NYC-WTC_000229343

NYC 9/11 Public Portal Document

TEM Asbestos (air) Coant Sheet Client Name: NYC BOE Voinme (liters): 1800 Lab Group #: 8214 Filter Type/Filter Area: MCE 385 mm" Lab_Sanifile^ 1 Grid Opening Size: 0.01124

Client Sample #: 03 Area Examined: 0.04496 rnm^ GRID BOX; Magnification: 20 000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/22/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Sfructure Type ■ Length IDofSiructure N or r/ EDS No tNonabb No Coord F B C M >=5m Clitys Amphibole Nonasb AmbigWO Elements) <5tJ' •

z- 23 —c—

Struct = > 0.5 p .> 5: t Aspect Ratio Grid acceptance; Positive diffraction pattern properties conforming to <50% undtssotved te, overlapped or folded Totals laboratory identWeatiorr criteria observed <10% particulate coverage >50% coverage ate (east 20 unfolded or overtapped grid squaws <5% F B C M >5^ 4= EDS spectrum conforming to laboratory holes or opaque areas idenriifcaSon criteria observed Chiysotile AMPHIBOLES Amphibole f = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidblite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite- M = lttetri)( Actinolite Non-Identified NSD = No Structures Delected

CITY_2lMC100_000492011 NYC-WTC_000229343