TEM Asbestos air sample results, NYC BOE, Feb 2002

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: NYC BOE A’olume filters): 1S32 Lab Group #: 6780 Filter Type / Filter Area: MCE 385 Lab Sample #: 7 Grid Opening Size: 0.01124 Client Sample #: 05 Area Examined: 0.04496 mm- GRID BOX: Magnification: 20.000 GRID ID: ■Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2/22/02

Analysis Performed By: MARKPEYSAKHOV

GO. Structure Structure Type Length ID of Structure Nor v EDS I No >=05 u (Ncnadb | F B C M Chrys Amphibole Nonasb Ambig/ND No Coord <5|J Elements)

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Struct = > 0.5u >5:1 Aspect Ratio Grid acpeptance: Positive diffraction pattern properties conforming to <50% undissoived filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overiaoped grid squares <5% f B C j M j >5l \= EDS spectrum conforming to laboratory holes or ooaque areas ! _________ I identification criteria observed Cluysouie । ■AMPHIBOLES i Amphibole I F = Single Fiber ■Amosite 3 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite I Ambiguous ) C = Cluster (>2 Intersections) Anthophyllite I Non-Asbestos ) Tremolite M = Matrix Nou-Identified i Actinolite i I NSD = No Structures Detected

CITY_21MC100_003103382

NYC-WTC_000183844