TEM Asbestos air sample results, NYC BOE, Nov 2001

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: NN'C BOE Volume (liters): 1928 Lab Group #: 5917 Filter Type / Filter Area: MCE 385 mm* Lab Sample #: 14 Grid Opening Size: 0.01124

Client Sample #: 14 - Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRIDED: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 11/18/01

Analysis Performed By: ROMAN PEYSAKHOV

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

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I ■___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

I Struct = > 0.5p _> 5:1 Aspect Ratio Grid acceptance: 9= Positive diffraction pattern properties conforming to <50% undissolved 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 9= EDS spectrum conforming to laboratory holes or opaque areas identification 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 T remolite j M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_0 03106539

NYC-WTC_000185424