NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet
Client Name: .. NYC BOE Volume (liters): 1800
Lab Group #: 7325 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: 4/4/02
Analysis Performed By:
MARK PEYSAKHOV
GO. Structure Structure Type Length ID of Structure N or 7 EDS
No 1“ '=5|J (Nonadb
F B C M Chrys .Amphibole____ Nonasb_ _Ambig/ND .
Elements)
No Coord <5m
J
Struct = > 0,5p > 5:1 Aspect Ratio Grid acceptance:
y= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals
laboratory identification criteria observed <10% particulate coverage >50% coverage ate
7= EDS spectrum conforming to laboratory
least 20 unfolded oroveriapped grid squares <5% F B C I M >5|J
holes or opaque areas
identification cnteria observed 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_003470830
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000176763
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