NYC-WTC_000229359

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume fitters): 1920 Lab Group #: 8229 Filter Type / Filter Area: MCE 385 mm’ Lab Sample #: 11 Grid Opening Size: 0.01124 Client Sample #: 11 Area Etcgmined: 0.04496 mtn’ GRID BOX: Magnification: 20, GRID BP: jfOKT Accelerating Voltage: 100 KeV # Grid Openings; 4 Analysis Date; 6/23/02

Analysis Performed By; ZZE ROMAN PEYSAKHOV

GO. Structure Sb\jcture Type Length lO of Structure N or 7 EDS No Nocast) (Naiadb F 5 C M >=(f5p. :>=5p Chrys Anphibole Ambig/NO <5m Elemenls)

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Struct = > 0.5p >5:1 Aspect Ratio GrfdaoceplancK Positive diffraction pattern prc^ierbes conforming to <50% undissoivsd fitter, overlapped or folded Totals latxxatory idenbficafcn cntera observed <10% particuiate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M )/= EDS speorum conforming to laboratory holes or opaque areas rdenbfcation criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle f<3 Abers <1 fiber dtameter apart Crocidolite Ambiguous C - Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite , - M = Matri)( Actinolite . ; Non-Idcntified NSD = No Structures Detectec

CITY_2lMC100_000492045 NYC-WTC_000229359