NYC-WTC_000202847

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: ATC Volume (liters): 3610 Lab Group #: 9035 Filter Type / Filter Area: MCE 385 Lab Sample #: 42 Grid Opening Size: 0.01124

Client Sample #: 42 Area Examined: 0.24728 mm-

GRID BOX: Magnification: 20,000 GRID ID: 725 xAccelerating Voltage: too KeV # Grid Openings: 22 Analysis Date: 10/29/02

Analysis Performed By: Xy'/

ROMAN PEYSAKHOV

GO, Structure Structure Type Length ID of Structure NorN EDS No (Nonadb F B C M >=05 M >=5p Chrys Amphibole Nonasb Ambig/ND No Coord <5m Elements)

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I i i I ! i Photo No. ifrom 1 in o asoestos containing samples) Grid acceptance: struct = > 0,5m > 53 Aspect Ratio Totals V = Positive aiffraction pattern properties conforming to <10% particulate coverage >50% coverage ate laooratory identification critena observed least 20 unfolded or overlapped grid squares <5% i F I B j C ! M i >5p holes or opaque areas v= EDS soectrum conforming to laboratory Chrysotile ! loentification critena observed AMPHIBOLES Amphibole F = Single - ber Amosite □ = Sunale ;<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Iniersecaons) Anthophyllite Non-Asbestos Tremolite M = Matrix i Non-Identified I I Actinolite NSD = No Structures Detected

CITY_21MC100_003069353

NYC-WTC_000202888