NYC-WTC_000229377

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1816 Lab Group #: 8267 Filter Type / Fitter Area: MCE 385 Lab Sample #: 4 Grid Opening Size: 0.01124

Client Sample #: 06 Area Examined: 0.04496 mm- GRID BOX: Magnification: 20 000 GRintD: Accelerating Voltage: 100 KeV # Grid Openings: 4 Anaivsb Date: 6/24/02

Analysis Performed Bv; ROMAN PEYSAKHOV

GO. Structure Structure Type Length IDofSbucture Nor V EDS (Nonadb No F B C M >=051} i>=5p Chrys Adiphtoole Nonasb No Coord <5m Elements)

/W

Struct “ > 0.5n > 5:1 Aspect Ratio Grid acceptance 'I- Positive dilfraetion pattern properties conforming to <50% undissolved filter, overlapped or footed Totals laboratory identification criteria observed <10% partIcuIatB coverage >50% coverage ate least 20 unfotded or overlapped grid squares <5% F B C M >5 (J i/= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite Non-Identificd NSD = No Structures Detected ____I

CITY_2IMCl00_000492062 NYC-WTC_000229377