NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet
Client Name: NYC BOE Volume (liters): 1840
Lab Group #: 7510 Filter Type / Filter Area: MCE 385 mm^
Lab Sample #: 6 Grid Opening Size: 0.01124
Client Sample #: 06 Area Examined: 0.04496 mm‘
GRID BOX: Magnification: 20,000
GRID ID: Accelerating Voltage: too KeV
# Grid Openings: 4 Analysis Date: 4/23/02
Analysis Performed By:
MARK PEYSAKHOV
GO. Structure Structure Type Length ID of Structure N or 7 EDS
(Nonadb
No F B C M >=05 (J >=5|j Chrys Amphibole Nonasb Ambig/ND
No Coord Elements)
<5u
2 ^3
Struct = >0.5g >5:1 Aspect Ratio Grid acceptance:
4= Positive diffraction pattern properties conforming to <50% undissolved filter, overiapped 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 >5u
7= EDS spectrum conforming to laboratory holes 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 Intersections) Anthophyllite Non-Asbestos
Tremolite
M = Matrix
Actinolite Non-Identified
NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC100_003471240
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000177045
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