NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet
Client Name: NYC BOE Volume fliters): 1936
Lab Group #: 7192 Filter Type / Filter Area: MCE 385 mm-
Lab Sample #: 12 Grid Opening Size: 0.01124
Client Sample #: 12 Area Examined: 0.04496 mm-
GRID BOX: Magnification: 20,.000
GRID ID: Accelerating Voltage: 100 KeV
# Grid Openings: 4 Analysis Date: 3/24/02
Analysis Performed By;
MARK PEYSAKHOV
GO. Structure Structure Type Length I ID of Structure Norv EDS
(Nonadb
No F B C >=05 p >=5p Chrys Amphibole Nonasb Ambig/ND
No Coord <5p Elements)
Struct = > 0.5p >5:1 Aspect Ratio Grid acceptance:
7= Positive diffraction pattern properties conforming to '^0% 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 >5u
'/= EDS spectrum conforming to laboratory holes or opaque areas
identilication criteria observed Chrysotile
AMPHIBOLES Amphibole
F = Single Fiber Amosite
B = Bundle (<3 fibers <1 liber diameter apart Crocidolite Ambiguous
C = Cluster (>3 Intersections) Anthophyllite | Non-Asbestos
Tremolite i
M = Matrix
Actinolite Non-Identified
NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC1OO_OO3388696
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000230069
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