GO. Structure Structure Type Length ID of Structure N or EDS
No >=05 M Amphibole Nonasb (Nonadb
F B C >=5p Chrys Ambig/ND
No Coord <5m Elements)
2:
_J______________________
I i rT~
Struct = > 0.5p .> 5; 1 Aspect Ratio Grid acceptance:
'1= 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 >5|J
■/= 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-Identified
Actinolite
NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC100_0 03471657
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000177230
OCR can misread numbers and units. Confirm readings against the page image before using them.
NYC-WTC_000177230Source: NYC Law Department, mirrored locally
Laboratory report documenting transmission electron microscopy analysis of an air sample collected from a NYC Board of Education site on January 26, 2002.
Laboratory report documenting transmission electron microscopy analysis of an air sample collected from a NYC Board of Education site on January 26, 2002.
Laboratory report containing transmission electron microscopy findings for an asbestos air sample collected from a New York City Board of Education location.
Laboratory report documenting transmission electron microscopy analysis of an air sample collected from a NYC Board of Education site on January 26, 2002.