NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet
Client Name: NYC BOE Volnme (liters): 1960
Lab Group #: 7204 Filter Type / Filter Area: MCE 385 mm-
Lab Sample #: 16 Grid Opening Size: 0.01124
Client Sample #: 16 Area Examined: 0.04496 mm=
GRID BOX: Magnification: 20,000
GRID ID: Accelerating Voltage: 100 KeV
# Grid Openings: 4 Analysis Date: 3/25/02
Analysis Performed By:
ROMAN PEYSAKHOV
GO. Structure Structure Type Length ■ ID of Structure NorV , EDS
No ■(Nonadb
F B C M >=05 p >=5(j . Chrys Amphibole Nonasb Ambig/ND
No Coord <5p Elemenls)
S p-2.' U
(L
If
8^
Struct = >0.5p >5:1 Aspect Ratio Grid acceptance:
'J= 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 M >5u
v/= EDS spectrum conforming to laboratory holes or opaque areas
identification criteria obsenzed 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
NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC1OO_OO3389193
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000230389
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