NYC-WTC_000229182

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet OentNarae: NYC BOE Volume flitersk 1856 Lab Group #: 7968 Filter Type/FUtcr Area; MCE 385 Lab Sample #: 3 Grid Opening Size; 0.01124 Client Sample #; 05 Area Examined: 0.04496 mm- GRID BOX: Magnification: 20,000 GRIDID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/5/02

Analysis Performed By; MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N orv EDS (Nonadb No F B C M >=05 p >=5ij Chrys Amphboe Mofiasb Ambq/NO i No' Coord <5p Etenienis)

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Struct “ > 0.5 p > S; I Aspect Ratio Grid acceptance: Positive diffraetton pattern properties conformitig Io <50% undlssotved filter, overlapped or folded Totals laboratory idenijflcatlon criteria observed <10% patfcuate coverage >50% coverage ate least JCunfoWad or overtappedgnd squares <5% F B C M >5U EOS specOTJrii conforming to laboratoiy boles or opaque areas identificafon criteria observed Chrysotile I AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 Uber diameter apart Crocidolite Ambiguous C = Cluster (>3 Inlerssctions) Anthophyllite Non-Asbestos Tremofite MoMatrix AcUnoIlle Non-ldentified NSO = No Structures Detected

CITY_21MC100_002902378

NYC-WTC_000229182