NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet
Client Name: NYC BOE Volume niters): 1920
Lab Group #: 8138 Filter Type / Filter Area: MCE 385 mm’
Lab Sample #: 11 Grid Opening Size: 0.01124
Client Sample #: 11 Area Examined: 0.04496 mm’
GRID BOX: Magnification: 20,000
GRID ID: Accelerating Voltage: 100 KeV
# Grid Openings: 4 Analysis Date: 6/17/02
Analysis Performed By:
MARKPEYSAKHOV
GO. Structure Structure Type Length ID of Structure NorV EDS
No >=05 p Amphibole Nonasb Ambig/ND (Nonadb
F B C M >=5p Chrys Elements)
No Coord <5m
3
Struct = > 0,5p >5:1 Aspect Ratio Grid acceptance:
■'/ = Positive diffraction pattern properties conforming to *^0% undissolved filter, overlapped or folded Totals
laboratory identification criteria observed <10% paniculate coverage >50% coverage ate
■/= EDS spectrum conforming to laboratory
least 20 unfolded or overlapped grid squares <5%
holes or opaque areas
F B I C M >5m
identification criteria observed Chrysotile
AMPHIBOLES ' Amphibole
F = Single Fiber Amosite
B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous
C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos
M = Matrix Tremolite
Actinolite Non-Identified
NSD = No Structures Delected
CONFIDENTIAL, CITY_21MC100_003387875
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000229750
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