NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet
Client Name: NYC BOE Volume (liters): 1840
Lab Group #: 7404 Filter Type / Filter Area: MCE 385 mm^
Lab Sample #: 10 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: 4 Analysis Date: 4/13/02
Analysis Performed By:
ROMAN PEYSAKHOV
GO. Structure Structure Type Length ID of Structure N or a/ EDS
No (Nonadb
F B C M >=05 u >=5p Chrys Amphibole Nonasb Ambig/ND
No Coord <5p Elements)
/
A A z- __
11
Struct > 0.5g > 5:1 Aspect Ratio Grid acceptance:
■/= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals
laboratory identification criteria observed <10% particulate coverage >50% coverage ate
least 20 unfolded or overlapped grid squares <5% F B C M >5m
V= EDS spectrum conforming to laboratory holes or opaque areas
identificalion criteria observed Chrysotile
AMPHIBOLES ■ Amphibole
F : Single Fiber Amosite
B = Bundle {<3 fibers <1 fiber diameter apart Crocidolite j Ambiguous
C = Cluster (>3 Intersections) Anthophyllite 4 Non-Asbestos
! Tremolite j
M = Matrix Non-Identified
Actinolite
NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC100_003471025
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000176899
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