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.
i GO. Structure Structure Type Length ID of Structure NorN EDS
(Nonadb
No F B C M >=05 M >=5(j Chrys Amphibole Nonasb Ambig/ND
I No I Coord <5|J Elemente)
Struct = > 0.5p ,> 5;1 Aspect Ratio Grid acceptance:
Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or foWed Totals
laboratory identification criteria observed <10% particulate coverage >50% coverage ate
least 20 unfolded or overlapped grid squares <5% F B C M >5p
7= EDS spectrum conforming to laboratory holes or opaque areas
identification criteria obsenred Chrysotile
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 Non-Identified
Actinolite
NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC100_002743299
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000179126
OCR can misread numbers and units. Confirm readings against the page image before using them.
NYC-WTC_000179126Source: NYC Law Department, mirrored locally