NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet
Client Name: NYC BOE Volume (liters): 1936
Lab Group #: 7192 Filter Type / Filter Area: MCE 385 mm*
Lab Sample #: 1 Grid Opening Size: 0.01124
Client Sample #: 1 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 ID of Structure N or 9 EDS
(Nonadb
No F B C M >=05 p >=5p Chrys Amphibole Nonasb Ambig/ND
No Coord Elements)
<5p
Struct = > 0.5p -> 5:1 Aspect Ratio Grid acceptance:
A- Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals
laboratory identification criteria obseived <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
identification criteria observed Chrysotile
, AMPHIBOLES j - Amphibole
r = Single Fiber Amosite
B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite I Ambiguous
C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos
' M = Matrix
Tremolite
Actinolite Non-Identified
NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC100_003388685
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000230059
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