NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet
Client Name: NYC BOE Volume (liters): 1920
Lab Group #: 6787 Filter Type / Filter Area: MCE 385 mm"
Lab Sample #: 3 Grid Opening Size: 0.01124
Client Sample #: 3 Area Examined: 0.04496 mm"
GRID BOX: Magnification: 20,000
GRID ID: Accelerating Voltage: 100 KeV
# Grid Openings: 4 Analysis Date: 2/23/02
Analysis Performed By:
MARK PEYSAKHOV
GO. Structure Structure Type Length ID of Structure N or N EDS
(Nonadb
No F B C >=05 (J >=51J Chrys Amphibole Nonasb Ambig/ND
No Coord <5p Elements)
4
Struct = > 0.5(1 >5:1 Aspect Ratio Grid acceptance: .
</= 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 I >5p
V= EDS spectrum conforming to laboratory holes or opaque areas
identification criteria observed Chrysotile
AMPHIBOLES Amphibole
F = Single Fiber Amosite
6 = 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_003468099
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000181181
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