NYC-WTC_000211246

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: N\’C BOE Volume (liters): 1920 Lab Group #: 8138 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 13 Grid Opening Size: 0.01124 Client Sample #: 13 Area Examined: 0.04496 mm^

GRID BOX: Magnification: 20 000 GRIDID: Accelerating Voltage; 100 KeV # Grid Openings: 4 Analysis Date: 6/17/02

Analysis Performed By: MARK PEYSAKHOV

GO Structure Structure Type Length ID of Structure N or v EDS No (Nonadb F B C M >=05 u Chrys Amphibole Nonasb Ambig/ND No Coord <6p Elements)

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Struct =■■ > 0 5j > .5:1 Aspect Ratio Grid acceptance: ^/= Positive diffraction pattern properties conforming to undissolved filter, overlapped or folded Totals laboratory identification critena observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5m ^/= 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 Tremolite M = Matrix Non-ldentified Actinolite NSD = No Structures Delected

CITY_21MC1OO_OO28638O6

NYC-WTC_000211246