NYC-WTC_000227984

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name.: NYC BOE Volume (liters): 1S40 Lab Group #: 6873 Filter Type / Filter Area: MCE 385 mm- Lab Sample 7 Grid Opening Size: 0.01124 Client Sample #: 07 Area Examined: 0.04496 mm-

GRID BOX: z Magnification: 20,000 GRID ID: Accelerating Voltage: too KeV # Grid Openings; 4 Analysis Date: 3/1/02

Analysis Performed By: ROMAN PEYSAKHOV

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

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Struct =■ > O.Su >5:1 Aspect Ratio Grid acceptance: Posithre diffraction pattern properties conforming to • «*■ " **«. Totals !_■__ <10% particulate coverage >50% coverage ate laboratory identification criteria observed least 20 unfolded or overlapped grid squares <5% F B C } M EDS spectrum conlorming to laboratory holes or opaque areas iOentification criteria observed Chrysotile AMPHIBOLES ' Amphibole F = Single Fiber Amosite S = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite . Non-Asbeslos Tremolite M = Matrix' Actinolite Non-Idcntified NSD = No Structures Detected

CITY_21MC100_002899564

NYC-WTC_000227984