NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet
Client Name: NYC BOE Volume (liters): 1840
Lab Group #: 7587 Filter Type / Filter Area: MCE 385 mm^
Lab Sample #: 2 Grid Opening Size: 0.01124
Client Sample #: 02 Area Examined: 0.04496 mm^
GRID BOX: Magnification: 20,000
GRID ID: Accelerating Voltage: 100 KeV
# Grid Openings: 4 Analysis Date: 4/30/02
Analysis Performed By:
MARK PEYSAKHOV
GO. Structure Structure Type Length ID of Structure N or V cDS
No (Nonadb
F B C M >=05 u >=5p Chrys Amphibole Nonasb Ambig/ND
No Coord <5m Elements)
-
cr^
Struct = > 0.5p >5:1 Aspect Ratio Grid acceptance:
7= Positive diffraction pattern properties conforming to <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 I >5u
v'= EDS spectrum conforming to laboratory holes or opaque areas
identification criteria obsen/ed Chrysotile
.AMPHIBOLES Amphibole
F = Single Fiber Amosite
B = Bundle (<3 fibers <1 liber diameter apart Crocidolite
Ambiguous
C = Cluster (>3 Intersections! Anthophyllite Non-Asbestos
T remolite
M = Matrix Non-Identified
Actinolite
NSC = No Structures Detected
CONFIDENTIAL, CITY_21MC100_003471378
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000177140
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