NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet
Client Name: NYC BOE Volume (liters): 1920
Lab Group #: 6986 Filter Type / Filter Area: MCE 385 mm-
Lab Sample #: •7- Grid Opening Size: 0.01124
Client Sample #: 02 Area Examined: 0.04496 mm-
GRID BOX: Magnification: 20,000
GRID ID: Accelerating Voltage: 100 KeV
# Grid Openings: 4 Analysis Date: 3/8/02
Analysis Performed By:
MARK PEYSAKHOV
GO. Structure Structure Type Length ID of structure N or v EOS
(Nonado
No F B C M >=05 p >=5p Chrys Amphibole Nonasb Ambig/ND
No Coord ■sSp Elements!
- -
" 3
Struct = > (J.5p >5:1 Aspect Ratio Grid acceptance;
3- Positive diffraction pattern properties conforming Io <50% undissolved filter, overlapped or folded Totals
laooratory identification criteria observed <10% particulate coverage >50% coverage ate
least 20 unfolded or overlapped grid squares <5% F B C M >5u
V= EDS spectrum conlomiing to laboratory boles or opaque areas
identification criteria observed Cbrysotile
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-Ideiitified
Actinolite
NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC100_003468380
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000181361
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