GO. Structure Structure Type Length ID of Structure N or v EDS
No >=05 u :>=5p (Nonadb
F B C M Chrys Amphibole Nonasb Ambig/ND
Elements)
No Coord <5m
! PV
z
Struct = > 0.5n .> 5:1 Aspect Ratio Grid acceptance:
A-. Positive diffraction pattern properties conforming to <50% undissolved filter, overtaxed or folded Totals
laboratory identification criteria observed <10% patPoulate coverage >50% coverage ate
least 20 unfolded or overlapped grid squares <5% F B C M >5p
'J- 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
Tremolite
M = Matrix Non-Identified
Actinolite
NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC100_003470565
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000176593
OCR can misread numbers and units. Confirm readings against the page image before using them.
NYC-WTC_000176593Source: 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.