NYC-WTC_000223645

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 72iS4 Filter Type / Filter Area: MCE 385 mrn^ Lab Sample #: 6 Grid Opening Size: 0.01124 Client Sample #: 06 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20 000 GRID ID: .Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/31/02

Analysis Performed By: MARK PEYSAKHOV

GO. 1 Structure Structure Type Length ID of Structure N or v EDS No (Nonadb , F B C M >=05 M :>=5p Chrys Amphibole Nonasb Ambig/NO Elements) ' So Coord <5m / ^>4

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1 i

_____ _____ _______ L_J______ Struct - > 0 5u > 5:1 Aspect Ratio Grid acceptance: V = Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Tot^ laboraiorv identification criteria ooserved <10% particulate coverage >50% coverage ate least 20 unfolded or overtapped gnd squares <5% TfT b : c m >5i. ■v' = EDS spectrum conforming to laooratciy holes or opaque areas identificaton cnteria observed Chrysotile ) i ■AMPH1BOI.es .Amphibole i F = Single Fiber Amosite 6 = Sundle j<3 fibers <1 fiber diameter apart Crocidolite Ambiguous [ [ C = Cluster (>3 Intersections! Anthophyllite \on-Asbestos I T Tremolite M = Matrix N on- Identified~j J . Actinolite NSD = No Structures Detected ’ , .. f at. .it.

CITY_21MC100_002919628

NYC-WTC_000223645