TEM asbestos air sample results, WC BOE, Feb 2002

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: WC BOE Volume (liters): 1816 Lab Group #: 6648 Filter Type / Filter Area: MCE SSjntnf Lab Sample #: 1 Grid Opening Size: 0.01124 Client Sample 04 , Area Examined: 0.04496 mm- GRID BOX: Magnification; 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2/12/02

Analysis Performed By: ROMAN PEYSAKHOV

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

H ■ >! / . M 5'/’'^------

I I ! I I Struct = >0-5g >5:1 Aspect Ratio Grid accepiancs: <= Positive diffraction pattsm properties conforming to undissoived filter, overiaoped or folded Totals laboratory' ioentification criteria observed 10% particulate coverage >50% coverage aie

£DS spectrurr, conforming to iaooratcry least 20 unioided or overlapped grid squares <5% f hoies or opaque areas L F I B i C I M identification criteria ooservec Clurysotile i i .amphiboles" Amphibole r = Single ,-iber •Amosite £ = Sundie ;<3 fibers <1 fiber diameter apart Crocidolite Ambiguous i C = Cluster '>3 intersections) •Anthophyllite Non-Asbestos ' Tremolite M = Matrix Non-Idennfied Actinolite NSD = No Siructuras Detected

CITY_21MC100_003103142

NYC-WTC_000183762