NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet
Client Name: NYC BOE Volume (liters): 1920
Lab Group #: 5812 Filter Type / Filter Area: MCE 3S5 mnE
Lab Sample#: 20 Grid Opening Size: 0.01124
Client Sample #: 20 Area Examined: 0.04496 mm*
GRID BOX: Magnification: 20,000
GRID ID:
Accelerating Voltage: 100 KeV
# Grid Openings: 4
Analysis Performed By:
MARK PEYSAKHOV
GO. Structure Structure Type Length ID of Structure N or a/ EDS
No (Nonadb
F B C M >=05 p >=5iJ Chrys Amphibole Nonasb Ambig/ND
No I Coord <5p Elements)
■ cr-x-
! [
c
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 <10% particulate coverage >50% coverage ate
#= EDS spectrum conforming to laboratory
least 20 unfolded or overlapped grid squares <5%
holes or opaque areas
F B c M >5tJ
identification criteria observed Chrysotile
r 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_003459004
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000179351
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