GO. Structure Structure Type Length ID of Structure Norv EDS
(Nonadb
No F B C M >=05 p i>=5m Chrys Amphibole Nonasb Ambig/ND
No Coord <5m Elements)
zgg X
CT
Struct - > 0.5n >5:1 Aspect Ratio Grid acceptance:
Totals
laboratory identification criteria obsen/ed
least 20 unfolded or overlapped grid squares <5% F B C M >5m
A- EDS spectrum conforming to laboratory holes or opaque areas
identification criteria observed Chrysotile
AMPHIBOLES j 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 Actinolite Non-Identified
NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC100_003388453
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000229894
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NYC-WTC_000229894Source: 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 27, 2002.