TEM asbestos air sample results, NYC BOE, Apr 2002
Machine-extracted title · confidence 50%
Laboratory report documenting transmission electron microscopy analysis of air samples collected from NYC Board of Education facilities on April 27, 2002.
GO. Structure Structure Type Length ID of Structure N or 7 EDS
(Nonadb
No F B C >=05 p ; ■=5p Chrys Amphibole Nonasb Ambig/ND
No Coord <5m Elements) j
1 I
Struct = > 0.5p > 5:1 Aspect Ratio Gnd 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 B I C I .VI I >5u
9= EDS spectrum conforming to laboratory holes or opaque areas
Chrysotile
identification criteria observec
■AMPHIBOLES
1
Amphibole
F = Single Fiber Amosite
B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous
C = Cluster (>3 intersections) Anthophyllite Non-Asbestos~T
Tremolite
I 1
M = Matrix i Non-Identified
Actinolite
NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC100_003471298
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000177083
OCR can misread numbers and units. Confirm readings against the page image before using them.
NYC-WTC_000177083Source: NYC Law Department, mirrored locally