NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet
ClientNam^ NYC BOE Volume (liters): 1960
Lab Group #: 6527 Filter Type / Filter Area: MCE 385 mm=
Lab Sample #: 10 Grid Opening Size: 0.01124
Client Sample #: 10 Area Examined: 0.04496 mm^
GREP BOX: 2^3 Magnification: 20,000
GRIDED: Accelerating Voltage: 100 KeV
# Grid Openings: 4 Analysis Date: 2/1/02
Analysis Performed By:
ROMAN PEYSAKHOV
GO. Structure Structure Type Length ID of Structure Nor\ EDS
No (Nonadb
F B C M >=05 p >=5p Chrys Amphibole Nonasb Ambig/ND
Elements)
; No Coord <5p
re. rzs^ VW
X ,9 'pg. 7r
Struct = > 0.5p > 5:1 Aspect Ratio Grid acceptance:
'I- 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 >5tJ
'/= 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
N SD = No Structures Detected
CONFIDENTIAL, CITY_21MC100_003388926
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000230209
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