NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet
Client Name: NYC BOE Volume (liters): 1840
Lab Group 7540 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: 3 Accelerating Voltage: too KeV
# Grid Openings: 4 Analysis Date: 4/27/02
Analysis Performed By;
MARK PEYSABLHOV
GO. Structure Structure Type Length ID of Structure Nor'/ EDS
No (Nonadb
F B C M >=05 p : =51J Chrys Amphibole Nonasb Ambig/ND
No Coord <5p Elements)
z
Struct = > 0.5,u > 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
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 Amphibole
F = Single Fiber Amosite
3 = 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_001902312
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000178533
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