NYC-WTC_000229108

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1872 LabGroup#; 7893 Filter Type / Filter Area: MCE 385 mm* Lab Sample #: 9 Grid Opening Size: 0 01124

Ctieot Sample #: Area Examined: 0.04496 mm- GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings; 4 Analysis Date: 5/28/02

Analysis Performed By: /\?r ROMAN PEYSAKHOV

GO. Structure Type Lenglti ID of Structure N or V EDS (Nonadb F B C M >=5m Chrys Amphibole Nonasb Ambig/ND /-x No Coord <5M Elements)

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Struct = >0.5 p > 5.1 Aspect Ratio Ged acceptance: V - Positive diffraction pattern properties contorting to <50% undissotved filter, overlapped or foUed Totals latxiratory identification criteria observed <10% parfculate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M = EDS spectrum conforming to laboratory hotes Of opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single fiber Amosite B = Bundle I<3 libers <1 fiber diameter apart Crocidolite Ambiguous C - Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite Non-Identified NSD = No Structures Detected

CITY_21MC100_002902218

NYC-WTC_000229108