GO. Struclure Structure Type Length ID of Structure N or '/ EDS I
No >=05 p (Nonadb j
F B C M >=5p Chrys Amphibole Nonasb Ambig/ND
No Coord <5m Elements) !
TtS i/—
Struct = > 0.5g > 5:1 Aspect Ratio Grid acceptance:
N= 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 overlapped grid squares <5% f F B CIM >5|j
EDS spectrum conforming to laboratory holes or opaque areas
identification criteria observed Chrysotile
AMPHIBOLES Amphibole i
F = Single Fiber Amosite
B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous
C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos
M = Matnx
Tremolite I 1
Actinolite • Non-Identified
NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC100_003471065
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000176924
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NYC-WTC_000176924Source: NYC Law Department, mirrored locally