NYC-WTC_000221958

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet ClientNam^ NYC BOE Volume (liters): 1805 Lab Group #: 7574 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 12 Grid Opening Size: 0.01124

Client Sample #: Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRIDID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 4/29/02

Analysis Performed By: ROMAN PEYSAKHOV

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

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Struct = > 0.5p .> 5:1 Aspect Ratio Grid acceptance:

9= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5p v'= EDS specrum conforming to laboratory holes or opaque areas identification criteria obsen/ed Chrysotile AMPHIBOLES ■ Amphibole r = Single Fiber Amosite 8 = Sundle (<3 fibers < 1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos T remclite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

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