NYC-WTC_000229201

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name; NYC BOE Volume (lit ersi: 1824 Lab Group #; 7988 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 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings; 4 Analysis Date; 6/6/02

Analysis Performed By: MARKPEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or EOS (Nonadb No F B C M >=05 M Chrys AmptiiMte Nonaab AmbigW No Coord <5u Eiements)

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Struct = > 0.5g >5:1 Aspect Ratio Grid acceptance: -7= Positive dtflraciion pattern properties contoming to <50% urxlissoived filter, overtapp sd or folded Totals laboratory tdenfflcatlon crteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5p 'i= EDS Spectrum conforming to laboratory holes or opaque areas ideniificalion criteria observed Chrysotile Famphibqles Ajminibole F = Single Fiber j Amosite B = Bundle {<3 Abets <1 fiber diameter apait Crocidolite Ambiguous C = Cluster (>3 Intersections) ■ Anttiophyliita Non-Asbestos Tremolite M = Matrix Actinolite Non-Identified NSD = No Structures Detected

CITY_2IMCl00_000491697 NYC-WTC_000229201