NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet
Client Name:
NYC BOE Volnme (liters): 1928
Lab Group #: 7204 Filter Type / Filter Area: MCE 385 mm-
Lab Sample #: 4 Grid Opening Size: 0.01124
Client Sample #: 4 Area Examined: 0.04496 mm*
GRID BOX: Magnification: 20,000
GRID ID: Accelerating Voltage: 100 KeV
# Grid Openings: 4 Analysis Date: 3/25/02
Analysis Performed By:
ROMAN PEYSAKHOV
GO. Structure Structure Type Length ID of Structure Norv EDS
No ■ (Nonadb
F B C >=05 p >=5p Chrys Amphibole Nonasb Ambig/ND
No Coord ‘SM Elements)
7
Struct = > 0.5|i .> 5:1 Aspect Ratio Grid acceptance:
'I = 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 >5p
'/= 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
T remolite
M = Matrix Non-ldentified
Actinolite
NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC1OO_OO3389181
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000230378
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