NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet
Client Name: NYC BOE Volume (liters): 1920
Lab Group #: 6629 Filter Type / Filter Area: MCE 385 mm-
Lab Sample #: 4 Grid Opening Size: 0.01124
Client Sample #: 4 Area Examined: 0.04496 mm-
GRID BOX: Magnification: 20,000
GRID ID: Accelerating Voltage: too KeV
# Grid Openings: 4 Analysis Date: 2/11/02
Analysis Performed By:
MARK PEYSAKHOV
GO. Structure Structure Type Length ID of Structure N or N EDS
(Nonadb
No F B C >=05 |J >=5p Chrys Amphibole Nonasb Ambig/ND
No Coord <5m Elements)
Struct = > 0,5g .> 5:1 Aspect Ratio Grid accgptancs:
'I = Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals
laboratory identification criteria observed <10% particulate coverage >50% coverage ate
V= EDS spectrum conforming to laboratory
least 20 unfolded or overlapped grid squares <5% F bTc M >5p
holes or opaque areas
identification criteria observed Chrysotile
i 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-ldentified
Actinolite
NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC1OO_OO3467857
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000181010
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