NYC-WTC_000228499

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1784 Lab Group #: 7359 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 11 Grid Opening Size: 0.01124 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID ID - Accelerating V^oltage: 100 KeV # Grid Openings: 4 Analysis Date: 4/9/02

Analysis Performed By: MARKPEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or V EDS -No (NonatJb F B C M >=05 y >=5p Chrys Amphibole Nonasb Ambig/ND ‘ No i Coord <5y Elements)

Struct” > 0.5y > 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 overlapped grid squares <5% r-p B ! C j M p5y EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile amphiboles Amphibole F = Single Fiber Amosite S = Bundle (<3 fibers <1 fiber diameter apart I Crocidolite j Ambiguous C = Cluster (>3 Intersections) i Anthophyllite Non-Asbestos j Tremolite I IVI = Matrix ■ Actinolite i Non-ldentified NSD = No Siuctures Detected

CITY_21MC1OO_OO29OO781

NYC-WTC_000228499