NYC-WTC_000205310

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 9210 Filter Type / Filter Area: VICE 3 85 mm" Lab Sample #: 10 Grid Opening Size: 0.01124 Client Sample #: 12 Area Examined: 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 N or 7 EDS No (Nonaob F B C M >=05 u >=5p Chrys Amphibole Nonasb1 Ambig/ND No Coord <5p Elements)

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=hoto No. iirom 1 in b asbestos ccntaimng samp es) Grid acceptance: Struct = > 0.5p > 5:1 Aspect Ratio <50% undissoived filter, overlapped or folded Totals v = Positive diffraction pattern properties conforming to <10% particulate coverage >50% coverage ate ’ laboratory identification criteria observed least 20 unfolded or overlapped grid squares <5% holes or opaque areas F B C M i v= EDS spscirum conforming to laboratory identification criteria observed Chrysotile i AMPHIBOLES ) Amphibole r = Single Fiber i Amosite i B = Suncle <3 fibers <1 fiber diameter apart ! Crocidolite Ambiguous C = Cluster {>3 Intersections) I Anthcphyllite ! Tremolite Non-Asbestos M = Matrix Actinolite Non-Identified NSC = No Structures Detected

CITY_21MC100_009261867

NYC-WTC_000205310