NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet
Client Name: NYC BOE Volume (liters): 1800
Lab Group #: 7717 Filter Type / Filter Area: MCE 385 mm^
Lab Sample #: 7 Grid Opening Size: 0.01124
Client Sample #: 10 Area Examined: 0.04496 mm^
GRID BOX: Magnification: 20,000
GRID ID: Accelerating Voltage: 100 KeV
# Grid Openings: Analysis Date: 5/11/02
Analysis Performed By:
ROMAN PEYSAKFIOV
GO. structure Structure Type Length ID of Structure NorN EDS
(Nonadb
No F B C M >=05 M >-5h Chiy^ Amphibole Nonasb Ambig/ND
No Coord <5(J Elements)
77^
(/
ZSZZ
t-
Struct = >0.5u >5:1 Aspect Ratio Grid acceptance:
•/= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals
<10% particulate coverage >50% coverage ate
laooratory identification criteria observed
least 20 unfolded or overlapped grid squares <5% F B C M i >5(J
7= EDS spectrum conforming to laboratory holes or opacue areas
identification 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
Actinolite Non-Identified
NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC1OO_OO346O736
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000179649
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