GO. Structure Structure Type Length ID of Structure Nor/ EDS
No >=05 p (Nonadb
F B C M >=5jj Chrys Amphibole Nonasb Ambig/ND
No Coord <5u Elements)
J?
Struct = > O.ppi >5:1 Aspect Ratio Grid acceptance:
v= Positive diffraction pattern progenies conforming to 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 >5p
EDS spectrum conforming to laboratory holes or opaque areas
identification criteria observeo Chrysotile
AMPHIBOLES Amphibole
F = Single Fiber Amosite
B = Bundle (<3 fibers <1 fiber diameter apan Crocidolite Ambiguous
C = Cluster (>3 Iniersections) Anthophyllite Non-Asbestos
M = Matrix Tremolite
Actinolite Non-ldentified
NSD = No Structures Detected
CONFIDENTIAL, CITY_2 IMCl 0 Ci_0 01902304
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000178525
OCR can misread numbers and units. Confirm readings against the page image before using them.
NYC-WTC_000178525Source: 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 sample collected from NYC Board of Education facilities on April 30, 2002.
Laboratory report documenting transmission electron microscopy analysis of an air sample collected from a NYC Board of Education site on January 26, 2002.