NYC-WTC_000205311

NYC 9/11 Public Portal Document

TEM Asbesfos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 9210 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 11 Grid Opening Size: 0.01124 Client Sample #: 13 ArcaE xainin ed: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 12/26/200

Analysis Performed By: MARK. PEYSAKHOV

GO. Structure Structure Type Length ID of Structure yj or y EDS No (Nonadb F B C >=06 p r ; •=5p Chrys Amphibole Nonasb Ambig/ND No Coord <5p Elements)

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1 A Photo No, (from 1 in b asbestos contaming sampes) Grid acceptance: Struct = > 0.5p > 5:1 Aspect Ratio <50% undissolved filter, overlapped or foldec Totals Positive diffraction pattern crcperties conforming to <10% particulate coverage >50% coverage ate laboratory Identification criteria observed least 20 unfoided or overlapped grid squares <5% holes or opaque areas F B I C M >SU EDS spectrum conforming to laboratory identification cnteria ooserved Chrysotile .AMPHIBOLES , F = Single Fiber Amphibole Amosite 3 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Tremolite Non-Asbestos M = Matrix Actinolite Non- Identified NSD = No Struciures Detected

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