NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet
Client Name: NYC BOE VoIumeJlitersL 1920
Lab Group #: 6986 Filter Type / Filter Area: MCE 385
Lab Sample #: 15 Grid Opening Size: 0.01124
Client Sample #: 15 Area Examined: 0.04496 mm-
GRID BOX: Magnification: 20,000
GRIP ID: Accelerating Voltage: 100 KeV
# Grid Openings: 4 Analysis Date: 3/8/02
Analysis Performed By:
MARK PEYSAKHOV
GO Structure Structure Type Length ID of Structure N or 4 EDS
(Nonadb
No F B C M >=05 p Chrys Ampnibote Nonasb Ambig/ND
No Coord <50 Elements)
Struct = > 0.5h > 5; I Aspect Ratio Grid acceptance;
4= 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 overlapped grid squares <5% F B C M I >5p
EDS spectrum conforming to laboratory holes or opaque areas
Identification criteria observed Cln-ysotile I
AMPHIBOLES Amphibole I
F = Single Fiber I
Amosite
B = Bundle (<3 libers <1 fiber diameter apart Crocidolite Ambiguous
C = Cluster (>3 intersections) Anthophyllite Non-Asbestos
Tremolite
M = Matrix Non-Identified
Actinolite
NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC100_003468413
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000181382
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