TEM Asbestos air sample results, NYC BOE, Apr 2002
Machine-extracted title · confidence 95%
Laboratory report documenting transmission electron microscopy analysis of an air sample collected from NYC Board of Education facilities on April 30, 2002.
GO. Structure Structure Type Length ID of Structure Norv EDS j
No (Nonadb ;
F B C M >=5pi Chrys Amphibole Nonasb Ambig/ND
No Coord <5p Elements)
^<3
Struct = > 0.5u >5:1 Aspect Ratio Grid acceptance:
V= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals
laboratory identification criteria observed <10% partcuiate coverage >50% coverage ate
7= EDS spectrum conforming Io laboratory
least 20 unfolded or overlapped grid squares <5% fTb C ] M I >5u
holes or opaque areas
identification criteria observed Chrysotile r~ V I
AMPHIBOLES Amphibole
F = Single Fiber Amosite
B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite
Ambiguous i
C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos
Tremolite
M = Matrix Non-Identified
Actinolite
NSC = No Structures Detected
CONFIDENTIAL, CITY_21MC1OO_OO3471383
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000177145
OCR can misread numbers and units. Confirm readings against the page image before using them.
NYC-WTC_000177145Source: 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 documenting transmission electron microscopy analysis of an air sample collected from a NYC Board of Education site on January 26, 2002.