NYC-WTC_000220910

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters); 1840 Lab Group 7503 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 4 Grid Opening Size: 0.01124

Client Sample #: 04 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: ZHZ Accelerating Voltage: too KeV # Grid Openings: 4 Analysis Date: 4/22/02

Analysis Performed By: t\J> ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure Nor \ MBS -7—.. —1 (Nonadb \o F B C M >=05 p •=5p Ctirys Amphibole Nonasb Airbig/ND ' O/tA Coord I <5p i Elements; » Y ■ A 44^

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Struct > 0 5u - I .Aspect Ratio Grid acceptance; - i>csitive diffraction pattern properties conforming to <50% uridissolved filter, overlapped or folded Totals laCcra'.orv ideniiication cri'ena observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% f f I ET-jC M ' \ - EDS spectrum canforrning to laboratory hoies or opaque areas identification citteria obserred Chrysotile AMPHIBOLES Amphibole , F = Single Fiber Amosite 3 - Bundle k.; fibers <1 ‘icei diameter apart Crocidolite Ambiguous : Anthophyllite \on-Asbestos i C = Bluster M = Mairir intersections! Tremolite [ Non-Identified _j------ Actinolite N.SC - No Structures Detected

CITY_21MC100_000622006 NYC-WTC_000220910