NYC-WTC_000228916

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1808 Lab Group #: 7741 Filter Type / Filter Area: MCE 385 Lab Sample #: 14 Grid Opening Size; 0.01124 'Client Sample #: 16 Area Examined: 0.04496 mm’ GRIP BOX: MafiSiflfiatiotr 20,000 GRID IP: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/14/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Lengtti 10 of Structure N or v EDS No (Nwalb F B C M >4)5 p >=5p Chrys Amphibote Nonasb Ambig/ND No Coord <5p Etements)

J?

Struct = > 0.5(1 > 5; I Aspect Ratio Grid acceptance; Positive diff.'acticn patten properties cotifomiing to <50% undlasotved filter, overiapped or folded Totals laboratcry Identificaton criteria observed <10% partojlate eweraje >50% coverage ate least 20 unfolded orovertapped qnd squares <5% F B C M ■ V- EDS spectrum conforTrong to laboratory holes Of opaque areas Identification criteria observed Chrysotile AMPHIBOLES Amphibole F= Single Fiber Amosite B = Bundle (<3 libers <1 fiber diameter apart Crociddite Ambiguous C = Cluster (>3 inteisecttons) Anttiophyiiite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSO = No SUuctures Detected

CITY_21MC100_002901887

NYC-WTC_000228916