NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet
Client Name: NYC BOE Volume (liters): 1928
Lab Group #: 5874 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: Magnifieation: 20,000
GRID ID: Accelerating Voltage: 100 KeV
# Grid Openings: 4 Analysis Date: 11/11/01
Analysis Performed By:
ROMAN PEYSAKHOV
GO. Structure Structure Type Length ID of Structure N or 4 EDS
No Nonasb Ambig/ND
(Nonadb
F B C «05iJ >=5|j Chrys Amphibole
Elements)
No Coord <5|J
IP '
^Xi^ X
ri
(I
Struct = > 0.5pi _> 5:1 Aspect Ratio Grid acceptance:
Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals
laboratory identification criteria observed <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 >5u
identification criteria observed Chrysotile
^AMPHIBOLES j 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 Detected ,
CONFIDENTIAL, CITY_21MC100_003458340
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000179150
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