GO. Structure Structure Type Length ID of Structure NorY/ EDS
No >=05 u T~^>=5p (Nonadb
F B C M Chrys Amphibole Nonasb Ambig/ND
Nd Coord <5p Elements)
4- <<- ci-
Struct = > 0.5p >5:1 Aspect Ratio Grid acceptance;
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 >5p
EDS spectrum conforming to laboraio^ 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_003459026
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000179361
OCR can misread numbers and units. Confirm readings against the page image before using them.
NYC-WTC_000179361Source: NYC Law Department, mirrored locally
Technical data sheet for the sixth transmission electron microscopy analysis of an air sample collected from a NYC Board of Education site in March 2002.