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 #: 6 Grid Opening Size: 0.01124
Client Sample #: 06 Area Examined: 0.04496 mm^
GRID BOX: Magnification: 20,000
GRID ID: Accelerating Voltage: 100 KeV
# Grid Openings: 4 Analysis Date: 4/27/02
Analysis Performed By:
MARK PEYSAKHOV
GO. Structure Structure Type Length ID of Structure N or EOS
No (Nonadb
F B C M >=05 |j =5|J Chrys Amphibole Nonasb Ambig/ND
No Coord <51J Elements)
Z.
" a
Struct = > 0.5p > 5:1 Aspect Ratio Grid acceptance:
yl-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
B = Bundle (<3 libers <1 fiber diameter apan Crocidolite Ambiguous
C - Cluster (>3 Intersections) Anthophyllite Non-Asbestos
M = Matrix Tremolite
Actinolite Non-Identified
NSD = No Structures Detected
CONFIDENTIAL, ‘ CITY_21MC100_001902307
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT, 2008
NYC-WTC_000178528
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