TEM Asbestos air sample results, NYC BOE, Feb 2002

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: NVC BOE Volume filters): 1808 Lab Group #: 6T35 Filter Type f Filter Area: MCE 385 mm= Lab Sample #: 16 Grid Opening Size: 0.01124 Client Sample #: 19 Area Examined: 0.04496 mm- GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 ■Analysis Date: 2/19/02

Analysis Performed By: _____ ; ROMAN PEYSAKHOV

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

7K If ‘f

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Struct = > 0.5,u >5:1 Aspect Ratio Grid acceptance: •/= Positive diffraction pattern properties conforming to <50% undissQlved filter, overtapped or tolded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% B i C >1= EDS spectrum conforming to aboratory ! F holes or opaque areas identification criteria observed Chrysotile i AMPHIBOLES Amphibole i ’ = Single Fiber Amosite 3 = Sundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous j C = Cluster l>3 intersections) Antbiophyllite Non-Asbestos I Tremolite M =■ Matrix I Non-Identined j Actinolite NSD =Nc Structures Detected

CITY_21MC100_003103325

NYC-WTC_000183826