GO. Structure Structure Type Length ID of Structure N or 7 EDS
(NonatJb
No F B C M >=05 M :>=5|J Chrys Amphibole Nonasb Ambig/ND
No Coord <5p Elements)
_JZ__
7 0 //
Struct = > 0.5(j > 5:1 Aspect Ratio Grid acceptance;
4= 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 >5y
yl- EDS spectrum conforming to laboratory
C M
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_21MC1OO_OO3468337
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000181330
OCR can misread numbers and units. Confirm readings against the page image before using them.
NYC-WTC_000181330Source: 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.
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.
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.