GO. Structure Structure Type Length ID of Structure Norv EDS
No (Nonadb
F B C M >=05 M >=5p . Chrys Amphibole Nonasb Ambig/ND
No Coord <5p Elements)
3. . ■
Struct = > 0.5p >5:1 Aspect Ratio Grid acceptance:
Positive diffraction pattern property conforming to ^50% Tot^
laboratory identification criteria observed
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
Tremolite
M = Matrix Non-Identifierl
Actinolite
NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC1OO_OO34338O4
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000175957
OCR can misread numbers and units. Confirm readings against the page image before using them.
NYC-WTC_000175957Source: NYC Law Department, mirrored locally
Document recording transmission electron microscopy analysis data for an asbestos air sample from a New York City Board of Education site in March 2002.