GO. Structure Structure Type Length ID of Structure N or 'Z EDS
(Nonadb
No F B C M >=05 p :>=5p Chrys Amphibole Nonasb Ambig/ND
_ No Coord <5p Elements)
<7 V? OK
Struct > 0.5(j >5:1 Aspect Ratio Grill acceptance:
’/= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or lolded Totals
laboratory identification criteria observed <10% paniculate 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
identifiration criteria observed Chrysotile
AMPHIBOLES Amphibole
I- = Single Fiber Amosite
8 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous
0 = Cluster (>3 intersections) Anthophyllite Non-Asbestos
Tremolite
M = Matrix Non-Identified
Actinolite
MSD = No Structures Delected
CITY_21MC100_002852527
NYC-WTC_000212885
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NYC-WTC_000212885Source: NYC Law Department, mirrored locally
Laboratory report documenting transmission electron microscopy analysis of air samples collected from NYC Board of Education facilities in late March 2002.