GO. Structure Structure Type Length ID of Structure NorV EDS
(Nonadb
xh No p B C M >=05 p >=5p Chrys Amphibole Nonasb Ambig/ND
Elements)
I / l No Coord , <5|J
J
7
=
Struct = > 0.5(1 .> 5:1 Aspect Ratio Grid acceptance:
A- 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 B C M >5u
'\^= 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_003467073
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000180490
OCR can misread numbers and units. Confirm readings against the page image before using them.
NYC-WTC_000180490Source: NYC Law Department, mirrored locally
Laboratory report documenting transmission electron microscopy analysis of an air sample collected from a New York City Board of Education site on February 1, 2002.