NYC-WTC_000229307

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume filters): 1824 Lab Group #; 8150 Filter Type / Filter Area; MCE 385 mm" Lab Sample #: 5 Grid Opening Size: 0.01124

Cliept Sample #: 07 Area Examined: 0,04496 mm"

GRID BOX: Magnification; 20 SEB GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date; 6/17/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length IDofSfnjcturo Nor V EDS (Nonadb No F B C M >=05 y >=5p Chrys AmphSide Nonasb Ambigfl^D No' Coord <5m Elements)

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Struct = > 0.5 M >5'.! Aspect Ratio Grid acceptance; '/= Positive dHfractton pattern properties conioming to <50% undtssohed Filter, overiapped or folded Totals laboratory identMeaiicin criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overtapped grid squares <5% F B C M '^= EDS spectrum conforming to laboratory hcrtes or opaque areas idendfication criteria observed Chrysotile AMPHIBOLES Al libole F = Single Fiber Amosite Ambiguous B = Bundle (<3 fiber? <1 fiber diameter apart Crocidolite I Anthophyllite Non-Asbestos C = Cluster (>3 Intersections) j Tremolite M = Maltix Actinolite Non-Identified NSO = No Structures Detected

CITY_21MC1OO_OOO491941 NYC-WTC_000229307