NYC-WTC_000204328

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet ClientNam^ NYC BOE yolinne_Qiters)2 1824 Lab Group #: 7385 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 3 Grid Opening Size: 0.01124

Client Sample #: 06 Area Examined: 0.04496 mm^

GRID BOX: Magnification: 20,000 GRID ID: 3^ Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 4/11/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. structure Structure Type Length ID of Structure N or 'J EDS (Nonadb No F B C M >=05 pi ;>=51J Chrys Amphibole Nonasb Ambig/ND No Coord <5u Elements)

(J

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Struct = > 0 5u >5:1 A.spect Ratio Gnd acceptance:

Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals <10% particulate coverage >50% coverage ale laboratory identification criteria observed least 20 unfolded or overlapped grid squares <5% F B C M >5p /= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile A.MPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous I C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_003060136

NYC-WTC_000204328