GO. Structure Structure Type Length ID of Stnjcture N or V EDS
No [Nonadb
F B C M >=05 p >=5m Chrys Amphibole Nonasb Ambig/ND
No Coord <5p Elements)
Struct = > 0.5p > 5:1 Aspect Ratio Grid acceptance:
^1= Positive diffraction pattern properties conforming to <50% undissolved filler, overlapped or folded Totals
laboratory identification criteria observed <10% particulate coverage >50% coverage ale
least 20 unfolded or overiapped grid squares <5% F B C M >5p
'I- EDS spectrum conforming to laboratory holes or opaque areas
identification criteria observed Chrysotile
[ AMPHIBOLES ! Amphibole
F = Single Fiber i Amosite
B = Bundle {<3 fibers <1 fiber diameter apart Crocidolite Ambiguous
C = Cluster (>3 Intersections) Anthophyllite ' Non-Asbestos
Tremolite i
M = Matrix Actinolite Non-Identified
NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC100_003461701
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000179849
OCR can misread numbers and units. Confirm readings against the page image before using them.
NYC-WTC_000179849Source: 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 January 31, 2002.
Laboratory data sheet documenting transmission electron microscopy analysis of an asbestos air sample collected from a New York City Board of Education site.
Laboratory report documenting transmission electron microscopy analysis of an air sample collected from a New York City Board of Education site on January 31, 2002.
Laboratory report documenting transmission electron microscopy analysis of an air sample collected from a New York City Board of Education site on January 31, 2002.