NYC-WTC_000229114

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1808 Lab Group #: 7893 Filter Type / Filter Area; MCE 385 mm^ Lab Sample #: 15 Grid Opening Size: 0,01124

Client Sample #: 17 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20.000 GRIDID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date; 5/28/02

Analysis Performed By: ROMAN PEYSAKHOV

GO, Sfructure Structure Type Length ID of Structure N or V EDS (NonatJt) No F B C M >=05 p Chrys 5 Artiphibcte Nonast) AmbigiNO No Coord <5p Elements)

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Struct = > 0.5p > S: i Aspect Ratio Grid acceptance: ’J=Positive diftaction panem propsrstes conforming to <50% iindissotv&c filter, overtapped or folded Totals laboratory idenliricabon criteria observed <10% particulate coverage >50% coverage ale least 30 unfolded or overtapp«d grid squares <5% F B C M '/'= EDS Spectrum conforming lo laboratory hales or opaque areas identification criteria observed Chrysotik AMPHIBOLES Amphibole F = Single Fiber Amosite Ambiguous 0 = Bundle (<3 fibers <1 fiber diameter apart C = Cluster (>3 Intersections) Crocidolite Anthophyllite Non-Asbestos 1i Tremolite M = Matrrx Actinolite Non-Jdentified T NSD = No Structures Detected

CITY_21MC100_002902224

NYC-WTC_000229114