Structure _ _ Structure Type Length ID of Structure N or 7 EDS
No (Nonadb
F B C M >=05 p >=5iJ Chrys Amphibole Nonasb Ambig/ND
Elements)
No Coord <5|J
5"r f
/f
Struct = > 0.5|i > 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 gnd squares <5% T F B C M >5|j
7= EDS spectrum conforming to laboratory holes or opaque areas t
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
Actinolite Non-Identified
NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC100_003468704
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000181605
OCR can misread numbers and units. Confirm readings against the page image before using them.
NYC-WTC_000181605Source: NYC Law Department, mirrored locally
Laboratory report documenting transmission electron microscopy analysis of air samples collected from NYC Board of Education facilities on February 3, 2002.