NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet
ClientNam^ NYC BOE Volume (liters): 1920
Lab Group #: 6928 Filter Type / Filter Area: MCE 385 mm-
Lab Sample #: 6 Grid Opening Size: 0.01124
Client Sample #: 06 Area Examined: 0.04496 mm-
GRID BOX: Magnification: 20,000
GRID ID: Accelerating Voltage: 100 KeV
# Grid Openings: 4 Analysis Date: 3/4/02
Analysis Performed By:
------ ROMAN PEYSAKHOV
GO, Structure Structure Type Length ID of structure Nor 2 EDS
No >=05|j ) ’(Noraitr
F B C M •=5|J Chrys Amphibole Nonasb Ambig/ND
No Coord <5u Elements)
7,
Struct = > l),5p > 5:1 Aspect Ratio Grid acceptance:
nf'= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals
laboratory identification criteria obsen/ed <10% particulate coverage >50% coverage ate
least 20 unfolded or overlapped grid squares <5% F B C j M >01J
\/= EDS spectrum conforming to laboratory holes or opaque 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 Non-Identified ‘
Actinolite
NSC = No Structures Detected
CONFIDENTIAL, CITY_21MC100_003468302
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000181307
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