NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet
Client Name: NYC BOE Volume (liters): 1928
> Lab Group #: 8739 Filter Type / Filter Area: MCE 385 mm^
Lab Sample #: 9 Grid Opening Size: 0.01124
Client Sample #: 9 Area Examined: 0.04496 mm^
GRID BOX: Magnification: 20,000
GRID ID: Accelerating Voltage: 100 KeV
# Grid Openings: 4 Analysis Date: 8/23/02
Analysis Performed By:
ROMAN PEYSAKHOV
■ GO. Structure Structure Type Length ID of Structure Norv EDS
(Nonadb
No F B C M >=05 p >=5fj Chrys Amphibole Nonasb Ambig/ND
Elements)
No Coord <5u
74
—
Struct = >0.5p >5:1 Aspect Ratio Grid acceptance:
a/= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals
<10% particulate coverage >50% coverage ate
laboratory identification criteria observed
V= EDS spectrum conforming Io laboratory
least 20 unfolded or overlapped grid squares <5% F B c M >5m ■
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_003430918
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000175401
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