NYC-WTC_000229038

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1840 Lab Group #; 7847 Filter Type / Filter Area: MCE 385 mm" Lab Sample #: 1 Grid Opening Size: 0.01124 Client Sample #: 03 Area Examined: 0.04496 mm" GRID BOX; Magnification: 20,000 GRIDID; Accelerating Voltaee: 100 KeV # Grid Openings; 4 Analysis Date; 5/23/02

Analysis Performed By: MARKPEYSAKHOV

GO. Skucture Structure Type Length ID of Structure N or d 60S Mo (Nonadb F B C M >'05 u 2^ Chrys Amphibote I Noiiasb T Amblg/ND No Coord <5)j Elemens)

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! 1 i

Struct = > 0.5u > 5:1 Aspect Ratio Grid acceptance; Positive diffraction pattern properties conforming to <50% undisaobed filer, weriapped or folded Totals laboiatatY idantificatiQn criteria observed <10% partoclate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <S% F B C M >5U '/= EOS specbum conforming to latjoratory holes or opaque areas identification criteria observec Chrysotile AMPHIBOLES Amphibole F = Single Fioer Amosite B = Bundle (<3 fit»rs <15t»r diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) AnUtophylilte Non-Asbestos Tremolite M = Matrix Actirtollte Non-Identified NSO = No Structures Delected

CITY_21MC100_002902090

NYC-WTC_000229038