NYC-WTC_000207151

NYC 9/11 Public Portal Document

f TEM Asbestos (airi Count Sheet Client Name: NYC BOE Volume (liters); 1920 Lab Group #: 7868 Filter Type / Filter Area; MCE 385 mm’ Lab Sample #: 19 Grid Opening Size: 0.01124 Client Sample #: 19 Area Examined: 0.04496 mm’ GRID BOX: Magnification: 20 000

GRID ID: -^±37 Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/25/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. . Structure Structure Type Length ID of Structure EDS ■ No >=05 p Amphibole . ...(Nonadb F B C M >=5p Chrys Nonasb Ambig/ND No Coord Elements)

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Struct = > 0.5p > 5:1 Aspect Ratio Grid acceptance: ' -■■Totals^W^- >/= Positive diffracton pattern properties conforming to <50% laboratory identification, criteria observed least 20 unfolded or overlapped grid squares <5% F B C M >5p V= EOS spectrum conforming to laboratory holes or opaque areas identificabon 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-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_003014704

NYC-WTC_000207151