NYC-WTC_000207638

NYC 9/11 Public Portal Document

TEP lOS (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 8240 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 19 Grid Opening Size: 0.011'24 ' Client Sample #: .19 Area Examined: ' 0.0449.6 mm^

GRID BOX: Magnification: 20 000 GRID ID: Accelerating Voltage: . 100 KeV # Grid Openin2s: 4 Analysis Date: 6/23/02

Analysis Perfornuil i; t: PEYSAKHOV

GO. . Structure ■ Structure Ty;;.-. ,:igth ID of Structure N or EDS ■ No- (Nonadb •F B C M >=5p - Chrys Amphibole Nonasb Ambig/ND No Coord Elements)'

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Struct = > 0.5p >5:1 Aspect Ratio V= Positive diffraction pattern properties conforn..;iy to Iler, overlapped or folded Totals laboratory identification criteria observed jerage >50% coverage ate overlapped grid squares <5% F B C M >5u '/= EDS spectrum conforming to laboratory' as identification criteria observed Chrysotile . ;s Amphibole. F = Single Fiber B = Bundle (<3 fibers <1 fiber diameter aped Ambiguous C = Cluster (>3 Intersections) Noh-Asbestos M = Matrix Non-Identified NSD = No Structures Detected

CITY_21MC100_003015532

NYC-WTC_000207638