NYC-WTC_000189463

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1808 Lab Group #: 7123 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 10 Grid Opening Size: 0.01124 Client Sample #: 13 Area Examined: 0.04496 mm^ GRID BOX: 3^ Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 AnalvsisDate: 3/18/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or 7 EDS {Nonadb No F B C M >=05 p Chrys Amphibole Nonasb Ambig/ND Elements)

IPI Coord 2^2 u <5p

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Struct = > 0-5p >5:1 Aspect Ratio Grid acceptance; Positive diffraction pattern properties confonning to <50% undissoh/ed filter, overiapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate

V= EDS spectrum conforming to laboratory least 20 unfolded or overiapped grid squares <5% F B c M >5p holes or opaque areas identification criteria observed Chrysotile ! AMPHIBOLES S Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) i Anthophyllite [ Non-Asbestos Tremolite M : Matnx - Actinolite Non-Identified NSD = No Structures DeteCteri

CITY_21MC100_003087308

NYC-WTC_000189472