TEM asbestos air sample results, NYC BOE, Nov 2001
Machine-extracted title · confidence 95%
Laboratory report documenting transmission electron microscopy analysis of an air sample for asbestos collected from NYC Board of Education facilities.
GO. Structure Structure Type Length ID of Structure N or 7 EDS
(Nonadb
No F B C M >=05 M i>=5(J Chrys Amphibole Nonasb Ambig/ND
No Coord Elements)
<5|J
_____ <2
I
i-
Struct = > 0.5g _> 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 >5p
EDS spectrum conforming to laboratory holes or opaque areas
identification criteria observed Chrysotile
I 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 Nou-Identified
Actinolite
NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC100_002743293
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000179120
OCR can misread numbers and units. Confirm readings against the page image before using them.
NYC-WTC_000179120Source: NYC Law Department, mirrored locally
Technical data sheet for the sixth transmission electron microscopy analysis of an air sample collected from a NYC Board of Education site in March 2002.