NYC-WTC_000212410

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: WC BOE Volume (liters): 1936 I.ab Group #: 7255 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 6 Grid Opening Size: 0.01124 Client Sample #: 06 Area Examined: 0.04496 mm^

GRIP BOX: Magnification: 20,000 GRU) ED: Accelerating Voltage: too KeV fr Grid Openings: 4 Analysis Date: 4/8/02

Analysis Performed By: MARK PEYSAKHOV

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

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Struct = > 0 .5p > 5:1 Aspect Ratio Grid acceptance: = Positive diffraction pattern properties confomning to "^50% undssotved filter, overtepped or folded Totals Iriboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5p \ = EDS spectrum confonning to laboratory holes oropariue areas icentification criteria observed Chrysotile AMPHIBOLES i Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite hSD = No Structures Detected

CITY_21MC100_002866428

NYC-WTC_000212410