NYC-WTC_000218139

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1936 Lab Group #: 7058 Filter Type / Filter Area: MCE 385 mm* Lab Sample #: 9 Grid Opening Size: 0.01124 Client Sample #; 09 Area Examined: 0.04496 mm^

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/13/02

Analysis Performed By: ROMAN PEYSAKHOV

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

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Struct = > 0.5u .> 5:1 Aspect Ratio Grid acceptance; y = Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particuiate coverage >50% coverage ate least 20 unfolded or overtapped grid squares <5% F B I C 'i- EDS spectrum conforming to laboratory holes or opaque areas Chrysotile -- 1-- idenpfication criteria observed I AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite Non-Identified NSD = No Structures Detected

CITY_2IMCl00_000465952 NYC-WTC_000218139