Laboratory report documenting transmission electron microscopy analysis of an air sample collected at the World Trade Center Board of Education facility.
GO. 1 Structure Structure Type Length 10 of Structure N or 7 EDS 1
(Nonadb
Nq F B C >=05 p ' -5p Chrys Amphibole Nonasb Ambig/ND
No Coora <5p Elements)
/
I
Struct = > 0.5p > ;;l Aspect Ratto Grid acceptance:
4= Positive diffraction pattern properties conforming to <=50% undissolved filter, overtappea ar folded Totals
laooratory identification criteria observed
\i'= EDS spectrum conforming to laboratory
Identification criteria observed
<10% particulate coverage >50% coverage ate
least 20 untoided or overlapped grid squares <5%
holes or opaque areas ____ n
Chrysotile
B C M >5m
AMPHIBOLES Amphibole
F = Single Fiber Amosite
S = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous
C = Cluster (>3 intersections) Anthophyllite Non-Asbestos
T remolite
M = Matrix 1 Non-Ideutified
Actinolite
NSD = Nc Structures Detected
CITY_21MC100_003104998
NYC-WTC_000184355
OCR can misread numbers and units. Confirm readings against the page image before using them.
NYC-WTC_000184355Source: NYC Law Department, mirrored locally
Laboratory data sheet recording transmission electron microscopy analysis of an air sample collected from a Board of Education site on November 15, 2001.