GO. Structure Structure Type Length ID of Structure N or V EDS
(Nonadb
No F B C M ’=05 p >=5|J Chrys Amphibole Nonasb Ambig/ND
No ^oord Elements)
<5p
Struct = > 0.5p >5:1 Aspect Ratio Grid acceptance;
N Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Tot^
laboratory identification criteria observed <10% particulate coverage >50% coverage ate
least 20 unfolded or overlapped grid squares <5% F B C M >5p
•/= EDS spectrum conforming to laboratory holes or opaque areas
identification criteria observed Chrysotile
amphiboles Amphibole
E = Single Fiber Amosite
B = Bundle (<3 fibers <1 liber diameter apart Crocidolite
Ambiguous
C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos
Tremolite
M = Matrix
Actinolite Non-Identified
USD = No Structures Detected
CONFIDENTIAL, CITY_21MC100_003430553
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000175190
OCR can misread numbers and units. Confirm readings against the page image before using them.
NYC-WTC_000175190Source: 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 2, 2002.
Laboratory report documenting transmission electron microscopy analysis of an air sample collected from a New York City Board of Education site on February 2, 2002.
Laboratory report documenting transmission electron microscopy analysis of an air sample collected from a New York City Board of Education site on February 2, 2002.