NYC 9/11 Public Portal Document
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TEM Asbestos (air) Count Sheet
Client Name: NYC BOE Volume (liters): 1840
Lab Group #: 7404 Filter Type / Filter Area: MCE 385 mm^
Lab Sample #: 1 Grid Opening Size: 0.01124
Client Sample #: 01 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 10 of Stnjcture Nor 7 EDS
(Nonadb
No F B C M >=05 M >=5p Chrys Amphiijole Nonasb Ambig/ND
No Coord <5|J Elements)
3 /(
Struct = > 0,5u > 5: i Aspect Ratio Grid acceptance:
Positive diffraction pattern properties conforming Io <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 >5p
•/= EDS spectrum conforming to laboratory holes or opaque areas
identification criteria observed Chrysotile
AMPHIBOLES ' Amphibole
F = Single Fiber Amosite
0 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous
C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos
Tremolite
M = Matrix Actinolite Non-Identified
NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC100_003471016
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000176890
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