GO, Structure Structure Type Length ID of Structure N or v . EDS
No (Nor.adb
F B C M -5p Chrys Amphibole Nonasb Ambig/ND
No Coord <5p Elements)
3
Struct = >0.5n >5:1 Aspect Ratio Grid acceptance:
vG 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 C M i >5o
>/= EDS spectrum conforming to laboratory holes or opaque areas
identification criteria observed
AMPHIBOLES
Chrysotile —i—
Amphibole
F = Single Fiber Amosite
B = Bundle !<3 fibers <1 fiber diameter apart Crocidolite Ambiguous
C = Cluster (>3 Intersections) Anthophyllite Noil-Asbestos
Tremolite
M = Matrix Non-Identified
Actinolite
NSD = No Structures DetecterJ
CONFIDENTIAL, CITY_21MC1OO_OO3468O83
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000181172
OCR can misread numbers and units. Confirm readings against the page image before using them.
NYC-WTC_000181172Source: NYC Law Department, mirrored locally
Laboratory report documenting transmission electron microscopy analysis of air samples collected from NYC Board of Education facilities on February 3, 2002.