NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet
Client Name: NYC BOE Volume (liters): 1840
Lab Group #: 6398 Filter Type / Filter Area: MCE 385 mm^
Lab Sample #: 4 Grid Opening Size: 0.01124
Client Sample #: 04 Area Examined: 0.04496 mm-
GRID BOX: Magnification: 20,000
GRIDER Accelerating Voltage: 100 KeV
# Grid Openings: 4 Analysis Date: 1/22/02
Analysis Performed By:
MARK PEYSAKHOV
GO. Structure Structure Type Length ID of Structure N or v EDS
(Nonadb
No F B c >-05 p : •=51J ,Chrys Amphibole Nonasb Ambig/ND
Elements)
No Coord <5p
1
I I
Struct = > 0.5p >5:1 Aspect Ratio Grid acceptance:
Positive diffraction pattern properties canforming to <50% undissolved filter, overlapped or folded Totals
laboratory Identification criteria observed <10% particulate coverage >50% coverage ate
east 20 unfolded or overlapped grid squares <5% F B C M >5U
4= EDS spectrum conforminc to laboratory ooles 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 Inierseotions) i Anthophyllite Non-Asbestos
M = Matrix ' Tremolite
Actinolite Non-Identified
NSD = No Structures Detected
CONFIDENTIAL, SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008 CITY_21 MC100_014660192
NYC-WTC_000174763
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