NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet
Client Name: NYC BOE Volume (liters): 1936
Lab Group #: 7204 Filter Type / Filter Area: MCE 385 mm-
Lab Sample #: 21 Grid Opening Size: 0.01124
Client Sample #: 21 Area Examined: 0.04496 mm-
GRID BOX: Magnification: 20,000
GRID ID: Accelerating Voltage: 100 KeV
# Grid Openings: 4 . Analysis Date: 3/25/02
Analysis Performed By:
R0M.AN PEYSAKHOV
GO, Structure Structure Type Length ID of Structure N or EDS
No >=05 p (Nonadb
F B C M ■ >=5p Ctirys Amphibole Nonasb Ambig/ND
No Coord <5p Elements)
/I ___
Struct = > 0.5p > 5:1 Aspect Ratio Grid acceptance:
-1^ 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
j AMPHIBOLES Amphibole
F = Single Fiber ! Amosite
B = Bundle (<3 fibers <1 fiber diameter apart 1 Crocidolite Ambiguous
C = Cluster (>3 Intersections) ' Anthophyllite Non-Asbestos
[ T remolite
M = Matrix i -
Actinolite Non-Identified
NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC100_003388734
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000230098
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