NYC-WTC_000228771

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1800 Lab Group #: 7646 Filter Type / Filter Area; MCE 385 Lab Sample #; 3 Grid Opening Size: 0.01124 Client Sample #: 05 Area Examined: 0.04496 GRIP BOX: Magnification: 20,000 GRID ID; Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Pate: 5/5/02

Analysis Performed By; MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure NorN EDS No (Nonadb F 8 C M >=05 M :>=5p Chrys Arnpfiitote Nonasti Ambg/ND No Coord <5p Etements)

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Struct = > O-Sp .>5:1 Aspect Ratio Grid acceptance: 'Z- Positive Cttfracflcn pattern properties conforming to <50% undis$o^ed ftftar, oveffapped or foidad Totals laboratory Idcnlillcabon criteria observed <10% particulate cover^a >50% coverage ate least 20 unfclded or cverapped grid spuares <5% F B C M >5^f 4- EDS specbum conformirg to laboratory holes or opaque areas dentificafion criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections] ] Anthophyllite Non-Asbestos Tremolite ] U = Matrix Actirtolite Non-Identified rtSD = No Structures Detected i .

CITY_21MC100_002901660

NYC-WTC_000228771