GO. Structure Structure Type Length ID of Structure N or s' EDS
(Nonadb
No F B C M >=05 (J :>=5|J Chrys Amphibole Nonasb Ambig/ND
No Coord <5p Elements)
a
Struct = > 0.5p .>5:1 Aspect Ratio Grid acceptance:
V= 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 ovehapped grid sciares <5% F B C M >5p
EQS 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-Asbesto.s
Tremolite
M = Matrix Non-ldentified
Actinolite
NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC100_003467969
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000181095
OCR can misread numbers and units. Confirm readings against the page image before using them.
NYC-WTC_000181095Source: NYC Law Department, mirrored locally
Laboratory report documenting transmission electron microscopy analysis of air samples collected from NYC Board of Education facilities on January 28, 2002.