GO. Structure Structure Type Length ID of Structure Norv EDS
No >=05 p Amphibole Nonasb (Nonadb
F B C >=5p Chrys Ambig/ND
Elements)
No <5p
r ____
u—
Struct = > 0.5g > 5:1 Aspect Ratio Grid acceptance:
v/= Positive diffraction pattern properties conforming to <50% undissolved filter, overiapped or folded
Totals
laboratory identification criteria observed <10% particulate coverage >50% coverage ale
least 20 unfolded or overlapped gnd 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
C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos
Tremolite
M = Matrix Actinolite Non-Identified
NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC100_003467612
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000180835
OCR can misread numbers and units. Confirm readings against the page image before using them.
NYC-WTC_000180835Source: NYC Law Department, mirrored locally
Laboratory report documenting transmission electron microscopy analysis of air samples collected from NYC Board of Education facilities on February 3, 2002.
Laboratory report documenting transmission electron microscopy analysis of air samples collected from NYC Board of Education facilities on February 3, 2002.
Laboratory report documenting transmission electron microscopy analysis of air samples collected from NYC Board of Education facilities on February 3, 2002.