NYC 9/11 Public Portal Document
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TEM Asbestos (air) Count Sheet
Client Name: NYC BOE Volume (liters): 1840
Lab Group #: 7587 Filter Type / Filter Area: MCE 385
Lab Sample #: 11 Grid Opening Size: 0.01124
Client Sample #: 11 Area Examined: 0.04496 mm’
GRID BOX: Magnification: 20,000
GRIDID: Accelerating Voltage: 100 KeV
# Grid Openings: 4 Analysis Date: 4/30/02
Analysis Performed By:
MARK PEYSAKHOV
GO, Structure Structure Type Length ID of Structure N or 7 EDS
(Nonadb
No F B C M >=05 M Chrys Amphibole Nonasb Ambig/ND
No Coord Elements)
<5u
Struct = > Tori >5:1 Aspect Ratio Grid acceptance:
7= Positive diffraction pattern properties conforming to <50% undissolved filter, overtapped or folded Totals
laboratory identification criteria observed <10% particulate coverage >50% coverage ate
least 20 unfolded or overlapped grid squares <5% F B C M i >5u
v'= EDS spectrum conforming to laboratory holes or opaque areas
identification criteria observed Chrysotile
AMPHIBOLES Amphibole
F = Single Fiber Amosite
B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite
Ambiguous
C = Cluster :>3 intersectionsi Anthophyllite Non-Asbestos i
Tremolite
M = Matrix
Actinolite I Non-ldentified
NSD = Mo Structures Detected
CONFIDENTIAL, CITY_21MC100_003471387
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000177149
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