NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet
Client Name: NYC BOE Volume fliters): 1952
Lab Group #: 7185 Filter Type / Filter Area: MCE 385 mm-
Lab Sample #: 11 Grid Opening Size: 0.01124
Client Sample #: 11 Area Examined: 0.04496 mm^
GRID BOX: Magnification: 20,000
GRID ID: Accelerating Voltage: 100 KeV
# Grid Openings: 4 Analysis Date: 3/23/02
Analysis Performed By:
ROMAN PEYSAKHOV
GO. Structure Structure Type Length ID of Structure N or 7 EDS
No (Nonadb
F B C M >=05 M Chrys Amphibole Nonasb Arabig/ND
No Coord <50 Elements)
9L. If
____
//
Struct = > 0.5p >5:1 Aspect Ratio Grid acceptance:
Positive diffraction pattern properties conforming to <59% undissolved filter, overlapped or folded Totals
taboratorj' identification criteria observed <10% particulate coverage >50% coverage ate
least 20 unfolded or overlapped grid squares <5% F B C M >5|j
EDS spectrum conforming to laboratory holes or opaque areas
identification criteria observed Chrysotile
AMPHIBOLES Amphibole
r = Single Fiber Amosite
S = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous
C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos
Tremolite
■ M = Matrix
; Actinolite Non-Identified
NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC1OO_OO3388666
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000230048
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