NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet
Client Name: NYC BOE Volume (liters): 1944
Lab Group #: 6491 Filter Type / Filter Area: MCE 385
Lab Sample #: 13 Grid Opening Size: 0.01124
Client Sample #: 13 Area Examined: 0.04496
GRID BOX: Magnification: 20,000
GRID ID: Accelerating Voltage: 100 KeV
# Grid Openings: 4 Analysis Date: 1/28/02
Analysis Performed By:
MARKPEYSAKHOV
GO. Structure Structure Type Length ID of Structure N or EDS •
No (Nonadb
F B C M >=05 p Chrys Amphibole Nonasb Ambig/ND
No Coord ■<5p Elements)
struct = > 0,5(1 _> 5:1 Aspect Ratio Grid acceptance:
^= Positive diffraction pattern properties conforming to ^50% undissolved filter, overlapped or folded Totals
laboratoiy identifioation criteria observed <10% particulate coverage >50% coverage ate
least 20 unfolded or overtapped grid squares <5% F B C M >5m
'J= EDS spectrum conforming to laboratory holes or opaque areas
identification criteria 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_003388871
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000230172
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