NYC-WTC_000218966

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1840 Lab Group #: 7203 Filter Type / Filter Area: MCE 385 mnV Lab Sample #: 3 Grid Opening Size: 0.01124

Client Sample #: 03 Area Examined: 0.04496 mm^

GRID BOX: GRID ID: ms 'VZ/P' Magnification: Accelerating Voltage: 20,000 100 KeV # Grid Openings: 4 Analysis Date: 3/25/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or N EDS No (Nonadb F B C M >=05 p >=5)j Chrys Amphibole Nonasb Ambig/ND No .Coord <5p Elements)

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Struct = >0.5p >5:1 Aspect Ratio Grid acceptance: Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria obsen/ed <10% particulate coverage >50% coverage ate

V= EDS spectrum conforming to laboratory least 20 unfolded or overlapped grid squares <5% holes or opaque areas F B c M >5iJ

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 i Non-Asbestos Tremolite i M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_000467148 NYC-WTC_000218969