NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet
Client Name: NYC BOE Volume (liters): 1928
Lab Group #: 6575 Filter Type / Filter Area: MCE 385 mm-
Lab Sample #: 15 Grid Opening Size: 0.01124
Client Sample #: 15 Area Examined: 0.04496 mm-
GRID BOX: Magnification: 20,000
GRID ID: Accelerating Voltage: 100 KeV
# Grid Openings: 4 Analysis Date: 2/6/02 .
Analysis Performed By:
MARK PEYSAKHOV
GO. Structure Structure Type Length ID of Structure Norv EDS
, No. (Nonadb
F B C M >=05 p >=5p' Chrys Amphibole Nonasb ■ Ambig/ND .
No Coord <5p Elements)
Struct = > 0.5p > 5:1 Aspect Ratio Grid acceptance:
>/= Positive diffraction pattern properties confomiing 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 >5p
■/= EDS spectrum conforming to laboratory ' holes or opaque areas
identification criteria observed Chrysotile
AMPHIBOLES Amphibole
F = Single Fiber Amosite
8 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous
C = Cluster (>3 Intereections) Anthophyllite Non-Asbestos
Tremolite
M = Matrix Non-Identified
Actinolite
NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC1OO_OO3388989
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000230258
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