 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 27, 2002.
Laboratory report documenting transmission electron microscopy analysis of an air sample collected from a NYC Board of Education site on January 27, 2002.
Laboratory report documenting transmission electron microscopy analysis of an air sample collected from a NYC Board of Education site on January 27, 2002.