NYC-WTC_000219622

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name; NYC BOE Volume (liters); 1824 Lab Group #; 7047 Filter Type / Filter Area; MCE 385 Lab Sample #; 8 Grid Opening Size; 0.01124 Client Sample #; 10 Area Examined; 0.04496 min* GRIP BOX; Magnification; 20 000 GRID.IP; Accelerating Voltage; 100 KeV # Grid Openings; 4 Analysis Date; 3/12/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or v EDS (Nonadb No F B C M >=05 p >=5p Chrys Amphtoole Nonasb Ambig/ND No Coord <5m Elements)

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Struct = > 0.5g >5:1 Aspect Ratio Grid acceptance: "/= Positive diffraction pattern properties conforming to <50% undissoived filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5m ’/= EDS spectrum confmming to laboratory holes or op«]ue areas identification criteria observed Chrysotile r AMPHIBOLES j Amphibole F = Single Fiber ' Amosite i B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) I Anthophyllite j Non-Asbestos • Tremolite ■ M = Matrix Actinolite Non-Identified NSD = No Structures Detected

CITY_21MC100_000468096 NYC-WTC_000219622