NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet
Client Name: NYC BOE Volume (liters): 1944
Lab Group #: 6599 Filter Type / Filter Area: MCE 385 mm^
Lab Sample #: 7 Grid Opening Size: 0.01124
Client Sample #: 7 Area Examined: 0.04496 mm-
GRID BOX: Magnification: 20,000
GRID ID: Accelerating Voltage: 100 KeV
# Grid Openings: 4 Analysis Date: 2/8/02
Analysis Performed By: ep
ROMAN PEYSAKHOV
GO. ■ Structure Structure Type Length ID of Structure Norv EDS
No (Nonadb
F B C M >=05 p >=5p Chrys Amphibole Nonasb Ambig/ND
No Coord <5u Elements)
7
(I
Jf-
Struct = > 0.5p > 5:1 Aspect Ratio. Grid acceptance:
Positive diffraction pattern properties conforming to <50% undissolved-filter, overlapped or folded Totals
laboratory identification criteria observed <T0% particulate coverage >50% coverage ate
least 20 unfolded or overlapped grid squares <5% F B C M >5m
V= EDS spectrum conforming to laboratory holes or opaque areas
identification critena obsenzed Chrysotile
AMPHIBOLES Amphibole
F = Single Fiber Amosite
B = Bundle (<3 fibers <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_003389006
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000230271
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