NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet
Client Name: NYC BOE Volume (liters): 1840
Lab Group #: 7466 Filter Type / Filter Area: MCE 385 mm-
Lab Sample #: 1 Grid Opening Size: 0.01124
Client Sample #: 01 Area Examined: 0.04496 mm=
GRID BOX: Magnification: 20,000
GRIDID: Accelerating Voltage: 100 KeV
# Grid Openings: 4 Analysis Date: 4/20/02
.Analysis Performed By:
MARK PEYSAKHOV
GO. Structure Structure Type Length ID of Structure Norv EDS
No (Nonadb
F B C M >=05 p ~ >=5pi Chrys Amphibole Nonasb Ambig/ND
No Coord <5p Elements)
Struct-> 0.5u >5:1 Aspect Ratio Grid acceptance:
v= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals
laboratory idenlificalion criteria observed <10% particulate coverage >50% coverage ate
least 20 unfolded or overlapped grid squares <5% B j C j M : >5p
\ = EDS spectrum conforming to laboratory holes or opaque areas
identification criteria observed Chrysotile I
AMPHIBOLES Amphibole j
F = Single Fiber Amosite
B = Suncle i<3 fibers <1 fiber diameter apart Crocidolite Ambiguous
C = Cluster (>3 intersections; Anthophyllite Non-Asbestos
Tremolite
M = Matrix Non-Identified i
Actinolite
_______ .______ I
NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC100_003471148
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000176979
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