GO. Structure Structure Type Length IDofStrijcture NorV EDS
(Nonadb
No F B C M >=05 u >=5|j Chrys Amphibaie Nonasb Ambig/ND
No Coord Elements)
£ 2
J 2
Siruct = > 0,5p >5:1 Aspect Ratio Grid acceptance:
T= Positive diffraction pattern properties conforming to <50% undissoived filter, overlapped or folded T'otaLs
laboratory identification criteria observed <10% particulate coverage >50% coverage ale
least 20 unfolded or overlapped grid squares <5% F B C M >5U
y = EDS 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-Asbestos
Tremolite
M = Matrix Non-Identified
Actinolite
NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC100_003430558
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000175195
OCR can misread numbers and units. Confirm readings against the page image before using them.
NYC-WTC_000175195Source: NYC Law Department, mirrored locally
Laboratory report documenting transmission electron microscopy analysis of air samples collected from NYC Board of Education facilities on January 27, 2002.