NYC-WTC_000202535

NYC 9/11 Public Portal Document

TEM y^sb e sto s (air) C o unt Sheet Client Name: i BOE Volume (liters): 1920 Lab Group #: 8759 Filter Type / Filter Area: , /MCE 7385 mm-1 Lab Sample #: 4 Grid Opening Size: 0.01124

. Client Sample #: 04 Area Examined: 0.04496 Magnification: 20 G»C> ■GRID ID: 'iL Accelerating Voltage: 100 KeV . tf Grid Openings: 4 • Analysis Date: 8/25/02 i .i;

Analysis Performed By: 7 ROMAN PEYSAKHOV

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

-y • 7^

zTF— I

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.•.' Struct = > 0.5p. .> 5; i Aspect Ratio Grid acceotancs: 7= Positive diffraction pattern properties conforming to s50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed , <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped giid squares <5% F B C M >5p '1'= EDS spectrum conforming to laboratoiy holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES i Amphibole F = Singie Fiber • Amosite E = Sundle (<3 fibers <1 fiber diarneter apart Crocidolite, Ambiguous ■C = Clusterl>3 Intersections) A Anthophyllite Non-Asbestos M = Matrix r Tremolite Actinolite; Non-Identified tjsO = No Structures Detected

CtrfYZIlMCl ‘0 01003 2 73171

NYC-WTC_000202535