NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet
Client Name: NYC BOE Volume (liters): 1840
Lab Group #: 7540 Filter Type / Filter Area: MCE 385
Lab Sample #: 7 Grid Opening Size: 0.01124
Client Sample #: 07 Area Examined: 0.04496 mm^
GRID BOX: Magnification: 20,000
GRID ID: Accelerating Voltage: 100 KeV
# Grid Openings: 4 Analysis Date: 4/27/02
Analysis Performed By:
MARK PEYSAKHOV
GO, Structure | Structure Type Length ID of Structure N or EDS
(Nonadb
No F B C M >=05 p >=5|j Chrys Amphibole Nonasb Ambig/ND
No Coord <5p Elements)
Struct = > 0.5m >5:1 Aspect Ratio Grid acceptance:
A- 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 I C M >5p
A- EDS spectrum conforming to laooratory holes or opaque areas
identification criteria observed
AMPHIBOLES
Chrysotile
Amphibole
i
F = Single Fiber Amosite
S = Bundle (<3 fibers <1 fiber diameter apart Crocidolite j .Ambiguous
C = Cluster (>3 Intersections) Anthophyllite I Non-Asbestos
Tremolite
M = Matrix i Non-Identified
Actinolite
NSD = No Structures Detected
CONFIDENTIAL, CITY_2IMCl00_001902308
SUBJECT TO PROTECTIVE ORDER NO. 2. SEPT. 2008
NYC-WTC_000178529
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