NYC-WTC_000229353

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1800 Lab Group #: 8214 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 14 Grid Opening Size; 0.01124 Client Sample #: 16 Area Examined: 0.04496 GRID BOX: Magnification: 20,000 GRIDID: Accelerating Voltage: 100 KeV # Grid Openings: 4 AnaIvsisDate; 6/22/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure NorN EOS No (Nonadb F B C M >=05p . :>=5p Chrys Amphibole Nonasb Ambig/NO No Coord <5p Elements)

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Struct = > 0.5p > S: I Aspect Ratio Grid acceptance:. Positive diffraction pattern properties conforming to <S0% undlssoNed .filter, overlapped or folded Totals laboratory identilication criteria observed <10% (MMtdriate coverage >50% coverage ate least 20 unfolded or overtapped grid squares <5% F B C M >5^1 '/= EOS spectrum conforming to laboratory holes Of opaque areas identilication criteria observed Chrysotile AMPHIBOLES ; Amphibole F - Single Fiber Amosite e = Bundle {<3 fibera <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Mabjx Actinolite,- Non-Idenhficd NSD = No Structures Delected

CITY_2IMCl00_000492024 NYC-WTC_000229353