NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet
Client Name: NYC BOE Volume (liters): 1944
Lab Group #: 5849 Filter Type / Filter Area: MCE 385 mm^
Lab Sample #: 5 Grid Opening Size: 0.01124
Client Sample #: 5 Area Examined: 0.04496
GRID BOX: Magnification: 20,000
GRIP ID: Accelerating Voltage: 100 KeV
# Grid Openings: 4 Analysis Date; 11/8/01
Analysis Performed By:
MARK PEYSAKHOV
GO. Structure Structure Type Length ID of Structure NorN EDS
(Nonadb
No F B C M >=05 u >=5p Chrys Amphibole Nonasb Ambig/ND
No I Coord Elements)
<5m
I—r
i—
)i
I !
Struct = > 0.5p _> 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% particulate coverage >50% coverage ate
\'= EDS spectrum conforming to laboratory
least 20 unfolded or overlapped grid squares <5% F B c M >5tJ
holes or opaque areas
identifioation criteria observed Chrysotile
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-Identified
Actinolite
NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC100_002743297
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000179124
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