GO. Structure Structure Type Length ID of Structure NofN EDS
No (Nonadb
F B C M >=05 M >=5|j Chrys Amphibole Nonasb Ambig/ND
No: Coord <5p Elements)
5^
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 observed <10% particulate coverage >50% coverage ate
least 20 unfolded or overtapped grid squares <5% F B C M >5u
'/= EDS spectrum conforming to laboratory holes or opaque areas
identification criteria observed Chrysotile
j AMPHIBOLY Amphibole
F = Single Fiber Amosite
B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous
C = Cluster (>3 Intersections) i Anthophyllite Non-Asbestos
I Tremolite
M = Matrix I Actinolite Non-ldentified
NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC100_003466845
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000180344
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NYC-WTC_000180344Source: NYC Law Department, mirrored locally