NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet
Client Name: NYC BOE Volume (liters): 1920
Lab Group #: 7136 Filter Type / Filter Area: MCE 385 mm’
Lab Sample #: 18 Grid Opening Size: 0.01124
Client Sample #: 18 Area Examined: 0.04496 mm^
GRID BOX: Magnification: 20,000
GRID ID: Accelerating Voltage: 100 KeV
# Grid Openings: 4 Analysis Date: 3/19/02
Analysis Performed By:
MARKPEYSAKHOV
GO. Structure Structure Type Length ID of Structure NorV EDS
I No (Nonadb
F B C M >=05 p >=5p Chrys Amphibole Nonasb Amb'g/ND
No ' Coord <5p Elements)
Struct = > 0.5p .>5:1 Aspect Ratio Grid acceptance:
v'= Positive diffraction pattern properties conforming to “=50% undissolved filter, overlapped or folded Totals
laboratory identification criteria observed <10% particulate coverage >50% coverage ate
'J- EDS spectrum conforming to laboratory
least 20 unfolded orovertapped grid squares <5%
holes or opaque areas
F B c M >5p
identification criteria observed Chrysotile
AMPHIBOLES Amphibole
F = Single Fiber Annosite
B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous
C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos
M = Matrix Tremolite
Actinolite Non-Identified
NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC1OO_OO3388582
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000229993
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