GO. Structure Structure Type Length ID of Structure N or 7 EDS
(Nonadb
No F B C -5p Chrys Amphibole Nonasb Ambig/ND
Elements) |
No Coord <5m
®'g 2^
If
it
4__
Stiuct = > 0.5g >5:1 Aspect 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% J" I B C j M I >5m
7= EDS spectrum conforming 10 laboratory holes or opaque areas
identification criteria observed Chrysotile
A.MPHIBOLES 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_003470975
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000176861
OCR can misread numbers and units. Confirm readings against the page image before using them.
NYC-WTC_000176861Source: NYC Law Department, mirrored locally
Laboratory report documenting transmission electron microscopy analysis of an air sample collected from NYC Board of Education facilities on April 30, 2002.