NYC-WTC_000229376

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1800 Lab Group #; 8267 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 2 Grid Opening Size; 0,01124 Client Sample #: 04 Area Examined: 0.04496 mm’ GRID BOX: Magnification: 20 000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/24/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type tengtii 10 of Structure N or eos (Nonadb No F B C M >=05 u •>=5p Chrys Amphibole Nonasb Ambig/ND No Coord <5p Elements}

__ :_____„X—_____ _______ Struct = > O.Sp >5:1 Aspect Ratio Grid acceptance: Positive diffraction pattern properties confomting to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% parficulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5tJ EDS spedrutti conforming to laboratory holes or opaque areas identification criteha observed Chrysotile I AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous I Anthophyllite C = Cluster (>3 intersections} Non-Asbestos Tremolite M = Matn)( Actinolite Non-Identified NSO = No Structures Delected

CITY_2IMCl00_000492060 NYC-WTC_000229376