NYC-WTC_000202492

NYC 9/11 Public Portal Document

l Eyi Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 8809 Filter Type / Filter Area: MCE 385 mnB Lab Sample #: 3 Grid Opening Size: 0.01124 Client Sample #: G3 r Area Examined: 0.04496 mm-

GRID BOX: Magniflcation: 20,000 GRID ID : 3 _. Acceler ating Voltage: too KeV # Grid Openings: 4 Analysts Date: 9/5/02

Analysis Performed By: MARK PEYSAKHOV

. ■ GO. j J Structure Structure Type Length ID of Structure N or y EDS ■ (Nonadb No : , (1 F B C s=05p , I >=5p Chrys Amphibole Nonasb Ambig/ND No Coord <5p . Elsments)

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Struct = > 0.5p > 5; 1 .Aspect Ratio , Grid acceptance:. PPeitive diffraction pattern properties conforming 10 <50% undissolved filter, dveflapped or folded Totals laboratory identification criteria observed <10% particuiaie coverage >50% coverage ale least 29 unfolded or overlapped grid squares <5% F B G M >5u' i' 4= EDS spectrum conforming to laboratory holes or opaque areas ’i i identification criteria observed , ■ - Chrysotile AMPHIBOLES . Amphibole F = Single Rben y Amosite .6 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite Jr - r \ M = Matrix .i Actinolite Non-Identified ; I NSD = No Structures Defected

CITY_’2 IMCl 0 oZoI 12 76 758^

NYC-WTC_000202492