GO. Structure Structure Type Length ID of Structure N or '/ EDS
No (Nonadb
F B C M >=05 M Chrys Amphibote Nonasb Ambig/ND
No I Coord <5m Elements)
_ z:-
P-
Struct = > 0.5n _> S; 1 Aspect Ratio Grib acceptance:
Positive diffraction pattern ptopeilies conforming to <50% unbissolved filter, overlapped or folded Totals
labotatory identification criteria observed <10% particulate coverage >50% coverage ate
least 20 unfolded or overlapped grid squares <5% F B C M
'J: EDS spectrum conforming to labotatory holes or opaque areas
identificatton criteria observed Chrysotile
i AMPHIBOLES Amphibole
F = Single Fiber Amosite
I Ambiguous
B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite
; Anthophyllite Non-Asbestos
C = Cluster (>3 Intersections)
Tremolite
I
M = Matrix Non-Idcntified
N50 = No Structures Detected
Actinolite 1...
CITY_21MC100_002878418
NYC-WTC_000218428
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NYC-WTC_000218428Source: NYC Law Department, mirrored locally
Laboratory report documenting transmission electron microscopy analysis of an air sample collected from a New York City Board of Education site in June 2002.