GO. Structure Structure Type Length ID of Structure N or EDS
No >=05 M (Nonadb
F B C M >=5m Chrys Amphibole Nonasb Ambig/ND
No ' .Coord <5m Elements)
■
1 L
Struct = > 0.5(1 _> 5:1 Aspect Ratio Grid acceptance:
a/= Fosive diffraction pattern properties conforming to *50% undissolved filter, overiapped orfolded Totals
laboratory identification criteria observed <10% particulate coverage >50% coverage ate
least 20 unfolded or overlapped grid squares <5% F B C M >5p !
•V= EDS spectrum conforming to laboratory holes or opaque areas
identification criteria observed Chrysotile
AMPHIBOLES Amphibole
F = Single Fiber Amosite
B = Bundle (<3 libers <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_003470429
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000176501
OCR can misread numbers and units. Confirm readings against the page image before using them.
NYC-WTC_000176501Source: 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.
Document recording transmission electron microscopy analysis data for an asbestos air sample from a New York City Board of Education site in March 2002.
Document recording transmission electron microscopy analysis data for an asbestos air sample from a New York City Board of Education site in March 2002.