GO. structure Structure Type Length IDofStnjcture N or V EDS
No >=05 p (Nonadb
F B C M Chrys Amphibole Nonasb Ambig/ND
z) No Coord <5p Elements)
T—
Struct = >0.5p > 5.1 Aspect Ratio Grid acceptarice:
7 = Positive diffraction pattern properties conforming to undissolved filter, overlapped or folded Totals
laboratoiy identification criteria observed <10% particulate coverage >50% coverage ate
least 20 unfolded or overtapped grid squares <5% F B C M >5p
EDS spectrum conforming to laboratory holes or opaque areas
identification criteria observed Chrysotile
{ AMPHIBOLES I Amphibole
F = Single Fiber Amosite
B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous
C = Cluster (>3 Intersections) ! Anthophyllite j
Non-Asbestos
Tremolite
M = Matrix Non-Identified
Actinolite
NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC100_003388484
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000229914
OCR can misread numbers and units. Confirm readings against the page image before using them.
NYC-WTC_000229914Source: 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.