GO. Structure Structure Type Length ID of Structure NotY EDS
No Nonasb (Nonadb
F B C M >=05 p >=5|J Chrys Amphibole Ambig/ND
No Coord Elements)
///
-4—
Struct = > 0.5 p > 5:1 Aspect Ratio Grid acceptance:
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 >5m
v'= 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_003470365
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000176461
OCR can misread numbers and units. Confirm readings against the page image before using them.
NYC-WTC_000176461Source: NYC Law Department, mirrored locally
Laboratory report documenting transmission electron microscopy analysis of an air sample collected from a NYC Board of Education site on January 26, 2002.
Laboratory report documenting transmission electron microscopy analysis of an air filter sample collected from a New York City Board of Education site.
Record containing transmission electron microscopy findings for an asbestos air sample collected from a New York City Board of Education location in March 2002.
Laboratory report documenting transmission electron microscopy analysis of an air sample collected from a NYC Board of Education site on January 26, 2002.
Laboratory report documenting transmission electron microscopy analysis of an air sample collected from a NYC Board of Education site on January 26, 2002.