GO. Structure Structure Type Length ID of Structure NorV EDS
No (Nonadb
F B C M >=05 M : '=5iJ Chrys AmphitMle Nonasb Ambig/ND
No Coord <5m Elements) i
z
■------ 2
Struct = > 0.5g > 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 spectnjm 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 5 Non-Identified
Actinolite
NSD = No Structures Delected
CONFIDENTIAL, CITY_21MC100_003471449
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000177191
OCR can misread numbers and units. Confirm readings against the page image before using them.
NYC-WTC_000177191Source: NYC Law Department, mirrored locally
Laboratory report documenting transmission electron microscopy analysis of air samples collected from NYC Board of Education facilities on February 2, 2002.