GO, Structure Structure Type Length ID of Structure N or 7 EDS !
No (Nonadb i
F B C M >=05 pi Chrys Amphibole Nonasb Ambig/ND
Elements') I
_ , No Coorci <5y
zF HSz /z
Struct = > 0.5p >5:1 Aspect Ratio Grid acceptance:
V= Positive diffraction pattern properties conforming to ^^0% undissolved filter, overlapped or folded Totals
laboratory identification criteria observed 10% partculate coverage >50% coverage ate
least 20 unfolded or overlapped grid squares <5% F B C M >5u
^= EDS spectrum conforming to laboratory holes or opaque areas
identification criteria observed Chrysotile
AMPHIBOLES Amphibole
F = Single Fiber Amosite
B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous
C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos
T remolite
IVI = Matrix Non-Identified
Actinolite
NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC100_003467996
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000181112
OCR can misread numbers and units. Confirm readings against the page image before using them.
NYC-WTC_000181112Source: NYC Law Department, mirrored locally
Laboratory report documenting transmission electron microscopy analysis of air samples collected from NYC Board of Education facilities on February 4, 2002.