GO. Structure Structure Type Length ID of Structure N or 0 EDS
No (Nonadb
F B C M >=05 p Chrys Amphibole Nonasb Ambig/ND
No' Coord <5m Elements)
Struci = > 0.5|j .>5:1 .Aspect Ratio Grid acceptance:
-/= Positive diffraction pattern propefe conforming to ^50% undissolved biter, 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 >5p
v= EDS spectrum conforming to laboratory holes or opaque areas
identifcation criteria observed Chrysotile
I AMPHIBOLES i ■Amphibole
F = Single Fiber I Amosite
B = Bundle (<3 fibers <1 fiber diameter apart I Crocidolite Ambiguous
I Anthophyllite
C = Cluster (>3 Intersections) Non-Asbestos
M = Matrix
1 Tremolite
Actinolite Non-Identified
NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC100_003388761
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000230115
OCR can misread numbers and units. Confirm readings against the page image before using them.
NYC-WTC_000230115Source: 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 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.