NYC-WTC_000228633

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sbt et Client Name: NYC BOE \ le (liters): 1816 Lab Groun #; 7538 Filtei Tvpt N fei Area: MCE 385 mm* Lab Sample #: 17 Gricti ;:iiii«u Size: 0.01124

Client Sample #: 19 Ait:i Examined: 0.04496 mm^

GRIP BOX: Akmuitication: 20,000 GRID IP: Aecelei a:::V’riltage: 100 KeV # Grid Openings: 4 Anii vsis Date: 4/25/02

Analysis Performed 1 : MARK PEYSAKHOV

GO. Structure Structure lyoe Length N or V EDS No (Nonadb F B >-05 p >=5)J Chrys ■ Ampn.: •. " asb Ambig/ND No Coord <5p Eiemenis)

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Struct = - 'I sp >5:1 Aspect Ratio G k .::.-:epiance: >/= Positive diffraction pattern properties contonr, .ic o - . . .^dissolved filter, overlapped or folded Totals laboratory identification criteria observed <' 0 . particulate coverage >50% coverage ate tea? . 3 unfolded or overtapped grid squares <5% ‘ r ; B i C I M i >5u EDS spectrum conforming to laboratory .r opaque areas identification cnieria observed “T—rr” •■IRHIBOLES F = Single Fiber Amosite Crocidolite ..H.q B = Bundle (‘ 3 fibers <1 fiber diameter apart C = Cluster i>3 Iniersectionsl ■uUhophyllite No; M = Matrix Tremolite - -4— Actinolite Non i' Cd !

NSO = No Si-Lictures Detected

CITY_21MC100_002901186

NYC-WTC_000228633