NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet
Client Name: NYC BOE Volume niters): 1928
Lab Group #: 7216 Filter Type / Filter Area: MCE 385 mm-
Lab Sample #: 5 Grid Opening Size: 0.01124
Client Sample 5 Area Examined: 0.04496 mm^
GRID BOX: Magnification: 20,000
GRID ID: Accelerating Voltage: 100 KeV
# Grid Openings: 4 Analysis Date: 3/26/02
Analysis Performed By:
MARK PEYSAKHO.V
GO. Structure Structure Type Length ID of Structure Norv EDS
No (Nonadb
F B C M >=05 p >=5p Chrys Amphibole Nonasb Ambig/ND
No Coord <5p Elements)
Struct = > 0.5n > 5:1 Aspect Ratio Grid acceptance;
7= Positive diffraction pattern properties conforming to undissolved filter, overlapped or folded Totals
laboratory identification criteria observed <10% particulate coverage >50% coverage ate
7= EDS spectrum conforming to laboratory
least 20 unfolded or overlapped grid squares <5%
holes or opaque areas
F B c M >5p
identification criteria observed Chrysotile
AMPHIBOLES ; Amphibole
F = Single Fiber Amosite
E = Bundle i<3 fibers <1 fiber diameter apart 1 Crocidolite Ambiguous
C = Cluster (>3 Intersections) ) Anthophyllite Non-Asbestos
M = Matrix Tremolite
Actinolite Non-ldentified
NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC1OO_OO3388747
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000230103
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