NYC-WTC_000200275

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: m"C BOE Vpiumejlitersli 1920 Lab Group #: 7285 Fitter Type / Filter Area: MCE 385 mm- Lab Sample #: 15 Grid Opening Size: 0.01124

Client Sample #: 15 Area Examined: 0.04496 mm- GRID BOX: Magnification: 20,000 G RID ID : Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/31/02

Analysis Performed By: MARK PEYSAKHOV

GO, Structure Structure Type Length ID of Structure Nor 7 EDS No (Nonado F E C M >=C5p >=5p Chrys Amphibole Nonasb Ambig/ND No Coord <5|. Elements)

sr

Struct = > O.Su _> 5:1 .Aspect Ratio Grid acceptance: 7= Positive diffraction pattern properties conforming to tridissolved tilter. overlapped or folded ipltils laboratory identification criteria obsewec <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C >5u 7= EDS spectrum conforming tc laboratory M holes or opaque areas identification criteria observed . Chrysotile AMPHIBOLES r Amphibole F = Single Fibe^ .Amosite B = Bundle {<3 fibers <1 liber diameter apan Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite j Non-Asbestos Tremolite j M - Matrix Actirclite i Non-Identified NSO = No Structures Detected

CITY_21MC100_011274774

NYC-WTC_000200289