NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet
Client Name: NYC BOE Volume (liters): 1944
Lab Group #: 6242 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
GRID ID: Accelerating Voltage: 100 KeV
# Grid Openings: 4 Analysis Date: 1/2/02
Analysis Performed By;
ROMAN PEYSAKHOV
GO. Structure Structure Type Length ID of Structure NorN •EDS
No ' (Nonadb
F- B C M >=05 p >=5(J Chrys Amphibole Nonasb Ambig/ND
No Coord <5m Elements)
K
6^ ------
Struct = > 0.5p > 5:1 Aspect Ratio ■ Grid acceptance:
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 overtapped 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 i
B = Bundle (<3 fibers <1 fiber diameter apart , Crocidolite Ambiguous
C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos
Tremolite
M = Matrix Non-Identified
Actinolite
NSD = No Structures Detected
CITY_21MC100_000622665
NYC-WTC_000225893
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