TEM Asbestos air sample results, NYC BOE, Feb 2002

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: NN’C BOE Volume /liters): 1S16 Lab Group #: 6696 Filter Tvpe ,/ Filter Area: MCE 385 nmT Lab Sample #: 2 Grid Opening Size: 0.01124 Client Sample #: 5 Area Examined: 0.04496 mm- GRID BOX: Magnification: 20,000 GRIPED: Accelerating Voltage: 100 KeV Grid Openings: 4 Analysis Date: 2/16/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length IO of Structure Norv EDS , No (Nonadb F B C M >=05 u >=5)J Chrys Amphiboie Nonasb Ambig/ND No Coord <5u Elements)

-2?

Struct = > 0.511 .> 5:1 Aspect Ratio Grid acceptance; 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 overiapped grid squares <5% ' B I C i M I >5u v= EDS spectrum conforming to iaboratoty i F holes or opaque areas identiiication criteria observed Chrysotile j AMPHIBOLES Amphibole ) F = Single Fiber Amosite I ■ 3 = Eundie (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous ) C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos i Tremolite M = Matrix i Non-Idennfied NSD = No Structures Detected Actinolite i

CITY_21MC1OO_OO31O324O

NYC-WTC_000183797