NYC-WTC_000207476

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: WC BOE Volume (liters): 1920 Lab Group #: 8109;' ■' Filter Type / Filter Area: MCE- 385 mm"- Lab Sample #: 11,- Grid Opening Size: 0.01124

Client Sample #: 11 Area Examined: 0.04496 mm".

GRID BOX: Magnification;20,000 ■ GRIDII): Accelerating Voltage: 10'0 KeV - . # Grid Openings: 4 Analysis Date:- 6/15/02 .

Analysis Performed By: - . MARK'PEYSAKHOV ■

GO. Structure Structure Type Length -■ ID of Structure N or V ■ . EDS (Nonadb ■ No F B C M ?=05 p ~ >=51J Chrys Amphibole Nonasb Ambig/ND ■ No Coord <5p Elements) .

Struct=>0.5p >5;I Aspect Ratio Ghd acceptance: Positive diffraefion pattern properties conforming to undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded orovertapped grid squares <5% F B C M >5p vh EDS spectrum conforming to laboratory . holes or opaque areas identification criteria observed Chrysotile ■'amphiboles i Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite i Ambiguous C = Cluster (>3 Intersections). Anthophyllite . j Non-Asbestos Tremolite i M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC1OO_OO3O15266 NYC-WTC_000207476