TEM Asbestos air sample results, NYC BOE, Nov 2001

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: m^C BOE Volume (liters): 1928 Lab Group #: 5948 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 1 Grid Opening Size: 0.01124

Client Sample #: 1 Area Examined: 0.04496 mm^

GRID BOX: Magnification: 20,000 GRID ID: Accelerating V^oltage: 100 KeV # Grid Openings: 4 Analysis Date: 11/21/01

Analysis Performed By: ZP] MICHAEL GORYCKl

GO. Structure Structure T ype Length ID of Structure N or V EDS (Nonadb No F B C M >=05 p :>=51J Chrys Amphibole Nonasfc Ambig/ND No Coord <5p Elements)

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Struct = > 0,5u .> 5:1 Aspect Ratio Grid acceptance: Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded T otals laboratory' identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or ovsnacped grid squares <5% B C M EDS spectrum conforming to laboratory holes or opaque areas I F identification criteria obsen/ed Chrysotile AMPHIBOLES : Amphibole F = Single Fiber Amosite ' B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos i T remoiite ; M = Matrix Non-ldentified NSD = No Structures Detected Actinolite Lj. CITY_21MC100_003106640

NYC-WTC_000185487