NYC-WTC_000223450

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: WC BOE Volume filters): 1928 Lab Group #: 6052 Filter Type / Filter Area: MCE 385 Lab Sample #: 9 Grid Opening Size: 0.01124

Client Sample #: 11 Area Examined: 0.04496 mm=

GRID BOX: Magnification: 20,000 GRIDID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 12/6/01

Analysis Performed By: e=5=*’

MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or a' ’ EDS ■■ ........................ ■.-.(Nonadb ■ F B C M >=05 u >=5p Chrys ‘ Amphibole NonasD ' Ambig/ND' No Coord <5p Elements)

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

CITY_21MC100_002890675

NYC-WTC_000223450