NYC-WTC_000204733

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 7343 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 4 Grid Opening Size: 0.01124

Client Sample #: 04 Area Examined: 0.04496 mm-

GRID BOX: Ma»nitication: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 4/6/02

Analysis Performed By: MARK PEYSAKHOV

GO, Structure Structure Type Length ID of Siructure N or v EDS No (Nonadb ...F B C M ■=5p Chrys Amphibole . Nonasb Ambig/ND No Cobrtf <5p Elements)

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Struct = > 0.5ii >5:1 Aspect Ratio Grio aoiioiance

'/ = Positive diffraction pattern properties conforming to <50"'ii .^-dissolved 'liter, overlapped or folded Totals laborator/ identification criteria oltserved <10"o loaliculate cr verage >50% coverage ate leasi 2C infolded o: overlapped grid squares <5% ' |F B I C i M I >5u '>= EDS spectrum conforming tc laboratory ho:e.3' ' toaque areas identification criteria observed Clif' .sotile Ml’HlBOL IS Ampinbole F = Single Fiber Amosite E' = Bundle i<3 fibers <1 fiber diameter apart 'i 'ocidoiite Ambiuuous C = Cluster (>3 intersections) Anthophyllite Non-Asinestos T reinolite M = Matrix \on-li.le:;tified -‘Ctinolite MSD * No Structures Detected

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NYC-WTC_000204733