TEM asbestos air sample results, NYC BOE, June 2002
Machine-extracted title · confidence 50%
Laboratory data sheet recording transmission electron microscopy analysis of an air sample collected from a NYC Board of Education site on June 19, 2002.
GO. Structure Structure Type Length ID of Structure N or v EDS
(Nonadb
No F B C M >=05 p >=5p Chrys Amphibole Nonasb Amoig/ND
_ /I No Coord <5p Elements)
'/Y MS
I
Struct = >0.5n >5:1 Aspect Ratio
n Grid acceptance:
'i= 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 >5m :
’/= EDS spectnjm conforming to laboratory holes or opaque areas
identification criteria observed Chrysotile
i AMPHIBOLES j Amphibole
F = Single Fiber Amosite
S = 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_003461678
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000179832
OCR can misread numbers and units. Confirm readings against the page image before using them.
NYC-WTC_000179832Source: NYC Law Department, mirrored locally
Laboratory data sheet recording transmission electron microscopy analysis of an air sample collected from a NYC Board of Education site on June 19, 2002.
Laboratory data sheet recording transmission electron microscopy analysis of an air sample collected from a NYC Board of Education site on June 20, 2002.
Laboratory data sheet recording transmission electron microscopy analysis of an air sample collected from a NYC Board of Education site on June 19, 2002.
Laboratory data sheet recording transmission electron microscopy analysis of an air sample collected from a NYC Board of Education site on June 19, 2002.