NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet
ClientNam^ NYC BOE Volume (liters): 1810
Lab Group #: 6375 Filter Type / Filter Area: MCE 385 mm^
Lab Sample #: 12 Grid Opening Size: 0.01124
Client Sample #: 12 Area Examined: 0,04496 mm"
GRID BOX: Magnification: 20,000
GRIDID: Accelerating Voltage: 100 KeV
# Grid Openings: 4 Analysis Date: 1/19/02
Analysis Performed By:
MARK PEYSAKHOV
GO. Structure Structure type Length ID of Structure N or 7 EDS
(Nonadb
No F B C M >=05 p OhnA i Amphibole \ Nonasb Ambig/ND
Nc Coorci <5p Elamsnts)
Ka”
Struct = > 0.5n > 5:1 Aspect Ratio Grid acceptance;
V = Positive diffraction pattern properties conforming to undissoked filter, overlapped or folded Totals
laboratory identification criteria observed <10% particulate coverage >50% coverage ate
leas; 20 unfolded or overlapped grid squares <5% f F B C M >5p
/= EOS spectrum conforming to laboratory holes or opaoue areas
identification criteria observed Chrysotile
AMPHIBOLES Amphibole
F = Smote Fiber Amosite
E = Bundle (<3 fibers <1 fiber diameter apart Crocidolite
Ambiguous
C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos
Tremolite
M = iviatrix Non-Identified
Actinolite
NSD = Nc Structures Detected
CONFIDENTIAL, SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008 CITY_21 MC100_014660175
NYC-WTC_000174758
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