NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet
Client Name: NYC BOE Volume (liters): 1920
Lab Group #: 7148 Filter Type / Filter Area: MCE 385 mm-
Lab Sample #: 8 Grid Opening Size: 0.01124
Client Sample #: 08 Area Examined: 0.04496 mm^
GRID BOX: Magnification: 20,000
GRID ID : Accelerating Voltage: 100 KeV
# Grid Openings: 4 Analysis Date: 3/20/02
Analysis Performed By:
ROMAN PEYSAKHOV
GO. Structure Structure Type Length ID of Structure NorN EDS
(Nonadb
No F B C M >=05 p >=5)j Chrys Amphibole Nonasb Ambig/ND
No Coord <5p Elements)
//
fl
Ihl----- -
Struct = > O.Sg > 5.1 Aspect Ratio Grid acceptance:
4= Positive diffraction pattern properties conforming to
<50% undissolved filter, overlapped or folded Totals
<10% particulate coverage >50% coverage ate
laboratory identification criteria observed
least 20 unfolded or overlapped grid squares <5% F B C M >5u
V= EDS spectrum conforming to laboratory holes or opaque areas
identification criteria observed Chrysotile
AMPHIBOLES j Amphibole
F = Single Fiber Amosite I
B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite I Ambiguous
C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos
I Tremolite
M = Matrix • Actinolite Non-Identified
NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC100_011533407
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000181566
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