TEM Asbestos air sample results, NYC BOE, Apr 2002
Machine-extracted title · confidence 95%
Laboratory report documenting transmission electron microscopy analysis of an air sample collected from NYC Board of Education facilities on April 29, 2002.
Analysis Performed By:
ROMAN PEYSAKHOV
r
GO, Structure Structure Type Length ID of Structure NorN EDS i
No (Nonadb
F B C M >=05 0 >=5m Chrys Amphibole Nonasb Ambig/ND
Elements) )
^1 No Coord <5m
1/
//
Struct = > 0.5p >5:1 A.spect Ratio Grid acceptance:
7 = 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 F B C M i >5m
EDS spectrum conforming to laboratory holes or opaque areas L
identification criteria obsen/eo Chrysotile
AMPHIBOLES Amphibole
r = Single Fiber Amosite
B = Bundle (<3 libers <1 fiber diameter apart Crocidolite Ambiguous
C = Cluster i>3 Intersecrionsi Anthophyllite Non-Asbestos
Tremolite
M = Matrix Non-Identified I
Actinolite
NSD = No Structures Detected . 1
CONFIDENTIAL, CITY_21MC100_003471365
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000177131
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NYC-WTC_000177131Source: NYC Law Department, mirrored locally