GO. Structure Structure Type Length ID of Structure N or EDS
No >=05 M Amphibole Nonasb Ambig/ND
(Nonadb
F B C M >=5p Chrys
No Coord <5p Elements)
J
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 >5U
•/= EDS spectrum conforming to laboratory holes or opaque areas
identification criteria observed Chrysotile
I AMPHIBOLES Amphibole
F = Single Fiber Amosite
B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite ! Ambiguous
i Anthophyllite j Non-Asbestos
C = Cluster (>3 Intersections)
Tremolite
M = Matrix Non-Identified
Actinolite
NSD = No Structures Delected
CONFIDENTIAL, CITY_21MC100_003461818
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000179929
OCR can misread numbers and units. Confirm readings against the page image before using them.
NYC-WTC_000179929Source: NYC Law Department, mirrored locally
Laboratory data sheet recording transmission electron microscopy analysis of an air sample collected from a NYC Board of Education site on June 19, 2002.
Laboratory data sheet recording transmission electron microscopy analysis of an air sample collected from a NYC Board of Education site on June 19, 2002.
Laboratory data sheet recording transmission electron microscopy analysis of an air sample collected from a NYC Board of Education site on June 19, 2002.