NYC-WTC_000212637

NYC 9/11 Public Portal Document

TEM Ash ! os (air) Count Sheet Client Name: NYC BOE Volume (liters): 1928 Lab Group #: 7894 Filter Type / Filter Area: MCE 385 Lab Sample #: 3 Grid Opening Size: 0.01124 Client Sample #: 03 Area Examined: 0.04496 mm^

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/29/02

Analysis Performed By: _ R VN PEYSAKHOV

GO. Structure Structure Type igth ID of Structure N or "J EDS 'j (Nonadb [ No F B C M >=5p Chrys Amphibole Nonasb Ambig/ND No Coord Elements)

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______________ L_J____ Struct = > 0.5p > 5:1 Aspect Ratio Grid acce;. ■ 'J= Positive diffraction pattern properties conforming to <50% unc Iter, overlapped or folded Totals laboratory identification criteria observed <10% par .erage >50% coverage ate least 20 u; overlapped grid squares <5% F B C M >5m '/= EDS spectrum conforming to laboratory holes orc: iS

identification criteria observea Chrysotile AMP! Amphibole F = Single Fiber An B = Bundle (<3 fibers <1 fiber diameter apart Cr; Ambiguous C = Cluster (>3 Intersections) Alli' Non-Asbestos M = Matrix T' A Non-Identified NSD = No Structures Detected

CITY_21MC1OO_OO2867427

NYC-WTC_000212637