NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet
Client Name: NYC BOE Volume (liters): 1840
Lab Group #: 7558 Filter Type / Filter Area: MCE 385 mm-
13 Grid Opening Size: 0.01124
Client Sample #: 13 Area Examined: 0.04496 mm-
GRID BOX: Magnification: 20,000
GRID ID: Accelerating Voltage: 100 KeV
# Grid Openings: 4 Analysis Date: 4/28/02
Analysis Performed By:
ROMAN PEYSAKHOV
GO. Stnjcture Structure Type Length ID of structure N or 7 EDS
(Nonadb
No F B M >=05 |j :>-5p Chrys Amphibole Nonasb Ambig/NO
No Coord <5 (J Elements)
/W'
JC-
Struct = > C.5p >5:1 Aspect Ratio Grid acceptance:
7= Pcsitive diffraction pattern properties conforming to <50% Undissoived filter, overlapped or folded T otais
laboratory identification criteria observed <10% particulate coverage >50% coverage ate
7= EDS spectrum conforming to laboratory
least 20 unfolded or overapped grid squares <5%
holes dr opaque areas
F B S C I M >5p
identii cation criteria observed Chrysotile
amphiboles Amphibole
F = Single Fiber ■ Amosite
B - Bundle (<3 fibers <1 fibe'diameter apart Crocidolite Ambiguous
C = Cluster f>3 intersectionsi Anthophyllite Non-Asbestos
I Tremolite
M = Matrix
I Actinolite Non-Identified
NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC100_003471324
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000177103
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