NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet
Client Name: NYC BOE Volume (liters): 1800
Lab Group #: 7847 Filter Type / FUter Area: MCE 385 mm"
Lab Sample #: 7 Grid Opening Size: 0.01124
Client Sample #: 09 Area Examined: 0.04496 mm^
GRID BOX: Magnification: 20 000
GRID ID: Accelerating Voltage: 100 KeV
# Grid Openings: 4 Analysis Date: 5/23/02
Analysis Performed By:
MARK PEYSAKHOV
GO. Structure Structure Type Length ID of Structure N or V EDS
No tNonadb
F 6 C M >=05 p Chrys Amphibole Nonasb Ambig/ND
Elements)
No Coord <5p
Struct = >0.5u >5:1 Aspect Ratio Grid acceptance;
a/= Positive diffraction pattern properties conforming to ^50% unlived filter, overlapped or folded Totals
latMratory identification criteria observed
I M AM <10% particulate coverage >50% coverage ate
■/= EDS spectrum conforming to laboratory
least 20 unfolded or overlapped grid squares <5%
holes or opaque areas
F B C M >5y
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
Tremolite
M = Matrix Non-Identified
Actinolite
NSO = No Structures Detected
CONFIDENTIAL, CITY_21MC100_003388428
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000229877
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