NYC-WTC_000207312

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume filters): 1928) ; ./ Lab Group #: ‘7961. FTIterJ^iEe/Filte£ATea2 MCE ; 385 mmA; Grid Opening Size: 0.01124' / ; - Lab Sample #: 6 Client Sample #: 6 Area Examined: 0'.04496 mm^ GRID BOX: Magnification: 20,000 ■ GRID ID: . Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/4/02 ■'

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Ty pe Length ID of Structure N or 7 ' EDS ,No >=05 p ~ (Nonadb F- B C 14 >=5p Chrys - Amphibole Nonasb Ambig/ND I No Coord <5p ' Elements)

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Struct = > 0.5p .> 5:1 Aspect Ratio Grid acceptance: a/= Positive diffraction patten properties conforming to *50% undissolved filter, overlapped or folded Totals _ -I_______ __ _ identification__criteria laboratory observed4 <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5p i EDS spectrum confoiming 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. ■ ■ > Non-ldentified Actinolite NSD = No Structures Detected

CITY_21MC100_003014978

NYC-WTC_000207312