NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet
Client Name: NYC BOE Volume (liters): 1840
Lab Group #: 7466 Filter Type / Filter Area: MCE 385 mm^
Lab Sample #: 9 Grid Opening Size: 0.01124
Client Sample 09 Area Examined: 0.04496 mm’
GRID BOX: Magnification: 20,000
GRIP ID: Accelerating Voltage: 100 KeV
# Grid Openings: 4 Analysis Date: 4/20/02
Analysis Performed By:
MARK PEYSAKHOV
GO, Structure Structure Type Length ID of Structure N or 7 EDS :
No (Nonadb
F B C M >=05 p Chrys Amphibole Nonasb Ambig/ND
No Coord <5p Elements) j
i -
Struct 0.5p >5:1 Aspect Ratio Grid acceptance:
7= Positive diffraction pattern properties conforming to <50% 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 gnd squares <5% [
holes or opaque areas
Pine Y i >5y
identification criteria observed Chrysotile 1
AMPHIBOLES Amphibole | i
F = Single Fiber Amosite
B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite
Ambiguous
C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos
T remolite
M = Matrix
Actinolite Non-Idencified
NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC100_003471156
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000176987
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