GO Structure Structure Type Length ID of Structure N or N EDS
No >=05 p (Nonadb
F B C M >=5p Chrys Amphibole Nonasb Ambig/ND
Elements)
No Coord <5p
0^1 -JJ—
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 obsen/ed <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 observed Chrysotile
AMPHIBOLES Amphibole
F = Single Fiber Amosite
B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous.
C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos
T remolite
M = Matrix Non-Identified
Actinolite
NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC100_0 03470529
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000176568
OCR can misread numbers and units. Confirm readings against the page image before using them.
NYC-WTC_000176568Source: 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.