NYC-WTC_000191892

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: N^"C BOE Volume (liters): 1928 Lab Group #: 8192 . Filter Type / Filter Area: MCE 385 mm^ 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: 6/20/02

Analysis Performed By: MARK PEYSAKHOV

GO, Structure Structure Type Length , ID of Structure N or V EDS (Nonadh No F B C M >=05 p Chrys Amphibole Nonasb Ambig/ND No Coord Elements)

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Struct = >0.5p >5:1 Aspect Ratio Grid acceptance: ^)= Positive diffraction pattern properties conforming to <50% undissolved filter, overiapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overtapped grid squares <5% F B C M >5|j ’/= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile ^"amphiboles ! Amphibole F = Single Fiber : Amosite i B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite ; Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_003091892

NYC-WTC_000191892