GO. Structure Structure Type Length ID of Structure N or 7 EDS
(Nonadb
No F B C M >=05 p :>=5p Chrys Amphibole Nonasb Ambig/ND
No Coord <5p Elements)
Struct = > 0.5 p > 5.1 Aspect Ratio Grid acceptance:
7= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals
<10% particulate coverage >50% coverage ate
laboratory identification criteria observed
least 20 unfolded or overlapped grid squares <5% F B C M >5p
7= EDS spectrum conforming to laboratory holes or opaque areas
identification criteria obsen/ed Chrysotile
AMPHIBOLES Amphibole
F = Single Fiber Amosite
B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous
C = Cluster (’3 Intersections) Anthophyllite Non-Asbestos
Tremolite
M = Matrix Non-Identified
Actinolite
NED = No Structures Detected .. . _L.. 1
CONFIDENTIAL, CITY_21MC1OO_OO3468767
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000181650
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NYC-WTC_000181650Source: NYC Law Department, mirrored locally