NYC-WTC_000208269

NYC 9/11 Public Portal Document

1 EM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1928 Lab Group 8828 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 17 Grid Opening Size: 0.01124 Client Sample #: 17 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: i Accelerating Voltage: 100 KeV j # Grid Openings: 4 Analysis Date: 9/10/02

■Analysis Peritrmed By: .MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or ED.S No (Nonadb F B i C M =05 p Chrys Amphibole Nonasb Amb g/ND No Coord Op Elements)

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nT T

I 1 1 r

Slruc: ■= ■ 0 5p * 5i I Aspect Ratio Gric acceptance

\= ^’ositive diffraction pattern properties conlormi ig to <50% jnOissolvefl filter, overlapped or folced Totals laboratop/ identification criteria observed <10% paniculate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% 1 C I M p5|u \ e EDS spectrum conforming to acoruicy holes or opaque areas 1 ■identification criteria observed Chrysotile ' ! [ AMPHIBOLES Amphibole j F = Single Fiber Amosite Ambiguous B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite [ _1 Anthophyllite C = Cluster (>3 Intersections) Tremolite Non-Asbestos n I M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_003021278

NYC-WTC_000208269