NYC-WTC_000188993

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: m'C BOE Volume (liters): 1952 Lab Group #: 5904 Filter Type / Filter Area: MCE 385 mnV Lab Sample #: 8 Grid Opening Size: 0.01124

Client Sample #: 8 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 11/17/01

Analysis Performed By: ________ Z22_Jr£Z MICHAEL GORYCKI

GO. Structure Structure Type Length ID of Structure N or 7 EDS (Nonadb “9 / No F B C M >=05 p -5l Chrys Amphibole Nonasb Ambig/ND ( C No Coord Elements) <5p

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Struct = > 0.51_ _> 5:1 Aspect Ratio Grid acceptance:

= Positive diffraction pattern properties conforming to <50% undissoived filter, overlapped or folded Totah laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5u EDS spectrum conforming to laboratory holes or opaque areas identification crltena observed Chrysotile AMPHIBOLES ' Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart I Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite ; NSD = No Structures Detected

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NYC-WTC_000188993