NYC-WTC_000228784

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters); 1800 Lab Group #: 7656 Filter Type / Filter Area: MCE 385 Lab Sample #: 3 Grid Opening Size: 0.01124 Client Sample #: Area Examined: 0.04496 ninr GRID BOX: Magnification: 20 OOO GRIDID; Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/6/02

Analysis Performed By; ROMAN PEYSAKHOV

GO. Structure Structure Type length ID of Structure N or EDS (Nffliadtj No F B C M >=05 p >~5p Chrys Amphibole Nonasb Ambig/ND _ - No Coord <5p Elemenis)

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Struct = > 0.5p >5:1 Aspect Ratio Grid accepance: -/= Posture diffraction pattern properties conforming to <50% undissolved fitter, overtappad or folded Totals laboratory identirtcation criteria observed <10% particutate coverage >50% coverage ate least 20 unfoWed orovenappad grid squares <5% F B C M ■/= EDS spectrum conforming to laboratory holes or opaque areas idenfilicaton criteria observed Chrysotile AMPHJBOLBS Amphibole F = Single Fiber Amosite Crocidolite Ambiguous B - Bundle (<3 fibers <1 fiber diameter apart C = Cluster (>3 Inisrsections) Anthophyllite Non-Asbestos j Tremolite M^Malnx Actinolite Non-Idenhfied i PSD = No Sbuclwes Delected

CITY_21MC100_002901684

NYC-WTC_000228784