NYC-WTC_000199375

NYC 9/11 Public Portal Document

TEiM Asbestbs (air) Count Sheet Client Name: NYC BOE Voliinie (liters): 1944 Lab Group #: 8745 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 14 Grid Ope ling Size: 0.01124 Client Sample #: 14 Area E vamined: 0.04496 mm- GRID BOX: 3^^ Magnification: 20,000 GRID ID: Acceleratini: Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 8/24/02

Analysis Performed By: .MARK PEYSAKHOV

GO Structure Structure Type Length ID o'Str icture Nor v EDS No ~F B C M i >=05 p >;5p Ghrvs Amphibole i Nonasb . .Ambig/ND iNcr...ub No Coord ’ ' j I Elements) <5p J

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Struct - > 0.5g > 5:1 Aspect Ratio Gna acceptance: Positive diffraction pattern properties conforming to <50% undissclved fitter, overlapped or foldec Totals ‘aboraiory identification criteria observed <10% paniculate coverage >50“'o coverage ate least 20 un'olded or overlapped grid scuares < 1- I B (/ I M ) >5u V = EDS spectrum conforming to asoraicg, doles or opaque areas identification criteria oosen/ed Chrysotile AMPHIBOLES Ainphi )ole I 5 - Single Fiper Amosite 3 = Sundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous I C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos I I Tremolite M = Matrix Actinolite Non-Identified J J MSD = No Structures Detected

CITY_21MC100_003033663

NYC-WTC_000199375