GO. Structure Structure Type Length ID of Structure N or V EDS
No (Nonadb
F B C M >=05 p >=5p Chrys Amphibole Nonasb Ambig/ND
/ / No , Coord <5p Elements)
Struct = > 0.5p > 5:1 Aspect Ratio Grid acceptance;
t/= 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 laboratory holes or opaque areas
identification criteria observed Chrysotile
; AMPHIBOLES | Amphibole
F = Single Fiber Amosite
8 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous
C = Cluster (>3 Intersections) Anthophyllite ' Non-Asbestos
Tremolite i
M = Matrix Non-Identified
Actinolite i
USD = No Structures Detected
CONFIDENTIAL, CITY_21MC100_003470672
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000176655
OCR can misread numbers and units. Confirm readings against the page image before using them.
NYC-WTC_000176655Source: NYC Law Department, mirrored locally
Technical record showing transmission electron microscopy analysis data for an asbestos air sample collected from a New York City Board of Education site.