NYC-WTC_000229210

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1808 Lab Group #; 7988 Filter Type / Filter Area: MCE 385 mm" Lab Sample #: 13 Grid Opening Size: 0.01124 Client Sample #: 15 Area Examined: 0.04496 mm" GRIP BOX: Magnificatiop; 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 V EDS (Nonadb No F B C M >=05 M >=5p Chrys An^ihtiofB Nonasb Amisig/ND i No! Coord Elements) -—

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t , I __ J -L i Struct ” > 0.5p > 5:1 Aspect Ratio Grid acceptance: Positive diffraction pattern propeniea conforming to <50% undSsolyBd Ster, overtapped or folded Totals laboratoty identification criteria observed <10% partculatecovwagB >50% coverage ate least 20 unfolded or overtapped grid squares <5% F B C M EDS spectrum conforming to laboratory holes or opaque areas identificadon criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle {<3 libers <1 fiber diameter apart Croddoiit© Ambiguous C = Cluster (>3 intersections) Anthophyllite | Non-Asbestos Tremolite i M = Matrix Actinolite Non-Identified NSO = No Structures Detected

CITY_2IMCl00_000491709 NYC-WTC_000229210